Cited by 12Municipal Solid Waste ManagementSustainable Industrial EcologyWaste Management and Recycling

The DOI matches its Crossref record; 58 of the 59 references it cites were found in a registry or an index; none of the 10 sources its claims cite is checked for support yet.

Integrated and effective management of muck waste under the platform governance mode for a circular economy

Open access
Wu, Weiwei, Yin, Youying, Hao, Jian Li, Ma, Wenting, Gong, Guobin, Yu, Shiwang·2023·Environmental Science and Pollution Research

Published version of a preprint

Abstract

Abstract Construction waste is a type of solid waste that is inevitably produced in the process of urban development and has a dreadful environmental impact due to inadequate management of it by the public sector. The purpose of this paper is therefore to investigate platform governance as an alternative strategy for muck waste management that will contribute to a circular economy. A comparison between the traditional governance process and platform governance of muck truck management is made by using Petri-net. Nanjing’s muck smart supervision platform is used as a case study to assess effectiveness of the platform governance mode. Results from Petri-net simulation modeling software reveal that the platform governance mode is more effective than the traditional mode. Based on the case study of Nanjing’s muck smart supervision platform, it is found that the success of Nanjing's muck waste management can be attributed to the platform governance mode. This means that the platform management approach can contribute to the sustainability of muck waste governance. It is feasible to utilize the platform governance mode for muck waste as an integrated and effective management mode for current practices of muck waste management and resource recovery in China. The platform governance mode can significantly improve the efficiency of muck waste management and provide economic and environmental benefits as part of a circular economy.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

This paper proposes a platform governance mode for managing muck waste from construction and demolition waste and compares it with traditional governance using Petri net modeling and a Nanjing case study. It finds that the platform mode shortens governance process times and can provide environmental and economic benefits for a circular economy.

Key findings

  • Petri net simulation showed the platform governance mode had shorter average process cycle times than the traditional mode: 6.5, 6.7, and 6.76 days for 10, 20, and 50 process samples, versus 14.7, 14.75, and 15.24 days under traditional governance.
  • Nanjing’s muck smart supervision platform reduced certificate processing time from an average of 2–3 days to a few hours; Nanjing’s demolition and construction waste resource utilization rate exceeded 90%, with nearly 3 million tons of construction waste recycled, saving approximately 1.8 million cubic meters of landfill space and nearly 100 million yuan in transportation and landfill costs.
  • The platform mode is described as reducing information asymmetry between the public sector and regulated enterprises through real-time data collection, automatic violation reporting, control instructions, and value co-creation among public sector, platform enterprises, and muck transportation/disposal enterprises.

Methods

  • The study uses Petri net to model and compare the traditional governance process and the platform governance process for muck truck management, redefining tokens, places, transitions, and time delays for muck waste governance.
  • It conducts a case study of Nanjing’s muck smart supervision platform; time-delay data for critical processes were obtained through a survey at Nanjing Jingzhu Wisdom Technology Company, and Visual Object Net++ was used to build timed Petri net models.
  • The analysis compares process cycle times and reports environmental, economic, and social acceptance benefits of the platform governance mode.

Limitations

  • The paper states that it lacks analysis of waste reduction from the source; future research should combine the platform governance mode with building information modeling (BIM) to avoid unnecessary waste generation, and a full life cycle assessment could be carried out to investigate environmental and social impacts.
  • Evident from the text: the empirical findings rely on a single Nanjing case and simulation time delays obtained from one company survey, so broader generalizability and independent validation are not established.
  • Evident from the text: environmental and economic benefits are reported for Nanjing without a full life cycle assessment or detailed quantification of social impacts.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1007/s11356-023-29242-w

Cites

58 of 58 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

0 of 10 cited sources checked · 0 supported · 0 flagged

Verify all 2 references — free account
  • Findingown data
    § Abstract · p. 1

    The success of Nanjing's muck waste management can be attributed to the platform governance mode.

    “from the case study it is found that the success of Nanjing's muck waste management can be attributed to the platform governance mode”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Nanjing's muck smart supervision platform is an instance of the proposed platform governance mode.
  • Findingown data
    § Abstract · p. 1

    The platform governance mode is more effective than the traditional governance mode for muck waste management.

    “Results from Petri net simulation modeling reveal that the platform governance mode is more effective than the traditional mode”
    • Also stated in: § Introduction · p. 2 · plain
      “with results of the analysis showing that the platform governance mode is more effective and feasible.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: The Petri net models built for the traditional and platform governance processes accurately represent the real muck waste management processes.
  • Findingnone given
    § Environmental benefits · p. 9

    The platform tracks the muck waste stream from the source to the final disposal or reuse.

    “After the generation and collection of muck waste from the construction site, the platform tracks the muck waste stream from the source to the final disposal or reuse.”
    Quote in the paperSubstantial claim
  • Findingown data
    § Evaluation of muck waste management process · p. 8

    The running time of the governance process under the platform governance mode is significantly shorter than that under the traditional governance mode.

    “The results show that the running time of the governance process under the platform governance mode is significantly shorter than that under the traditional governance mode.”
    Quote in the paperSubstantial claim
  • Findingown data
    § Abstract · p. 1

    The platform governance mode significantly improves the efficiency of muck waste management as compared with the traditional governance mode.

    “The main finding from the study is that the platform governance mode significantly improves the efficiency of muck waste management as compared with the traditional governance mode”
    Quote in the paperSubstantial claim
    • Rests on an assumption: The Petri net models built for the traditional and platform governance processes accurately represent the real muck waste management processes.
    • Rests on an assumption: Nanjing's muck smart supervision platform is an instance of the proposed platform governance mode.
  • It may state two separate claims as one. 19
  • Probably not a substantial claim. 26
  • It may state two separate claims as one.

    Findingnone given
    § Environmental benefits · p. 9

    Nearly 3 million tons of construction waste has been recycled, saving approximately 1.8 million cubic meters of landfill space and nearly 100 million yuan in transportation and landfill costs.

    “Nearly 3 million tons of construction waste has been recycled, saving approximately 1.8 million cubic meters of landfill space and nearly 100 million yuan in transportation and landfill costs.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper’s conclusions may not depend on it. The paper may give no reason why it holds.

    Findingnone given
    § Case description · p. 8

    Since 2020, Nanjing's muck smart supervision platform has become a powerful assistant for various muck waste management activities and clearance.

    “Since 2020, Nanjing's muck smart supervision platform has become a powerful assistant for various muck waste management activities and clearance.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper’s conclusions may not depend on it. The paper may give no reason why it holds. It may state two separate claims as one.

    Findingnone given
    § Social acceptance · p. 9

    Under the platform governance mode, through cross-departmental cooperation and residents' participation, Nanjing's muck smart supervision platform has been widely used and has brought about economic and environmental improvements.

    “Under the platform governance mode, through cross-departmental cooperation and residents' participation, Nanjing's muck smart supervision platform has been widely used and has brought about economic and environmental improvements.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper’s conclusions may not depend on it. The paper may give no reason why it holds. It may state two separate claims as one.

    Findingnone given
    § Social acceptance · p. 9

    Nanjing's muck smart supervision platform has a transparent regulatory framework to protect privacy and data security, which helps to increase social acceptance of the platform as a contribution towards a circular economy for the construction industry.

    “For example, Nanjing's muck smart supervision platform has a transparent regulatory framework to protect privacy and data security, which helps to increase social acceptance of the platform as a contribution towards a circular economy for the construction industry.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper may give no reason why it holds. It may state two separate claims as one.

    Findingnone given
    § Case description · p. 8

    Through real-time collection of activity data of muck waste in Nanjing, the platform realizes the whole process of data traceability and non-tampering and establishes a credit system for the whole industry chain.

    “Through real-time collection of activity data of muck waste in Nanjing, the platform realizes the whole process of data traceability and non-tampering and establishes a credit system for the whole industry chain.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper may give no reason why it holds.

    Findingnone given
    § Platform governance mode · p. 3

    Most previous research on digital platforms has focused on developing the technology and architecture of digital platforms.

    “However, most previous research on digital platforms has focused on developing the technology and architecture of digital platforms.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper may give no reason why it holds. It may state two separate claims as one.

    Findingnone given
    § Case description · p. 8

    After the platform was put into operation, the processing time for certificates was reduced from an average of 2-3 days to a few hours, greatly improving efficiency.

    “After the platform was put into operation, the processing time for certificates was reduced from an average of 2-3 days to a few hours, greatly improving efficiency.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper may give no reason why it holds.

    Findingnone given
    § Petri net · p. 3

    There has been very little literature on Petri net for waste management processes.

    “However, there has been very little literature that can be found on Petri net for waste management processes.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper may give no reason why it holds.

    Findingnone given
    § Environmental benefits · p. 9

    To date, Nanjing's demolition and construction waste resource utilization rate has exceeded 90%.

    “To date, Nanjing's demolition and construction waste resource utilization rate has exceeded 90%.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper’s conclusions may not depend on it. The paper may give no reason why it holds. It may state two separate claims as one.

    Findingreasoning
    § Process analysis of the platform governance mode · p. 6

    The acquisition of the muck waste stream data has been transferred from offline to online, which improves the efficiency of the monitoring of muck trucks.

    “The acquisition of the muck waste stream data has been transferred from offline to online, which improves the efficiency of the monitoring of muck trucks.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper may give no reason why it holds.

    Findingnone given
    § Platform governance mode · p. 3

    Research and practice of platform as a governance tool for upgrading the muck truck management industry are still lacking.

    “However, the research and practice of platform as a governance tool for upgrading the muck truck management industry are still lacking.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper may give no reason why it holds.

    Findingnone given
    § Muck waste management · p. 2

    Little research has been done on the integrated whole-process management of muck waste management and public governance approaches that can be utilized for improving muck waste management.

    “The literature review shows that little research has been done on the integrated whole-process management of muck waste management and public governance approaches that can be utilized for improving muck waste management.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper may give no reason why it holds. It may state two separate claims as one.

    Interpretationnone given
    § Comparative evaluation of the process of the two governance modes · p. 8

    The platform can obtain governance information in real-time through on-board terminal equipment, and timely alarm for the violations of muck waste transportation and disposal.

    “The platform can obtain governance information in real-time through on-board terminal equipment, and timely alarm for the violations of muck waste transportation and disposal.”
    Quote in the paperNot a substantial claim
  • It may state two separate claims as one.

    Interpretationreasoning
    § Value co-creation · p. 5

    The platform governance mode can contribute to finding a solution for the problem of muck waste management and facilitate the co-creation of value.

    “Given this perspective, the platform governance mode can contribute to finding a solution for the problem of muck waste management and facilitate the co-creation of value.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper may give no reason why it holds. It may state two separate claims as one.

    Interpretationreasoning
    § Two-sided market structure · p. 5

    The more enterprises that join the platform, the less offline governance power is invested by the public sector, and richer governance information can be obtained through the platform.

    “Similarly, the more enterprises that join the platform, the less offline governance power is invested by the public sector, and richer governance information can be obtained through the platform.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. It may be too vague to check against evidence.

    Interpretationreasoning
    § Conclusions and future research · p. 9

    The platform governance mode in a circular economy is a comprehensive solution to the current muck waste accumulation problem.

    “The platform governance mode in a circular economy is a comprehensive solution to the current muck waste accumulation problem and should be encouraged by the government.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: Inefficient management of muck waste has resulted in significant quantities of waste disposed in landfills or even illegally dumped without environmental protection measures.
    • Rests on an assumption: If an increasing amount of muck waste is disposed of improperly, it will seriously affect the sustainable development of the social economy and ecological environment.
  • Probably not a substantial claim. The paper may give no reason why it holds. It may state two separate claims as one.

    Interpretationreasoning
    § Economic benefits · p. 9

    Under the platform governance mode, the platform can integrate modern information technology and governance systems of the public sector to adequately supervise muck waste management activities and provide means of collaboration between participants.

    “Under the platform governance mode, the platform can integrate modern information technology and governance systems of the public sector to adequately supervise muck waste management activities and provide means of collaboration between participants.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. It may be too vague to check against evidence. The paper may give no reason why it holds. It may state two separate claims as one.

    Interpretationreasoning
    § Participants · p. 4

    By processing and analyzing collected data through cloud computing, IoT, and big data, the muck waste management platform can offer more integrated, efficient, and smarter public governance services and ultimately promote sustainable development of muck waste management.

    “By processing and analyzing collected data through cloud computing, IoT, and big data, the muck waste management platform can offer more integrated, efficient, and smarter public governance services and ultimately promote sustainable development of muck waste management.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. It may be too vague to check against evidence. The paper may give no reason why it holds. It may state two separate claims as one.

    Interpretationreasoning
    § Value co-creation · p. 5

    Through the platform's information services, it is more convenient for muck transportation and disposal enterprises to communicate with the public sector and regard each other as collaborators to ensure that the public sector fully considers the actual needs of enterprises when formulating relevant policies.

    “Through the platform's information services, it is more convenient for muck transportation and disposal enterprises to communicate with the public sector and regard each other as collaborators to ensure that the public sector fully considers the actual needs of enterprises when formulating relevant policies.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim.

    Interpretationreasoning
    § Two-sided market structure · p. 4

    The platform governance mode redefines the role of the public sector from directly delivering public services to delivering public services through a muck waste management platform.

    “The platform governance mode redefines the role of the public sector from directly delivering public services to delivering public services through a muck waste management platform.”
    Quote in the paperSubstantial claim
  • It may state two separate claims as one.

    Interpretationreasoning
    § Environmental benefits · p. 9

    This integrated platform can provide services, including preventing illegal dumping, scheduling muck to sites where it is needed, and classifying muck waste.

    “This integrated platform can provide services, including preventing illegal dumping, scheduling muck to sites where it is needed, and classifying muck waste.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim. It may state two separate claims as one.

    Interpretationreasoning
    § Comparative evaluation of the process of the two governance modes · p. 8

    The platform has the function of governance and information storage.

    “The platform also has the function of governance and information storage.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim. The paper may give no reason why it holds.

    Interpretationreasoning
    § Comparative evaluation of the process of the two governance modes · p. 8

    Through data statistics and analysis functions, the platform can assist government supervisors to make more effective decisions.

    “Through the data statistics and analysis functions of the platform, the platform can assist government supervisors to make more effective decisions.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. It may be too vague to check against evidence. It may state two separate claims as one.

    Interpretationreasoning
    § Economic benefits · p. 9

    The governance mode will be transformed from extensive management to delicacy management, which can reduce time waste, cost waste, and labor waste and provide more open and sustainable government services.

    “In this sense, the governance mode will be transformed from extensive management to delicacy management, which can reduce time waste, cost waste, and labor waste and provide more open and sustainable government services.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper may give no reason why it holds. It may state two separate claims as one.

    Interpretationreasoning
    § Two-sided market structure · p. 5

    As the scale of two-sided users grows, the platform exhibits economies of scale, reducing governance costs and enhancing users' experience.

    “As the scale of two-sided users grows, the platform exhibits economies of scale, reducing governance costs and enhancing users' experience.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. The paper may give no reason why it holds.

    Interpretationnone given
    § Process analysis of the platform governance mode · p. 6

    The platform can automatically collect data on violations of muck waste management through technical means.

    “The platform can automatically collect data on violations of muck waste management through technical means.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. It may be too vague to check against evidence. The paper may give no reason why it holds.

    Interpretationreasoning
    § Platform governance mode · p. 3

    The platform governance mode can provide an effective way to realize integrated and effective management of muck waste in a circular economy.

    “Based on the literature review of muck waste management and platform governance mode, the platform governance mode can provide an effective way to realize integrated and effective management of muck waste in a circular economy.”
    Quote in the paperNot a substantial claim
  • It may state two separate claims as one.

    Interpretationreasoning
    § Environmental benefits · p. 9

    Environmental pollution and land encroachment problems have also improved.

    “Accordingly, environmental pollution and land encroachment problems have also improved.”
    Quote in the paperSubstantial claim
  • It may state two separate claims as one.

    Interpretationown data
    § Conclusions and future research · p. 9

    The platform governance mode can significantly improve the efficiency of the management of muck waste, which provides economic and environmental benefits.

    “After researching the characteristics of the platform governance mode for muck waste management and applying Petri net theory and a case study to process analysis, we find that the platform governance mode can significantly improve the efficiency of the management of muck waste, which provides economic and environmental benefits.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim. The paper’s conclusions may not depend on it. The paper may give no reason why it holds.

    Interpretationnone given
    § Two-sided market structure · p. 4

    The more the public sector collaborates with the muck waste management platform, the more efficient government services can be obtained by enterprises.

    “The more the public sector collaborates with the muck waste management platform, the more efficient government services can be obtained by enterprises.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim. It may be too vague to check against evidence.

    Interpretationreasoning
    § Economic benefits · p. 9

    By using the information data provided by the platform, residue transportation and disposal enterprises can achieve the vision of reducing costs and increasing performance according to regulatory requirements and their own production management needs in the future.

    “By using the information data provided by the platform, residue transportation and disposal enterprises can also achieve the vision of reducing costs and increasing performance according to regulatory requirements and their own production management needs in the future.”
    Quote in the paperNot a substantial claim
  • It may state two separate claims as one.

    Interpretationreasoning
    § Comparative evaluation of the process of the two governance modes · p. 8

    The muck waste management platform can increase cooperation with the public sector and improve the performance of management under the traditional governance mode.

    “By contrast, the muck waste management platform can increase cooperation with the public sector and improve the performance of management under the traditional governance mode.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Due to limitation of labor, material, and financial resources, the supervisory behavior of the public sector is limited; it is impossible for managers to monitor the disposal of waste in real-time, and oversight will inevitably occur.
    • Rests on an assumption: The muck transportation and disposal industry has a large profit margin, and the punishment cost is far lower than the income, so the punishment cost is not sufficient as a deterrent for enterprises.
32 of 32
  • The paper relies on this without support.

    The Petri net models built for the traditional and platform governance processes accurately represent the real muck waste management processes.

    “This paper therefore uses Petri net to build a platform governance model and traditional governance model of the muck waste management process.”
    “According to the actual situation of the governance mode of muck waste, we need to redefine the basic elements of the Petri net, as shown below.”
  • The paper relies on this without support.

    Nanjing's muck smart supervision platform is an instance of the proposed platform governance mode.

    “by using Nanjing's muck smart supervision platform as a case study to assess the effectiveness of the platform governance mode.”
  • The paper relies on this without support.

    Due to limitation of labor, material, and financial resources, the supervisory behavior of the public sector is limited; it is impossible for managers to monitor the disposal of waste in real-time, and oversight will inevitably occur.

    “Due to the limitation of labor, material, and financial resources, the supervisory behavior of the public sector is limited. It is impossible for managers to monitor the disposal of waste in real-time, and oversight will inevitably occur.”
  • The paper relies on this without support.

    The muck transportation and disposal industry has a large profit margin, and the punishment cost is far lower than the income, so the punishment cost is not sufficient as a deterrent for enterprises.

    “The muck transportation and disposal industry has a large profit margin, and the punishment cost is far lower than the income, so the punishment cost is not sufficient as a deterrent for enterprises.”
  • The paper relies on this without support.

    Muck waste can be reused as concrete aggregate, industrial raw material, or growing medium to reduce carbon emissions.

    “Finally, to reduce carbon emissions, muck waste can be reused as concrete aggregate, industrial raw material, or growing medium.”
  • The paper relies on this without support.

    The core of the platform governance model value co-creation lies in data sharing between different participants.

    “The core of the platform governance model value co-creation lies in data sharing between different participants.”
  • The paper relies on this without support.

    Inefficient management of muck waste has resulted in significant quantities of waste disposed in landfills or even illegally dumped without environmental protection measures.

    “The inefficient management of muck waste has resulted in significant quantities of waste disposed in landfills or even illegally dumped without environmental protection measures.”
  • The paper relies on this without support.

    If an increasing amount of muck waste is disposed of improperly, it will seriously affect the sustainable development of the social economy and ecological environment.

    “If an increasing amount of muck waste is disposed of improperly, it will seriously affect the sustainable development of the social economy and ecological environment.”
8 of 8

Citations

Cites

Flagged first, then by citations

1 of the 59 references couldn’t be matched to a known paper.

Research works printed but not linked: 5

  1. Gao J, Sun L (2022) The mechanism and path of digital economy development promoting the upgrading of China's industrial structure. Enterprise Econ 02:17–25. https://doi.org/10.13529/j.cnki.enterprise.economy.2022.02.002 · DOI
  2. Petri C, Reisig W (2008) Petri net. Scholarpedia 3(1):133–136
  3. Shrivastava P, Mishra S, Katiyar S K (2015) A review of solid waste management techniques using GIS and other technologies. International Conference on Computational Intelligence and Communication Networks (CICN): 1456–1459. https://doi.org/10.1109/CICN.2015.281 · DOI · Paper page
  4. Wang R, Zhang G, Wang N, Ren F, Chen R, Xi C (2020) Analysis on domestic and foreign construction and demolition waste related standards and patents. Environ Eng 38(3):27–32. https://doi.org/10.13205/j.hjgc.202003005 · DOI
  5. Zhong Q, Yang X, Wu Z (2021) A review of value co-creation in platform ecosystems. Syst Eng Theory Pract 41(2):421–430

Cited by

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Metadata

Authors
Wu, W., Yin, Y., Hao, J. L., Ma, W., Gong, G., & Yu, S.
Affiliations
  • Southeast University (CN)
  • Xi’an Jiaotong-Liverpool University (CN)
  • Suzhou University of Science and Technology (CN)
Corresponding author
Hao, Jian Li
Venue
Environmental Science and Pollution Research
Published
2023-08-15
Volume
31
Issue
12
Pages
17748-17759
ISSN
  • 0944-1344 (ISSN-L)
  • 1614-7499
OpenAlex
W4385827926
Cited by
12
References
59
Citations by year
2026: 2 · 2025: 6 · 2024: 4
FWCI
1.71
Type
journal article
Language
en
Open access
Locations
  • Environmental Science and Pollution Research (publishedVersion)
  • Research Square (submittedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Natural Science Foundation of China (72271052)
Topics
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Municipal Solid Waste Management
  • Physical Sciences › Engineering › Industrial and Manufacturing Engineering › Sustainable Industrial Ecology
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Waste Management and Recycling
Keywords
platform governance, circular economy, construction waste, Petri net simulation, resource recovery, Nanjing
MeSH terms
China, Computer Simulation, Waste Management, Recycling

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