Cited by 174Adsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterialsHeavy metals in environment

Progress and future prospects in biochar composites: Application and reflection in the soil environment

Mandal, Sandip, Pu, Shengyan, Adhikari, Sangeeta, Ma, Hui, Kim, Do-Heyoung, Bai, Yingchen, Hou, Deyi·2021·Critical Reviews in Environmental Science and Technology

Abstract

In recent years, environmental pollution is a major global concern and adversely affecting human health and the economy. The environmental properties of soil are exceptionally complex, which makes the remediation and treatment more challenging and expensive. In this aspect, sustainable materials (biomaterials, biochar, and composites) present an effective and efficient remediation solution. Exactly, biochar and its relative composites can achieve novel properties with addition of metal oxides, surface agents, and nano-material. The present review study provides quantitative analysis and addresses the advantages of using biochar composites relative with pure biochar. The synthesis of Nano-metal assisted biochar, properties and utilization in improving soil properties as well as heavy metal removal are reviewed. Specific attention has been paid to the impacts of biochar and its composite on soil fundamental properties such as pH, cation exchange efficiency, bulk density, porosity, water retention capability, soil organic matter (SOM) and redox reactions. Significant emphasis is focused on soil remediation, in particular, the elimination of heavy metals utilizing biochar-based composites. Further research is urged to verify the proposed mechanisms involved biochar composites-microbial interactions and heavy metal remediation considering short term and long term efficiency for improvement.

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Registry

Crossref · 10.1080/10643389.2020.1713030

Cites

224 of 224 references verified0 citation errors · 0 not checkable

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  • At pyrolysis under low temperatures (200-400°C), biochar is characterised by more oxygen-containing functional groups, which stimulate nutrient exchange and improve soil fertility.

    “However, at pyrolysis under low temperatures (200-400°C), biochar is characterised by having more oxygen-containing functional groups, such as -COOH, -OH, C=O, phenolic -OH and -CHO groups, which stimulate nutrient exchange and, thus, improve soil fertility (Mandal et al. 2020;Ralebitso-Senior and Orr 2016).”

    From Biochar and its importance on nutrient dynamics in soil and plant (2020) · cites this paper as Mandal et al. 2020

  • Biochar reduced the tensile strength and cracks of a surface soil.

    “Biochar reduced the tensile strength and cracks of a surface soil (Mandal et al. 2020)”

    From Biochar and its importance on nutrient dynamics in soil and plant (2020) · cites this paper as Mandal et al. 2020

  • Biochar application increased soil water retention more in a sandy soil than in a loamy soil or a clay soil.

    “biochar application was shown to increase soil water retention more in a sandy soil than a loamy soil or a clay soil (Mandal et al. 2020).”

    From Biochar and its importance on nutrient dynamics in soil and plant (2020) · cites this paper as Mandal et al. 2020

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Authors
Mandal, S., Pu, S., Adhikari, S., Ma, H., Kim, D.-H., Bai, Y., & Hou, D.
Affiliations
  • Chengdu University of Technology (CN)
  • Chonnam National University (KR)
  • University of Copenhagen (DK)
  • Chinese Research Academy of Environmental Sciences (CN)
  • Tsinghua University (CN)
Corresponding author
Pu, Shengyan
Venue
Critical Reviews in Environmental Science and Technology
Published
2020-01-24
Volume
51
Issue
3
Pages
219-271
ISSN
  • 1064-3389 (ISSN-L)
  • 1547-6537
OpenAlex
W3002314215
Cited by
174
References
224
Citations by year
2026: 20 · 2025: 28 · 2024: 29 · 2023: 38 · 2022: 28 · 2021: 24 · 2020: 7
FWCI
7.43
Type
journal article
Language
en
Open access
closed
Locations
  • Critical Reviews in Environmental Science and Technology (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
Keywords
biochar composites, soil remediation, heavy metal removal, soil properties, cation exchange capacity, soil organic matter, redox reactions

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