Cited by 92Algal biology and biofuel productionWastewater Treatment and ReuseAquatic Ecosystems and Phytoplankton Dynamics

Auto-flocculation microalgae species Tribonema sp. and Synechocystis sp. with T-IPL pretreatment to improve swine wastewater nutrient removal

Cheng, Pengfei, Chen, Dongjie, Liu, Wei, Cobb, Kirk, Zhou, Nan, Liu, Yuhuan, Liu, Hui, Wang, Qin +3 more·2020·Science of The Total Environment

Abstract

It is recognized coupling microalgae, which is rich in lipids or protein with wastewater treatment offers extra economic benefits that can potentially make microalgal production feasible by reducing production costs and providing environmental benefits. However, the pretreatment of high concentration nutrients such as ammonia nitrogen (NH 3-N), total phosphorus (TP) and chemical oxygen demand (COD) in swine wastewater is the premise of application for microalgae in wastewater treatment. This study two auto-flocculation microalgae Tribonema sp. and Synechocystis sp. were selected for evaluation; they were cultivated in diluted swine wastewater together after it was pretreated with titanium dioxide (TiO 2) plus intense pulsed light (T-IPL). The results showed that the growth of the two strains in the wastewater pretreated with T-IPL grew better than when grown without the pretreatment. The content of lipid in the two algae, cultured in the pretreated wastewater, was also higher than the lipid content from the un-pretreated wastewater; but protein content was lower. Overall, the removal efficiencies of pollutants NH 3-N, TP, and COD by the two microalgae in anaerobic digestion of swine wastewater (ADSW) with T-IPL pretreatment, were higher than the removal efficiencies without pretreatment. This research also indicates that these two auto-flocculation microalgae have the potential to reduce harvesting costs. And, using T-IPL to pretreat wastewater could provide a promising method for the pretreatment of wastewater.

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Crossref · 10.1016/j.scitotenv.2020.138263

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  • Microalgae biomass recovery efficiency is one of the most significant challenges faced by microalgae-based wastewater treatment due to microalgae's small size, negatively charged surface, and similar density to water.

    “However, microalgae biomass recovery efficiency is one of the most significant challenges faced by microalgae-based WWT due to its inherent characteristics, such as its small size, negatively charged surface, and similar density to water [167,168].”

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Authors
Cheng, P., Chen, D., Liu, W., Cobb, K., Zhou, N., Liu, Y., Liu, H., Wang, Q., Chen, P., Zhou, C., & Ruan, R.
Affiliations
  • Ningbo University (CN)
  • University of Minnesota (US)
  • Qilu University of Technology (CN)
  • Nanchang University (CN)
  • Zhongkai University of Agriculture and Engineering (CN)
Corresponding author
Ruan, Roger
Venue
Science of The Total Environment
Publisher
Elsevier BV
Published
2020-07
Volume
725
Pages
138263
ISSN
0048-9697 (ISSN-L)
OpenAlex
W3016218528
Cited by
92
References
45
Citations by year
2026: 4 · 2025: 10 · 2024: 18 · 2023: 17 · 2022: 23 · 2021: 12 · 2020: 8
FWCI
2.96
Type
journal article
Language
en
Open access
closed
Locations
  • The Science of The Total Environment (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Natural Science Foundation of Ningbo Municipality
  • Natural Science Foundation of Ningbo (431901822)
  • Natural Science Foundation of Jiangxi Province (20171BAB214014)
  • Chinese Academy of Sciences (KF2019N03)
  • China Postdoctoral Science Foundation (2017T100583, 2016M600616)
  • University of Minnesota
  • Natural Science Foundation of Zhejiang Province (LY20D060003)
  • Guangzhou Science, Technology and Innovation Commission (201807010056)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Wastewater Treatment and Reuse
  • Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
Keywords
Tribonema, Synechocystis, swine wastewater, titanium dioxide, intense pulsed light, microalgae pretreatment, nutrient removal, ammonia nitrogen, total phosphorus, chemical oxygen demand, anaerobic digestion, microalgal lipid content
MeSH terms
Nutrients, Animals, Flocculation, Nitrogen, Phosphorus, Swine, Biomass, Synechocystis, Microalgae, Wastewater

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