TY - JOUR
T1 - Advances, challenges, and prospects in microalgal-bacterial symbiosis system treating heavy metal wastewater
AU - Zhou, Xing-Rui
AU - Wang, Rong
AU - Tang, Cong-Cong
AU - Varrone, Cristiano
AU - He, Zhang Wei
AU - Li, Zhi-Hua
AU - Wang, Xiaochang C.
N1 - Copyright © 2023 Elsevier Ltd. All rights reserved.
PY - 2023/12
Y1 - 2023/12
N2 - Heavy metal (HM) pollution, particularly in its ionic form in water bodies, is a chronic issue threatening environmental security and human health. The microalgal-bacterial symbiosis (MABS) system, as the basis of water ecosystems, has the potential to treat HM wastewater in a sustainable manner, with the advantages of environmental friendliness and carbon sequestration. However, the differences between laboratory studies and engineering practices, including the complexity of pollutant compositions and extreme environmental conditions, limit the applications of the MABS system. Additionally, the biomass from the MABS system containing HMs requires further disposal or recycling. This review summarized the recent advances of the MABS system treating HM wastewater, including key mechanisms, influence factors related to HM removal, and the tolerance threshold values of the MABS system to HM toxicity. Furthermore, the challenges and prospects of the MABS system in treating actual HM wastewater are analyzed and discussed, and suggestions for biochar preparation from the MABS biomass containing HMs are provided. This review provides a reference point for the MABS system treating HM wastewater and the corresponding challenges faced by future engineering practices.
AB - Heavy metal (HM) pollution, particularly in its ionic form in water bodies, is a chronic issue threatening environmental security and human health. The microalgal-bacterial symbiosis (MABS) system, as the basis of water ecosystems, has the potential to treat HM wastewater in a sustainable manner, with the advantages of environmental friendliness and carbon sequestration. However, the differences between laboratory studies and engineering practices, including the complexity of pollutant compositions and extreme environmental conditions, limit the applications of the MABS system. Additionally, the biomass from the MABS system containing HMs requires further disposal or recycling. This review summarized the recent advances of the MABS system treating HM wastewater, including key mechanisms, influence factors related to HM removal, and the tolerance threshold values of the MABS system to HM toxicity. Furthermore, the challenges and prospects of the MABS system in treating actual HM wastewater are analyzed and discussed, and suggestions for biochar preparation from the MABS biomass containing HMs are provided. This review provides a reference point for the MABS system treating HM wastewater and the corresponding challenges faced by future engineering practices.
KW - Adsorption mechanism
KW - Challenges
KW - Heavy metal wastewater
KW - Microalgal-bacterial symbiosis system
KW - Response mechanism
UR - http://www.scopus.com/inward/record.url?scp=85174456504&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2023.140448
DO - 10.1016/j.chemosphere.2023.140448
M3 - Review article
C2 - 37839742
AN - SCOPUS:85174456504
SN - 0045-6535
VL - 345
JO - Chemosphere
JF - Chemosphere
M1 - 140448
ER -