TY - JOUR
T1 - A novel biotechnology based on periphytic biofilms with N-acyl-homoserine-lactones stimulation and lanthanum loading for phosphorus recovery
AU - Xu, Ying
AU - Kerr, Philip G
AU - Dolfing, Jan
AU - Rittmann, Bruce E.
AU - Wu, Yonghong
N1 - Funding information: This work was supported by the National Natural Science Foundation of China (41825021, 41961144010 and 31772396), the Original Inno-vation Project of Chinese Academy of Sciences (ZDBS-LY-DQC024), and the Natural Science Foundation of Jiangsu Province, China (BZ2019015 and BE2020731).
PY - 2022/3/1
Y1 - 2022/3/1
N2 - This study presents an approach for developing periphytic biofilm with N-acyl-homoserine-lactones (AHLs) stimulation and lanthanum (La, a rare earth element) loading, to achieve highly efficient and stable phosphorus (P) recovery from wastewater. AHLs stimulated biofilm growth and formation, also improved stable P entrapment by enhancing extracellular polymeric substance (EPS) production and optimizing P-entrapment bacterial communities. Periphytic biofilms loading La is based on ligand exchanges, and La loading achieved initial rapid P entrapment by surface adsorption. The combination of AHLs stimulation and La loading achieved 99.0% P entrapment. Interestingly, the enhanced EPS production stimulated by AHLs protected biofilms against La. Moreover, a method for P and La separately recovery from biofilms was developed, achieving 89-96% of P and 88-93% of La recovery. This study offers a promising biotechnology to reuse La from La-rich wastewater and recover P by biofilm doped with La, which results in a win-win situation for resource sustainability.
AB - This study presents an approach for developing periphytic biofilm with N-acyl-homoserine-lactones (AHLs) stimulation and lanthanum (La, a rare earth element) loading, to achieve highly efficient and stable phosphorus (P) recovery from wastewater. AHLs stimulated biofilm growth and formation, also improved stable P entrapment by enhancing extracellular polymeric substance (EPS) production and optimizing P-entrapment bacterial communities. Periphytic biofilms loading La is based on ligand exchanges, and La loading achieved initial rapid P entrapment by surface adsorption. The combination of AHLs stimulation and La loading achieved 99.0% P entrapment. Interestingly, the enhanced EPS production stimulated by AHLs protected biofilms against La. Moreover, a method for P and La separately recovery from biofilms was developed, achieving 89-96% of P and 88-93% of La recovery. This study offers a promising biotechnology to reuse La from La-rich wastewater and recover P by biofilm doped with La, which results in a win-win situation for resource sustainability.
KW - Periphytic biofilm
KW - Phosphorus recovery
KW - Lanthanum loading
KW - N-acyl-homoserine-lactones
UR - http://www.scopus.com/inward/record.url?scp=85121144603&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2021.126421
DO - 10.1016/j.biortech.2021.126421
M3 - Article
C2 - 34838961
SN - 0960-8524
VL - 347
SP - 1
EP - 8
JO - Bioresource Technology
JF - Bioresource Technology
M1 - 126421
ER -