TY - JOUR
T1 - Hybrid nanobubble-forward osmosis system for aquaculture wastewater treatment and reuse
AU - Farid, Muhammad Usman
AU - Choi, Paula Jungwon
AU - Kharraz, Jehad A.
AU - Lao, Jia Yong
AU - St-Hilaire, Sophie
AU - Ruan, Yuefei
AU - Lam, Paul Kwan Sing
AU - An, Alicia Kyoungjin
N1 - Publisher Copyright:
© 2022
PY - 2022/5/1
Y1 - 2022/5/1
N2 - The discharge of untreated effluent containing excessive pharmaceutical chemicals (PCs) from aquaculture farms has caused several negative effects on the aquatic ecosystems. Herein, we used a hybrid system based on two emerging technologies, namely forward osmosis (FO) and nanobubbles (NBs), as an energy-efficient, sustainable, and effective alternative to conventional processes for the treatment and reuse of aquaculture wastewater. The combination of NB technology with FO served as a single-step treatment process for the removal of aquaculture pharmaceutical contaminants. In the hybrid system, the FO membrane removed organic matter, dissolved solids, and pharmaceutical chemical residues from aquaculture effluents with a high efficiency (∼98%), whereas NBs functioned as a physical membrane-cleaning agent that enhanced the performance and longevity of the FO membrane. Notably, the results revealed minimal contribution of NBs for the direct degradation of the tested PC i.e. oxytetracycline (OTC), where air and ozone NBs could only oxidize nearly 11% and 30% of the OTC in the water respectively. The relatively higher OTC degradation by ozone NBs was attributed to the ozone NBs-induced reactive hydroxyl radicals (HO•) that react with OTC for its oxidative decomposition. We believe that the tested hybrid system offers a sustainable solution for aquaculture wastewater treatment as well as the recovery of antibiotics from the wastewater and will play a vital role in the sustainable development of the fisheries industry.
AB - The discharge of untreated effluent containing excessive pharmaceutical chemicals (PCs) from aquaculture farms has caused several negative effects on the aquatic ecosystems. Herein, we used a hybrid system based on two emerging technologies, namely forward osmosis (FO) and nanobubbles (NBs), as an energy-efficient, sustainable, and effective alternative to conventional processes for the treatment and reuse of aquaculture wastewater. The combination of NB technology with FO served as a single-step treatment process for the removal of aquaculture pharmaceutical contaminants. In the hybrid system, the FO membrane removed organic matter, dissolved solids, and pharmaceutical chemical residues from aquaculture effluents with a high efficiency (∼98%), whereas NBs functioned as a physical membrane-cleaning agent that enhanced the performance and longevity of the FO membrane. Notably, the results revealed minimal contribution of NBs for the direct degradation of the tested PC i.e. oxytetracycline (OTC), where air and ozone NBs could only oxidize nearly 11% and 30% of the OTC in the water respectively. The relatively higher OTC degradation by ozone NBs was attributed to the ozone NBs-induced reactive hydroxyl radicals (HO•) that react with OTC for its oxidative decomposition. We believe that the tested hybrid system offers a sustainable solution for aquaculture wastewater treatment as well as the recovery of antibiotics from the wastewater and will play a vital role in the sustainable development of the fisheries industry.
KW - Forward osmosis
KW - Membrane
KW - Nanobubbles
KW - Oxytetracycline
KW - Pharmaceuticals
UR - http://www.scopus.com/inward/record.url?scp=85124393217&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2022.135164
DO - 10.1016/j.cej.2022.135164
M3 - Article
AN - SCOPUS:85124393217
SN - 1385-8947
VL - 435
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 135164
ER -