Enhanced Adsorption Performance and Regeneration of Magnetic FeO Nanoparticles Assisted Extracellular Polymeric Substances in Sulfonamide-contaminated Water

Overview

Journal Environ Sci Pollut Res Int

Publisher Springer

Specialties Environmental Health
Toxicology

Date 2019 Dec 18

PMID 31845242

Citations 1

Authors

Shanshan Pi

Ang Li

Di Cui

Zhou Su

Lu Zhou

Fang Ma

Affiliations

Soon will be listed here.

Abstract

It is still unclear about the superiority of the nanoscale FeO-assisted extracellular polymeric substances (EPS) compared to traditional EPS and its application feasibility in sulfonamide-contaminated aqueous system. This study reported eco-friendly and reusable EPS/FeO was applied in the sulfonamide-contaminated water treatment, including sulfamethoxazole (SMX), sulfamerazine (SM1), sulfamethazine (SM2) and sulfadiazine (SDZ), respectively. EPS/FeO exhibited the adsorption performance of 77.93%, 74.13%, 65.62%, and 56.64% for SMX, SM1, SM2 and SDZ, respectively, increased by 7.93%, 19.02%, 13.78% and 9.93% compared to traditional EPS. The initial pH value tuned adsorption performance via varying existing species of each sulfonamides. The adsorption process could be well fitted by Freundlich and pseudo-second-order kinetics models. Moreover, the multiple evidences from SEM, FTIR, zeta potential and XRD explained the adsorption mechanisms (i.e., chemisorption, ion exchange, hydroxyl group and hydrophobicity). Desorption and recycle adsorption experiments demonstrated the well regeneration ability of EPS/FeO as biosorbent (67.12% adsorption performance for SMX after five adsorption-desorption cycles), suggesting EPS/FeO was considered as a superior choice for sulfonamide-contaminated water treatment compared to the unrecyclable EPS.

Citing Articles

Efficacy of simultaneous hexavalent chromium biosorption and nitrogen removal by the aerobic denitrifying bacterium YC-34 from chromium-rich wastewater.

Yang K, Bu H, Zhang Y, Yu H, Huang S, Ke L Front Microbiol. 2022; 13:961815.

PMID: 35992714 PMC: 9389319. DOI: 10.3389/fmicb.2022.961815.

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