Biosorption behavior and mechanism of sulfonamide antibiotics in aqueous solution on extracellular polymeric substances extracted from Klebsiella sp. J1

Shanshan Pi; Ang Li; Di Cui; Zhou Su; Liang Feng; Fang Ma; Jixian Yang

doi:10.1016/j.biortech.2018.10.054

Biosorption behavior and mechanism of sulfonamide antibiotics in aqueous solution on extracellular polymeric substances extracted from Klebsiella sp. J1

Bioresour Technol. 2019 Jan:272:346-350. doi: 10.1016/j.biortech.2018.10.054. Epub 2018 Oct 24.

Authors

Shanshan Pi¹, Ang Li², Di Cui³, Zhou Su¹, Liang Feng¹, Fang Ma¹, Jixian Yang¹

Affiliations

¹ State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
² State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China. Electronic address: li.ang@hit.edu.cn.
³ State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China; Research Center on Life Sciences and Environmental Sciences, Harbin University of Commerce, Harbin 150076, PR China.

PMID: 30384209
DOI: 10.1016/j.biortech.2018.10.054

Abstract

The pollution of sulfonamide antibiotics in aqueous system has attracted an increasing attention, however, interactions between the effective biomaterial and sulfonamide antibiotics are not clear. In this study, adsorption capacity and interaction mechanism of EPS from Klebsiella sp. J1 and sulfonamide antibiotics were investigated. The biosorption efficiency of EPS were 70.0%, 55.1%, 51.8%, and 46.7% for SMX, SM1, SM2, and SDZ, respectively. Qualitative and quantitative analysis displayed the almost consistent adsorption mechanism for four sulfonamides on EPS. The adsorption behavior could be described by Langmuir, Freundlich isotherms and the pseudo-second-order kinetics model. Model parameters indicated the chemisorption was the major adsorption type responsible for the adsorption process and demonstrated a good adsorption capacity of EPS for sulfonamides, also confirmed by the SEM observation. Interestingly, 3D-EEM suggested that the driving force was mainly from the hydrophobic interaction of tryptophan and tyrosine during the binding process of EPS and sulfonamides.

Keywords: Adsorption; Extracellular polymeric substances; Klebsiella sp. J1; Sulfonamide antibiotics.

MeSH terms

Adsorption
Anti-Bacterial Agents / metabolism*
Extracellular Polymeric Substance Matrix / metabolism*
Kinetics
Klebsiella / metabolism*
Solutions
Sulfanilamide / metabolism*

Substances

Anti-Bacterial Agents
Solutions
Sulfanilamide