Competitive adsorption of heavy metals by extracellular polymeric substances extracted from Klebsiella sp. J1

Jixian Yang; Wei Wei; Shanshan Pi; Fang Ma; Ang Li; Dan Wu; Jie Xing

doi:10.1016/j.biortech.2015.08.011

Competitive adsorption of heavy metals by extracellular polymeric substances extracted from Klebsiella sp. J1

Jixian Yang
, Wei Wei
, Shanshan Pi
, Fang Ma
, Ang Li^*
, Dan Wu
, Jie Xing

^*Corresponding author for this work

School of Environment

Harbin Institute of Technology
Heilongjiang Provincial Research Academy of Environmental Sciences

Research output: Contribution to journal › Article › peer-review

119 Scopus citations

Abstract

The adsorption of Cu²⁺ and Zn²⁺ by extracellular polymeric substances (EPS) extracted from Klebsiella sp. J1 and competitive adsorption mechanism were investigated. Equilibrium adsorption capacities of Cu²⁺ (1.77mMg^-1) on Klebsiella sp. J1 EPS were higher than those of Zn²⁺ (1.36mMg^-1) in single systems. The competitive Langmuir and Langmuir-Freundlich isotherm models were proven to be effective in describing the experimental data of binary component system. The three dimensional sorption surfaces of binary component system demonstrated that the presence of Cu²⁺ more significantly decreased the sorption of Zn²⁺, but the sorption of Cu²⁺ was not disturbed by the presence of Zn²⁺. FTIR and EEM results revealed the adsorption sites of Cu²⁺ entirely overlapped with those of Zn²⁺. Cu²⁺ and Zn²⁺ showed competitive adsorption in binary systems, and Cu²⁺ was preferentially adsorbed because of the stronger complexation ability of the protein-like substances in Klebsiella sp. J1 EPS.

Original language	English
Pages (from-to)	533-539
Number of pages	7
Journal	Bioresource Technology
Volume	196
DOIs	https://doi.org/10.1016/j.biortech.2015.08.011
State	Published - 1 Nov 2015

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Competitive adsorption
Copper ion adsorption
Extracellular polymeric substance
Zinc-ion adsorption

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10.1016/j.biortech.2015.08.011

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title = "Competitive adsorption of heavy metals by extracellular polymeric substances extracted from Klebsiella sp. J1",

abstract = "The adsorption of Cu2+ and Zn2+ by extracellular polymeric substances (EPS) extracted from Klebsiella sp. J1 and competitive adsorption mechanism were investigated. Equilibrium adsorption capacities of Cu2+ (1.77mMg-1) on Klebsiella sp. J1 EPS were higher than those of Zn2+ (1.36mMg-1) in single systems. The competitive Langmuir and Langmuir-Freundlich isotherm models were proven to be effective in describing the experimental data of binary component system. The three dimensional sorption surfaces of binary component system demonstrated that the presence of Cu2+ more significantly decreased the sorption of Zn2+, but the sorption of Cu2+ was not disturbed by the presence of Zn2+. FTIR and EEM results revealed the adsorption sites of Cu2+ entirely overlapped with those of Zn2+. Cu2+ and Zn2+ showed competitive adsorption in binary systems, and Cu2+ was preferentially adsorbed because of the stronger complexation ability of the protein-like substances in Klebsiella sp. J1 EPS.",

keywords = "Competitive adsorption, Copper ion adsorption, Extracellular polymeric substance, Zinc-ion adsorption",

author = "Jixian Yang and Wei Wei and Shanshan Pi and Fang Ma and Ang Li and Dan Wu and Jie Xing",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

year = "2015",

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day = "1",

doi = "10.1016/j.biortech.2015.08.011",

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T1 - Competitive adsorption of heavy metals by extracellular polymeric substances extracted from Klebsiella sp. J1

AU - Yang, Jixian

AU - Wei, Wei

AU - Pi, Shanshan

AU - Ma, Fang

AU - Li, Ang

AU - Wu, Dan

AU - Xing, Jie

PY - 2015/11/1

Y1 - 2015/11/1

N2 - The adsorption of Cu2+ and Zn2+ by extracellular polymeric substances (EPS) extracted from Klebsiella sp. J1 and competitive adsorption mechanism were investigated. Equilibrium adsorption capacities of Cu2+ (1.77mMg-1) on Klebsiella sp. J1 EPS were higher than those of Zn2+ (1.36mMg-1) in single systems. The competitive Langmuir and Langmuir-Freundlich isotherm models were proven to be effective in describing the experimental data of binary component system. The three dimensional sorption surfaces of binary component system demonstrated that the presence of Cu2+ more significantly decreased the sorption of Zn2+, but the sorption of Cu2+ was not disturbed by the presence of Zn2+. FTIR and EEM results revealed the adsorption sites of Cu2+ entirely overlapped with those of Zn2+. Cu2+ and Zn2+ showed competitive adsorption in binary systems, and Cu2+ was preferentially adsorbed because of the stronger complexation ability of the protein-like substances in Klebsiella sp. J1 EPS.

AB - The adsorption of Cu2+ and Zn2+ by extracellular polymeric substances (EPS) extracted from Klebsiella sp. J1 and competitive adsorption mechanism were investigated. Equilibrium adsorption capacities of Cu2+ (1.77mMg-1) on Klebsiella sp. J1 EPS were higher than those of Zn2+ (1.36mMg-1) in single systems. The competitive Langmuir and Langmuir-Freundlich isotherm models were proven to be effective in describing the experimental data of binary component system. The three dimensional sorption surfaces of binary component system demonstrated that the presence of Cu2+ more significantly decreased the sorption of Zn2+, but the sorption of Cu2+ was not disturbed by the presence of Zn2+. FTIR and EEM results revealed the adsorption sites of Cu2+ entirely overlapped with those of Zn2+. Cu2+ and Zn2+ showed competitive adsorption in binary systems, and Cu2+ was preferentially adsorbed because of the stronger complexation ability of the protein-like substances in Klebsiella sp. J1 EPS.

KW - Competitive adsorption

KW - Copper ion adsorption

KW - Extracellular polymeric substance

KW - Zinc-ion adsorption

UR - https://www.scopus.com/pages/publications/84939601685

U2 - 10.1016/j.biortech.2015.08.011

DO - 10.1016/j.biortech.2015.08.011

M3 - 文章

C2 - 26291413

AN - SCOPUS:84939601685

SN - 0960-8524

VL - 196

SP - 533

EP - 539

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Competitive adsorption of heavy metals by extracellular polymeric substances extracted from Klebsiella sp. J1

Abstract

UN SDGs

Keywords

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