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Biosorption Mechanism of Aqueous Pb2+, Cd2+, and Ni2+ Ions on Extracellular Polymeric Substances (EPS)
المؤلفون المشاركون
Chen, Ting
Zhou, Lu
Cui, Di
Tan, Chong
Deng, Hongna
Gu, Xunxue
Pi, Shanshan
Li, Ang
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-06-24
دولة النشر
مصر
عدد الصفحات
9
التخصصات الرئيسية
الملخص EN
Heavy metal pollution has been a focus with increasing attention, especially Pb2+, Cd2+, and Ni2+ in an aqueous environment.
The adsorption capacity and mechanism of extracellular polymeric substances (EPS) from Agrobacterium tumefaciens F2 for three heavy metals were investigated in this study.
The adsorption efficiency of 94.67%, 94.41%, and 77.95% were achieved for Pb2+, Cd2+, and Ni2+ adsorption on EPS, respectively.
The experimental data of adsorption could be well fitted by Langmuir, Freundlich, Dubinin–Radushkevich isotherm models, and pseudo-second-order kinetic model.
Model parameters analysis demonstrated the great adsorption efficiency of EPS, especially for Pb2+, and chemisorption was the rate-limiting step during the adsorption process.
The functional groups of C=O of carboxyl and C-O-C from sugar derivatives in EPS played the major role in the adsorption process judged by FTIR.
In addition, 3D-EEM spectra indicated that tyrosine also assisted EPS adsorption for three heavy metals.
But EPS from strain F2 used the almost identical adsorption mechanism for three kinds of divalent ions of heavy metals, so the adsorption efficiency difference of Pb2+, Cd2+, and Ni2+ on EPS could be correlated to the inherent characteristics of each heavy metal.
This study gave the evidence that EPS has a great application potential as a bioadsorbent in the treatment of heavy metals pollution.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Cui, Di& Tan, Chong& Deng, Hongna& Gu, Xunxue& Pi, Shanshan& Chen, Ting…[et al.]. 2020. Biosorption Mechanism of Aqueous Pb2+, Cd2+, and Ni2+ Ions on Extracellular Polymeric Substances (EPS). Archaea،Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1130482
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Cui, Di…[et al.]. Biosorption Mechanism of Aqueous Pb2+, Cd2+, and Ni2+ Ions on Extracellular Polymeric Substances (EPS). Archaea No. 2020 (2020), pp.1-9.
https://search.emarefa.net/detail/BIM-1130482
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Cui, Di& Tan, Chong& Deng, Hongna& Gu, Xunxue& Pi, Shanshan& Chen, Ting…[et al.]. Biosorption Mechanism of Aqueous Pb2+, Cd2+, and Ni2+ Ions on Extracellular Polymeric Substances (EPS). Archaea. 2020. Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1130482
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1130482
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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