文献类型：期刊文献

英文题名：Effect of water chemistry on the uptake of Co(II) on graphene oxide investigated by batch technique

作者：Tang, X.[1]; Luo, J.[1]; Wang, L.[2]; Li, X.[1]

机构：[1] College of Yuanpei, Shaoxing University, Shaoxing, 312000, China; [2] College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, 312000, China

年份：2021

卷号：20

期号：3

起止页码：909

外文期刊名：Nature Environment and Pollution Technology

收录：EI(收录号：20213810928749)、Scopus(收录号：2-s2.0-85115258719)

基金：This work was supported by the Science Foundation of the Ministry of Education of China (201802227004).

语种：英文

外文关键词：Chemicals removal (water treatment) - Graphene - Ionic strength - Isotherms - Kinetic theory - Metal ions - Metals - Natural attenuation - Organic acids - Wastewater treatment

外文摘要：The uptake of Co(II) on graphene oxide (GO) by an adsorption process as a function of pH and ionic strength in the absence and presence of humic acid (HA) or fulvic acid (FA) was studied using batch technique. The results indicated that the uptake is strongly dependent on pH but independent of ionic strength. A stimulative effect of HA/FA on Co(II) uptake was found at pH 7.0. Kinetic studies suggest that Co(II) uptake on GO could be described more favorably by the pseudo-second-order kinetic model. The uptake isotherms can be described better by the Langmuir, Freundlich, and D-R models than by the linear model. The thermodynamic data calculated from the temperature-dependent uptake isotherms suggests that the uptake of Co(II) on GO is spontaneous and endothermic. Results of this work are of great importance for the environmental application of GO in the treatment of Co(II) from wastewater and indicated that GO is promising for the natural attenuation of Co(II) and related metal ions from aqueous solution. ? 2021 Technoscience Publications. All rights reserved.