Apple peels as a potential adsorbent for removal of Cu and Cr from wastewater

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Iram Shahzadi, S. Mubarak, A. Farooq, Naqi Hussain
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引用次数: 0

Abstract

Solid waste management (SWM) is one of the biggest concerns of society and agricultural waste is generated in vast amount. In this study removal of Cu and Cr from wastewater using chemically modified apple peels was studied by following batch sorption experiments. Effects of metal concentration, adsorbent dose, pH, temperature and contact duration on the adsorption of Cu & Cr were investigated by using atomic adsorption spectrophotometer (AAS). SEM & EDX analysis of the adsorbents were recorded to study the morphology of the prepared adsorbents. Qmax value of apple peels is 25 for Cr & 22 for Cu, while for apple peel charcoal it is 33 for Cr & 47 for Cu, for treated apple peels Qmax is 50 for Cr & 52 for Cu adsorption. The data was processed using pseudo first, second order kinetic and intraparticle diffusion. Results depicted that the calculated adsorption capacities (qecal) were found to be close to the experimental values (qecal) by following pseudo-second order kinetics. The applicability of the Langmuir and Freundlich adsorption isotherms was tested. Results showed that Langmuir model is best fitted on adsorption data because regression factor R2 values are good for Langmuir model.
苹果皮作为一种潜在的吸附剂去除废水中的Cu和Cr
固体废物管理(SWM)是社会最关注的问题之一,农业废物产生量巨大。本研究以化学改性苹果皮为原料,通过后续的批量吸附实验,研究了苹果皮对废水中Cu和Cr的去除效果。采用原子吸附分光光度计(AAS)研究了金属浓度、吸附剂剂量、pH、温度和接触时间对Cu和Cr吸附的影响。对所制备的吸附剂进行SEM和EDX分析,研究其形貌。苹果皮对Cr的Qmax值为25,对Cu的Qmax值为22,苹果皮炭对Cr的Qmax值为33,对Cu的Qmax值为47,处理后的苹果皮对Cr的Qmax值为50,对Cu的Qmax值为52。采用伪一级、二级动力学和粒子内扩散对数据进行了处理。结果表明,通过拟二级动力学计算得到的吸附量(qecal)与实验值(qecal)接近。对Langmuir吸附等温线和Freundlich吸附等温线的适用性进行了测试。结果表明,Langmuir模型对吸附数据的拟合效果最好,回归因子R2值较好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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