Adsorption of Pb (II) and Zn (II) ions from aqueous solutions by Red Earth

被引：22

作者：

Esmaeili, Abbas ^{[1
]}

Eslami, Hadi ^{[2
,3
]}

机构：

[1] Rafsanjan Univ Med Sci, Sch Hlth, Dept Environm Hlth Engn, Occupat Environm Res Ctr, Rafsanjan, Iran

[2] Rafsanjan Univ Med Sci, Sch Hlth, Dept Environm Hlth Engn, Rafsanjan, Iran

[3] Rafsanjan Univ Med Sci, Pistachio Safety Res Ctr, Rafsanjan, Iran

来源：

METHODSX | 2020年 / 7卷

关键词：

Adsorption; Heavy metal removal; Lead; Zinc; Red Earth; LEAD REMOVAL; COMBINATION; ZN(II);

D O I：

10.1016/j.mex.2020.100804

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

This study was carried out to investigate Pb (II) and Zn (II) removal from aqueous solutions by Red Earth (RE) as a new local natural adsorbent in using the batch method. The chemical structure of RE adsorbent was characterized by XRF. Giles, Langmuir, and Freundlich isotherms were used to describe the adsorption data. The effect of metals concentration, initial pH, adsorbent dosage, and agitation time were studied. The results showed that RE contains of SiO2 (58 %) and Al2O3 (15.2 %) as major compounds. The equilibrium time was reached following 30 min and the maximum adsorption capacities (mg/g), based on Langmuir equation were 10.31 and 8.74 for Pb (II) and Zn (II), respectively. By increasing the initial metal ions concentration, the adsorption efficiencies were decreased and adsorption capacity of RE increased with an increase in the initial pH. (C) 2020 The Authors. Published by Elsevier B.V.

引用

页数：6

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