Metal ion free watermelon (Citrullus lanatus) rind as adsorbent for the removal of lead and copper ions from aqueous solution

被引：35
作者：
Lakshmipathy, R. [1 ]
Sarada, N. C. [2 ]
机构：
[1] KCG Coll Technol, Ctr Mat Sci, Madras 600097, Tamil Nadu, India
[2] VIT Univ, Sch Adv Sci, Environm & Analyt Chem Div, Vellore 632014, Tamil Nadu, India
来源：
DESALINATION AND WATER TREATMENT | 2016年 / 57卷 / 33期
关键词：
Watermelon rind; Protonation; Adsorption; Desorption; Water treatment; PEANUT HULL PELLETS; HEAVY-METALS; BIOSORPTION; SORPTION; SORBENT; CADMIUM(II); CU(II); CD(II);
D O I：
10.1080/19443994.2015.1072064
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Chemically protonated watermelon rind (PWR) was evaluated as a low-cost and efficient adsorbent for the removal of Pb2+ and Cu2+ ions from aqueous solution. Protonation of watermelon rind (WR) was carried out with 0.1 M HCl as protonating agent. The adsorption process was found to be spontaneous and exothermic in nature. Kinetic investigations suggest that the present system follows pseudo-second-order kinetic model and rate-limiting step is not chemical reaction. The maximum loading capacity of PWR was found to be 116.2 and 39.2 mg g(-1) for Pb2+ and Cu2+ ions, respectively. FTIR and energy dispersive X-ray analyses supported the sorption of metal ions onto PWR. The results suggested that WR can be an effective adsorbent for the removal of heavy metal ions from aqueous solution.
引用
收藏
页码：15362 / 15372
页数：11
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