Cr(VI) removal from aqueous solution using Psidium guajava']java leaves as green adsorbent: column studies

被引：18
作者：
Mitra, Tania [1 ]
Das, Sudip Kumar [1 ]
机构：
[1] Univ Calcutta, Dept Chem Engn, 92 APC Rd, Kolkata 700009, India
来源：
APPLIED WATER SCIENCE | 2019年 / 9卷 / 07期
关键词：
Guava leaves; Green adsorbent; Fixed-bed; Thomas model; Bohart-Adams model; INDUSTRIAL WASTE-WATER; BED COLUMN; CHROMIUM(VI); BIOSORPTION; ADSORPTION; VI;
D O I：
10.1007/s13201-019-1029-2
中图分类号：
TV21 [水资源调查与水利规划];
学科分类号：
081501 ;
摘要：
This paper deals with the experimental investigation of the removal of the toxic Cr(VI) ions using a low-cost waste biomaterials Psidium guajava leaves as the adsorbent in continuous column mode. The influence of process parameters like bed depth, the rate of flow, and influent concentration on the removal was investigated to determine the adsorption characteristics by this adsorbent. The capacity of the adsorbent for metal uptake was decreased with the increase in bed depth from 4.07 to 2.89 mg g(-1), but it was increased with the rise in flow rate from 2.94 to 8.72 mg g(-1). The data obtained from the experiment were fitted good with Thomas model. The major functional groups were identified from the FTIR study which was responsible for the adsorption. The guava leaves are suitable for Cr(VI) removal from aqueous solution.
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页数：8
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