Adsorption of chromium (Cr) from tannery wastewater using low-cost spent tea leaves adsorbent

被引：1
|
作者：
Md. Nur-E-Alam
Md. Abu Sayid Mia
Farid Ahmad
Md. Mafizur Rahman
机构：
[1] Bangladesh University of Engineering and Technology (BUET),Department of Civil Engineering
[2] University of Dhaka,Institute of Leather Engineering and Technology
[3] Bangladesh University of Engineering and Technology (BUET),Institute of Appropriate Technology
[4] Bangladesh Council of Scientific and Industrial Research,Leather Research Institute
来源：
Applied Water Science | 2018年 / 8卷
关键词：
Tanning; Chromium (Cr); Spent tea leaves; Adsorption; Batch process;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Leather tanning is consuming a large quantity of water and discharging a large volume of wastewater. This wastewater contains the high value of COD, BOD, TSS, TDS and heavy metals. In this study, spent tea leaves, a valueless waste produced during the manufacturing of tea beverage, were assessed for their potential to remove chromium (Cr) from tannery wastewater. Cr removal was studied by the batch process with varying adsorbent dose, contact time and pH of the solution to finding optimum conditions. The experiment results showed that maximum removal of Cr by spent tea leaves was 95.42% at 14 g/L of adsorbent dose and pH 10. The maximum adsorption capacity of Cr on tea waste was found 10.64 mg/g.
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