当前位置: X-MOL 学术Trans. Indian Inst. Met. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Removal of Hexavalent Chromium from Wastewater by Electrocoagulation (EC): Parametric Evaluation, Kinetic Study and Operating Cost
Transactions of the Indian Institute of Metals ( IF 1.5 ) Pub Date : 2020-04-18 , DOI: 10.1007/s12666-020-01962-4
Daisy Das , Barun Kumar Nandi

This work reports the results of experimental work to evaluate the effect of current density (Cj), initial pH, salt dose, distance between electrodes (ID) and initial Cr(VI) concentration (Ci) for efficient removal of Cr(VI) from wastewater using batch electrocoagulation (EC). Experimental results show that Fe/Fe electrode combination with initial pH of 4.0, Cj of 43.103 A m−2, ID of 1.0 cm and NaCl dose of 0.33 g L−1(conductivity: 912 µS cm−1) are desirable operating parameters to reduce Cr(VI) contamination of wastewater from 40 mg L−1 to below 0.05 mg L−1 after 60 min of EC. Kinetic analysis for Cr(VI) removal by EC follows first-order kinetic model. Sludge generated from the EC bath was characterized using FESEM and EDX analysis. Further, estimated energy consumption for EC was calculated as 1.78 kWh m−3 with electrode utilization of 0.0057 kg m−3 and operational cost of 0.1517 US$ m−3.



中文翻译:

通过电凝(EC)去除废水中的六价铬:参数评估,动力学研究和运营成本

这项工作报告了实验工作的结果,以评估电流密度(C j),初始pH值,盐剂量,电极之间的距离(ID)和初始Cr(VI)浓度(C i)的影响,以有效去除Cr(VI) ),并使用分批电凝(EC)从废水中提取。实验结果表明,初始pH为4.0,C j为43.103 A m -2,ID为1.0 cm和NaCl剂量为0.33 g L -1(电导率:912 µS cm -1)的Fe / Fe电极组合是理想的操作参数将废水中的Cr(VI)污染从40 mg L -1降低到0.05 mg L -1以下EC 60分钟后。通过EC去除Cr(VI)的动力学分析遵循一阶动力学模型。使用FESEM和EDX分析对EC浴产生的污泥进行表征。此外,EC的估计能耗为1.78 kWh m -3,电极利用率为0.0057 kg m -3,运行成本为0.1517 US $ m -3

更新日期:2020-04-24
down
wechat
bug