Comparative assessment of batch and column leaching studies for heavy metals release from Coal Fly Ash Bricks and Clay Bricks

被引：20

作者：

Gupta, Nidhi ^{[1
]}

Gedam, Vidyadhar V. ^{[2
]}

Moghe, Chandrashekhar ^{[1
]}

Labhasetwar, Pawan ^{[1
]}

机构：

[1] NEERI, Nagpur, Maharashtra, India

[2] Natl Inst Ind Engn NITIE, Environm Engn & Management Area, Mumbai, Maharashtra, India

来源：

ENVIRONMENTAL TECHNOLOGY & INNOVATION | 2019年 / 16卷

关键词：

Coal Fly Ash Brick (CFAB); Clay Brick (CB); Column and Batch leaching; Heavy metals; TRACE-ELEMENTS; WASTE; BEHAVIOR; IMPACT;

D O I：

10.1016/j.eti.2019.100461

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The present work explores the leaching of 12 heavy metal from Coal Fly Ash Brick (CFAB) and Clay Brick (CB) samples collected from Badarpur and Khaperkheda Thermal Power Plant (TPP) using batch and column leaching tests. The batch leaching test was performed fallowing standard procedure of WET, TCLP, SPLP and DWLP, and the column leaching studies were done at pH 4 and 7. The study also focuses on the comparative assessment of heavy metal leaching from collected samples. Results of both batch and column leaching experiments showed that the concentration of leached heavy metals was within the limit specified by Bureau of Indian Standard IS-10500:2012. It was observed that the heavy metals concentration leached in batch leaching experiments were comparatively more than column experiments. The study supports the use of Coal Fly Ash (CFA) during bricks manufacturing as there were minimum leaching observed from CFAB compared to CB. (C) 2019 Published by Elsevier B.V.

引用

页数：7

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