Leachability of heavy metals from cement mortar bricks modified with water treatment alum sludge

Leachability profiles of aluminium (Al), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), lead (Pb) and zinc (Zn) from raw drinking water treatment sludge (WTS), laboratory produced sludge and WTS-cement solidified bricks (CMWTS) were studied to determine the potenti...

Full description

Saved in:

Bibliographic Details
Main Author:	Paramalinggam, Thanalechumi
Format:	Thesis
Language:	English
Published:	2012
Subjects:	TD Environmental technology Sanitary engineering
Online Access:	http://eprints.utm.my/id/eprint/34637/5/ThanalechumiParamalinggamMFS2012.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.34637
record_format	uketd_dc
spelling	my-utm-ep.346372017-09-29T05:10:43Z Leachability of heavy metals from cement mortar bricks modified with water treatment alum sludge 2012-07 Paramalinggam, Thanalechumi TD Environmental technology. Sanitary engineering Leachability profiles of aluminium (Al), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), lead (Pb) and zinc (Zn) from raw drinking water treatment sludge (WTS), laboratory produced sludge and WTS-cement solidified bricks (CMWTS) were studied to determine the potential of reusing WTS in brick manufacturing. The leachability of the heavy metals was investigated using the extraction method. Leach Tests were performed on WTS obtained from the Semanggar Water Treatment Plant, Kota Tinggi, Johore, Malaysia; laboratory produced sludge, and CMWTS produced using the solidification-stabilization (S/S) technique. Structural identity, chemical composition, effectiveness of the solidification-stabilization (S/S) technique and strengths of bricks were also investigated. Surface and other physicochemical properties were studied using FESEM, SEM, BET-surface area analyzer, XRD, FTIR, TOC, compressive strength test and TG analyzer. Leach tests showed that some heavy metals were leached out from samples in acidic solution but very low levels of heavy metals were leached in water and basic conditions and indicating that the WTS was safe for reuse. When the WTS was solidified in cement mortar, the compressive strength of the bricks increased with increasing curing time, pH of the curing solution and amount of WTS added. However, a reduction of compressive strength was observed at 20% WTS in the CMWTS bricks. It can be concluded that WTS has the potential for reuse in brick manufacturing as the addition of up to 20% WTS in cement mortar produced bricks with good strength properties as well as reduced leachability of the selected heavy metals from WTS. 2012-07 Thesis http://eprints.utm.my/id/eprint/34637/ http://eprints.utm.my/id/eprint/34637/5/ThanalechumiParamalinggamMFS2012.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TD Environmental technology Sanitary engineering
spellingShingle	TD Environmental technology Sanitary engineering Paramalinggam, Thanalechumi Leachability of heavy metals from cement mortar bricks modified with water treatment alum sludge
description	Leachability profiles of aluminium (Al), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), lead (Pb) and zinc (Zn) from raw drinking water treatment sludge (WTS), laboratory produced sludge and WTS-cement solidified bricks (CMWTS) were studied to determine the potential of reusing WTS in brick manufacturing. The leachability of the heavy metals was investigated using the extraction method. Leach Tests were performed on WTS obtained from the Semanggar Water Treatment Plant, Kota Tinggi, Johore, Malaysia; laboratory produced sludge, and CMWTS produced using the solidification-stabilization (S/S) technique. Structural identity, chemical composition, effectiveness of the solidification-stabilization (S/S) technique and strengths of bricks were also investigated. Surface and other physicochemical properties were studied using FESEM, SEM, BET-surface area analyzer, XRD, FTIR, TOC, compressive strength test and TG analyzer. Leach tests showed that some heavy metals were leached out from samples in acidic solution but very low levels of heavy metals were leached in water and basic conditions and indicating that the WTS was safe for reuse. When the WTS was solidified in cement mortar, the compressive strength of the bricks increased with increasing curing time, pH of the curing solution and amount of WTS added. However, a reduction of compressive strength was observed at 20% WTS in the CMWTS bricks. It can be concluded that WTS has the potential for reuse in brick manufacturing as the addition of up to 20% WTS in cement mortar produced bricks with good strength properties as well as reduced leachability of the selected heavy metals from WTS.
format	Thesis
qualification_level	Master's degree
author	Paramalinggam, Thanalechumi
author_facet	Paramalinggam, Thanalechumi
author_sort	Paramalinggam, Thanalechumi
title	Leachability of heavy metals from cement mortar bricks modified with water treatment alum sludge
title_short	Leachability of heavy metals from cement mortar bricks modified with water treatment alum sludge
title_full	Leachability of heavy metals from cement mortar bricks modified with water treatment alum sludge
title_fullStr	Leachability of heavy metals from cement mortar bricks modified with water treatment alum sludge
title_full_unstemmed	Leachability of heavy metals from cement mortar bricks modified with water treatment alum sludge
title_sort	leachability of heavy metals from cement mortar bricks modified with water treatment alum sludge
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2012
url	http://eprints.utm.my/id/eprint/34637/5/ThanalechumiParamalinggamMFS2012.pdf
_version_	1747816223001804800

Leachability of heavy metals from cement mortar bricks modified with water treatment alum sludge

Similar Items