Reduction of Hexavalent Chromium to Trivalent Chromium using Sludge from Acetylene Gas Production

Electroplating industry generates harmful anionic heavy metal which is Hexavalent Chromium (Cr6+) that need to be treated before it can be discharged into the environment following accordance to the Environmental Industry (Effluent Regulation) 2009. These Cr6+ ions must be reduced to chromium trival...

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Published in:International Journal of Integrated Engineering
Main Author: Zainuddin N.A.M.; Sarwani N.M.; Puasa S.W.; Ismail K.N.
Format: Article
Language:English
Published: Penerbit UTHM 2022
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149781072&doi=10.30880%2fijie.2022.14.05.020&partnerID=40&md5=7b518dbfdaf5a20f14a2e639c5d86098
id 2-s2.0-85149781072
spelling 2-s2.0-85149781072
Zainuddin N.A.M.; Sarwani N.M.; Puasa S.W.; Ismail K.N.
Reduction of Hexavalent Chromium to Trivalent Chromium using Sludge from Acetylene Gas Production
2022
International Journal of Integrated Engineering
14
5
10.30880/ijie.2022.14.05.020
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149781072&doi=10.30880%2fijie.2022.14.05.020&partnerID=40&md5=7b518dbfdaf5a20f14a2e639c5d86098
Electroplating industry generates harmful anionic heavy metal which is Hexavalent Chromium (Cr6+) that need to be treated before it can be discharged into the environment following accordance to the Environmental Industry (Effluent Regulation) 2009. These Cr6+ ions must be reduced to chromium trivalent (Cr3+) using a reducing agent before undergoing precipitation process for complete removal of (Chromium) Cr component. The common reducing agent is using Sodium Metabisulphite (SMBS). This chemical generates harmful gases which are Hydrogen Sulphide (H2S) and Sulphur Dioxide (SO2). Circular economy practices encouraged by the Department of Environment (DOE) includes repurposing industrial waste, where the undesired by product is seen as a potential resource for other purposes. In this study, sludge from Acetylene gas production is used as a reducing agent. Acetylene production sludge (APS) contains high (Calcium) Ca element and (Ferum) Fe ions that are essential for the reduction of Cr6+ to Cr3+. The analysis of APS characterization is done by XRF and XRD instrument with the result of high Ca and Fe ions with (Ca(OH)2) alkaline properties. The initial concentration of Cr6+ is 3.25 mg/L and total Cr concentration is 1124 mg/L. The highest percentage reduction is 61.5% found at pH 5.51 with the APS dosage of 1.15 ml. For the effect of APS dosing, 100% reduction of Cr6+ is achieved at pH 6.04 with volume of APS used at 1.8 ml. © Universiti Tun Hussein Onn Malaysia Publisher’s Office
Penerbit UTHM
2229838X
English
Article
All Open Access; Bronze Open Access
author Zainuddin N.A.M.; Sarwani N.M.; Puasa S.W.; Ismail K.N.
spellingShingle Zainuddin N.A.M.; Sarwani N.M.; Puasa S.W.; Ismail K.N.
Reduction of Hexavalent Chromium to Trivalent Chromium using Sludge from Acetylene Gas Production
author_facet Zainuddin N.A.M.; Sarwani N.M.; Puasa S.W.; Ismail K.N.
author_sort Zainuddin N.A.M.; Sarwani N.M.; Puasa S.W.; Ismail K.N.
title Reduction of Hexavalent Chromium to Trivalent Chromium using Sludge from Acetylene Gas Production
title_short Reduction of Hexavalent Chromium to Trivalent Chromium using Sludge from Acetylene Gas Production
title_full Reduction of Hexavalent Chromium to Trivalent Chromium using Sludge from Acetylene Gas Production
title_fullStr Reduction of Hexavalent Chromium to Trivalent Chromium using Sludge from Acetylene Gas Production
title_full_unstemmed Reduction of Hexavalent Chromium to Trivalent Chromium using Sludge from Acetylene Gas Production
title_sort Reduction of Hexavalent Chromium to Trivalent Chromium using Sludge from Acetylene Gas Production
publishDate 2022
container_title International Journal of Integrated Engineering
container_volume 14
container_issue 5
doi_str_mv 10.30880/ijie.2022.14.05.020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149781072&doi=10.30880%2fijie.2022.14.05.020&partnerID=40&md5=7b518dbfdaf5a20f14a2e639c5d86098
description Electroplating industry generates harmful anionic heavy metal which is Hexavalent Chromium (Cr6+) that need to be treated before it can be discharged into the environment following accordance to the Environmental Industry (Effluent Regulation) 2009. These Cr6+ ions must be reduced to chromium trivalent (Cr3+) using a reducing agent before undergoing precipitation process for complete removal of (Chromium) Cr component. The common reducing agent is using Sodium Metabisulphite (SMBS). This chemical generates harmful gases which are Hydrogen Sulphide (H2S) and Sulphur Dioxide (SO2). Circular economy practices encouraged by the Department of Environment (DOE) includes repurposing industrial waste, where the undesired by product is seen as a potential resource for other purposes. In this study, sludge from Acetylene gas production is used as a reducing agent. Acetylene production sludge (APS) contains high (Calcium) Ca element and (Ferum) Fe ions that are essential for the reduction of Cr6+ to Cr3+. The analysis of APS characterization is done by XRF and XRD instrument with the result of high Ca and Fe ions with (Ca(OH)2) alkaline properties. The initial concentration of Cr6+ is 3.25 mg/L and total Cr concentration is 1124 mg/L. The highest percentage reduction is 61.5% found at pH 5.51 with the APS dosage of 1.15 ml. For the effect of APS dosing, 100% reduction of Cr6+ is achieved at pH 6.04 with volume of APS used at 1.8 ml. © Universiti Tun Hussein Onn Malaysia Publisher’s Office
publisher Penerbit UTHM
issn 2229838X
language English
format Article
accesstype All Open Access; Bronze Open Access
record_format scopus
collection Scopus
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