Pilot-scale removal of chromium from industrial wastewater using the ChromeBac (TM) system
The enzymatic reduction of Cr(VI) to Cr(III) by Cr(VI) resistant bacteria followed by chemical precip- itation constitutes the ChromeBac™ system. Acinetobacter haemolyticus was immobilized onto carrier material inside a 0.2 m3 bioreactor. Neutralized electroplating wastewater with Cr(VI) concentrati...
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| Format: | Article |
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Elsevier B.V.
2010
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| _version_ | 1796856233051815936 |
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| author | Ahmad, Wan Azlina Zakaria, Zainul Akmar Khasim, Ali Reza Alias, Muhamad Anuar Shaik Ismail, Shaik Muhammad Hasbullah |
| author_facet | Ahmad, Wan Azlina Zakaria, Zainul Akmar Khasim, Ali Reza Alias, Muhamad Anuar Shaik Ismail, Shaik Muhammad Hasbullah |
| author_sort | Ahmad, Wan Azlina |
| collection | ePrints |
| description | The enzymatic reduction of Cr(VI) to Cr(III) by Cr(VI) resistant bacteria followed by chemical precip- itation constitutes the ChromeBac™ system. Acinetobacter haemolyticus was immobilized onto carrier material inside a 0.2 m3 bioreactor. Neutralized electroplating wastewater with Cr(VI) concentration of 17–81 mg LÀ1 was fed into the bioreactor (0.11–0.33 m3 hÀ1). Complete Cr(VI) reduction to Cr(III) was obtained immediately after the start of bioreactor operation. Together with the ?occulation, coagula- tion and ?ltration, out?ow concentration of less than 0.02 mg Cr(VI) LÀ1 and 1 mg total Cr LÀ1 were always obtained. Performance of the bioreactor was not affected by ?uctuations in pH (6.2–8.4), Cr(VI) (17–81 mg LÀ1), nutrient (liquid pineapple waste, 1–20% v/v) and temperature (30–38 °C). Standby periods of up to 10 days can be tolerated without loss in activity. A robust yet effective biotechnology to remove chromium from wastewater is thus demonstrated. |
| first_indexed | 2024-03-05T18:40:25Z |
| format | Article |
| id | utm.eprints-26633 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T18:40:25Z |
| publishDate | 2010 |
| publisher | Elsevier B.V. |
| record_format | dspace |
| spelling | utm.eprints-266332018-11-09T08:11:07Z http://eprints.utm.my/26633/ Pilot-scale removal of chromium from industrial wastewater using the ChromeBac (TM) system Ahmad, Wan Azlina Zakaria, Zainul Akmar Khasim, Ali Reza Alias, Muhamad Anuar Shaik Ismail, Shaik Muhammad Hasbullah QD Chemistry The enzymatic reduction of Cr(VI) to Cr(III) by Cr(VI) resistant bacteria followed by chemical precip- itation constitutes the ChromeBac™ system. Acinetobacter haemolyticus was immobilized onto carrier material inside a 0.2 m3 bioreactor. Neutralized electroplating wastewater with Cr(VI) concentration of 17–81 mg LÀ1 was fed into the bioreactor (0.11–0.33 m3 hÀ1). Complete Cr(VI) reduction to Cr(III) was obtained immediately after the start of bioreactor operation. Together with the ?occulation, coagula- tion and ?ltration, out?ow concentration of less than 0.02 mg Cr(VI) LÀ1 and 1 mg total Cr LÀ1 were always obtained. Performance of the bioreactor was not affected by ?uctuations in pH (6.2–8.4), Cr(VI) (17–81 mg LÀ1), nutrient (liquid pineapple waste, 1–20% v/v) and temperature (30–38 °C). Standby periods of up to 10 days can be tolerated without loss in activity. A robust yet effective biotechnology to remove chromium from wastewater is thus demonstrated. Elsevier B.V. 2010 Article PeerReviewed Ahmad, Wan Azlina and Zakaria, Zainul Akmar and Khasim, Ali Reza and Alias, Muhamad Anuar and Shaik Ismail, Shaik Muhammad Hasbullah (2010) Pilot-scale removal of chromium from industrial wastewater using the ChromeBac (TM) system. Bioresource Technology, 101 (12). 4371 -4378. ISSN 0960-8524 http://dx.doi.org/10.1016/j.biortech.2010.01.106 DOI:10.1016/j.biortech.2010.01.106 |
| spellingShingle | QD Chemistry Ahmad, Wan Azlina Zakaria, Zainul Akmar Khasim, Ali Reza Alias, Muhamad Anuar Shaik Ismail, Shaik Muhammad Hasbullah Pilot-scale removal of chromium from industrial wastewater using the ChromeBac (TM) system |
| title | Pilot-scale removal of chromium from industrial wastewater using the ChromeBac (TM) system |
| title_full | Pilot-scale removal of chromium from industrial wastewater using the ChromeBac (TM) system |
| title_fullStr | Pilot-scale removal of chromium from industrial wastewater using the ChromeBac (TM) system |
| title_full_unstemmed | Pilot-scale removal of chromium from industrial wastewater using the ChromeBac (TM) system |
| title_short | Pilot-scale removal of chromium from industrial wastewater using the ChromeBac (TM) system |
| title_sort | pilot scale removal of chromium from industrial wastewater using the chromebac tm system |
| topic | QD Chemistry |
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