Cover Image

Bacterial reduction of CR (VI)-containing electroplating wastewater utilizing agricultural wastes

The bacterial reduction of Cr(VI) from industrial wastewater was evaluated using a 2.0-m3 bioreactor. Liquid pineapple waste was used as a nutrient for the biofilm community formed inside the bioreactor. The use of rubber wood sawdust as packing material was able to immobilize more than 106 CFU mL−1...

Full description

Saved in:
Bibliographic Details
Main Authors: Ahmad, Wan Azlina, Surif, Salmijah, Zakaria, Zainul Akmar
Format: Book Section
Published: Nova Science Publishers, Inc. 2011
Subjects:
TD Environmental technology. Sanitary engineering
Online Access:http://eprints.utm.my/id/eprint/45330/
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.utm.45330
record_format eprints
spelling my.utm.453302017-08-10T04:41:49Z http://eprints.utm.my/id/eprint/45330/ Bacterial reduction of CR (VI)-containing electroplating wastewater utilizing agricultural wastes Ahmad, Wan Azlina Surif, Salmijah Zakaria, Zainul Akmar TD Environmental technology. Sanitary engineering The bacterial reduction of Cr(VI) from industrial wastewater was evaluated using a 2.0-m3 bioreactor. Liquid pineapple waste was used as a nutrient for the biofilm community formed inside the bioreactor. The use of rubber wood sawdust as packing material was able to immobilize more than 106 CFU mL−1 of Acinetobacter haemolyticus cells after 3 days of contact time. Complete reduction of 15–240 mg L−1 of Cr(VI) was achieved even after 3 months of bioreactor operation. Cr(VI) was not detected in the final effluent fraction indicating complete removal of Cr from solution from the flocculation/coagulation step and the unlikely re-oxidation of Cr(III) into Cr(VI). Impatiens balsamina L. and Gomphrena globosa L. showed better growth in the presence of soil–sludge mixture compared to Coleus scutellarioides (L.) Benth. Significant amounts of Cr accumulated at different sections of the plants indicate its potential application in Cr phytoremediation effort. The bacterial-based system was also determined not to be detrimental to human health based on the low levels of Cr detected in the hair and nail samples of the plant operators. Thus, it can be said that bacterial-based Cr(VI) treatment system is a feasible alternative to the conventional system especially for lower Cr(VI) concentrations, where sludge generated can be used as growth supplement for ornamental plant as well as not detrimental to the health of the workers. Nova Science Publishers, Inc. 2011 Book Section PeerReviewed Ahmad, Wan Azlina and Surif, Salmijah and Zakaria, Zainul Akmar (2011) Bacterial reduction of CR (VI)-containing electroplating wastewater utilizing agricultural wastes. In: Bacteria in Environmental Biotechnology: The Malaysian Case Study-Analysis, Waste Utilization and Wastewater Remediation. Nova Science Publishers, Inc., Hauppauge, New York, p. 40559. ISBN 978-1-61728-350-5
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TD Environmental technology. Sanitary engineering
spellingShingle TD Environmental technology. Sanitary engineering
Ahmad, Wan Azlina
Surif, Salmijah
Zakaria, Zainul Akmar
Bacterial reduction of CR (VI)-containing electroplating wastewater utilizing agricultural wastes
description The bacterial reduction of Cr(VI) from industrial wastewater was evaluated using a 2.0-m3 bioreactor. Liquid pineapple waste was used as a nutrient for the biofilm community formed inside the bioreactor. The use of rubber wood sawdust as packing material was able to immobilize more than 106 CFU mL−1 of Acinetobacter haemolyticus cells after 3 days of contact time. Complete reduction of 15–240 mg L−1 of Cr(VI) was achieved even after 3 months of bioreactor operation. Cr(VI) was not detected in the final effluent fraction indicating complete removal of Cr from solution from the flocculation/coagulation step and the unlikely re-oxidation of Cr(III) into Cr(VI). Impatiens balsamina L. and Gomphrena globosa L. showed better growth in the presence of soil–sludge mixture compared to Coleus scutellarioides (L.) Benth. Significant amounts of Cr accumulated at different sections of the plants indicate its potential application in Cr phytoremediation effort. The bacterial-based system was also determined not to be detrimental to human health based on the low levels of Cr detected in the hair and nail samples of the plant operators. Thus, it can be said that bacterial-based Cr(VI) treatment system is a feasible alternative to the conventional system especially for lower Cr(VI) concentrations, where sludge generated can be used as growth supplement for ornamental plant as well as not detrimental to the health of the workers.
format Book Section
author Ahmad, Wan Azlina
Surif, Salmijah
Zakaria, Zainul Akmar
author_facet Ahmad, Wan Azlina
Surif, Salmijah
Zakaria, Zainul Akmar
author_sort Ahmad, Wan Azlina
title Bacterial reduction of CR (VI)-containing electroplating wastewater utilizing agricultural wastes
title_short Bacterial reduction of CR (VI)-containing electroplating wastewater utilizing agricultural wastes
title_full Bacterial reduction of CR (VI)-containing electroplating wastewater utilizing agricultural wastes
title_fullStr Bacterial reduction of CR (VI)-containing electroplating wastewater utilizing agricultural wastes
title_full_unstemmed Bacterial reduction of CR (VI)-containing electroplating wastewater utilizing agricultural wastes
title_sort bacterial reduction of cr (vi)-containing electroplating wastewater utilizing agricultural wastes
publisher Nova Science Publishers, Inc.
publishDate 2011
url http://eprints.utm.my/id/eprint/45330/
_version_ 1643651710662475776
score 13.211869

Similar Items