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A preliminary study on Jatropha curcas as coagulant in wastewater treatment

Many coagulants, mainly inorganic, are widely used in conventional water and wastewater treatment. Recent studies reported the occurrence of some chronic diseases associated with residual coagulant in treated wastewater. The use of alternative coagulants which are biodegradable and environmentally f...

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Main Authors: Zainal Abidin, Zurina, Ismail, N., Yunus, Robiah, Ahamad, Intan Salwani, Idris, Azni
Format: Article
Language:English
Published: Taylor & Francis 2011
Online Access:http://psasir.upm.edu.my/id/eprint/23043/1/A%20preliminary%20study%20on%20Jatropha%20curcas%20as%20coagulant%20in%20wastewater%20treatment.pdf
http://psasir.upm.edu.my/id/eprint/23043/
http://www.tandfonline.com/doi/abs/10.1080/09593330.2010.521955
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spelling my.upm.eprints.230432015-12-07T04:37:28Z http://psasir.upm.edu.my/id/eprint/23043/ A preliminary study on Jatropha curcas as coagulant in wastewater treatment Zainal Abidin, Zurina Ismail, N. Yunus, Robiah Ahamad, Intan Salwani Idris, Azni Many coagulants, mainly inorganic, are widely used in conventional water and wastewater treatment. Recent studies reported the occurrence of some chronic diseases associated with residual coagulant in treated wastewater. The use of alternative coagulants which are biodegradable and environmentally friendly could alleviate the problem associated with these diseases. This work investigates the capability of Jatropha curcas seed and presscake (the residue left after oil extraction) to reduce the turbidity of wastewater through coagulation. The coagulant was prepared by dissolving Jatropha curcas seed and presscake powder into solution. Then jar tests were conducted on kaolin solution as the model wastewater. The Jatropha seed was found to be an effective coagulant with more than 96% of turbidity removal at pH 1–3 and pH 11–12. The highest turbidity removal was recorded at pH 3 using a dosage of 120 mg/L. The flocs formed using Jatropha were observed to be bigger and to sediment faster when compared with flocs formed using alum. The turbidity removal was high (>98%) at all turbidities (100 NTU to 8000 NTU), suggesting its suitability for a wide range of industrial wastewater. The performance of Jatropha presscake after extraction of oil was also comparable to the fresh seed and alum at highly acidic and highly alkaline conditions. The addition of Jatropha did not significantly affect the pH of the kaolin samples after treatment and the sludge volume produced was less in comparison to alum. These results strongly support the use of Jatropha curcas seed and presscake as a potential coagulant agent. Taylor & Francis 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/23043/1/A%20preliminary%20study%20on%20Jatropha%20curcas%20as%20coagulant%20in%20wastewater%20treatment.pdf Zainal Abidin, Zurina and Ismail, N. and Yunus, Robiah and Ahamad, Intan Salwani and Idris, Azni (2011) A preliminary study on Jatropha curcas as coagulant in wastewater treatment. Environmental Technology, 32 (9). pp. 971-977. ISSN 0959-3330; ESSN: 1479-487X http://www.tandfonline.com/doi/abs/10.1080/09593330.2010.521955 10.1080/09593330.2010.521955
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Many coagulants, mainly inorganic, are widely used in conventional water and wastewater treatment. Recent studies reported the occurrence of some chronic diseases associated with residual coagulant in treated wastewater. The use of alternative coagulants which are biodegradable and environmentally friendly could alleviate the problem associated with these diseases. This work investigates the capability of Jatropha curcas seed and presscake (the residue left after oil extraction) to reduce the turbidity of wastewater through coagulation. The coagulant was prepared by dissolving Jatropha curcas seed and presscake powder into solution. Then jar tests were conducted on kaolin solution as the model wastewater. The Jatropha seed was found to be an effective coagulant with more than 96% of turbidity removal at pH 1–3 and pH 11–12. The highest turbidity removal was recorded at pH 3 using a dosage of 120 mg/L. The flocs formed using Jatropha were observed to be bigger and to sediment faster when compared with flocs formed using alum. The turbidity removal was high (>98%) at all turbidities (100 NTU to 8000 NTU), suggesting its suitability for a wide range of industrial wastewater. The performance of Jatropha presscake after extraction of oil was also comparable to the fresh seed and alum at highly acidic and highly alkaline conditions. The addition of Jatropha did not significantly affect the pH of the kaolin samples after treatment and the sludge volume produced was less in comparison to alum. These results strongly support the use of Jatropha curcas seed and presscake as a potential coagulant agent.
format Article
author Zainal Abidin, Zurina
Ismail, N.
Yunus, Robiah
Ahamad, Intan Salwani
Idris, Azni
spellingShingle Zainal Abidin, Zurina
Ismail, N.
Yunus, Robiah
Ahamad, Intan Salwani
Idris, Azni
A preliminary study on Jatropha curcas as coagulant in wastewater treatment
author_facet Zainal Abidin, Zurina
Ismail, N.
Yunus, Robiah
Ahamad, Intan Salwani
Idris, Azni
author_sort Zainal Abidin, Zurina
title A preliminary study on Jatropha curcas as coagulant in wastewater treatment
title_short A preliminary study on Jatropha curcas as coagulant in wastewater treatment
title_full A preliminary study on Jatropha curcas as coagulant in wastewater treatment
title_fullStr A preliminary study on Jatropha curcas as coagulant in wastewater treatment
title_full_unstemmed A preliminary study on Jatropha curcas as coagulant in wastewater treatment
title_sort preliminary study on jatropha curcas as coagulant in wastewater treatment
publisher Taylor & Francis
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/23043/1/A%20preliminary%20study%20on%20Jatropha%20curcas%20as%20coagulant%20in%20wastewater%20treatment.pdf
http://psasir.upm.edu.my/id/eprint/23043/
http://www.tandfonline.com/doi/abs/10.1080/09593330.2010.521955
_version_ 1643827943778025472
score 13.211869

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