Comparative removal of suspended solids from landfill leachate by Hibiscus rosa-sinensis leaf extract and alum

Hibiscus rosa-sinensis is a biodegradable material that has not yet been tested for its flocculating properties. The objective of this study was to examine the efficiency of coagulation–flocculation processes for the removal of suspended solids (SS) from landfill leachate using aluminium sulphate (a...

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Bibliographic Details
Published in:Desalination and water treatment 2013-02, Vol.51 (10-12), p.2005-2013
Main Authors: Awang, Nik Azimatolakma, Aziz, Hamidi Abdul, Bashir, Mohammed J.K., Umar, Muhammad
Format: Article
Language:English
Subjects:
Alum
Applied sciences
Biodegradability
Coagulation
Coagulation and flocculation
Dosage
Exact sciences and technology
Flocculating
Hibiscus rosa-sinensis
Landfills
Leachate treatment
Leaves
Other wastewaters
Pollution
Wastewaters
Water treatment and pollution
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Summary:Hibiscus rosa-sinensis is a biodegradable material that has not yet been tested for its flocculating properties. The objective of this study was to examine the efficiency of coagulation–flocculation processes for the removal of suspended solids (SS) from landfill leachate using aluminium sulphate (alum) and Hibiscus rosa-sinensis leaves extract at different pH and dosages. The experiments confirmed the positive coagulation properties of the investigated natural coagulant. The extracts from Hibiscus rosa-sinensis leaves had an isoelectric point at pH 4 and acted as a bridging mechanism in removing 74% of SS (8,000 mg/L dosage at pH 6) which was comparable with 78% SS removal using 7,000 mg/L alum (at pH 6).
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2012.735813