Sludge performance in coagulation-flocculation treatment for suspended solids removal from landfill leachate using Tin (IV) chloride and Jatropha curcas

This study investigates the effectiveness of sludge in coagulation-flocculation treatment for suspended solids (SS) removal from landfill leachate using Tin (IV) chloride and Jatropha curcas seed (JC). The properties were examined in terms of the sludge volume index, sludge setting velocity, and flo...

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Bibliographic Details
Published in:International journal of environmental analytical chemistry 2023-12, Vol.103 (16), p.4716-4730
Main Authors: Zainal, Sharifah Farah Fariza Syed, Abdul Aziz, Hamidi, Mohd Omar, Fatehah, Alazaiza, Motasem Y.D.
Format: Article
Language:English
Subjects:
Chlorides
Clumps
coagulant-flocculation
Coagulation
Flocculants
Flocculation
Jatropha curcas
Jatropha curcas seeds
Landfill
Landfills
Leachates
Removal
Settling rate
Settling velocity
Sludge
Sludge volume index
Solid suspensions
solid waste
stabilised landfill leachate
Stannic chloride
Suspended particulate matter
Suspended solids
TIN (IV) chloride
Velocity
Waste disposal sites
Wastewater treatment
Water pollution treatment
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Summary:This study investigates the effectiveness of sludge in coagulation-flocculation treatment for suspended solids (SS) removal from landfill leachate using Tin (IV) chloride and Jatropha curcas seed (JC). The properties were examined in terms of the sludge volume index, sludge setting velocity, and floc sizes. Leachate samples were collected from the Alor Pongsu Landfill Site (APLS) located in Bagan Serai, Malaysia. Results showed that almost a complete reduction of SS was obtained at 8.5 g/L of SnCl 4 with the aid of 0.9 g/L of JC seed as flocculant. At this optimum condition, the sludge volume index (SVI) and the settling velocity were 56.53 and 0.78 cm/s, respectively, which are better than the sludge without a flocculant. It can be concluded that the presence of JC improved the sludge property with good morphology; the particles were in a rectangular shape and clumps are strongly agglomerated. These properties of sludge are expected to be effectively dewatered. The results proved that JC seed could help in enhancing the adsorption and bridging mechanism in the coagulation-flocculation procedure. Overall, this study confirmed that the utilisation of sludge in coagulation-flocculation treatment for stabilised landfill leachate using SnCl 4 and Jatropha curcas could be a powerful option for landfill leachate treatment.
ISSN:0306-7319
1029-0397
DOI:10.1080/03067319.2021.1931161