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Coagulation-flocculation process for turbidity removal using alum sludge from water treatment plant

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cris.virtual.department Universiti Malaysia Perlis
cris.virtual.department Universiti Malaysia Perlis
cris.virtual.department Universiti Malaysia Perlis
cris.virtual.department Universiti Malaysia Perlis
cris.virtualsource.department e3907fdd-adf0-4d55-81e6-c72962707e7b
cris.virtualsource.department 4dd8dd64-3ecb-49ca-a555-cc48eb79f712
cris.virtualsource.department 23abfa1e-66d4-4e62-9131-e2619556fcae
cris.virtualsource.department 06a79b09-7f61-44dd-a24d-1d77155648c4
dc.contributor.author J. H. Chan
dc.contributor.author Nor Aida Yusoff
dc.contributor.author Noor Ainee Zainol
dc.contributor.author Nor Munirah Rohaizad
dc.contributor.author Khairunissa Syairah Ahmad Sohaimi
dc.date.accessioned 2025-07-16T04:02:13Z
dc.date.available 2025-07-16T04:02:13Z
dc.date.issued 2023
dc.description.abstract The aim of this research was to utilize alum sludge, also known as water treatment residual (WTR) from water treatment plant for preparing sludge reagent product (SRP) as coagulant in removing turbidity of kaolin suspension and river water. The WTR was characterized by examine the inorganic component (functional group, and surface morphology using X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscope (SEM) respectively. WTR had an amorphous structure and contained high aluminum metal constituents with 35.4 %, which can be recovered as coagulant. Acidification was conducted to recover these aluminium in WTR by using sulphuric acid and produced SRP. The optimum condition of SRP prepared from WTR was evaluated through parameters such as sludge concentration, normality and dosage of acid. It has been observed that 1 % sludge concentration acidified with 0.08 ml/ml sludge and 2.0 N H2SO4 of SRP gave the maximum percentage turbidity removal of 99.46 %. The performance of SRP in coagulation-flocculation process by using a standard jar test was studied based on the effect of pH, kaolin concentration, and SRP dosage. The highest percentage turbidity removal (99.79 %) was obtained at pH 7, kaolin concentration of 800 mg/L, and SRP dosage of 80 mg/L. The SRP performance was also compared to alum coagulant. The percentage turbidity removal of river water for both coagulants were almost similar, with 90.60 % for SRP and 91.18 % for alum respectively. Thus, SRP has the potential to replace commercial coagulant in water treatment plant in terms of costing and sustainability.
dc.identifier.doi 10.1063/5.0117042
dc.identifier.uri https://pubs.aip.org/aip/acp/article-abstract/2703/1/070001/2895550/Coagulation-flocculation-process-for-turbidity?redirectedFrom=fulltext
dc.identifier.uri https://pubs.aip.org/aip
dc.identifier.uri https://hdl.handle.net/20.500.14170/14106
dc.language.iso en
dc.publisher AIP Publishing
dc.relation.ispartof AIP Conference Proceedings
dc.relation.ispartofseries The Proceeding of the 1st International Conference of Chemical Science, Engineering and Technology (iC-CSET)
dc.relation.issn 0094-243X
dc.subject Alum
dc.subject Sludge
dc.subject Water treatment residual (WTR)
dc.title Coagulation-flocculation process for turbidity removal using alum sludge from water treatment plant
dc.type proceedings-article
dspace.entity.type Publication
oaire.citation.issue 1
oaire.citation.volume 2703
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
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