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Characterisation and optimisation of M. oleifera for the removal of humic substances from peat water

The application of peat water may be able to address the problem of water scarcity. This study used Moringa oleifera seed as a coagulant via jar tests in a series of coagulation-flocculation processes to remove humic substances (HS) from peat water. Characterisations were performed on the coagulant...

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Main Authors: U. Z., Seterik, Devagi, Kanakaraju, Sim, Siong Fong, Lesley, Maurice Bilung
Format: Article
Language:English
Published: Springer 2023
Subjects:
QD Chemistry
Online Access:http://ir.unimas.my/id/eprint/41962/1/IJEST%202023%20Kanakaraju%20UNIMAS%20IR.pdf
http://ir.unimas.my/id/eprint/41962/
https://link.springer.com/article/10.1007/s13762-023-04978-7
https://doi.org/10.1007/s13762-023-04978-7
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spelling my.unimas.ir.419622023-06-08T02:43:56Z http://ir.unimas.my/id/eprint/41962/ Characterisation and optimisation of M. oleifera for the removal of humic substances from peat water U. Z., Seterik Devagi, Kanakaraju Sim, Siong Fong Lesley, Maurice Bilung QD Chemistry The application of peat water may be able to address the problem of water scarcity. This study used Moringa oleifera seed as a coagulant via jar tests in a series of coagulation-flocculation processes to remove humic substances (HS) from peat water. Characterisations were performed on the coagulant and peat water. GC–MS analysis showed that oleic acid and octadecanoic acid are two of the main parts of the seeds that help in the coagulation process. FTIR analysis revealed that the coagulant consists of hydroxyl, carboxyl, and amino groups that can be ionised. To attain the maximum HS removal of peat water, three parameters, namely coagulant dosage, pH value, and contact time, were varied and optimised by response surface methodology (RSM) via Box-Behnken Design. The quadratic model predicted that the ideal condition of 1.94 g/L of coagulant, pH 7.6, and a contact time of 86 min would result in 91.1% of HS removal, which was comparable with the experimental value of 88.4% removal. Antimicrobial study was performed using ethanolic and hexanic extracts of moringa powder. The largest inhibition zone was demonstrated by the ethanolic extracts against S. aureus (18.33 ± 0.58 mm), while the weakest activity was observed in hexanic extract against E. coli at 5.00 mm. This proves that the coagulants possess antibacterial properties against both types of microbes. By using a modified jar test, this study sheds new light on the possibility of using peat water as a source of water and M. oleifera as a possible natural coagulant. Springer 2023-05-30 Article PeerReviewed text en http://ir.unimas.my/id/eprint/41962/1/IJEST%202023%20Kanakaraju%20UNIMAS%20IR.pdf U. Z., Seterik and Devagi, Kanakaraju and Sim, Siong Fong and Lesley, Maurice Bilung (2023) Characterisation and optimisation of M. oleifera for the removal of humic substances from peat water. International Journal of Environmental Science and Technology. pp. 1-20. ISSN 1735-2630 https://link.springer.com/article/10.1007/s13762-023-04978-7 https://doi.org/10.1007/s13762-023-04978-7
institution Universiti Malaysia Sarawak
building Centre for Academic Information Services (CAIS)
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sarawak
content_source UNIMAS Institutional Repository
url_provider http://ir.unimas.my/
language English
topic QD Chemistry
spellingShingle QD Chemistry
U. Z., Seterik
Devagi, Kanakaraju
Sim, Siong Fong
Lesley, Maurice Bilung
Characterisation and optimisation of M. oleifera for the removal of humic substances from peat water
description The application of peat water may be able to address the problem of water scarcity. This study used Moringa oleifera seed as a coagulant via jar tests in a series of coagulation-flocculation processes to remove humic substances (HS) from peat water. Characterisations were performed on the coagulant and peat water. GC–MS analysis showed that oleic acid and octadecanoic acid are two of the main parts of the seeds that help in the coagulation process. FTIR analysis revealed that the coagulant consists of hydroxyl, carboxyl, and amino groups that can be ionised. To attain the maximum HS removal of peat water, three parameters, namely coagulant dosage, pH value, and contact time, were varied and optimised by response surface methodology (RSM) via Box-Behnken Design. The quadratic model predicted that the ideal condition of 1.94 g/L of coagulant, pH 7.6, and a contact time of 86 min would result in 91.1% of HS removal, which was comparable with the experimental value of 88.4% removal. Antimicrobial study was performed using ethanolic and hexanic extracts of moringa powder. The largest inhibition zone was demonstrated by the ethanolic extracts against S. aureus (18.33 ± 0.58 mm), while the weakest activity was observed in hexanic extract against E. coli at 5.00 mm. This proves that the coagulants possess antibacterial properties against both types of microbes. By using a modified jar test, this study sheds new light on the possibility of using peat water as a source of water and M. oleifera as a possible natural coagulant.
format Article
author U. Z., Seterik
Devagi, Kanakaraju
Sim, Siong Fong
Lesley, Maurice Bilung
author_facet U. Z., Seterik
Devagi, Kanakaraju
Sim, Siong Fong
Lesley, Maurice Bilung
author_sort U. Z., Seterik
title Characterisation and optimisation of M. oleifera for the removal of humic substances from peat water
title_short Characterisation and optimisation of M. oleifera for the removal of humic substances from peat water
title_full Characterisation and optimisation of M. oleifera for the removal of humic substances from peat water
title_fullStr Characterisation and optimisation of M. oleifera for the removal of humic substances from peat water
title_full_unstemmed Characterisation and optimisation of M. oleifera for the removal of humic substances from peat water
title_sort characterisation and optimisation of m. oleifera for the removal of humic substances from peat water
publisher Springer
publishDate 2023
url http://ir.unimas.my/id/eprint/41962/1/IJEST%202023%20Kanakaraju%20UNIMAS%20IR.pdf
http://ir.unimas.my/id/eprint/41962/
https://link.springer.com/article/10.1007/s13762-023-04978-7
https://doi.org/10.1007/s13762-023-04978-7
_version_ 1769847687076642816
score 13.211869

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