Staff View: Remediation and recovery of Kariba weed as emerging contaminant in freshwater and shellfish aquaculture system via solvothermal liquefaction

Remediation and recovery of Kariba weed as emerging contaminant in freshwater and shellfish aquaculture system via solvothermal liquefaction

Fast growing Kariba weed causes major problems and pollution on freshwater and shellfish aquaculture systems by interfering with nutrient uptake of crops, restricting sunlight penetration, and decreasing water quality due to massive biomass of Kariba weed remnants. Solvothermal liquefaction is consi...

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Main Authors:	Azwar, Elfina, Wan Mahari, Wan Adibah, Liew, Rock Keey, Ramlee, Muhammad Zulhilmi, Verma, Meenakshi, Chong, William Woei Fong, Peng, Wanxi, Ng, Hui Suan, Mu. Naushad, Mu. Naushad, Sonne, Christian, Lam, Su Shiung
Format:	Article
Published:	Elsevier B.V. 2023
Subjects:	Q Science (General) TJ Mechanical engineering and machinery TP Chemical technology
Online Access:	http://eprints.utm.my/106789/ http://dx.doi.org/10.1016/j.scitotenv.2023.162673
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spelling	my.utm.1067892024-07-30T07:59:09Z http://eprints.utm.my/106789/ Remediation and recovery of Kariba weed as emerging contaminant in freshwater and shellfish aquaculture system via solvothermal liquefaction Azwar, Elfina Wan Mahari, Wan Adibah Liew, Rock Keey Ramlee, Muhammad Zulhilmi Verma, Meenakshi Chong, William Woei Fong Peng, Wanxi Ng, Hui Suan Mu. Naushad, Mu. Naushad Sonne, Christian Lam, Su Shiung Q Science (General) TJ Mechanical engineering and machinery TP Chemical technology Fast growing Kariba weed causes major problems and pollution on freshwater and shellfish aquaculture systems by interfering with nutrient uptake of crops, restricting sunlight penetration, and decreasing water quality due to massive biomass of Kariba weed remnants. Solvothermal liquefaction is considered an emerging thermochemical technique to convert waste into high yield of value-added products. Solvothermal liquefaction (STL) of Kariba weed as an emerging contaminant was performed to investigate the effects of different types of solvents (ethanol and methanol) and Kariba weed mass loadings (2.5–10 % w/v) on treating and reducing the weed via conversion into potentially useful crude oil product and char. Up to 92.53 % of Kariba weed has been reduced via this technique. The optimal conditions for crude oil production were found to be at 5 % w/v of mass loading in methanol medium, resulting in a high heating value (HHV) of 34.66 MJ/kg and yield of 20.86 wt%, whereas the biochar production was found to be optimum at 7.5 % w/v of mass loading in methanol medium, resulting in 29.92 MJ/kg of HHV and 25.38 wt% of yield. The crude oil consisted of beneficial chemical compounds for biofuel production such as hexadecanoic acid, methyl ester (65.02 peak area %) and the biochar showed high carbon content (72.83 %). In conclusion, STL as a remediation for emerging Kariba weed is a feasible process for shellfish aquaculture waste treatment and biofuels production. Elsevier B.V. 2023-06-10 Article PeerReviewed Azwar, Elfina and Wan Mahari, Wan Adibah and Liew, Rock Keey and Ramlee, Muhammad Zulhilmi and Verma, Meenakshi and Chong, William Woei Fong and Peng, Wanxi and Ng, Hui Suan and Mu. Naushad, Mu. Naushad and Sonne, Christian and Lam, Su Shiung (2023) Remediation and recovery of Kariba weed as emerging contaminant in freshwater and shellfish aquaculture system via solvothermal liquefaction. Science of the Total Environment, 876 (NA). NA. ISSN 0048-9697 http://dx.doi.org/10.1016/j.scitotenv.2023.162673 DOI:10.1016/j.scitotenv.2023.162673
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	Q Science (General) TJ Mechanical engineering and machinery TP Chemical technology
spellingShingle	Q Science (General) TJ Mechanical engineering and machinery TP Chemical technology Azwar, Elfina Wan Mahari, Wan Adibah Liew, Rock Keey Ramlee, Muhammad Zulhilmi Verma, Meenakshi Chong, William Woei Fong Peng, Wanxi Ng, Hui Suan Mu. Naushad, Mu. Naushad Sonne, Christian Lam, Su Shiung Remediation and recovery of Kariba weed as emerging contaminant in freshwater and shellfish aquaculture system via solvothermal liquefaction
description	Fast growing Kariba weed causes major problems and pollution on freshwater and shellfish aquaculture systems by interfering with nutrient uptake of crops, restricting sunlight penetration, and decreasing water quality due to massive biomass of Kariba weed remnants. Solvothermal liquefaction is considered an emerging thermochemical technique to convert waste into high yield of value-added products. Solvothermal liquefaction (STL) of Kariba weed as an emerging contaminant was performed to investigate the effects of different types of solvents (ethanol and methanol) and Kariba weed mass loadings (2.5–10 % w/v) on treating and reducing the weed via conversion into potentially useful crude oil product and char. Up to 92.53 % of Kariba weed has been reduced via this technique. The optimal conditions for crude oil production were found to be at 5 % w/v of mass loading in methanol medium, resulting in a high heating value (HHV) of 34.66 MJ/kg and yield of 20.86 wt%, whereas the biochar production was found to be optimum at 7.5 % w/v of mass loading in methanol medium, resulting in 29.92 MJ/kg of HHV and 25.38 wt% of yield. The crude oil consisted of beneficial chemical compounds for biofuel production such as hexadecanoic acid, methyl ester (65.02 peak area %) and the biochar showed high carbon content (72.83 %). In conclusion, STL as a remediation for emerging Kariba weed is a feasible process for shellfish aquaculture waste treatment and biofuels production.
format	Article
author	Azwar, Elfina Wan Mahari, Wan Adibah Liew, Rock Keey Ramlee, Muhammad Zulhilmi Verma, Meenakshi Chong, William Woei Fong Peng, Wanxi Ng, Hui Suan Mu. Naushad, Mu. Naushad Sonne, Christian Lam, Su Shiung
author_facet	Azwar, Elfina Wan Mahari, Wan Adibah Liew, Rock Keey Ramlee, Muhammad Zulhilmi Verma, Meenakshi Chong, William Woei Fong Peng, Wanxi Ng, Hui Suan Mu. Naushad, Mu. Naushad Sonne, Christian Lam, Su Shiung
author_sort	Azwar, Elfina
title	Remediation and recovery of Kariba weed as emerging contaminant in freshwater and shellfish aquaculture system via solvothermal liquefaction
title_short	Remediation and recovery of Kariba weed as emerging contaminant in freshwater and shellfish aquaculture system via solvothermal liquefaction
title_full	Remediation and recovery of Kariba weed as emerging contaminant in freshwater and shellfish aquaculture system via solvothermal liquefaction
title_fullStr	Remediation and recovery of Kariba weed as emerging contaminant in freshwater and shellfish aquaculture system via solvothermal liquefaction
title_full_unstemmed	Remediation and recovery of Kariba weed as emerging contaminant in freshwater and shellfish aquaculture system via solvothermal liquefaction
title_sort	remediation and recovery of kariba weed as emerging contaminant in freshwater and shellfish aquaculture system via solvothermal liquefaction
publisher	Elsevier B.V.
publishDate	2023
url	http://eprints.utm.my/106789/ http://dx.doi.org/10.1016/j.scitotenv.2023.162673
_version_	1806442410523230208
score	13.211869

Remediation and recovery of Kariba weed as emerging contaminant in freshwater and shellfish aquaculture system via solvothermal liquefaction

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