Kinetic model derived from machine learning for accurate prediction of microalgal hydrogen production via conversion from low thermally pre-treated palm kernel expeller waste

The depletion of fossil fuel sources and increase in energy demands have increased the need for a sustainable alternative energy source. The ability to produce hydrogen from microalgae is generating a lot of attention in both academia and industry. Due to complex production procedures, the commercia...

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Main Authors: Ahmad Sobri, M.Z., Khoo, K.S., Sahrin, N.T., Ardo, F.M., Ansar, S., Hossain, M.S., Kiatkittipong, W., Lin, C., Ng, H.-S., Zaini, J., Bilad, M.R., Lam, M.K., Lim, J.W.
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Published: Elsevier Ltd 2023
Online Access:http://scholars.utp.edu.my/id/eprint/37330/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85165983478&doi=10.1016%2fj.chemosphere.2023.139526&partnerID=40&md5=2c0dc6ca4fc905ff744d7288d3294f38
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spelling oai:scholars.utp.edu.my:373302023-10-04T08:41:37Z http://scholars.utp.edu.my/id/eprint/37330/ Kinetic model derived from machine learning for accurate prediction of microalgal hydrogen production via conversion from low thermally pre-treated palm kernel expeller waste Ahmad Sobri, M.Z. Khoo, K.S. Sahrin, N.T. Ardo, F.M. Ansar, S. Hossain, M.S. Kiatkittipong, W. Lin, C. Ng, H.-S. Zaini, J. Bilad, M.R. Lam, M.K. Lim, J.W. The depletion of fossil fuel sources and increase in energy demands have increased the need for a sustainable alternative energy source. The ability to produce hydrogen from microalgae is generating a lot of attention in both academia and industry. Due to complex production procedures, the commercial production of microalgal biohydrogen is not yet practical. Developing the most optimum microalgal hydrogen production process is also very laborious and expensive as proven from the experimental measurement. Therefore, this research project intended to analyse the random time series dataset collected during microalgal hydrogen productions while using various low thermally pre-treated palm kernel expeller (PKE) waste via machine learning (ML) approach. The analysis of collected dataset allowed the derivation of an enhanced kinetic model based on the Gompertz model amidst the dark fermentative hydrogen production that integrated thermal pre-treatment duration as a function within the model. The optimum microalgal hydrogen production attained with the enhanced kinetic model was 387.1 mL/g microalgae after 6 days with 1 h thermally pre-treated PKE waste at 90 °C. The enhanced model also had better accuracy (R2 = 0.9556) and net energy ratio (NER) value (0.71) than previous studies. Finally, the NER could be further improved to 0.91 when the microalgal culture was reused, heralding the potential application of ML in optimizing the microalgal hydrogen production process. © 2023 Elsevier Ltd Elsevier Ltd 2023 Article NonPeerReviewed Ahmad Sobri, M.Z. and Khoo, K.S. and Sahrin, N.T. and Ardo, F.M. and Ansar, S. and Hossain, M.S. and Kiatkittipong, W. and Lin, C. and Ng, H.-S. and Zaini, J. and Bilad, M.R. and Lam, M.K. and Lim, J.W. (2023) Kinetic model derived from machine learning for accurate prediction of microalgal hydrogen production via conversion from low thermally pre-treated palm kernel expeller waste. Chemosphere, 338. ISSN 00456535 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85165983478&doi=10.1016%2fj.chemosphere.2023.139526&partnerID=40&md5=2c0dc6ca4fc905ff744d7288d3294f38 10.1016/j.chemosphere.2023.139526 10.1016/j.chemosphere.2023.139526 10.1016/j.chemosphere.2023.139526
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description The depletion of fossil fuel sources and increase in energy demands have increased the need for a sustainable alternative energy source. The ability to produce hydrogen from microalgae is generating a lot of attention in both academia and industry. Due to complex production procedures, the commercial production of microalgal biohydrogen is not yet practical. Developing the most optimum microalgal hydrogen production process is also very laborious and expensive as proven from the experimental measurement. Therefore, this research project intended to analyse the random time series dataset collected during microalgal hydrogen productions while using various low thermally pre-treated palm kernel expeller (PKE) waste via machine learning (ML) approach. The analysis of collected dataset allowed the derivation of an enhanced kinetic model based on the Gompertz model amidst the dark fermentative hydrogen production that integrated thermal pre-treatment duration as a function within the model. The optimum microalgal hydrogen production attained with the enhanced kinetic model was 387.1 mL/g microalgae after 6 days with 1 h thermally pre-treated PKE waste at 90 °C. The enhanced model also had better accuracy (R2 = 0.9556) and net energy ratio (NER) value (0.71) than previous studies. Finally, the NER could be further improved to 0.91 when the microalgal culture was reused, heralding the potential application of ML in optimizing the microalgal hydrogen production process. © 2023 Elsevier Ltd
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author Ahmad Sobri, M.Z.
Khoo, K.S.
Sahrin, N.T.
Ardo, F.M.
Ansar, S.
Hossain, M.S.
Kiatkittipong, W.
Lin, C.
Ng, H.-S.
Zaini, J.
Bilad, M.R.
Lam, M.K.
Lim, J.W.
spellingShingle Ahmad Sobri, M.Z.
Khoo, K.S.
Sahrin, N.T.
Ardo, F.M.
Ansar, S.
Hossain, M.S.
Kiatkittipong, W.
Lin, C.
Ng, H.-S.
Zaini, J.
Bilad, M.R.
Lam, M.K.
Lim, J.W.
Kinetic model derived from machine learning for accurate prediction of microalgal hydrogen production via conversion from low thermally pre-treated palm kernel expeller waste
author_facet Ahmad Sobri, M.Z.
Khoo, K.S.
Sahrin, N.T.
Ardo, F.M.
Ansar, S.
Hossain, M.S.
Kiatkittipong, W.
Lin, C.
Ng, H.-S.
Zaini, J.
Bilad, M.R.
Lam, M.K.
Lim, J.W.
author_sort Ahmad Sobri, M.Z.
title Kinetic model derived from machine learning for accurate prediction of microalgal hydrogen production via conversion from low thermally pre-treated palm kernel expeller waste
title_short Kinetic model derived from machine learning for accurate prediction of microalgal hydrogen production via conversion from low thermally pre-treated palm kernel expeller waste
title_full Kinetic model derived from machine learning for accurate prediction of microalgal hydrogen production via conversion from low thermally pre-treated palm kernel expeller waste
title_fullStr Kinetic model derived from machine learning for accurate prediction of microalgal hydrogen production via conversion from low thermally pre-treated palm kernel expeller waste
title_full_unstemmed Kinetic model derived from machine learning for accurate prediction of microalgal hydrogen production via conversion from low thermally pre-treated palm kernel expeller waste
title_sort kinetic model derived from machine learning for accurate prediction of microalgal hydrogen production via conversion from low thermally pre-treated palm kernel expeller waste
publisher Elsevier Ltd
publishDate 2023
url http://scholars.utp.edu.my/id/eprint/37330/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85165983478&doi=10.1016%2fj.chemosphere.2023.139526&partnerID=40&md5=2c0dc6ca4fc905ff744d7288d3294f38
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