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Dr Sharif Zein

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Sharif Zein

Director of Postgraduate Research, Chemical Engineering Department


Single-Step extraction-esterification process to produce Biodiesel from Palm Oil Mill Effluent (POME) using microwave heating: a circular economy approach to making use of a difficult waste product. (2020)
Journal Article
Davies, E., Deutz, P., & Zein, S. H. (in press). Single-Step extraction-esterification process to produce Biodiesel from Palm Oil Mill Effluent (POME) using microwave heating: a circular economy approach to making use of a difficult waste product. Biomass Conversion and Biorefinery, https://doi.org/10.1007/s13399-020-00856-1

This investigation explores single step biodiesel synthesis using Palm Oil Mill Effluent (POME) as a feedstock. Normally considered a waste product from the extraction process of palm oil, POME treatment is difficult and can cause significant environ... Read More about Single-Step extraction-esterification process to produce Biodiesel from Palm Oil Mill Effluent (POME) using microwave heating: a circular economy approach to making use of a difficult waste product..

Optimization of pH as a strategy to improve enzymatic saccharification of wheat straw for enhancing bioethanol production (2020)
Journal Article
Abdulsattar, M. O., Abdulsattar, J. O., Greenway, G. M., Welham, K. J., Abdulsattar, M., Abdulsattar, J., …Zein, S. H. (2020). Optimization of pH as a strategy to improve enzymatic saccharification of wheat straw for enhancing bioethanol production. Journal of Analytical Science and Technology, 11(1), https://doi.org/10.1186/s40543-020-00217-7

In this work, wheat straw (WS) was used as a lignocellulosic substrate to investigate the influence of pH on enzymatic saccharification. The optimum enzymatic hydrolysis occurred at pH range 5.8 – 6.0, instead of 4.8 - 5.0 as has been widely reported... Read More about Optimization of pH as a strategy to improve enzymatic saccharification of wheat straw for enhancing bioethanol production.

An innovative method of extraction of coffee oil using an advanced microwave system: in comparison with conventional Soxhlet extraction method (2019)
Journal Article
Hibbert, S., Welham, K., & Zein, S. (2019). An innovative method of extraction of coffee oil using an advanced microwave system: in comparison with conventional Soxhlet extraction method. SN applied sciences, 1(11), https://doi.org/10.1007/s42452-019-1457-5

The production of energy and chemicals from waste biomass is an attractive alternative by comparison with first generation biofuels and fossil feedstocks. This paper investigates oil extraction from spent coffee grounds (SCG) by means of an advanced... Read More about An innovative method of extraction of coffee oil using an advanced microwave system: in comparison with conventional Soxhlet extraction method.

Rheological evaluation of the fabrication parameters of cellulose acetate butyrate membrane on CO2/N2 separation performance (2019)
Book Chapter
Lee, R., Jawad, Z., Ahmad, A., Chua, H., Ngang, H., & Zein, S. (2019). Rheological evaluation of the fabrication parameters of cellulose acetate butyrate membrane on CO2/N2 separation performance. In Z. A. Jawad (Ed.), Membrane Technology for CO2 Sequestration and Separation, 202-225. (1). Taylor & Francis

The rise in emission of greenhouse gases (GHGs) mainly carbon dioxide (CO2) in recent years due to rapid development of modern civilisation, has been listed as the primary contributor to global warming. To address this global issue, membrane technolo... Read More about Rheological evaluation of the fabrication parameters of cellulose acetate butyrate membrane on CO2/N2 separation performance.

Wheat straw bio-refining. Part II: Optimization of the microwave radiation with sulphuric acid pre-treatment and its enzymatic hydrolysis for fermentable sugars (2017)
Journal Article
Festus, O., Skoulou, V. K., & Zein, S. H. (2017). Wheat straw bio-refining. Part II: Optimization of the microwave radiation with sulphuric acid pre-treatment and its enzymatic hydrolysis for fermentable sugars. Current Microwave Chemistry, 4(4), 306-316. https://doi.org/10.2174/2213335604666171103123459

Background: The potential of microwave-assisted heating for enhancing the alkaline pretreatment of lignocellulosic waste is highlighted in this work. Objective: To maximize separation of fermentable sugars from wheat straw. Methods: Wheat straw... Read More about Wheat straw bio-refining. Part II: Optimization of the microwave radiation with sulphuric acid pre-treatment and its enzymatic hydrolysis for fermentable sugars.

Wheat Straw Bio-refining. Part I: Optimization of the Microwave Radiation Process with Sulphuric Acid Pre-treatment (2017)
Journal Article
Demirhan, H., Fauzi, A., Skoulou, V. . K., Haywood, S. . . H., & Zein, S. . . H. (2017). Wheat Straw Bio-refining. Part I: Optimization of the Microwave Radiation Process with Sulphuric Acid Pre-treatment. Current Microwave Chemistry, 4(3), https://doi.org/10.2174/2213335604666170719113659

Background: This study investigates the microwave-assisted acid extraction of lignin from wheat straw. Methods: Two experimental design methods, the Central Composite Design (CCD) and the Response Surface Method (RSM) methods were used to select c... Read More about Wheat Straw Bio-refining. Part I: Optimization of the Microwave Radiation Process with Sulphuric Acid Pre-treatment.

Characterization of rice husk-based catalyst prepared via conventional and microwave carbonisation (2017)
Journal Article
Touhami, D., Zhu, Z., Balan, W. S., Janaun, J., Haywood, S., & Zein, S. (2017). Characterization of rice husk-based catalyst prepared via conventional and microwave carbonisation. Journal of Environmental Chemical Engineering, 5(3), 2388-2394. https://doi.org/10.1016/j.jece.2017.04.020

© 2017 Elsevier Ltd. Carbon-based sulphonated catalysts (CBSCs) were made from rice husk for biodiesel production. The CBSCs were prepared by microwave (MW) and conventional heating processes from the same feedstock. In both heating systems, the prep... Read More about Characterization of rice husk-based catalyst prepared via conventional and microwave carbonisation.

Nanocarbons from acid pretreated waste coffee grounds using microwave radiation (2017)
Journal Article
Zein, S. H., Gyamera, B. A., & Skoulou, V. K. (2017). Nanocarbons from acid pretreated waste coffee grounds using microwave radiation. Materials letters, 193, 46-49. https://doi.org/10.1016/j.matlet.2017.01.100

This study investigates the use of microwave radiation to produce nanocarbons from Waste Coffee Grounds (WCG). It is first step to demonstrate the potential of integrating the microwave power to conventional methods of carbonaceous materials and nano... Read More about Nanocarbons from acid pretreated waste coffee grounds using microwave radiation.

Investigation of the chemocatalytic and biocatalytic valorization of a range of different lignin preparations: The importance of β-O-4 content (2016)
Journal Article
Lancefield, C. S., Rashid, G. M. M., Bouxin, F., Wasak, A., Tu, W., Hallett, J., …Bugg, T. D. H. (2016). Investigation of the chemocatalytic and biocatalytic valorization of a range of different lignin preparations: The importance of β-O-4 content. ACS Sustainable Chemistry and Engineering, 4(12), 6921-6930. https://doi.org/10.1021/acssuschemeng.6b01855

A set of seven different lignin preparations was generated from a range of organosolv (acidic, alkaline, ammonia-treated, and dioxane-based), ionic liquid, autohydrolysis, and Kraft pretreatments of lignocelluloses. Each lignin was characterized by 2... Read More about Investigation of the chemocatalytic and biocatalytic valorization of a range of different lignin preparations: The importance of β-O-4 content.

Effect of ions in ionic liquids on the characteristics of cellulose from coconut husk fibres (2016)
Journal Article
Reh, N. A., Zakaria, R., & Zein, S. H. (2016). Effect of ions in ionic liquids on the characteristics of cellulose from coconut husk fibres. International journal of biomedical engineering and technology, 21(1), 80-94. https://doi.org/10.1504/IJBET.2016.076734

This paper reports the properties of cellulose nanowhiskers as new potential biomaterials. Cellulose nanowhiskers were produced from coconut husk fibres using four different anions of ionic liquids: 1-butyl-3-mehtylimidzalium chloride, 1-butyl-3-meht... Read More about Effect of ions in ionic liquids on the characteristics of cellulose from coconut husk fibres.

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