Chee, A.L.K. and Chin, B.L.F. and Sulaiman, S.A. and Chai, Y.H. and Saptoro, A. and Umar, H.A. and Lock, S.S.M. and Yiin, C.L. (2024) Syngas-Enriched hydrogen production via catalytic gasification of water hyacinth using renewable palm kernel shell hydrochar. Fuel, 362.

Abdul Rahman, S.N.S. and Chai, Y.H. and Lam, M.K. (2024) Taguchi approach for assessing supercritical CO2 (sCO2) fluid extraction of polyhydroxyalkanoate (PHA) from Chlorella Vulgaris sp. microalgae. Journal of Environmental Management, 355.

Oza, S. and Kodgire, P. and Kachhwaha, S.S. and Lam, M.K. and Yusup, S. and Chai, Y.H. and Rokhum, S.L. (2024) A review on sustainable and scalable biodiesel production using ultra-sonication technology. Renewable Energy, 226.

Leong, W.H. and Rawindran, H. and Ameen, F. and Alam, M.M. and Chai, Y.H. and Ho, Y.C. and Lam, M.K. and Lim, J.W. and Tong, W.-Y. and Bashir, M.J.K. and Ravindran, B. and Alsufi, N.A. (2023) Advancements of microalgal upstream technologies: Bioengineering and application aspects in the paradigm of circular bioeconomy. Chemosphere, 339.

Azmi, N. and Ameen, M. and Yashni, G. and Yusup, S. and Yusoff, M.H.M. and Chai, Y.H. (2023) In Situ Catalytic Conversion of Glycerol to Triacetin under Microwave Irradiation with Commercial Palladium on Activated Carbon Catalyst. Journal of Sustainable Development of Energy, Water and Environment Systems, 11 (4).

Lim, M.T. and Tan, E.S. and Chai, Y.H. and Chin, B.L.F. and Juwono, F.H. and Hisham, D.H.B. and Mohamed Anuar, M.A. (2023) Pilot-scale flue gas pyrolysis system for organic and plastic wastes with improved liquid properties in a non-thermal plasma reactor. Journal of Analytical and Applied Pyrolysis, 173.

Soh, M. and Phang, F.J.F. and Chai, Y.H. and Chew, J.J. and Loh, S.K. and Yusup, S. and Yu, A. and Sunarso, J. (2023) Reaction mechanisms of the wet torrefaction of oil palm trunks under the effect of initial pressurisation. Chemical Engineering Research and Design, 193. pp. 493-506.

Soh, M. and Mostapha, M. and Chai, Y.H. and Khaerudini, D.S. and Phang, F.J.F. and Chew, J.J. and Loh, S.K. and Yusup, S. and Sunarso, J. (2023) Role of levulinic acid in catalytic wet torrefaction of oil palm trunks: Insights into the hydrochar physicochemical properties, liquid phase composition, and reaction mechanisms. Process Safety and Environmental Protection, 172. pp. 1087-1098.

Chee, A.L.K. and Chin, B.L.F. and Goh, S.M.X. and Chai, Y.H. and Loy, A.C.M. and Cheah, K.W. and Yiin, C.L. and Lock, S.S.M. (2023) Thermo-catalytic co-pyrolysis of palm kernel shell and plastic waste mixtures using bifunctional HZSM-5/limestone catalyst: Kinetic and thermodynamic insights. Journal of the Energy Institute, 107.

Kanna Dasan, Y. and Lam, M.K. and Chai, Y.H. and Lim, J.W. and Ho, Y.C. and Tan, I.S. and Lau, S.Y. and Show, P.L. and Lee, K.T. (2023) Unlocking the potential of microalgae bio-factories for carbon dioxide mitigation: A comprehensive exploration of recent advances, key challenges, and energy-economic insights. Bioresource Technology, 380.

Chai, Y.H. and Mohamed, M. and Cheng, Y.W. and Chin, B.L.F. and Yiin, C.L. and Yusup, S. and Lam, M.K. (2023) A review on potential of biohydrogen generation through waste decomposition technologies. Biomass Conversion and Biorefinery, 13 (10). pp. 8549-8574.

Chai, Y.H. and Rashidi, N.A. and Mohamed, M. and Chin, B.L.F. and Yusup, S. (2022) Basic principles of CO2 capture and conversion technologies. Elsevier, pp. 25-61. ISBN 9780323898515; 9780323898881

Rashidi, N.A. and Chai, Y.H. and Yusup, S. (2022) Biomass Energy in Malaysia: Current Scenario, Policies, and Implementation Challenges. Bioenergy Research, 15 (3). pp. 1371-1386. ISSN 19391234

Rashidi, N.A. and Chai, Y.H. and Ismail, I.S. and Othman, M.F.H. and Yusup, S. (2022) Biomass as activated carbon precursor and potential in supercapacitor applications. Biomass Conversion and Biorefinery. ISSN 21906815

Lim, H.Y. and Tang, S.H. and Chai, Y.H. and Yusup, S. and Lim, M.T. (2022) Co-pyrolysis of plastics and food waste mixture under flue gas condition for bio-oil production. Sustainable Energy Technologies and Assessments, 54. ISSN 22131388

Rashidi, N.A. and Chai, Y.H. and Yusup, S. and Kathiravale, S. and Ismail, N.M.S. (2022) Gate-to-gate life cycle assessment of solid waste conversion of black aluminum dross to γ-alumina as catalyst support for biofuel production. World Scientific Publishing Co. Pte. Ltd., pp. 113-133. ISBN 9789811245800; 9789811245794

Tang, K.H.D. and Lock, S.S.M. and Yap, P.-S. and Cheah, K.W. and Chan, Y.H. and Yiin, C.L. and Ku, A.Z.E. and Loy, A.C.M. and Chin, B.L.F. and Chai, Y.H. (2022) Immobilized enzyme/microorganism complexes for degradation of microplastics: A review of recent advances, feasibility and future prospects. Science of the Total Environment, 832. ISSN 00489697

Yap, T.L. and Loy, A.C.M. and Chin, B.L.F. and Lim, J.Y. and Alhamzi, H. and Chai, Y.H. and Yiin, C.L. and Cheah, K.W. and Wee, M.X.J. and Lam, M.K. and Jawad, Z.A. and Yusup, S. and Lock, S.S.M. (2022) Synergistic effects of catalytic co-pyrolysis Chlorella vulgaris and polyethylene mixtures using artificial neuron network: Thermodynamic and empirical kinetic analyses. Journal of Environmental Chemical Engineering, 10 (3). ISSN 22133437

Suparmaniam, U. and Lam, M.K. and Lim, J.W. and Rawindran, H. and Chai, Y.H. and Tan, I.S. and Fui Chin, B.L. and Kiew, P.L. (2022) The potential of waste chicken feather protein hydrolysate as microalgae biostimulant using organic fertilizer as nutrients source. In: UNSPECIFIED.

Gurdeep Singh, H.K. and Yusup, S. and Quitain, A.T. and Abdullah, B. and Inayat, A. and Ameen, M. and Cheah, K.W. and Sasaki, M. and Kida, T. and Chai, Y.H. (2021) Five-lump kinetic approach on biofuel production from refined rubber seed oil over Cu/ZSM-5 catalyst via catalytic cracking reaction. Renewable Energy, 171. pp. 1445-1453. ISSN 09601481

Khoo, K.S. and Tan, X. and Ooi, C.W. and Chew, K.W. and Leong, W.H. and Chai, Y.H. and Ho, S.-H. and Show, P.L. (2021) How does ionic liquid play a role in sustainability of biomass processing? Journal of Cleaner Production, 284. ISSN 09596526

Chai, Y.H. and Yusup, S. and Seer, Q.H. and Ruslan, M.S.H. and Chin, B.L.F. (2021) Influence of supercritical CO2 flowrate in one-pot supercritical fluid extraction of Carica papaya linn. leaves: A broken-intact-cell approach. In: UNSPECIFIED.

Majid, M. and Chin, B.L.F. and Jawad, Z.A. and Chai, Y.H. and Lam, M.K. and Yusup, S. and Cheah, K.W. (2021) Particle swarm optimization and global sensitivity analysis for catalytic co-pyrolysis of Chlorella vulgaris and plastic waste mixtures. Bioresource Technology, 329. ISSN 09608524

Liew, J.X. and Loy, A.C.M. and Chin, B.L.F. and AlNouss, A. and Shahbaz, M. and Al-Ansari, T. and Govindan, R. and Chai, Y.H. (2021) Synergistic effects of catalytic co-pyrolysis of corn cob and HDPE waste mixtures using weight average global process model. Renewable Energy, 170. pp. 948-963. ISSN 09601481

Chai, Y.H. and Yusup, S. and Kadir, W.N.A. and Wong, C.Y. and Rosli, S.S. and Ruslan, M.S.H. and Chin, B.L.F. and Yiin, C.L. (2021) Valorization of tropical biomass waste by supercritical fluid extraction technology. Sustainability (Switzerland), 13 (1). pp. 1-24. ISSN 20711050

Bong, J.T. and Loy, A.C.M. and Chin, B.L.F. and Lam, M.K. and Tang, D.K.H. and Lim, H.Y. and Chai, Y.H. and Yusup, S. (2020) Artificial neural network approach for co-pyrolysis of Chlorella vulgaris and peanut shell binary mixtures using microalgae ash catalyst. Energy, 207. ISSN 03605442

Khoo, K.S. and Chew, K.W. and Yew, G.Y. and Leong, W.H. and Chai, Y.H. and Show, P.L. and Chen, W.-H. (2020) Recent advances in downstream processing of microalgae lipid recovery for biofuel production. Bioresource Technology, 304. ISSN 09608524

Chai, Y.H. and Yusup, S. and Ruslan, M.S.H. (2020) Review of bioactive compounds extracted from carica papaya linn. Current Nutrition and Food Science, 16 (9). pp. 1287-1298. ISSN 15734013

Chai, Y.H. and Yusup, S. and Ruslan, M.S.H. and Chin, B.L.F. (2020) Supercritical fluid extraction and solubilization of Carica papaya linn. leaves in ternary system with CO2 + ethanol solvents. Chemical Engineering Research and Design, 156. pp. 31-42. ISSN 02638762

Chan, Y.H. and Yusup, S. and Quitain, A.T. and Chai, Y.H. and Uemura, Y. and Loh, S.K. (2018) Extraction of palm kernel shell derived pyrolysis oil by supercritical carbon dioxide: Evaluation and modeling of phenol solubility. Biomass and Bioenergy, 116. pp. 106-112. ISSN 09619534

Chai, Y.H. and Yusup, S. and Chok, V.S. and Irawan, S. and Singh, J.D.B.S. and Chin, B.L.F. (2017) Comparison of rheological properties of graphene / carbon nanotube hydrogenated oil based biodegradable drilling fluid. In: UNSPECIFIED.

Chai, Y.H. and Yusup, S. and Chok, V.S. and Irawan, S. and Singh, J.S.D.B. (2017) Thermophysical properties of graphene nanosheets � Hydrogenated oil based nanofluid for drilling fluid improvements. Applied Thermal Engineering, 122. pp. 794-805. ISSN 13594311

Chai, Y.H. and Yusup, S. and Chok, V.S. and Arpin, M.T. and Irawan, S. (2016) Investigation of thermal conductivity of multi walled carbon nanotube dispersed in hydrogenated oil based drilling fluids. Applied Thermal Engineering, 107. pp. 1019-1025. ISSN 13594311

Chai, Y.H. and Yusup, S. and Chok, V.S. (2015) A review on nanoparticle addition in base fluid for improvement of biodegradable ester-based drilling fluid properties. Chemical Engineering Transactions, 45. pp. 1447-1452. ISSN 22839216