| Direct production of biodiesel from rapeseed by reactive extraction/in situ transesterification R Zakaria, AP Harvey Fuel Processing Technology 102, 53-60, 2012 | 99 | 2012 |
| Performance and exhaust emission characteristics of direct-injection diesel engine fueled with enriched biodiesel MAH Altaie, RB Janius, U Rashid, YH Taufiq-Yap, R Yunus, R Zakaria, ... Energy conversion and management 106, 365-372, 2015 | 89 | 2015 |
| Cold flow and fuel properties of methyl oleate and palm-oil methyl ester blends MAH Altaie, RB Janius, U Rashid, YHT Yap, R Yunus, R Zakaria Fuel 160, 238-244, 2015 | 58 | 2015 |
| Biodiesel production by in situ transesterification FH Kasim, AP Harvey, R Zakaria Biofuels 1 (2), 355-365, 2010 | 55 | 2010 |
| Cellulase production from treated oil palm empty fruit bunch degradation by locally isolated Thermobifida fusca NAF Harun, AS Baharuddin, MHM Zainudin, EK Bahrin, MN Naim, ... BioResources 8 (1), 676-687, 2013 | 50 | 2013 |
| Potential of zeolite and algae in biomass immobilization SA Emami Moghaddam, R Harun, MN Mokhtar, R Zakaria BioMed research international 2018, 2018 | 42 | 2018 |
| Enzymatic saccharification of oil palm mesocarp fiber (OPMF) treated with superheated steam NAN Mahmud, AS Baharuddin, EK Bahrin, A Sulaiman, MN Naim, ... BioResources 8 (1), 1320-1331, 2013 | 39 | 2013 |
| Enrichment of minor components from crude palm oil and palm-pressed mesocarp fibre oil via sequential adsorption-desorption strategy KY Phoon, HS Ng, R Zakaria, HS Yim, MN Mokhtar Industrial crops and products 113, 187-195, 2018 | 30 | 2018 |
| Direct utilization of kitchen waste for bioethanol production by separate hydrolysis and fermentation (SHF) using locally isolated yeast HS Hafid, NA Abdul Rahman, UK Md Shah, A Samsu Baharudin, ... International Journal of Green Energy 13 (3), 248-259, 2016 | 23 | 2016 |
| Effect of high-pressure steam treatment on enzymatic saccharification of oil palm empty fruit bunches AS Baharuddin, NSHM Yunos, NAN Mahmud, R Zakaria, KFM Yunos BioResources 7 (3), 3525-3538, 2012 | 22 | 2012 |
| Biorefining based on biodiesel production: chemical and physical characterisation of reactively extracted rapeseed Y Ren, A Harvey, R Zakaria Journal of Biobased Materials and Bioenergy 4 (1), 79-86, 2010 | 20 | 2010 |
| Characterization of novel rigid-foam polyurethanes from residual palm oil and algae oil JC Gomez, R Zakaria, MM Aung, MN Mokhtar, RB Yunus Journal of Materials Research and Technology 9 (6), 16303-16316, 2020 | 19 | 2020 |
| Kinetic and equilibrium modeling for the biosorption of metal ion by Zeolite 13X-Algal-Alginate Beads (ZABs) SAE Moghaddam, R Harun, MN Mokhtar, R Zakaria Journal of Water Process Engineering 33, 101057, 2020 | 18 | 2020 |
| Extraction of oil from passion fruit seeds using surfactant-assisted aqueous extraction HF Surlehan, NA Noor Azman, R Zakaria, NA Mohd Amin Food Research 3 (4), 348-356, 2019 | 17 | 2019 |
| Kinetics of reactive extraction/in situ transesterification of rapeseed oil R Zakaria, AP Harvey Fuel processing technology 125, 34-40, 2014 | 17 | 2014 |
| Synthesis and characterization of polyurethanes from residual palm oil with high poly-unsaturated fatty acid oils as additive JC Gomez, R Zakaria, MM Aung, MN Mokhtar, R Yunus Polymers 13 (23), 4214, 2021 | 16 | 2021 |
| Study on residual oil recovery from empty fruit bunch by combination of water and steam process JC Gomez, MN Mokhtar, A Sulaiman, R Zakaria, AS Baharuddin, Z Busu Journal of Food Process Engineering 38 (4), 385-394, 2015 | 12 | 2015 |
| Application of sandwich membrane for the treatment of palm oil mill effluent (POME) for water reuse NA Azmi, KFM Yunos, R Zakaria Procedia Engineering, 1980-1981, 2012 | 10 | 2012 |
| Degradation of enriched biodiesel under different storage conditions MA Hasan Altaie, RB Janius, R Yunus, YH Taufiq-Yap, R Zakaria Biofuels 8 (2), 181-186, 2017 | 9 | 2017 |
| Analysis of permeate pressure build-up effects on separation performance of asymmetric hollow fiber membranes P Kundu, R Zakaria, A Chakma, X Feng Chemical engineering science 104, 849-856, 2013 | 9 | 2013 |
