All Stories

  1. Artificial intelligence and smart solutions for air pollution and water quality index assessment: A review of recent works

    Article • January 2025, American Institute of Physics

    Dr Zainal Ahmad, Mr Nor Irwin N.I. Basir

  2. Reduced Bayesian Optimized Stacked Regressor (RBOSR): A highly efficient stacked approach for improved air pollution prediction

    Article • Applied Soft Computing, September 2023, Elsevier

    Dr Zainal Ahmad

  3. Recent trends in sustainable biodiesel production using heterogeneous nanocatalysts: Function of supports, promoters, synthesis techniques, reaction mechanism, and kinetics and thermodynamic studies

    Article • Energy Conversion and Management, March 2023, Elsevier

    Dr Zainal Ahmad

  4. Monitoring chloride, sulfite, phosphate and cycle of concentration in palm oil mill boiler using statistical process control analysis

    Article • January 2023, American Institute of Physics

    Dr Zainal Ahmad

  5. Model development for turbine energy yield, carbon monoxide and nitrogen oxide from gas turbine power plant

    Article • January 2023, American Institute of Physics

    Dr Zainal Ahmad

  6. Improving model prediction of PM2.5 and PM10 using combination of features selection and machine learning approach

    Article • January 2023, American Institute of Physics

    Dr Zainal Ahmad

  7. Bio-jet fuel: An overview of various feedstock and production routes

    Article • January 2023, American Institute of Physics

    Dr Zainal Ahmad

  8. Process simulation and stochastic multiobjective optimisation of homogeneously acid-catalysed microalgal in-situ biodiesel production considering economic and environmental criteria

    Article • Fuel, November 2022, Elsevier

    Dr Zainal Ahmad

  9. Phosphate Removal with pH‐Responsive Calcium Carbonate Nanoparticles

    Article • Chemical Engineering & Technology, June 2022, Wiley

    Dr Zainal Ahmad

  10. Production of hydrogen and value-added carbon materials by catalytic methane decomposition: a review

    Article • Environmental Chemistry Letters, April 2022, Springer Science + Business Media

    Dr Zainal Ahmad

  11. Advanced catalysts and effect of operating parameters in ethanol dry reforming for hydrogen generation. A review

    Article • Environmental Chemistry Letters, February 2022, Springer Science + Business Media

    Dr Zainal Ahmad

  12. Application of artificial neural network to predict water flux from pre-treated palm oil mill effluent using direct contact membrane distillation

    Article • Materials Today Proceedings, January 2022, Elsevier

    Dr. R.A. Ilyas, Dr Zainal Ahmad

  13. Analysing Different Dynamically Modelled Data Structures and Machine Learning Algorithms to Predict PM2.5 Concentration in China

    Article • January 2022, Elsevier

    Dr Zainal Ahmad

  14. Mechanistic model-based control of biodiesel production processes: a review of needs and scopes

    Article • Chemical Engineering Communications, December 2021, Taylor & Francis

    Dr Zainal Ahmad

  15. Feedstocks, catalysts, process variables and techniques for biodiesel production by one-pot extraction-transesterification: a review

    Article • Environmental Chemistry Letters, November 2021, Springer Science + Business Media

    Dr Zainal Ahmad

  16. Low‐density polyethylene tubular reactor control using neural Wiener model predictive control

    Article • Asia-Pacific Journal of Chemical Engineering, August 2021, Wiley

    Dr Zainal Ahmad

  17. Design and retrofitting of ultrasound intensified and ionic liquid catalyzed in situ algal biodiesel production

    Article • Chemical Engineering Research and Design, July 2021, Elsevier

    Dr Zainal Ahmad

  18. Comparing Different Pre-processing Techniques and Machine Learning Models to Predict PM10 and PM2.5 Concentration in Malaysia

    Article • January 2021, Springer Science + Business Media

    Dr Zainal Ahmad

  19. Modeling of low density polyethylene tubular reactor using nonlinear block-oriented model

    Article • Materials Today Proceedings, January 2021, Elsevier

    Dr Zainal Ahmad

  20. Intensification and analysis of ethyl levulinate production process having a reactive distillation through vapor recompression and bottom flash techniques

    Article • Chemical Engineering and Processing - Process Intensification, October 2020, Elsevier

    Dr Zainal Ahmad

  21. Unified View of Magnetic Nanoparticle Separation under Magnetophoresis

    Article • Langmuir, June 2020, American Chemical Society (ACS)

    Dr Zainal Ahmad

  22. Designing real time model mobile monitoring system for model predictive control in a nonlinear continuous stirred tank reactor

    Article • Asia-Pacific Journal of Chemical Engineering, February 2020, Wiley

    Dr Zainal Ahmad

  23. Temperature control of low density polyethylene (LDPE) tubular reactor using Model Predictive Control (MPC)

    Article • IOP Conference Series Materials Science and Engineering, January 2020, Institute of Physics Publishing

    Dr Zainal Ahmad

  24. Minimizing loop interaction in Multi Input Multi Output (MIMO) system using partial decoupler approach

    Article • IOP Conference Series Materials Science and Engineering, December 2019, Institute of Physics Publishing

    Dr Zainal Ahmad

  25. Low density polyethylene tubular reactor control using state space model predictive control

    Article • Chemical Engineering Communications, October 2019, Taylor & Francis

    Dr Zainal Ahmad

  26. Prediction of water quality index (WQI) using support vector machine (SVM) and least square-support vector machine (LS-SVM)

    Article • International Journal of River Basin Management, June 2019, Taylor & Francis

    Dr Zainal Ahmad

  27. PREDICTION OF AIR POLLUTION INDEX (API) USING SUPPORT VECTOR MACHINE (SVM)

    Article • Journal of Environmental Chemical Engineering, June 2019, Elsevier

    Dr Zainal Ahmad

  28. Quasi steady state approximation in enzymatic biopolymerization reactor

    Article • January 2019, American Institute of Physics

    Dr Zainal Ahmad

  29. Optimization study on the CO2 and H2S removal in natural gas using primary, secondary, tertiary and mixed amine

    Article • January 2019, American Institute of Physics

    Dr Zainal Ahmad

  30. Prediction of equilibrium water dew point of natural gas in TEG dehydration systems using Bayesian Feedforward Artificial Neural Network (FANN)

    Article • Petroleum Science and Technology, August 2018, Taylor & Francis

    Dr Zainal Ahmad

  31. Modeling and nonlinearity studies of low density polyethylene (LDPE) tubular reactor

    Article • Materials Today Proceedings, January 2018, Elsevier

    Dr Zainal Ahmad

  32. Kinetics of Low Field Gradient Magnetophoresis in the Presence of Magnetically Induced Convection

    Article • The Journal of Physical Chemistry C, March 2017, American Chemical Society (ACS)

    Dr Zainal Ahmad

  33. Forecasting of Water Quality Index (WQI) using machine learning

    Article • International Journal of River Basin Management, November 2016, Taylor & Francis

    Dr Zainal Ahmad

  34. Estimation of oil and gas properties in petroleum production and processing operations using rigorous model

    Article • Petroleum Science and Technology, July 2016, Taylor & Francis

    Dr Alireza Baghban, Dr Zainal Ahmad

  35. Experimental investigation the effect of nanoparticles on micellization behavior of a surfactant: Application to EOR

    Article • Petroleum Science and Technology, June 2016, Taylor & Francis

    Dr Zainal Ahmad

  36. Evaluation of the ability of the hydrophobic nanoparticles of SiO2in the EOR process through carbonate rock samples

    Article • Petroleum Science and Technology, June 2016, Taylor & Francis

    Dr Zainal Ahmad

  37. Computational intelligent strategies to predict energy conservation benefits in excess air controlled gas-fired systems

    Article • Applied Thermal Engineering, June 2016, Elsevier

    Dr Alireza Baghban, Dr Zainal Ahmad

  38. Modeling of true vapor pressure of petroleum products using ANFIS algorithm

    Article • Petroleum Science and Technology, May 2016, Taylor & Francis

    Dr Alireza Baghban, Dr Zainal Ahmad

  39. Estimation of natural gases water content using adaptive neuro-fuzzy inference system

    Article • Petroleum Science and Technology, May 2016, Taylor & Francis

    Dr Alireza Baghban, Dr Zainal Ahmad

  40. Estimation of water content of natural gases using particle swarm optimization method

    Article • Petroleum Science and Technology, April 2016, Taylor & Francis

    Dr Zainal Ahmad

  41. A new empirical correlation for prediction of carbon dioxide separation from different gas mixtures

    Article • Petroleum Science and Technology, March 2016, Taylor & Francis

    Dr Zainal Ahmad

  42. Analysis of bio diesel production using heterogeneous catalyst

    Article • IOP Conference Series Materials Science and Engineering, March 2016, Institute of Physics Publishing

    Dr Zainal Ahmad

  43. Improving the prediction of adsorption factor using FANN

    Article • Petroleum Science and Technology, January 2016, Taylor & Francis

    Dr Zainal Ahmad

  44. Operator Training Simulator (OTS) for FAME Plant

    Article • Process Safety and Environmental Protection, January 2016, Elsevier

    Dr Zainal Ahmad

  45. Multi-loop Control System Design for Biodiesel Process using Waste Cooking Oil

    Article • Journal of Physics Conference Series, June 2015, Institute of Physics Publishing

    Dr Zainal Ahmad

  46. Magnetophoresis of superparamagnetic nanoparticles at low field gradient: hydrodynamic effect

    Article • Soft Matter, January 2015, Royal Society of Chemistry

    Dr Zainal Ahmad

  47. Correction: Magnetophoresis of superparamagnetic nanoparticles at low field gradient: hydrodynamic effect

    Article • Soft Matter, January 2015, Royal Society of Chemistry

    Dr Zainal Ahmad

  48. Utilizing machine learning in xylose production using local biomass

    Article • Chemical Product and Process Modeling, January 2015, De Gruyter

    Dr Zainal Ahmad

  49. Multi input single output model predictive control of non-linear bio-polymerization process

    Article • January 2015, American Institute of Physics

    Dr Zainal Ahmad

  50. Fabrication and Characterization of Crystalline Cupric Oxide (CuO) Films by Simple Immersion Method

    Article • Procedia Manufacturing, January 2015, Elsevier

    Dr Zainal Ahmad

  51. Transesterification of waste cooking palm oil by MnZr with supported alumina as a potential heterogeneous catalyst

    Article • Journal of Industrial and Engineering Chemistry, November 2014, Elsevier

    Dr Zainal Ahmad

  52. Highly active alumina-supported Cs–Zr mixed oxide catalysts for low-temperature transesterification of waste cooking oil

    Article • Applied Catalysis A General, October 2014, Elsevier

    Dr Zainal Ahmad

  53. Plantwide Control of biodiesel production from waste cooking oil

    Article • Industrial & Engineering Chemistry Research, September 2014, American Chemical Society (ACS)

    Dr Zainal Ahmad

  54. Hybrid Model for Biopolymerization Process (ε-Caprolactone to Polycaprolactone)

    Article • Applied Mechanics and Materials, September 2014, Trans Tech Publications

    Dr Zainal Ahmad

  55. Multi-objective optimization of two alkali catalyzed processes for biodiesel from waste cooking oil

    Article • Energy Conversion and Management, September 2014, Elsevier

    Dr Zainal Ahmad

  56. Synthesis of fatty acid methyl esters via the methanolysis of palm oil over Ca3.5xZr0.5yAlxO3 mixed oxide catalyst

    Article • Renewable Energy, June 2014, Elsevier

    Dr Zainal Ahmad

  57. Kinetics and modeling of pepsin soluble collagen (PSC) extraction from the skin of malaysian catfish (Hybrid Clarias sp.)

    Article • Journal of the Korean Society for Applied Biological Chemistry, February 2014, Springer Science + Business Media

    Dr Zainal Ahmad

  58. Comprehensive review on Operating Training Simulator in chemical industry

    Article • Reviews in Chemical Engineering, January 2014, De Gruyter

    Dr Zainal Ahmad

  59. Techno-Economic Analysis of an Alkali Catalyzed Biodiesel Production Using Waste Palm Oil

    Article • Applied Mechanics and Materials, December 2013, Trans Tech Publications

    Dr Zainal Ahmad

  60. Influence of impurities on biodiesel production from Jatropha curcas L. by supercritical methyl acetate process

    Article • The Journal of Supercritical Fluids, July 2013, Elsevier

    Dr Zainal Ahmad

  61. Feed-forward neural network modeling and optimization using genetic algorithm: Enzymatic hydrolysis of xylose production

    Article • June 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Zainal Ahmad

  62. A hybrid of back propagation neural network and genetic algorithm for optimization of collagen extraction from Malaysian cultured catfish (Hybrid Clarias sp.)

    Article • Biotechnology and Bioprocess Engineering, April 2013, Springer Science + Business Media

    Dr Zainal Ahmad

  63. Biodiesel production by non-catalytic supercritical methyl acetate: Thermal stability study

    Article • Applied Energy, January 2013, Elsevier

    Dr Zainal Ahmad

  64. Comparative Study between Candida antarctica Lipase B and Pseudomonas floroscens as Catalyst for Polycaprolactone Production

    Article • Advanced Materials Research, December 2012, Trans Tech Publications

    Dr Zainal Ahmad

  65. Dempster-Shafer method as a tool in selective combination in multiple neural networks

    Article • July 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Zainal Ahmad

  66. Biopolycaprolactone molecular weight prediction based on neural network technique in a batch reactor

    Article • July 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Zainal Ahmad

  67. MODEL PREDICTIVE CONTROL (MPC) AND ITS CURRENT ISSUES IN CHEMICAL ENGINEERING

    Article • Chemical Engineering Communications, April 2012, Taylor & Francis

    Dr Zainal Ahmad

  68. Modeling of Polycaprolactone Production from ε-Caprolactone Using Neural Network

    Article • January 2012, Springer Science + Business Media

    Dr Zainal Ahmad

  69. Compressive Strength Prediction of Concrete Recycled Aggregates made from Ceramic Tiles using Feedforward Artificial Neural Network (FANN)

    Article • January 2012, Elsevier

    Dr Zainal Ahmad

  70. Optimum parameters for fault detection and diagnosis system of batch reaction using multiple neural networks

    Article • Journal of Loss Prevention in the Process Industries, January 2012, Elsevier

    Dr Zainal Ahmad

  71. Nonlinear Process Modeling of “Shell” Heavy Oil Fractionator using Neural Network

    Article • Journal of Applied Sciences, December 2011, Science Alert

    Dr Zainal Ahmad

  72. Multiple Input-Single Output (MISO) Feedforward Artificial Neural Network (FANN) Models for Pilot Plant Binary Distillation Column

    Article • September 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Zainal Ahmad

  73. Neural network based soft sensor for prediction of biopolycaprolactone molecular weight using bootstrap neural network technique

    Article • June 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Zainal Ahmad

  74. Candida antarctica as catalyst for polycaprolactone synthesis: effect of temperature and solvents

    Article • Asia-Pacific Journal of Chemical Engineering, April 2011, Wiley

    Dr Zainal Ahmad

  75. Modeling and Nonlinearity Studies of Industrial i-Butane/n-Butane Distillation Column

    Article • Journal of Applied Sciences, March 2011, Science Alert

    Dr Zainal Ahmad

  76. Feedforward artificial neural network to improve model predictive control in biological processes

    Article • International Journal of Automation and Control, January 2011, Inderscience Publishers

    Dr Zainal Ahmad

  77. Comparison and optimisation of biodiesel production from Jatropha curcas oil using supercritical methyl acetate and methanol

    Article • Chemical Papers, January 2011, Springer Science + Business Media

    Dr Zainal Ahmad

  78. IMPROVING NONLINEAR PROCESS MODELING USING MULTIPLE NEURAL NETWORK COMBINATION THROUGH BAYESIAN MODEL AVERAGING (BMA)

    Article • IIUM Engineering Journal, September 2010, IIUM Press

    Dr Zainal Ahmad

  79. Mutual Solubility Study in Supercritical Fluid Extraction of Tocopherols from Crude Palm Oil Using CO2 Solvent

    Article • International Journal of Molecular Sciences, September 2010, MDPI AG

    Dr Zainal Ahmad

  80. Comprehensive review in modeling and control of polymerization process

    Article • The Canadian Journal of Chemical Engineering, July 2010, Wiley

    Dr Zainal Ahmad

  81. Neural network acted as a soft sensor for biopolymer quality ( Mwt)

    Article • June 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Zainal Ahmad

  82. Parameters optimization of rice husk ash (RHA)/CaO/CeO2 sorbent for predicting SO2/NO sorption capacity using response surface and neural network models

    Article • Journal of Hazardous Materials, June 2010, Elsevier

    Dr Zainal Ahmad

  83. Nonlinear process modeling of fructosyltransferase (FTase) using bootstrap re-sampling neural network model

    Article • Bioprocess and Biosystems Engineering, November 2009, Springer Science + Business Media

    Dr Zainal Ahmad

  84. Solubility of β-Carotene from Crude Palm Oil in High-Temperature and High-Pressure Carbon Dioxide

    Article • Journal of Chemical & Engineering Data, August 2009, American Chemical Society (ACS)

    Dr Zainal Ahmad

  85. Review on multiple Neural Networks Application

    Article • Asia-Pacific Journal of Chemical Engineering, July 2009, Wiley

    Dr Zainal Ahmad

  86. Review on how the FANN improve the model prediction control

    Article • Chemical Product and Process Modeling, January 2009, De Gruyter

    Dr Zainal Ahmad

  87. Auto selective combination in multiple neural networks combination

    Article • January 2009, Springer Science + Business Media

    Dr Zainal Ahmad

  88. MIMO Neural Network Model for Pilot Plant Distillation Column

    Article • January 2009, Elsevier

    Dr Zainal Ahmad

  89. Selective combination of multiple neural networks for improving model prediction in nonlinear systems modelling through forward selection and backward elimination

    Article • Neurocomputing, January 2009, Elsevier

    Dr Zainal Ahmad

  90. Supercritical fluid extraction of β-carotene from crude palm oil using CO2

    Article • Journal of Food Engineering, December 2008, Elsevier

    Dr Zainal Ahmad

  91. Extraction of Fish Oil by Fractionation through Supercritical Carbon Dioxide

    Article • Journal of Chemical & Engineering Data, September 2008, American Chemical Society (ACS)

    Dr Zainal Ahmad

  92. Mutual solubility study for 94.2:5.8 of ethanol to octane with supercritical carbon dioxide solvent

    Article • Journal of the Chinese Institute of Chemical Engineers, July 2008, Elsevier

    Dr Zainal Ahmad

  93. Phase equilibrium studying for the supercritical fluid extraction process using carbon dioxide solvent with 1.35 mole ratio of octane to ethanol mixture

    Article • Chemical Engineering Journal, July 2008, Elsevier

    Dr Zainal Ahmad

  94. Selective combination in multiple neural networks using correlation analysis

    Article • Jurnal Teknologi (Sciences & Engineering), June 2008, Penerbit UTM Press

    Dr Zainal Ahmad

  95. Selective combination using forward selection in multiple neural networks combination

    Article • June 2006, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Zainal Ahmad

  96. Multiple Neural Networks (MNN) Model for Model Predictive Control

    Article • January 2006, Springer Science + Business Media

    Dr Zainal Ahmad

  97. Data fusion in multiple neural networks combination

    Article • Computers & Chemical Engineering, December 2005, Elsevier

    Dr Zainal Ahmad

  98. Selective combination using Bayes Rule in multiple neural networks combination

    Article • Neural Computing and Applications, November 2004, Springer Science + Business Media

    Dr Zainal Ahmad

  99. Multiple neural network (MNN) : Combination Method

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Zainal Ahmad

  100. Multiple neural networks (MNN) combination using Bayesian method

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Zainal Ahmad

  101. Improving long range prediction for nonlinear process modelling through combining multiple neural networks

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Dr Zainal Ahmad