Muhammad Anif Abu Zarin - Academia.edu (original) (raw)
Papers by Muhammad Anif Abu Zarin
Energy Conversion and Management, 2021
Abstract Pre-treatment is the key step in biorefinery for enhancing cellulose accessibility from ... more Abstract Pre-treatment is the key step in biorefinery for enhancing cellulose accessibility from lignocellulosic biomass (LB) such as empty fruit bunch (EFB), which contains highly valuable cellulose. Ozonolysis pre-treatment appears as a promising green alternative for isolation of EFB to cellulose. This study develops the diffusion–reaction model of EFB ozonolysis inside a well-mixed novel OzBiONY® ozonolysis reactor at lab scale production. The mathematical model is numerically solved using COMSOL Multiphysics® software. Kinetic reaction parameters are computationally estimated via gradient-based Sparse Nonlinear Optimizer (SNOPT) method with sequential quadratic programming (SQP) algorithm. The evolution of ozone velocity and concentration profiles inside the reactor are simulated by computational fluid dynamics (CFD) method to study the effect of biomass particle sizes. The larger particle size consumes higher ozone (k1 = 2.23 m3/mol∙s) compared to the smaller particle size (k1= 0.09 m3/mol∙s). This reveals that larger biomass particle confers faster delignification rate and a much higher degradation of insoluble lignin. The simulation results demonstrate ozone velocity at the surface of larger particle is lower, but the surface concentration of ozone is higher. The diffusion–reaction model of EFB ozonolysis elucidates the plausible reaction pathway of lignin degradation via ozonolysis pre-treatment with minimum objective function (Z) of 1.41 × 10−3. From experimental results, the highest lignin degradation is 78 wt.% and the highest glucose yield is 12 wt.%. The outcomes of this research will contribute to the development of smart biorefinery technology and systems for sugar production in a sustainable and circular economy.
Concerns towards diminishing fossil resources compel the chemical industry to explore alternative... more Concerns towards diminishing fossil resources compel the chemical industry to explore alternatives for basic chemical productions. Carbohydrates derived biomass are promising alternatives for sustainable supply of fuels and valuable chemicals due to their abundant and relatively inexpensive properties. Carbohydrate such as glucose is a compound from which various bio-based chemicals can be derived. Among those chemicals, levulinic acid (LA) has received significant attention as platform chemicals for synthesizing a broad range of bio-based fuels. The conversion of carbohydrates to LA have been conducted in water in the presence of various catalysts, including homogeneous and heterogeneous catalysts. In this study, a new zeolite immobilized ionic liquid (HY-IL) catalyst has been explored for catalytic conversion of glucose to LA. The catalyst was prepared by immobilizing an acidic ionic liquid; 1,4 methylsulfonic acid imidazolium tetrachloroaluminate ([MSIM][AlCl4]) into HY zeolite w...
Levulinic acid (LA) is an ideal platform chemical with various applications. Ionic liquid,1,4-met... more Levulinic acid (LA) is an ideal platform chemical with various applications. Ionic liquid,1,4-methyl sulfonic acid imidazolium tetrachloroaluminate ([MSIM][AlCl4]) has been immobilized into HY zeolite and tested for the conversion of cellulose to LA. Response surface methodology (RSM), based on Box–Behnken design (BBD), was employed to identify the optimum conditions for LA production. Experimental results indicate that the second-order model was sufficient for all independent variables with R 2 = 0.90. The optimum temperature, reaction time, catalyst dosage, and feedstock loading for cellulose conversion are 200 °C, 7 h, 0.6 g, and 0.3 g, respectively with LA yield of 27.2%. Meanwhile, the LA yield from oil palm frond (OPF) and empty fruit bunch (EFB) at the optimum condition is 24.1% and 21.3%, respectively. The efficiency of OPF and EFB for LA production is 75% and 72%, respectively. This study demonstrates the potential of HY-IL for biomass conversion to levulinic acid under mil...
Energy Conversion and Management
Energy Conversion and Management, 2021
Abstract Pre-treatment is the key step in biorefinery for enhancing cellulose accessibility from ... more Abstract Pre-treatment is the key step in biorefinery for enhancing cellulose accessibility from lignocellulosic biomass (LB) such as empty fruit bunch (EFB), which contains highly valuable cellulose. Ozonolysis pre-treatment appears as a promising green alternative for isolation of EFB to cellulose. This study develops the diffusion–reaction model of EFB ozonolysis inside a well-mixed novel OzBiONY® ozonolysis reactor at lab scale production. The mathematical model is numerically solved using COMSOL Multiphysics® software. Kinetic reaction parameters are computationally estimated via gradient-based Sparse Nonlinear Optimizer (SNOPT) method with sequential quadratic programming (SQP) algorithm. The evolution of ozone velocity and concentration profiles inside the reactor are simulated by computational fluid dynamics (CFD) method to study the effect of biomass particle sizes. The larger particle size consumes higher ozone (k1 = 2.23 m3/mol∙s) compared to the smaller particle size (k1= 0.09 m3/mol∙s). This reveals that larger biomass particle confers faster delignification rate and a much higher degradation of insoluble lignin. The simulation results demonstrate ozone velocity at the surface of larger particle is lower, but the surface concentration of ozone is higher. The diffusion–reaction model of EFB ozonolysis elucidates the plausible reaction pathway of lignin degradation via ozonolysis pre-treatment with minimum objective function (Z) of 1.41 × 10−3. From experimental results, the highest lignin degradation is 78 wt.% and the highest glucose yield is 12 wt.%. The outcomes of this research will contribute to the development of smart biorefinery technology and systems for sugar production in a sustainable and circular economy.
Concerns towards diminishing fossil resources compel the chemical industry to explore alternative... more Concerns towards diminishing fossil resources compel the chemical industry to explore alternatives for basic chemical productions. Carbohydrates derived biomass are promising alternatives for sustainable supply of fuels and valuable chemicals due to their abundant and relatively inexpensive properties. Carbohydrate such as glucose is a compound from which various bio-based chemicals can be derived. Among those chemicals, levulinic acid (LA) has received significant attention as platform chemicals for synthesizing a broad range of bio-based fuels. The conversion of carbohydrates to LA have been conducted in water in the presence of various catalysts, including homogeneous and heterogeneous catalysts. In this study, a new zeolite immobilized ionic liquid (HY-IL) catalyst has been explored for catalytic conversion of glucose to LA. The catalyst was prepared by immobilizing an acidic ionic liquid; 1,4 methylsulfonic acid imidazolium tetrachloroaluminate ([MSIM][AlCl4]) into HY zeolite w...
Levulinic acid (LA) is an ideal platform chemical with various applications. Ionic liquid,1,4-met... more Levulinic acid (LA) is an ideal platform chemical with various applications. Ionic liquid,1,4-methyl sulfonic acid imidazolium tetrachloroaluminate ([MSIM][AlCl4]) has been immobilized into HY zeolite and tested for the conversion of cellulose to LA. Response surface methodology (RSM), based on Box–Behnken design (BBD), was employed to identify the optimum conditions for LA production. Experimental results indicate that the second-order model was sufficient for all independent variables with R 2 = 0.90. The optimum temperature, reaction time, catalyst dosage, and feedstock loading for cellulose conversion are 200 °C, 7 h, 0.6 g, and 0.3 g, respectively with LA yield of 27.2%. Meanwhile, the LA yield from oil palm frond (OPF) and empty fruit bunch (EFB) at the optimum condition is 24.1% and 21.3%, respectively. The efficiency of OPF and EFB for LA production is 75% and 72%, respectively. This study demonstrates the potential of HY-IL for biomass conversion to levulinic acid under mil...
Energy Conversion and Management