Selected physical properties of binary mixtures of crude glycerol and methanol at various temperatures

Reza Afshar Ghotli,Abdul Raman Abdul Aziz,I.M. Atadashi,D.B. Hasan,Pei San Kong,M.K. Aroua 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1

Crude glycerol, the main byproduct of biodiesel production, consists of excess methanol and otherimpurities and can be converted into other useful products through purification or conversion processes. In this work, dynamic viscosities, densities, excess molar volumes and refractive indexes for severalmixtures of biodiesel crude glycerol and methanol with were determined at different temperatures. Thephysiochemical characteristics of crude glycerol in mixture form with methanol could be useful for thedesign of industrial equipment and purification or conversion process. The results demonstratedtemperature dependent behaviors of all binarymixtures. The empirical correlations were obtained basedon the experimental results.

TiO2 catalyst deactivation in textile wastewater treatment: Current challenges and future advances

Hamisu Umar Farouk,Abdul Aziz Abdul Raman,Wan Mohd Ashri Wan Daud 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.33 No.-

Photocatalytic reactors are not commonplace in treatment of wastewater on a commercial scale. Thiscritical review presents a perspective on how to harness the knowledge gained in areas of mass andphoton transfer limitations via photoreactor intensification processes to prolong TiO2 catalyst life forphoto reactor design. The paper revealed the necessity of TiO2 rational design; considering its surface(rutile and anatase lattices), protonation, water splitting reactions at the TiO2 coordinatively unsaturatedsites (CUS) as the limiting step during photocatalytic reactions adding more knowledge on surfaceinteractions that lead to activity inhibition.

Insight into metal-impregnated biomass based activated carbon for enhanced carbon dioxide adsorption: A review

Jayaprina Gopalan,Archina Buthiyappan,Abdul Aziz Abdul Raman 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.113 No.-

Recently, biomass has been understood and investigated to develop adsorbents for carbon dioxide (CO2)adsorption due to their non-hazardous nature, availability, low disposal cost, and thermal stability. In thisperspective, the sustainable approach of converting biomass into activated carbon (BAC) for the adsorptionof CO2 is promising for solid waste management while reducing anthropogenic greenhouse gas emissions. Among other biomass adsorbents, metal oxide impregnated activated carbon (MBAC) hasdemonstrated excellent adsorption affinity for CO2 adsorption. Therefore, in this review, an evaluationand detailed study of various MBACs for CO2 adsorption is presented for the first time. BAC synthesizemethod, including various carbonization techniques, surface activation and functionality approacheshave been discussed. This study also provides detailed overview of MBAC in the context of various preparationmethods, critical factors and operating parameters for a high CO2 adsorption capacity. Besides, thesolid–gas reactor configuration, cyclic regeneration techniques, CO2 adsorption process mechanism, andCO2 adsorption kinetics also have been discussed. Finally, concluding remarks and future perspectives forbiomass-derived MBAC for CO2 adsorption capture were addressed. This review will also assist in thesearch for alternatives to CO2 adsorption technology, which is both cost-effective and environmentallyfriendly.

Magnetic graphene oxide-biomass activated carbon composite for dye removal

Tan Yan Ying,Abdul Aziz Abdul Raman,Mustapha Mohammed Bello,Archina Buthiyappan 한국화학공학회 2020 Korean Journal of Chemical Engineering Vol.37 No.12

A magnetic composite was synthesized using palm kernel shell-based activated carbon, graphene oxide (GO) and iron oxide. The morphology, textural properties, magnetic properties, crystal structure and functional groups of the composite were studied. The characterization shows the successful formation of the ternary composite with a high specific surface area (280.39m2/g) and abundant surface functional groups. The magnetic properties of the composite indicate a saturation magnetization of 33.72 emu/g, signifying that the composite can be easily separated with an external magnetic field. The performance of the composite was then investigated through the removal of an anionic azo dye, Acid Blue 113, from aqueous solution. The effect of initial pH of the solution, adsorbent dosage and adsorption contact time was studied. The composite achieved an adsorption capacity of 32.2mg/g and 96.3% dye removal. Effective dye removal was still achieved after five cycles of adsorption-regeneration, with the dye removal of 74% after the fifth cycle. The analyses of adsorption isotherm and kinetics show that the adsorption process fits pseudo-secondorder kinetic and Langmuir isotherm models, indicating a monolayer chemisorption process. The excellent adsorption performance and reusability of the composite and its magnetic separability signify its potential as an adsorbent for wastewater treatment.

Recent advances in biomass based activated carbon for carbon dioxide capture – A review

Nuradila Zahirah Mohd Azmi,Archina Buthiyappan,Abdul Aziz Abdul Raman,Muhamad Fazly Abdul Patah,Suriati Sufian 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.116 No.-

Various conventional adsorbents such as metal–organic framework (MOF), zeolites, commercial activatedcarbon, activated alumina, and metal oxides are being used to capture carbon dioxide (CO2) in pre-andpost-combustion. Conventional adsorbents, however, have several shortcomings, including high cost,high energy requirements, and resource scarcity. Waste can be used as a precursor for activated carbondevelopment, which has environmental and economic benefits. This review article aimed to explore thepotential for agricultural waste to be converted into an activated carbon (AC) precursor for CO2 adsorption. Properties and comparison of various biomass-based activated carbon for CO2 adsorption have beendiscussed. Further, hybrid activated carbon-containing functional groups to improve the selectivity andadsorption efficiency of CO2 are also reviewed and summarized. The effects of operating parameters,including types of activating agents, impregnation ratio and activation temperature, were also studied. The properties of AC were compared, such as compositional, surface area, microporous volume, functionalgroups and adsorption capacity. AC derived from waste materials has a high CO2 uptake, comparablewith commercial adsorbents. However, the selection of precursor and activation methods playessential roles in synthesizing of AC. In summary, biomass-based activated carbon is an attractive materialto develop AC for carbon dioxide adsorption.

Recent advances on the coconut shell derived carbonaceous material for the removal of recalcitrant pollutants: A review

Amy Aynee Chan,Archina Buthiyappan,Abdul Aziz Abdul Raman,Shaliza Ibrahim 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.10

Adsorption is a prominent and cost-effective water treatment method that has been used to remove a variety of contaminants due to its efficacy, ease of use, and environmental friendliness. Biosorbents developed from agricultural wastes have been extensively studied. This review gives insight into the potential of carbonaceous coconut shells as a source of biomass material to prepare adsorbents for wastewater treatment. The feasibility of coconut shells as a precursor material is beneficial for extensive industrial-scale applications due to their natural properties and longterm availability. This review article also illustrates the excellent adsorption performance of adsorbents derived from coconut shells that can be an alternative precursor to commercial carbons with a high market price. This review points out the applications of coconut shell-based adsorbents in removing a wide range of contaminants and actual industrial wastewater. Additionally, literature shows that modified coconut shell-based adsorbents show better adsorption performance in removing hazardous pollutants due to enhancement in adsorbents’ structural characteristics. The discussion on the environmental and economic perspectives on utilizing coconut shell-based adsorbents is also of the highlights of this review. It is prospective for industries to explore converting agricultural wastes into low-cost green adsorbents for wastewater treatment.