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Microwave physicochemical activation:an advanced approach to produce activated biochar for palm oil mill effluent treatment

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Waste Disposal and Sustainable Energy 2022年第4期4卷 323-333页

作者： Kew Kiong Kong pe.er nai yuh yek How Sing Sii Man Djun Lee Rock Keey Liew Su Shiung Lam Centre for Research of Innovation and Sustainable Development University of Technology Sarawak96000SibuSarawakMalaysia Department of Mechanical Engineering Curtin University98009MiriSarawakMalaysia NV WESTerN PLT No.208BSecond FloorMacalister Road10400GeorgetownPenangMalaysia Higher Institution Centre of Excellence(HICoE) Institute of Tropical Aquaculture and Fisheries(AKUATROP)Universiti Malaysia TerengganuKuala Nerus21030TerengganuMalaysia Sustainability Cluster School of EngineeringUniversity of Petroleum and Energy StudiesDehradunUttarakhand248007India

Empty fruit bunch(EFB)is an industrial waste that is abundantly available in ***,EFBs were burned and dumped on the plantation site,resulting in global warming pollution from methane and carbon *** this study,the EFB was transformed into a high-surface area of activated biochar through a microwave physicochemical approach involving the combination of steam followed by a hydroxide mixture for palm oil mill effluent(POME)*** was found that BET(Brunauer-Emmett-Teller)surface area and total pore volume of activated biochar were 365.60 m^(2)/g and 0.16 cm^(3)/g,*** surface morphology of activated biochar revealed the formation of well-developed pores that can potentially be used as adsorbents to treat *** removal efficiency of biochemical oxygen demand(BOD)and chemical oxygen demand(COD)of POME achieved 75%-55%,*** study offers insight into the transformation of industrial waste into value-added products for sustainable environmental remediation.

关键词： Empty fruit bunch Microwave Physicochemical Activated biochar Palm oil mill effluent

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Microwave torrefaction of empty fruit bunch pellet:Simulation and validation of electric field and temperature distribution

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Journal of Bioresources and Bioproducts 2022年第4期7卷 270-277页

作者： pe.er nai yuh yek Sieng Huat Kong Ming Chiat Law Changlei Xia Rock Keey Liew Teck Sung Sie Jun Wei Lim Su Shiung Lam Centre for Research of Innovation and Sustainable Development University of Technology SarawakJalan UniversitySibuSarawak 96000Malaysia School of Foundation Studies University of Technology SarawakJalan UniversitySibuSarawak 96000Malaysia Department of Mechanical Engineering Faculty of Engineering and ScienceCurtin University Malaysia CampusMiriSarawak 98009Malaysia Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China NV WESTerN PLT GeorgetownPenang 10400Malaysia Department of Fundamental and Applied Sciences HICoE-Centre for Biofuel and Biochemical ResearchInstitute of Self-Sustainable BuildingUniversity Technology PETRONASDarul RidzuanSeri IskandarPerak 32610Malaysia Higher Institution Centre of Excellence(HICoE) Institute of Tropical Aquaculture and Fisheries(AKUATROP)University Malaysia TerengganuKuala NerusTerengganu 21030Malaysia Sustainability Cluster School of EngineeringUniversity of Petroleum&Energy StudiesDehradunUttarakhand 248007India

Microwave simulation is significant in identifying a reactor design allowing the biomass to be heated and processed *** study integrated the radio frequency and transient heat transfer modules to simulate the microwave distribution and investigated the performance of microwave heating in the *** simulation results were compared with the experimental findings us-ing the finite element analysis software of COMSOL MULTIPHYSICS to predict the temperature profile and electric field of microwave in the biomass(empty fruit bunch pellets).The higher temperature distribution was observed at the bottom and centre section of the empty fruit bunch pellet bed in the reactor,showing the uniqueness of microwave *** to the simula-tion results,the temperature profile obtained through the specific cavity geometry and dielectric properties agreed with the experimental temperature *** simulated temperature profile demonstrated a logarithmic increase of 120°C/min at the first 50 s followed by 50°C/min until 350 *** experimental temperature profile showed three different heating rates before reaching 300°C,including 78.3°C/min(50-120°C),30.6°C/min(121-250°C),and 105°C/min(250-300°C).The results of this study might contribute to the improvement of microwave heating in biomass torrefaction.

关键词： Microwave Torrefaction Simulation Energy Temperature

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Utilization of microwave steam pyrolysis to produce biochar for thermal energy storage

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Waste Disposal and Sustainable Energy 2022年第4期4卷 335-341页

作者： Wahap bin Abu Bakar pe.er nai yuh yek Kah Yein Cheong Augustine Chioma Affam Chee Chung Wong Rock Keey Liew Yie Hua Tan Su Shiung Lam Centre for Research of Innovation and Sustainable Development University of Technology SarawakNo.1Jalan University96000SibuMalaysia Centre on Technological Readiness and Innovation in Business Technopreneurship(CONTRIBUTE) University of Technology Sarawak96000SibuSarawakMalaysia NV Western PLT No.208BSecond FloorMacalister Road10400GeorgetownPenangMalaysia Department of Chemical and Energy Engineering Faculty of Engineering and ScienceCurtin University MalaysiaCDT 25098009MiriSarawakMalaysia Higher Institution Centre of Excellence(HICoE) Institute of Tropical Aquaculture and Fisheries(AKUATROP)Universiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia

Microwave steam pyrolysis(MSP)is an innovative thermochemical approach to converting biomass into high-quality biochar using steam to improve the dielectric heating of microwave *** shows high fixed carbon and carbon contents at a maximum temperature of 550℃in 10 *** MSP achieved a heating rate of 112℃/min from 200℃to 400℃to produce biochar ***,the thermal properties of biochar in microwave heating were investigated in this study to explore its potential as a microwave heat-absorbent *** is able to perform volumetric and controllable heating to the ***,biochar shows good microwave heat absorbency,storing and transferring heat *** temperature profile of three different sizes of biochar was investigated to examine the efficiency of biochar in heat absorption from microwave *** was found that the powder form of biochar showed a higher heat transfer rate of 40℃/min and a low cooling rate of 7.5℃/*** presented results are useful for evaluating the application of biochar as a promising medium for heat storage systems.

关键词： Microwave Steam Pyrolysis Biochar Thermal Storage

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