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Advanced Thermochemical Conversion Approaches for Green Hydrogen Production from Crop Residues

Journal of Renewable Materials 2024年第1期12卷 1-28页

作者： Omojola Awogbemi Ayotunde Adigun Ojo samson adedayo adeleye Department of Mechanical Engineering Ekiti State UniversityAdo EkitiNigeria

The huge volumes of crop residues generated during the production,processing,and consumption of farm products constitute an ecological nuisance when ineffectively *** conversion of crop residues to green hydrogen is one of the sustainable management strategies for ubiquitous crop *** of green hydrogen from crop residue sources will contribute to deepening access to clean and affordable energy,mitigating climate change,and ensuring environmental ***,the deployment of conventional thermochemical technologies for the conversion of crop residues to green hydrogen is costly,requires long residence time,produces low-quality products,and therefore needs to be *** current review examines the conventional,advanced,and integrated thermochemical conversion technologies for crop residues for green hydrogen *** a brief overview of the conventional thermochemical techniques,the review delves into the broad narration of advanced thermochemical technologies including catalytic pyrolysis,microwave pyrolysis,co-pyrolysis,hyropyrolysis,and autothermal *** study advocates the deployment of integrated pyrolysis,anaerobic digestion,pyrolysis,and gasification technologies will ensure scalability,decomposition of recalcitrant feedstocks,and generation of high grade green *** outlook provides suggestions for future research into cost-saving and sustainable integrated technologies for green hydrogen production towards achieving carbon neutrality and a circular bio-economy.

关键词： Crop residues carbon neutrality pyrolysis gasification green hydrogen thermochemical conversion

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Suitability of Some Selected Clay Deposit from Edo, Ogun, Ondo and Ekiti State of Nigeria for Ceramic Water Filters Production

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Journal of Minerals and Materials Characterization and Engineering 2016年第1期4卷 26-32页

作者： Smart adeleye Olubayode Olufiropo samson Awokola Enoch Olugbenga Dare Olubayo Timothy Olateju Department of Civil Engineering University of Agriculture Abeokuta Nigeria Engineering Materials Development Institute Akure Nigeria Department of Chemistry University of Agriculture Abeokuta Nigeria

This study is designed to investigate the suitability of selected Nigeria clay deposit for clay based ceramic water filters (CWFs). Clay samples were taken from five randomly selected locations in Nigeria Namely: Okpella (Edo1) and Ojirami (Edo2) in Edo;Ikere in Ekiti state;FUTA in Ondo state and Onibode in Ogun to determine their suitability for clay based ceramic water filters (CWFs). Experimental analysis for linear shrinkage, water absorption, bulk density, compressive strength X-ray diffraction (XRD) and X-ray Fluorescence (XRF) was carried out on each of the clay samples. Test results reveal that all the clays contain high contents of alumina (Al2O3) and silica (SiO2) with minor contents of P2O5, Fe2O3, MgO, K2O, MnO and TiO2. The average crystal sizes of the clay were between 15 and 27 nm. Lattice structure indicates that the sample is Monoclinic and Anorthic. Ceramic water filters (CWFs) were made from a mixture of clay and sawdust at different volume ratios, and processed into test samples. Water absorption, linear shrinkage and compressive strength of the clay based ceramic filters (CWFs), reveal that as the volume ratio of sawdust increases these properties decrease. Flow rate analysis indicates that Edo and Ekiti ceramic water filters (CWFs) have higher flow rates. The research indicates that Edo and Ekiti Clay with specification of some industrial clays shows that the samples can be recommended for use in clay based ceramic water filters production.

关键词： Ceramic Water Filters X-Ray Diffraction (XRD) X-Ray Fluorescence (XRF) Clay

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