利用废水处理产生的污水污泥和木屑的共同碳化作用生产可持续燃料压块，将其作为一种可持续的供热固体燃料

Q1 Social Sciences

South African Journal of Chemical Engineering Pub Date : 2024-10-01 DOI:10.1016/j.sajce.2024.09.011

William Owusu Oduro , Elizabeth Von-Kiti , Maame Adwoa Bentumah Animpong , Kofi Ampomah-Benefo , Gloria Boafo-Mensah , Eunice Dazugo , Isaac Kofi Yankson , Gordon Akon-Yamga , Ahmed Issahaku , Dennis Ofori-Amanfo

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引用次数: 0

摘要

干燥的污水污泥是一种用于工业窑炉的有吸引力的生物质燃料，因为其可获得性、可负担性以及对改善液体废物处理厂的共生可持续循环性具有积极作用。该研究调查了利用污水污泥生产的生物炭作为加热能源的燃料特性（效率、环境和人体安全），并利用水沸腾试验法和 X 射线荧光光谱法将其燃料性能与利用木材生产的木炭进行了比较。在燃烧速率（10.51 克/分钟）、燃料消耗量（107.13 克/升）以及 CO（59.64 克/千克-1 燃料）和 PM2.5 （4.76 克/千克-1 燃料）排放水平方面，碳化污泥和木屑比例相等的生物炭块是一种质量上乘的固体燃料。这种燃料与加纳使用的其他生物质燃料相比毫不逊色。此外，在通风良好的烹饪环境中使用生物炭燃料时，空气质量指数（35.23）较低，不会对环境和人类健康造成不利影响，而且在土壤中处理残留灰烬中的重金属时，显示出较低的潜在生态风险（121.54）。生产中的正能量平衡（2.35 兆焦/千克）显示了潜在的碳节约。

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Production of sustainable fuel briquettes from the co-carbonization of sewage sludge derived from wastewater treatment and wood shavings as a sustainable solid fuel for heating energy

Dried sewage sludge is an appealing biomass fuel for industrial kilns, because of its availability, affordability and has a positive effect on improving the symbiotic sustainable circularity of liquid waste treatment plants. The study investigated the fuel characteristics (efficiency, environmental and human safety) of biochar produced from sewage sludge for utilization as heating energy and compared the fuel performance to charcoal produced from wood sources using the Water Boiling Test method and X-ray Fluorescence Spectroscopy. Biochar briquette with equal ratio of carbonized sludge and wood shavings grants a solid fuel with good quality in terms of the burning rate (10.51 g/min.), specific fuel consumption (107.13 g/l) and emission levels of CO (59.64 g kg^-1 of fuel) and PM_2.5 (4.76 g kg^-1 of fuel). This fuel compared favourably with other biomass fuels used in Ghana. Also, no adverse impact on the environment and human health was observed in the use of the biochar with the low air quality index (35.23) recorded when the fuel is used in a well-ventilated cooking environment as well as showed low potential ecological risk (121.54) in terms of the heavy metals in the residual ash when disposed of in the soil. The positive energy balance (2.35 MJ/kg) of the production is indicative the potential carbon savings.

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来源期刊

South African Journal of Chemical Engineering Social Sciences-Education

CiteScore

8.40

自引率

0.00%

发文量

100

审稿时长

33 weeks

期刊介绍： The journal has a particular interest in publishing papers on the unique issues facing chemical engineering taking place in countries that are rich in resources but face specific technical and societal challenges, which require detailed knowledge of local conditions to address. Core topic areas are: Environmental process engineering • treatment and handling of waste and pollutants • the abatement of pollution, environmental process control • cleaner technologies • waste minimization • environmental chemical engineering • water treatment Reaction Engineering • modelling and simulation of reactors • transport phenomena within reacting systems • fluidization technology • reactor design Separation technologies • classic separations • novel separations Process and materials synthesis • novel synthesis of materials or processes, including but not limited to nanotechnology, ceramics, etc. Metallurgical process engineering and coal technology • novel developments related to the minerals beneficiation industry • coal technology Chemical engineering education • guides to good practice • novel approaches to learning • education beyond university.