猴面包树果废球团的优选及球团参数的优化

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy Pub Date : 2025-05-03 DOI:10.1016/j.biombioe.2025.107948

Jacinta Njuguna , Francis Njoka , Esther Nthiga

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引用次数: 0

摘要

猴面包树（adanonia digitata）是一种沙漠植物，在生产的果实废物中含水量很少，这使得它们的管理成为一个挑战。以猴面包树果为原料，制备了单粒和共粒的废燃料球团，分析了其理化特性，研究了水分含量和混合比例对球团容重、高热值（HHV）和球团耐久性指数（PDI）的影响。在果壳（FS）和榨饼（PC）按不同重量比例混合的情况下，通过改变生物质水分水平来研究水分含量的影响。颗粒是使用手工制造的液压机颗粒机生产的。采用近似分析和极限分析对颗粒的理化特性进行了研究。采用响应面法（RSM）研究了含水率和混合比对球团容重、HHV和PDI的综合影响。结果表明，FS、PC及其共制球团的含水率为7.94% ~ 9.89%，挥发物含量为64.94% ~ 73.20%，固定碳含量为17.08% ~ 21.61%。最终分析表明，共制球团的碳、氢含量较高，硫、氮含量明显较低。水分水平的增加对颗粒的体积密度、HHV和PDI有负面影响。RSM优化结果表明，最佳颗粒容重、HHV和PDI分别为736.70 kg/m3、21.03 MJ/kg和99.96%。这项工作揭示了利用猴面包树废物生产清洁能源在猴面包树废物价值链上的巨大潜力。

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Baobab fruit waste pellets and optimization of selected pelletization parameters

Baobab (Adansonia digitata) is a desert plant with very little water content in the produced fruit wastes, making their management a challenge. The aim of this study is to prepare single and co-pelletized baobab fruit waste fuel pellets, analyze their physio-chemical characteristics and study the effect of moisture content and mix ratios on pellet's bulk density, Higher Heating Value (HHV), and Pellet Durability Index (PDI). The effect of moisture content is investigated by varying the biomass moisture levels while fruit shells (FS) and press cake (PC) are mixed in the different ratios by weight. Pellets are produced using a manually-made hydraulic press pelleting machine. Proximate and ultimate analysis are used to study the physio-chemical characteristics of the pellets. Response Surface Methodology (RSM) is employed to study the combined effect of moisture content and mix ratios on pellet's bulk density, HHV and PDI. Results show that, the moisture content, volatile matter, and fixed carbon of FS, PC and their co-pellets ranged between 7.94 % and 9.89 %, 64.94 %–73.20 %, and 17.08 %–21.61 %, respectively. The ultimate analysis show that co-pelletized pellets have a higher carbon and hydrogen contents with significantly low sulfur and nitrogen contents. Increase in moisture levels has a negative impact on bulk density, HHV, and PDI of the pellets. RSM optimization showed that the optimum pellet's bulk density, HHV, and PDI were achieved as 736.70 kg/m³, 21.03 MJ/kg, and 99.96 %, respectively. This work reveals a great potential in baobab fruit wastes value chain addition by harnessing these waste materials for clean energy generation.

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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.