这项研究检查了农业残留物的热解,即,椰子壳,稻壳,还有牛粪,在垂直固定床反应器中,在300至800摄氏度的不同温度下生产生物炭。该研究旨在评估生物炭作为生物燃料的潜力,吸附剂,和土壤改良剂。邻近,最终,并进行元素分析以确定其组成和热量值。几种分析技术被用于生物炭的物理和化学表征(SEM,FTIR,BET)。结果表明,在不同条件下,每种生物炭的SBET值最高:BC-CS-700为89.58m2/g,BC-RH-600为202.39m2/g,BC-CD-800为42.45m2/g。此外,所有三种生物炭在600°C时都表现出最高的热值。结果表明,600°C是由各种生物质材料生产生物炭的最佳温度,考虑到它们用于各种目的。BC-CS-800的元素碳含量最高,为93%,伴随着氧含量的相对降低。生物炭产品的vanKrevelen图表明,从椰子壳和稻壳中提取的生物炭适合用作燃料。此外,FTIR分析显示生物炭表面存在含氧官能团,增强其污染物吸附能力。这项研究为生物炭的可扩展和环境可持续生产提供了有价值的见解,强调其在改善土壤质量方面的作用,增加能量密度,支持可持续农业实践。
This study examines the pyrolysis of agricultural residues, namely, coconut shells, rice husks, and cattle manure, in a vertical fixed-bed reactor at varying temperatures from 300 to 800 degrees Celsius for biochar production. The research aimed to evaluate the potential of biochar as biofuels, adsorbents, and soil amendments. Proximate, ultimate, and elemental analyses were conducted to determine their composition and caloric values. Several analytical techniques were used in the physical and chemical characterization of the biochar (SEM, FTIR, BET). The results indicated that the highest SBET values were achieved under different conditions for each biochar: 89.58 m2/g for BC-CS-700, 202.39 m2/g for BC-RH-600, and 42.45 m2/g for BC-CD-800. Additionally, all three biochars exhibited the highest caloric values at 600 °C. The results showed that 600 °C is the general optimal temperature to produce biochar from an assortment of biomass materials, considering their use for a variety of purposes. BC-CS-800 had the highest elemental carbon content at 93%, accompanied by a relative decrease in oxygen content. The van Krevelen diagram of biochar products shows that biochars derived from coconut shells and rice husks are suitable for use as fuels. Furthermore, FTIR analysis revealed the presence of oxygen-containing functional groups on the biochar surface, enhancing their pollutant adsorption capabilities. This study provides valuable insights into the scalable and environmentally sustainable production of biochar, emphasizing its role in improving soil quality, increasing energy density, and supporting sustainable agricultural practices.