Optimization of density and durability of pellets using the response surface methodology in ultrasonic vibration-assisted pelleting of corn stover

IF 2.6 3区 农林科学 Q1 Agricultural and Biological Sciences Scientia Agricola Pub Date : 2023-07-07 DOI:10.1590/1678-992x-2022-0243
Wentao Li, Chenxi Li, Bo Zhang, Guixia Zhou, Dan Liu
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Abstract

: Top-quality pellets can significantly increase density and durability of agricultural residues, reducing logistic costs. However, these pellets depend on numerous parameters, including feedstock properties and production conditions. To ensure high-quality pellets, a single-factor experiment and the response surface methodology were used to investigate the effects of particle size, moisture content, molding pressure, pelleting time, ultrasonic power, and interaction effects between variables on density and durability of pellets for ultrasonic vibration-assisted pelleting of corn stover. The response surface models between variables and response were established. The results showed that all variables affect the density and durability of pellets. An optimal condition for density and durability was obtained, and a further experiment was conducted to validate the values. The results suggested that desirability (0.999) under optimal conditions confirmed the validation of models. The optimal combination of process parameters included particle size of 1.5 mm, moisture content of 10 %, molding pressure of 379 kPa, pelleting time of 80 s, ultrasonic power of 250 W, with values of 1,381.14 kg m –3 and 97.58 % for density and durability of pellets, respectively.
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利用响应面法优化超声振动辅助玉米秸秆制粒的密度和耐久性
:高品质的颗粒可以显著提高农业残留物的密度和持久性,降低物流成本。然而,这些颗粒取决于许多参数,包括原料特性和生产条件。为保证球团质量,采用单因素试验和响应面法,研究了粒径、含水率、成型压力、球团时间、超声功率等因素对玉米秸秆超声振动辅助球团密度和耐久性的影响,以及各因素之间的交互作用。建立了变量与响应之间的响应面模型。结果表明,各变量均影响颗粒的密度和耐久性。得到了密度和耐久性的最佳条件,并进行了进一步的试验验证。结果表明,最优条件下的理想度为0.999,验证了模型的有效性。最佳工艺参数为:粒径为1.5 mm,含水率为10%,成型压力为379 kPa,制粒时间为80 s,超声功率为250 W,制粒密度为1,381.14 kg m -3,制粒耐久性为97.58%。
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来源期刊
Scientia Agricola
Scientia Agricola 农林科学-农业综合
CiteScore
5.10
自引率
3.80%
发文量
78
审稿时长
18-36 weeks
期刊介绍: Scientia Agricola is a journal of the University of São Paulo edited at the Luiz de Queiroz campus in Piracicaba, a city in São Paulo state, southeastern Brazil. Scientia Agricola publishes original articles which contribute to the advancement of the agricultural, environmental and biological sciences.
期刊最新文献
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