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首页> 外文期刊>Energy, Ecology and Environment >Pyrolysis kinetics and physicochemical characteristics of skin, husk, and shell from green coconut wastes
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Pyrolysis kinetics and physicochemical characteristics of skin, husk, and shell from green coconut wastes

机译：热解动力学和物理化学皮肤的特点、外壳和外壳绿椰子废弃物

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摘要

The green coconut (Cocus nucifera) is widely consumed in the world; however, its processing generates a large amount of waste, which presents a high energetic potential. The coconut waste is composed of skin, husk, and shell, where each part can be showing different physicochemical and thermal characteristics. Thus, this study presents the physicochemical and thermal characteristics of skin, husk, and shell of green coconut waste. The physicochemical behavior was evaluated by proximate analysis and ultimate analysis, while the thermal behavior was evaluated by thermogravimetric analysis under five different heating rates (5, 10, 15, 20, and 30 °C min-1). In addition, from the thermogravimetric data was evaluated the activation energy (Ea) by usingFriedman and Ozawa-Flynn-Wall (OFW) methods. The physicochemical and thermal characteristics presented by each part of the coconut indicate that the material can be used completely due to the great similarity between the heating value of each part of thecoconut (HHVskin = 18.98 MJ kg-1, HHVhusk = 18.15 MJ kg-1, and HHVshell = 18.64 MJ kg- 1), although they different contents of moisture and ash. A different thermal behavior of each part of the coconut was also observed, being associated with the possibility of different components in its structures, which directly influences the Ea value. Based on the Ea values, the husk shows a better applicability for pyrolysis process, due to lower energy required per mol of biomass.
机译：绿椰子(柯库椰子)是广泛的世界上消耗;产生大量的垃圾,这礼物高活力的潜力。由皮肤、外壳和外壳,每个地方可以显示不同的物理化学和部分热特性。提出了物理化学和热皮肤的特点、外壳和外壳的绿色椰子废弃物。近似分析和最终评估分析,而热行为由热重量分析评估五个不同的加热率(5、10、15、20和30°C最低为1)。热重数据评估由usingFriedman和活化能(Ea)Ozawa-Flynn-Wall (OFW)方法。物理化学和热特性椰子的每个部分提供的指示可以使用的材料完全由于伟大的热值之间的相似性每一部分thecoconut (MJ HHVskin = 18.98公斤,kg - 1),尽管他们不同的内容水分和灰尘。椰子也观察到,的每个部分与不同的可能性组件的结构,它直接Ea的价值的影响。皮显示更好的适用性热解过程中,由于较低的能量每摩尔的生物量。

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