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热解温度对畜禽粪便生物炭产率及理化特性的影响

DOI: 10.11654/jaes.2015.11.024

Keywords: 温度 畜禽粪便 生物炭 理化特性

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Abstract:

以鸡粪、猪粪渣和牛粪为原料,采用室内密闭低氧制备生物炭,研究不同温度(350、450、550、650、750 ℃)下,畜禽粪便生物炭的产率和理化特性.结果表明,随着热解温度的升高,畜禽粪便生物炭灰分、pH、电导率、盐分、全P和全K含量逐渐增加,而炭化产率、挥发分含量、固定碳产率、全N含量逐渐降低,同时生物炭表面超微结构粗糙程度加剧.综合分析确定,获得高炭化产率和低氮损失的适宜热解温度为450 ℃,该温度下生物炭品质优劣依次为牛粪、猪粪渣、鸡粪.畜禽粪便生物炭具有较高pH和总养分含量,可作为酸性土壤调理剂和有机肥生产辅料

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