利用等离子体技术彻底消除贮存牲畜粪便中甲烷的形成

Magnus Nyvold, Peter Dörsch
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引用次数: 0

摘要

等离子体固氮最近被证明适用于粪肥管理领域,因为它能够减少氨氮损失,提高有机废物的含氮量,只需输入空气和电力。此外,等离子体处理还具有抗菌特性,我们假设这种特性可以转移到甲烷古菌中,从而防止粪便储存过程中甲烷的形成--甲烷是全球人为温室气体排放的主要来源。在这项工作中,我们将牛粪中甲烷的形成与富氮牛粪中甲烷的形成进行了比较,富氮牛粪连续三年在两个室外储粪池中存放了 70-80 个夏日。在所有情况下,甲烷的形成都被完全消除。为了研究抑制的原因,进行了一项对照培养实验,结果表明,无论是酸化还是单独或同时添加硝酸盐或亚硝酸盐,都不能解释等离子体处理的牛粪在中等 pH 值条件下发生的甲烷生成和反硝化作用受到抑制的原因。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Complete elimination of methane formation in stored livestock manure using plasma technology
Plasma-based nitrogen fixation has recently been shown to be applicable in the domain of manure management, as it has the ability to reduce ammoniacal nitrogen losses and increase the nitrogen content of organic wastes, with air and electricity as the only input. In addition, the plasma treatment confers antimicrobial properties, which we hypothesize to be transferable to methanogenic archaea and hence prevent methane formation during manure storage – a major contributor to global anthropogenic greenhouse gas emissions. In this work we compared the methane formation from cow manure to the methane formation in nitrogen enriched cow manure, kept in two outdoor storage tanks for 70–80 summer days over three consecutive years. In all instances, the methane formation was eliminated completely. To investigate the cause of inhibition, a controlled incubation experiment was conducted to show that neither the acidification nor the addition of nitrate or nitrite, alone or in combination, could explain the inhibition of methanogenesis and denitrification that occurred in plasma treated cow manure at moderate pH.
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