处理马粪的堆肥桶的废气浓度和元素损失

IF 2 4区 农林科学 Q3 ECOLOGY Compost Science & Utilization Pub Date : 2020-01-02 DOI:10.1080/1065657X.2020.1749182
A. Løes, R. Khalil, Kirsty McKinnon
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引用次数: 1

摘要

摘要采用农场规模堆肥桶,对低碳氮比马粪和低碳氮比马粪与番茄残茬(TPR)混合产生的废气进行了研究。为了研究这种添加是否增加了氮(N)和硫(S)的气体损失,用傅里叶变换红外光谱(FTIR)对选定的碳(C)、氮(N)和二氧化硫(SO2)的气体化合物进行了三次测量。从桶内产气量(g / kg湿底物)和底物中C、N和S的含量,评估了C、N和S的元素损失。鼓内衬底的温度达到55-60℃。甲烷(CH4)产量随着平均滞留时间由2天增加到6.3天而增加。用TPR代替基质重量的50%,NH3的产量略有增加,但N2O、NO2和SO2的产量没有增加。我们没有发现添加TPR后C、N和S的损失增加,但NH3和SO2的产量波动更大。氧化亚氮(N2O)和甲烷的平均产量包括每千克湿基质15克二氧化碳当量,范围从8到27。氧化亚氮占80-90%。在三次气体测量中,鼓式处理使湿基质中的C含量降低了7-10%,N含量降低了约2%,S含量降低了0.2-1%。
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Exhaust Gas Concentrations and Elemental Losses from a Composting Drum Treating Horse Manure
Abstract A farm scale composting drum was used to study exhaust gases from horse manure, and from horse manure mixed with tomato plant residues (TPR) with a lower C/N ratio. To study whether this addition increased gaseous losses of nitrogen (N) and sulphur (S), selected gas compounds of carbon (C) and N, and sulphur dioxide (SO2), were measured on three dates by Fourier Transform Infrared spectroscopy (FTIR). From the gas production in the drum (g per kg wet substrate), and the content of C, N and S in substrates, elemental losses of C, N and S were assessed. Temperatures in the substrate inside the drum reached 55–60 °C. The production of methane (CH4) increased when the mean retention time increased from about 2 to 6.3 days. Replacing 50% of the substrate weight by TPR slightly increased the production of NH3, but not of N2O, NO2 or SO2. We did not find increased losses of C, N or S after addition of TPR, but the production of NH3 and SO2 fluctuated much more. The mean production of nitrous oxide (N2O) and CH4 comprised 15 g CO2 equivalents per kg wet substrate, ranging from 8 to 27. Nitrous oxide comprised 80–90%. Over three gas measurements, drum treatment reduced the C content in wet substrate by 7–10%, the N content by about 2% and the S content by 0.2–1%.
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来源期刊
Compost Science & Utilization
Compost Science & Utilization 农林科学-生态学
CiteScore
4.10
自引率
0.00%
发文量
0
审稿时长
>36 weeks
期刊介绍: 4 issues per year Compost Science & Utilization is currently abstracted/indexed in: CABI Agriculture & Environment Abstracts, CSA Biotechnology and Environmental Engineering Abstracts, EBSCOhost Abstracts, Elsevier Compendex and GEOBASE Abstracts, PubMed, ProQuest Science Abstracts, and Thomson Reuters Biological Abstracts and Science Citation Index
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