Effect of bulking agents on maturity and gaseous emissions during kitchen waste composting.
Effect of bulking agents on maturity and gaseous emissions during kitchen waste composting.
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DOI：
10.1016/j.chemosphere.2013.07.002
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发表时间：
2013-10
期刊：
影响因子：
8.8
通讯作者：
Fan Yang;G. Li;Q. Yang;Wenhai Luo
中科院分区：
文献类型：
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作者：
Fan Yang;G. Li;Q. Yang;Wenhai Luo
研究了不同填充剂对厨余垃圾堆肥腐熟度和气体排放的影响。三种不同的膨胀剂（玉米秸秆，锯末，和废蘑菇基板）被用来堆肥餐厨垃圾在好氧条件下在60 L的反应器为28天的时间。还研究了使用不含膨胀剂的厨房废物的对照处理。在实验过程中，成熟度指标，如温度，pH值，C/N比，发芽指数进行了测定，并采取了连续测量的渗滤液和气体排放量（CH 4，N2 O，NH3）。结果表明，添加膨胀剂的堆肥均达到腐熟度要求，其中添加菌糠的堆肥腐熟度最高（C/N比从23降低到16，发芽指数从53%提高到111%）。填充剂还减少了渗滤液的产生和CH 4和N2 O的排放，但对NH3的排放影响不大。与其他处理相比，以锯末作为填充剂的堆肥排放的温室气体总量（33 kg CO2-eq t-1干物质）较少。
This study investigated the effect of bulking agents on the maturity and gaseous emissions of composting kitchen waste. Three different bulking agents (cornstalks, sawdust, and spent mushroom substrate) were used to compost kitchen waste under aerobic conditions in 60-L reactors for a 28-d period. A control treatment was also studied using kitchen waste without a bulking agent. During the experiment, maturity indexes such as temperature, pH value, C/N ratio, and germination index were determined, and continuous measurements of leachate and gaseous emissions (CH4, N2O, and NH3) were taken. The results showed that all of the composts with bulking agents reached the required maturity standard, and the addition of spent mushroom substrate gave the highest maturity (C/N ratio decreased from 23 to 16 and germination index increased from 53% to 111%). The bulking agents also reduced leachate production and CH4and N2O emissions, but had little impact on NH3emissions. Composting with sawdust as a bulking agent was found to emit less total greenhouse gas (33 kg CO2-eq t−1dry matter) than the other treatments.