Department Environmental Engineering, Rajamangala University of Technology Lanna, 128 Hauykeaw Rd., Muang, Chaingmai 50300, Thailand.
Bioresour Technol. 2010 Jun;101(12):4484-90. doi: 10.1016/j.biortech.2010.01.116. Epub 2010 Feb 18.
New granular material from clay residue was investigated as a bulking agent for food waste composting. Five mixing ratios of granule were conducted in a laboratory scale reactor at the desired low rate of air (0.05 l min(-1)). The evolution of temperature and the accumulative CO(2) emissions were monitored. Physical and chemical changes, N loss, and organic matter degradation of compost were also examined. Adoption of granules of 15% V/V (FAS 31.6%) enhanced the thermophilic composting and CO(2) emissions; thus satisfying the Process to Further Reduce Pathogens (PFRP, USEPA) as well as obtaining the highest rate constant of organic matter degradation (k=0.005 day(-1)). As the amount of granules was doubled (35% V/V), the temperature was not only cooled, but also promoted the substantial N loss (54%). It was suggested that bulking agent from clay residue can be used beneficially as reusable media for microbial inoculation as analyzed by SEM.
研究了一种新型的来自粘土残渣的颗粒状物质，将其作为一种膨松剂用于食品废物堆肥。在实验室规模的反应器中，以所需的低空气流速（0.05 l min(-1))进行了五种颗粒混合比的实验。监测了温度的演变和累积的 CO(2)排放。还检查了堆肥的物理化学变化、氮损失和有机物降解。采用 15% V/V（FAS 31.6%）的颗粒可增强高温堆肥和 CO(2)排放，从而满足进一步减少病原体的过程（PFRP，USEPA），并获得最高的有机物降解速率常数（k=0.005 天(-1))。当颗粒的量增加一倍（35% V/V)时，不仅温度降低，而且还促进了大量的氮损失（54%）。通过 SEM 分析表明，粘土残渣的膨松剂可用作微生物接种的可重复使用的介质，具有有益效果。
