Abstract:Changes in the UV-visible and fluorescence characteristics of DOM from the co-composting process of municipal sludge with two types of biochars were discussed. The results showed the aromaticity and humification of DOM from the co-composting with biochars significantly increased compared with control, which indicated in favor of improving the maturity of compost. The treatment with biochar from peanut shell showed the highest maturity, followed by wheat straw biochar. After 21days, compost treated with biochar from peanut shell reached its maximum maturity, while that treated with biochar from wheat straw continued to increase over the whole time. Meanwhile, the DOM from the compost with or without treatment was found to be autochthonous, FI>0.7, BIX>0.8, mainly attributed to the microbial decomposition of compost. Thus, the spectral characteristics of DOM are capable of assessing the degree of maturity of compost during the co-composting process with biochars from different source.
闫金龙, 江韬, 赵秀兰, 魏世强, 王定勇, 李璐璐, 郭念, 孙文彬. 含生物质炭城市污泥堆肥中溶解性有机质的光谱特征[J]. 中国环境科学, 2014, 34(2): 459-465.
YAN Jin-Long, JIANG Tao, ZHAO Xiu-Lan, WEI Shi-Qiang, WANG Ding-Yong, LI Lu-Lu, GUO Nian, SUN Wen-Bin. Spectral characteristics of dissolved organic matter in co-composting process of municipal sludge with biochar. . CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(2): 459-465.