单 位：
黑龙江省水利水电勘测设计研究院;东北农业大学水利与建筑学院
关键词：
农村固体废弃物;好氧堆肥;胡敏酸;Fe3+矿物还原
摘 要：
堆肥胡敏酸作为农村固体废弃物资源化处置的重要产物,除具有保水保肥的功能外,还具有氧化还原特性。针对农村固体废弃物堆肥胡敏酸结构特性,进行了堆肥全过程胡敏酸结构演变对土壤Fe~(3+)矿物还原特性研究。结果表明,随堆肥进行,堆肥胡敏酸芳香化、腐殖化加剧,氧化还原功能基团、组分含量增加,可有效促进土壤Fe~(3+)矿物还原。醌基团是堆肥胡敏酸重要的氧化还原功能基团,堆肥中后期木质纤维素降解释放醌基团,经缩合作用与堆肥胡敏酸结合加速堆肥腐殖化进程,增强堆肥胡敏酸氧化还原性能,提升Fe~(3+)矿物还原能力。
译 名：
Structure Evolution of Compost-derived HAs from Rural Solid Waste and Corresponding Reduction of Fe~(3+) Mineral from Soil
作 者：
Fu Qiang;Yuan Ye;Cui Song;School of Water Conservancy and Civil Engineering,Northeast Agricultural University;Heilongjiang Provincial Water Conservancy and Hydropower Survey and Design Institute;
关键词：
rural solid waste;;aerobic compost;;HAs;;Fe3+ mineral reduction
摘 要：
Low efficiency of resource utilization of rural solid wastes resulted in more and more serious environmental pollution in rural areas. As a significant resource approach of rural solid wastes,compost has been widely used. Compost-derived HAs as the important products of solid waste compost were confirmed to be redox recently. Whether compost-derived HAs were similar to natural HAs to be able to promote the reduction of Fe~(3+)mineral was unclear. The rural solid wastes compost continued 40 d in an indoor composting reactor. Physical and chemical indexes changes during composting confirmed the successful rural solid waste compost. Spectra results of compost-derived HAs indicated that the aromaticity, humification and content of redox functional groups of compost-derived HAs were all increased during composting, which would facilitate the reduction of Fe~(3+)minerals. Specific UV absorbance values of compost-derived HAs demonstrated that quinones were the main redox functional groups within compost-derived HAs,which were mainly derived from the degradation of lignocellulose in compost materials in middle-and later-stage compost. Then these quinones would combine with the compost-derived HAs which would accelerate the humification of compost-derived HAs,increase their redox properties and the reduction of Fe~(3+)minerals and facilitate the degradation of organic contaminants in soil.
