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| 1 | 物料预处理对堆肥减量化、腐殖化和稳定化的影响及其微生物机制显示文摘堆肥是有机固体废弃物处理与资源化的主要途径之一,包括矿化和腐殖化两个过程,且都和微生物活动有关。矿化过程会产生二氧化碳(CO2)等温室气体,是一个典型的温室气体释放过程。腐殖化过程则会产生稳定的腐殖质,则是优良的土壤改良剂。在堆肥稳定化的前提下,如何有效减少堆肥过程中的CO2释放,强化堆肥的腐殖化过程,增加作为优良土壤改良剂的腐殖质产量,对于发展低碳化堆肥技术,实现堆肥的资源化利用具有重要意义。本文选取水稻秸秆和餐厨垃圾作为堆肥原料,研究不同预处理对堆肥过程中矿化和腐殖化过程的影响,并探讨了不同预处理影响矿化和腐殖化过程的微生物机理。结果表明堆料加热预处理后,堆肥的矿化作用被明显削弱,总碳(TC)减量率仅为23.4%,并且最后形成了可观产量的稳定腐殖质(每kg堆料70 d后腐殖质含量为22.09 g±0.35 g,腐殖化系数达2.0),因此加热预处理后的堆肥过程在保证稳定腐殖质的产量前提下更低碳化。预处理通过影响堆料的性质和初始状态下堆料中微生物的种类和数量从而影响堆肥的矿化和腐殖化过程。活性微生物量与脱氢酶活性是矿化过程的主要决定因素,而多酚氧化酶活性主要影响堆肥的稳定腐殖化过程。 | 张阅 王磊 陈金海 | 2015 | 工业微生物2015，45，1： | 14 |
| 2 | A chemometric analysis on the fluorescent dissolved organic matter in a full-scale sequencing batch reactor for municipal wastewater treatment显示文摘 | Chen Qian Wei Chen Wei-Hua Li Han-Qing Yu | 2017 | Frontiers of Environmental Science & Engineering2017，11，4： | 3 |
| 3 | 洞庭湖不同湖区水体DOM的荧光特征及来源显示文摘解析夏季洞庭湖不同湖区溶解性有机质(DOM)的来源、荧光特征及环境行为对湖泊水体污染来源监测、水环境污染防治及安全调水具有十分重要的意义。利用DOM Fluor工具运行平行因子分析模型(PARAFAC)与同步荧光光谱(SFS)和紫外荧光光谱(UV-Vis)结合探究夏季洞庭湖水体DOM来源及荧光特性。水体中DOM一共含有4类荧光组分:C1、C2(类富里酸),C3(类蛋白),C4(类胡敏酸)。其中,洞庭湖DOM以类富里酸物质(C1、C2)为主。地统计分析结合荧光光谱指数(FI、BIX、HIX)分析结果表明,洞庭湖水体DOM主要以内源输入为主,受结构性因素影响较为强烈,洞庭湖4类组分均为极显著正相关(P<0.01),说明洞庭湖东、南、西3个湖区联系密切,各湖区水体DOM具有较高同源性。东、南、西3个湖区的荧光组分与各水质参数的相关分析结果不尽相同,东洞庭湖水体DOM中较高的类腐殖质和类蛋白物质与丰水期干流水系、自然条件及周围人类活动息息相关。 | 马飞扬 樊团团 孙小平 明峻德 王世同 张英豪 姚昕 | 2021 | 生态环境学报2021，30，12： | 2 |
| 4 | Elevated methylmercury production in mercury-contaminated soil and its bioaccumulation in rice:key roles of algal decomposition显示文摘Algal-derived organic matter(AOM)regulates methylmercury(MeHg)fate in aquatic ecosystems,whereas its role in MeHg production and bioaccumulation in Hg-contaminated paddies is unclear.Pot and microcosm experiments were thus performed to understand the response characteristics of MeHg concentrations in soil and rice in different rice-growing periods to algal decomposition.Compared to the control,algal decomposition significantly increased soil water-soluble cysteine concentrations during the rice-tillering and grain-filling periods(P<0.05).It also significantly lowered the molecular weight of soil-dissolved organic matter(SDOM)during the rice-tillering period(P<0.05)and SDOM humification/aromaticity during the grain-filling period.Compared to the control,AOM input increased the abundance of potential Hg and non-Hg methylators in soil.Furthermore,it also greatly increased soil MeHg concentrations by 25.6%-80.2%and 12.6%-66.1%during the rice-tillering and grain-filling periods,with an average of 42.25%and 38.42%,respectively,which were significantly related to the elevated cysteine in soil and the decrease in SDOM molecular weight(P<0.01).In the early stage(within 10 days of microcosm experiments),the MeHg concentrations in decayed algal particles showed a great decrease(P<0.01),suggesting a potential MeHg source in soil.Ultimately,algal decomposition greatly increased the MeHg concentrations and bioaccumulation factors in rice grains,by 72.30%and 16.77%,respectively.Overall,algal decomposition in Hg-contaminated paddies is a non-negligible factor promoting MeHg accumulation in soil-rice systems. | Di Liu Yan Wang Tianrong He Deliang Yin Shouyang He Xian Zhou Yiyuan Xu Enxin Liu | 2023 | Frontiers of Environmental Science & Engineering2023，17，12： | 0 |
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