Results 11 to 20 of about 1,231,178 (148)
不同有机碳与无机氨氮比(C/N)下自养硝化生物膜上微生物菌群的变化
四川大学学报. 自然科学版, 2008 通过变性梯度凝胶电泳技术(DGGE)研究随有机碳与无机氨氮比(C/N)升高,自养硝化膜上微生物菌群结构的变化.实验结果表明随C/N升高,微生物菌群从以硝化细菌为主导到以反硝化细菌为主导,硝化过程也由仅硝化到同时硝化反硝化.主要的硝化菌是Nitro-somonas europaea和Nitrobactersp.,主要的反硝化菌是Pseudomonassp.,Acidovoraxsp.和Comamonassp..在高C/N时,尽管反硝化菌占多数,但硝化菌并没有消失,而是与反硝化菌同存.
刘强 +6 more
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, 2006 土壤硝化和反硝化作用是生态系统中氮循环的两个重要环节,是氮素损失的潜在途径,土壤硝化和反硝化作用可向大气中释放温室气体,由此带来环境危害。本文综述了国内外学者对土壤硝化和反硝化作用的研究现状,总结了土壤硝化和反硝化作用的研究方法及其影响因子。土壤硝化和反硝化作用是两个非常复杂的生态学过程,针对研究工作中存在的不足,提出建议:1)改进实验方法、加强对总硝化作用的研究;2)进一步探索森林生态系统中硝化和反硝化作用规律;3 ...
刘庆, 陈林武, 陈劲松, 刘义
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Gongye shui chuli, 2001 对影响亚硝化及反硝化生物脱氮的研究结果进行了总结和评述。内容包括游离氨、温度、pH、溶解氧、酚、氯酸钠等因素对亚硝化型硝化的影响,以及HNO2 对反硝化速率的影响和酚、氨在反硝化过程中充当电子供体的研究。
唐光临, 孙国新, 徐楚韶
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Piezocatalysis has garnered unprecedented research enthusiasm for applications in energy and environmental fields, as it can harvest the tiny vibration energy from the natural environment and convert it into electrical energy to drive catalytic reactions.
Feixue Gao +9 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The covalent bonds at heterojunction interfaces enable more efficient charge carrier separation than traditional weakly coupled heterojunctions, with enhanced photocatalytic performance for organic wastewater purification. The interfacial covalent bonds drive energy band reorganization, rendering the conventional independent band edge ...
Jing‐Yu Ren +5 more
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Gongye shui chuli, 2011 以人工模拟氨氮废水为研究对象,采用序批式活性污泥法,研究了实时控制条件下短程生物脱氮的实现及稳定性。结果表明:控制硝化过程中pH在7.7~8.6、DO在0.35~0.80 mg/L,经过24 d的运行,曝气结束时出水主要以亚硝酸盐为主。在此基础之上,逐渐提高曝气量、降低进水pH,短程硝化并没有被破坏,亚硝化率依然维持在70%以上。过度曝气6 d之后,硝化类型由亚硝化率为90.7%的短程硝化转变为亚硝化率为40.7%的全程硝化。
徐鹏, 何争光, 唐延杰, 安国安
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Metal oxide semiconductor‐supported noble metal nanoparticles are common sensing materials for gas sensors. However, the large size and their tendency to migrate at high temperatures often lead to inferior sensing sensitivity and stability. Herein, a salt‐assistant strategy is developed to prepare fully‐exposed Ir clusters on SnO2 nanorods ...
Yi Jiang +7 more
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Gongye shui chuli, 2022 二级出水中的氮、磷浓度虽较低，但污水排放量大，是造成水体富营养化的原因之一；且二级出水的碳氮比低，采用传统反硝化工艺无法达到脱氮除磷的需求。利用硫/铁硫化物自养反硝化深度处理污水是有必要的。阐述了自养反硝化菌利用硫/铁硫化物进行反硝化脱氮除磷的基本原理，以及反硝化菌用铁硫化物作电子供体的反应途径，论述了水力停留时间（HRT）、温度、pH对硫/铁硫化物自养反硝化过程的影响。研究表明：增加HRT可以提高硫/铁硫化物自养反硝化对氮、磷的去除率；反硝化菌群属于嗜温性菌，温度低于20 ℃明显抑制反硝化速率 ...
魏秋 +5 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT The electrocatalytic reduction of nitrate (NO3ER) has emerged as a promising strategy for mitigating NO3− ${{\text{NO}}_{3}}^{-}$ pollution in wastewater while concurrently producing value‐added ammonia; however, its process is significantly hindered by the lack of highly efficient and low‐cost electrocatalysts. Herein, we proposed several non‐
Xue‐Shi Song +5 more
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Functional Ecology, Volume 39, Issue 10, Page 2704-2716, October 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Moso bamboo (Phyllostachys edulis) invasions into broadleaf forests can cause serious ecological problems, such as reducing biodiversity and disrupting community succession.
Ting Zhou +5 more
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