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Evaluation and redesign of the primers for detecting nitrogen cycling genes in environments
Methods in Ecology and Evolution, Volume 13, Issue 9, Page 1976-1989, September 2022., 2022 Abstract A better understanding of how nitrogen (N) cycling genes are involved in ecological processes is one of the crucial areas of microbial ecology. Currently, most molecular biological techniques investigating N cycling genes in the environment heavily rely on the accuracy of the polymerase chain reaction (PCR) primers; however, their specificity ...
Zhujun Wang +12 more
wiley +1 more source
Gongye shui chuli, 2021 采用折点加氯法去除脱硫废水中的氨氮，通过响应面法考察了pH、n（Cl）/n（N）和初始氨氮浓度对氨氮去除效果的影响。结果表明，pH对出水氨氮浓度的线性效应显著，n（Cl）/n（N）和初始氨氮浓度对出水氨氮浓度的线性效应极显著。通过该方法可以得到不同初始氨氮浓度条件下，满足出水氨氮达标排放的pH和n（Cl）/n（N）。折点加氯可有效去除脱硫废水中的氨氮，出水氨氮满足《污水综合排放标准》（GB 8978—1996）中一级标准的要求。
胡大龙 +7 more
doaj +2 more sources
Gongye shui chuli, 2022 厌氧氨氧化是近20 a来逐步发展起来的一种高效、节能新型生物脱氮工艺，其无需消耗碳源且污泥产量低，是处理低碳氮比氨氮废水的较佳选择。对厌氧氨氧化工艺的基本原理、影响厌氧氨氧化细菌活性的常见因素作了简要介绍，阐述了厌氧氨氧化工艺用于污水处理的发展历程，引用部分案例对厌氧氨氧化工艺在低碳氮比废水处理中的应用状况进行了说明，指出其对于低碳氮比高浓度氨氮废水处理效果较好，但对于低碳氮比的中低浓度氨氮废水的处理存在技术瓶颈，即中低浓度氨氮废水难以实现稳定的亚硝化 ...
汪晓军, 陈永兴, 陈振国
doaj +2 more sources
Gongye shui chuli, 2016 采用海藻酸钠-氯化钙固定法固化硝化细菌和硝化细菌与小球藻的混合物，来处理养殖废水中的氨氮污染，考察了处理时间、温度、pH和氨氮/固化小球用量比对氨氮去除效果的影响。实验结果显示，固化硝化细菌小球和固化菌藻小球均能有效去除废水中的氨氮，但固化菌藻小球的去除效果更佳。在28℃、pH=8、氨氮起始质量浓度为50 mg/L、氨氮/固化菌藻小球用量比为1：40的实验条件下，24 h内能去除废水中96.51%的氨氮。实验结果证实，硝化细菌和小球藻具有一定的共生关系，在去除氨氮时有协同效应 ...
周鸣 +4 more
doaj +2 more sources
Atomically Thin Sn:GaN‐GaN Homojunction for High‐Sensitivity β‐Ray Detection
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Gallium nitride (GaN), a third‐generation wide‐bandgap semiconductor renowned for its superior radiation tolerance, holds promise for advanced β‐ray detection. Herein, a scalable liquid metal‐assisted in situ synthesis method is presented to fabricate Sn‐doped GaN homojunctions via gallium oxide printing followed by ammonolysis, enabling ...
Weiqing Liu +8 more
wiley +1 more source
Electrolyte With Functionalized Boron Nitride Nanosheets for Dendrite‐Free Lithium Metal Anodes
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Lithium metal batteries (LMBs) are regarded as promising candidates for the next‐generation high‐energy‐density storage systems due to their unparalleled theoretical energy density and low redox potential. However, the commercialization of LMBs is tremendously plagued by the barbaric growth of lithium dendrite and the intricate decomposition ...
Ji Zhou +5 more
wiley +1 more source
Gongye shui chuli, 2012 采用氯化锌活化法制备柚皮活性炭,探讨其对废水中氨氮的吸附性能。结果表明,在pH为2～12,温度为30～50℃条件下,柚皮活性炭对氨氮均能取得较好的吸附效果;相同氨氮初始浓度条件下,随着投加量增加,单位质量柚皮活性炭对氨氮的吸附量明显减少;初始氨氮浓度越大,氨氮吸附量也越大。吸附数值遵循Henry及Freundlich等温吸附模型,吸附过程符合准二级动力学方程。
张华 +5 more
doaj +2 more sources
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Periodontitis is a chronic infectious oral disease triggered by periodontopathogenic bacteria, resulting in the progressive inflammation and destruction of the tissues surrounding teeth. To achieve reprogramming of the infectious microenvironment for periodontitis therapy, a nanoformulation was proposed by loading polydopamine (PDA) with ...
Hao Liang +14 more
wiley +1 more source
Gongye shui chuli, 2010 针对化肥企业氨氮废水排放量大、污染物浓度高的特点,采用高效串联-改进式曝气生物滤池(BAF)对化肥氨氮废水进行了处理及耐冲击负荷试验研究。试验结果表明,高效串联-改进式BAF可以将200mg/L左右的进水氨氮处理至出水>5mg/L。同时对突发高氨氮负荷或低氨氮负荷缓冲能力较强,对高氨氮、高COD负荷进水,通过补充高效菌种,可以达到较高去除率。
赵慧 +6 more
doaj +2 more sources
Gongye shui chuli, 2019 天然气和页岩气开采废水含盐高、含氨氮和易挥发有机物也较高，现有方法脱氨氮处理效果不佳。利用氨与水分子相对挥发度的差异，研制出针对高含盐废水的脱氨氮技术及装置。通过试验验证，可有效分离高含盐废水中的氨氮，最终实现产出水回用或达标排放，解决了天然气和页岩气高含盐开采废水氨氮的脱除问题，并可进一步推广应用于其他含盐含氨氮废水处理领域。
符宇航 +7 more
doaj +2 more sources