Results 11 to 20 of about 1,295 (102)
Gongye shui chuli, 2022 由于我国污水处理厂进水碳源不足，传统生物脱氮技术需补充碳源以满足脱氮要求，这额外增加了碳足迹和碳排放。碳中和背景下，低碳生物脱氮技术的发展为脱氮技术革新提供了基础。基于此，首先系统介绍了传统生物脱氮技术的原理及对应的功能微生物，分析了传统技术存在的问题；针对传统生物脱氮技术，提出添加新型碳源、调整工艺运行和挖掘内碳源等途径来提升脱氮效率。概述了几种低碳脱氮技术（短程硝化反硝化、同步硝化反硝化、厌氧氨氧化、微生物电化学技术）的工艺特点和创新原理，并与传统工艺进行了比对 ...
李瑞祥, 王鑫, 李田
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Alkali metal–chalcogen batteries (AMCBs) are one of the most promising next‐generation energy storage systems because of their high energy density and reasonably low cost. However, the practical application of AMCBs is severely hindered by the volume expansion of the chalcogen cathode, the shuttle effect of polychalcogenides, and unstable ...
Yong Liu +11 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Platinum (Pt)‐based catalysts are crucial for the commercialization of hydrogen/metal air batteries, but they suffer from Pt scarcity, high cost, and nanoparticle dissolution/agglomeration, mainly leading to performance degradation. We address this by synthesizing a PtFe alloy catalyst (PtFe–PA–NC) via a phytic acid (PA) assisted pyrolysis ...
Chenyang Shu +9 more
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Gongye shui chuli, 2013 人工快速渗滤系统在小城镇污水处理中具有重要的应用价值,但存在总氮去除率偏低的问题,强化硝态氮的反硝化是解决这一问题的关键。国内外针对反硝化系统及人工快速渗滤系统的研究表明,改善反硝化细菌特性、添加碳源、优化碳氮比和湿干比、增设饱水层是解决总氮去除率较低的有效方法。
刘光英, 张焕祯, 张鑫, 李伟
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Emerging as attractive alternatives for sustainable, low‐cost, and high‐performance electromagnetic interference (EMI) shielding, biomass‐derived carbon is nonetheless constrained by a limited repertoire of shielding mechanisms. Herein, a straightforward method was employed to synthesize self‐supporting Co nanoparticles embedded in porous N ...
Yingjie Xu +6 more
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Gongye shui chuli, 2023 投加缓释碳源是降低低碳氮比废水总氮（TN）的有效途径。使用聚己内酯（PCL）、玉米芯（CC）和二价铁盐（FeSO4、FeCl2）为电子供体，以聚乙烯醇和海藻酸钠为骨架，经过化学交联制备了PCL-CC基质（PC）、PCL-CC-FeSO4基质（PCF-S）和PCL-CC-FeCl2基质（PCF-C） 3种固体缓释碳源，构建了铁-碳协同脱氮除磷的反硝化滤池，并将其用于处理模拟废水，比较了PC、PCF-S和PCF-C在连续流反硝化滤池中的有机物释放特性与其强化脱氮除磷的性能。结果表明：PC、PCF-S和PCF-
于鲁冀 +6 more
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Shuitu Baochi Xuebao, 2017 基于2 a田间试验，研究了地膜覆盖对旱作春玉米田土壤有机碳、全氮及其组分的影响，试验包括地膜覆盖玉米田、无覆盖玉米田和裸地休闲3个处理，分层测定了0—40 cm土层有机碳、全氮、颗粒有机碳氮、潜在矿化碳氮和微生物量碳氮含量。结果表明：在0—40 cm土层，各处理间土壤有机碳和全氮含量均无显著差异。与不覆盖相比，地膜覆盖处理0—40 cm土层颗粒有机碳氮及其所占比例分别降低了29.0%，33.3%，29.9%，35.7%；0—10 cm土层潜在矿化碳及其所占比例分别降低了17.8%和16.1 ...
付 鑫, 王 俊, 赵丹丹
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退化马尾松林恢复过程中芒萁覆盖对土壤微生物生物量碳氮及其周转的影响
Shuitu Baochi Xuebao, 2023 为探究侵蚀退化红壤马尾松林恢复过程中林下芒萁对土壤微生物生物量碳氮月动态及其周转的影响,以不同恢复年限的马尾松林为研究对象,对比分析马尾松林恢复过程中林下保留芒萁、去除芒萁处理和林下裸地土壤中12个月的土壤微生物生物量碳(MBC)和微生物量氮(MBN)含量及其周转速率、周转时间和流通量,并分析其与土壤理化性状的关系。结果表明:(1)保留芒萁覆盖处理的MBC和MBN平均含量分布比林下裸地提高26.99%~277.31%和13.54%~173.39%,而去除芒萁处理分布比保留芒萁处理降低12.29%~27 ...
苏浩浩 +4 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Ni3S2 has emerged as a promising catalyst for the electrochemical oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid (FDCA), driven by its distinctive physicochemical properties. However, its practical catalytic efficiency is severely hindered by abundant electrochemically inactive surface sites and poor ...
Cheng‐Feng Yi +5 more
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Gongye shui chuli, 2007 对低碳源条件下反硝化同步除磷脱氮的影响因素进行了研究。结果表明，在低碳源情况下，硝基氮的消耗与磷的吸收呈线性关系，在厌氧段维持合适硝基氮与磷的质量比，可较好地实现同步去除氮磷，而污泥泥龄控制不当则影响反硝化除磷的效果。
汤兵, 王五洲, 石太宏
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