Results 1 to 10 of about 2,946 (84)
Gongye shui chuli, 2021 采用重铬酸钾法测定废水中的CODCr，其中的氯离子也会被重铬酸钾氧化，从而使测定结果产生正误差，氯离子含量越高误差越大。在现有标准分析方法（重铬酸钾法）的基础上进行改进，通过增加掩蔽剂的方式掩蔽高浓度的氯离子，采用快速密闭消解法测定高氯废水中的CODCr。采用改进方法测定CODCr标样（含氯离子质量分数8%），RSD分别为6.58%（n=10）、5.47%（n=8）和5.02%（n=8）；采用改进方法测定废水样品（含氯离子质量分数7.76%）和加标样，平均加标回收率为93.9%。经验证 ...
程龙军, 彭娟, 杨柳荫, 安晓英
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Gongye shui chuli, 2015 采用超高石灰铝法向含氯废水中添加氧化钙和偏铝酸钠,使钙离子、铝离子与氯离子形成不溶性的沉淀,达到去除氯离子的目的。考察了时间、温度、氧化钙添加量、偏铝酸钠添加量对溶液中氯离子去除的影响,结果表明:超高石灰铝法可以有效去除氯离子,当温度为40℃,搅拌时间为40 min,n(Ca):n(Al):n(Cl)为5:3:1时,氯离子去除率达到80.05%,石化废水处理后的氯离子质量浓度为193 mg/L,达到回用水要求氯离子低于200 mg/L的标准。
程志磊 +3 more
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Gongye shui chuli, 2020 冷却塔风吹损失的液滴携带较高浓度氯离子，排放至大气后会生成氯盐细颗粒物。通过对某燃煤电厂循环水系统的补水率、排污损失率、总溶解固形物浓缩倍率进行分析计算，得到风吹损失率是经验取值的2.6倍，冷却塔氯离子排放质量浓度折合烟气排放质量浓度为39.5 mg/m3，氯离子排放因子为138.5 mg/（kW·h），折合472.7 g/t标煤，推算出2018年全国火电厂冷却塔排放的氯离子量为46万t。火电厂普遍通过湿式通风冷却塔排放水溶性离子是大气污染物监管的一个漏洞。
苏跃进, 董宝林
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Gongye shui chuli, 2012 采用电化学法研究了循环水中304不锈钢点蚀电位(Eb)、蚀孔深度、蚀孔数量与氯离子浓度的关系。结果表明, 常温下304不锈钢的Eb总是随着氯离子浓度的增大而减小, 当氯离子质量浓度小于800 mg/L时, 增大氯离子浓度易导致点蚀敏感, 而大于该值时增大氯离子浓度不会明显增大点蚀倾向;从蚀孔深度和表面蚀孔数量得出的304不锈钢点蚀倾向由大变小的氯离子质量浓度阈值为770 mg/L。
刘艳飞, 郦和生, 谢文州, 杨玉
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Gongye shui chuli, 2011 探讨了用于高氯废水COD测定时消除氯离子影响的相关改进方法,认为对不同氯离子浓度和COD的水样可分别采用相应的方法。并对其中的分段测定法、氯耗氧曲线校正法进行了实验分析,得出氯离子质量浓度在2 000~15 000 mg/L、COD<200 mg/L时可用分段测定法;氯离子质量浓度在2 000~20 000 mg/L、COD>200 mg/L时可用氯耗氧曲线校正法。这两种方法都可以有效消除氯离子的干扰使结果准确度高、重复性好且操作方便、减少污染。而对氯离子质量浓度>20 000 mg ...
刘娟, 吴浩宇
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Controllable energy release in solid propellants has always been a challenging technology, and extensive efforts have been devoted to the synthesis and application of catalysts to achieve its controllable release. In this study, tannic acid (TA) and its complexes (TA‐Cu) were introduced into boron@ammonium perchlorate (B@AP) composites using ...
Yong Kou +12 more
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Gongye shui chuli, 2007 综述了有关氯离子对冷却水系统中不锈钢腐蚀研究的最新进展，涉及冷却水中氯离子引发不锈钢孔蚀、缝隙腐蚀和应力腐蚀开裂的机理，氯离子的限度，以及影响水中不锈钢腐蚀的其他因素。对如何应对冷却水中氯离子的负面效应提出了见解。
鲍其鼐
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Semiconductor photocatalysis represents a pivotal frontier in the quest for sustainable energy and environmental remediation. Among the diverse catalytic materials, Bismuth Oxychloride (BiOCl) has emerged as a particularly promising candidate due to its unique layered structure, featuring [Bi2O2]2+ layers intertwined with halogen ions, which ...
Liu Han +5 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The rapid advancement of 5G communication technology has intensified electromagnetic pollution, creating an urgent demand for flexible multifunctional fabrics with efficient electromagnetic interference (EMI) shielding performance. This study proposes a novel material‐stacked construction strategy to fabricate multifunctional MXene/cellulose ...
Zong‐Kai Yan +9 more
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A Green Anodic Electrolysis Strategy for Recovering Copper and Selenium From Cuprous Selenide
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Selenium, a rare strategic metal, is essential for advanced technologies and biological systems. Cuprous selenide (Cu2Se), a selenium‐rich compound found in copper anode slime and a promising thermoelectric material, holds great potential for recovery.
Jihua Li +7 more
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