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针-板电极脉冲放电处理含氰废水研究章英慧1,李胜利2(1.湖南省长沙市湖南城建职业技术学院湖南建筑高级技工学校2.华中科技大学)摘 要:采用针-板电极脉冲放电处理含氰废水,分别研究了溶液初始pH值,放电时间,气流量,气体种类及放电方式等试验条件对氰化物去除率的影响.试验结果表明:氰化物在pH值为9~10时去除率较高,且随着反应时间的延长,气流量的增加而增加,通入空气时氰化物的去除效果好于通入氮气时的去除效果.关键词:脉冲放电； 等离子体； 含氰废水......
" name="ChDivSummary">The enrichment of copper from copper–cyanide wastewater by solvent extraction was investigated using a quaternary ammonium salt as an extractant. The influences of important...Enrichment of copper and recycling of cyanide from copper–cyanide waste by solvent extractionTeng-yue Gao1,Kui-ren Liu1,Qing Han1,Bin-shi Xu21. Key Laboratory of Ecological Utilization of Multi-metal......
is an endothermic and spontaneous process. ZnO@NiO nanocrystal is an efficient sensor for removal of cyanide from water and wastewater. Key words: cyanide removal; nano crystal; adsorption; ZnO@NiO 1... sources of undesirable forms of cyanide ion wastewater. Cyanide compounds present in environmental matrices and waste streams as simple and complex cyanides, cyanates and nitriles [4]. Therefore......
Co-intensification of cyanide leaching gold by mercury ions and oxidant LI Qian(李 骞), JIANG Tao(姜 涛), YANG Yong-bin(杨永斌), LI Guang-hui(李光辉), GUO Yu-feng(郭宇峰), QIU Guan-zhou(邱冠周) School... that under low cyanide concentration, gold cyanide process is controlled by CN- transfer, while at higher cyanide concentration, there forms passivation on gold surface. Therefore, chemical oxidation......
] is the predominant mode in the treatment of cyanide-containing wastewater. However, it only works on free or weakly bound cyanide with harsh chemical conditions. Similarly, some other alternative treatments..., the complex nature of cyanide wastewater, primarily the high concentrations of cyanide, may seriously restrict their industrial application. Efficient thermal decomposition or destruction of cyanides......
活性炭催化臭氧化处理含氰废水的试验研究尚会建1,蒋梁鹤1,允川1,郑学明1,王亮1,杨丽艳1(1.河北省石家庄市河北科技大学化学与制药工程学院)摘 要:研究了活性炭催化臭氧化降解低质量浓度含氰废水,考察了臭氧投加量,活性炭用量,pH值等因素对处理效果的影响.试验结果表明:活性炭对臭氧有明显的催化作用,并可以提高臭氧的利用率;在CN-初始质量浓度150 mg/L,臭氧投加量30 mg/min,活性炭14 g/L,反应30 min条件下,CN-去除率为99.8%,相对于单独臭氧化过程CN-去除率有了显著提高;通过自......
J. Cent. South Univ. (2020) 27: 1495-1502 DOI: https://doi.org/10.1007/s11771-020-4385-z Dissolution of gold in chalcopyrite-containing cyanide solutions YANG Wei(杨玮)1, 2, ZHANG Kai(张凯)1, 2, WANG... and Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract: The gold dissolution in anoxic cyanide solution in the presence of chalcopyrite was studied with a rotating disc electrode......
Kai-wei, BAI Yun-long, XIE Feng, et al. Review on recovery technologies of cyanide-containing wastewater[J]. Nonferrous Metals (Extractive Metallurgy), 2020(4): 75-83. [8] 王 洋, 王宝山, 高慧娟, 等. 碱性氯化法处理某金矿..., 2020, 49(1): 69-72. [9] 万志鹏. 含氰废水处理研究进展[J]. 山东化工, 2019, 48(11): 34-35. WAN Zhi-peng. The research progress in treatment of cyanide-containing wastewater[J]. Shandong Chemical Industry, 2019, 48(11......
加压氰化液成分 Table 1 Chemical compositions of pressure cyanide solution of flotation concentrate 从表1可以看出,实验所用该浮选精矿加压氰化液主要由贵金属钯,铂及少量贱金属铁,钴,镍和铜构成. 实验所需设备如下:日本HITACHI公司生产的Z-2000型原子吸收光度计, 日本SHIMADZU公司生产... of pressure cyanide: China, CN102808084 B[P]. 2014-04-02. [5] ZHANG Chao, HUANG Kun, YU Pin-hua, LIU Hui-zhou. Salting-out induced three-liquid-phase separation of Pt(IV), Pd(II) and Rh(III) in system......
Treatment of nickel-ammonia complex ion-containing ammonia nitrogen wastewater MIN Xiao-bo(闵小波), ZHOU Min(周 敏), CHAI Li-yuan(柴立元), WANG Yun-yan(王云燕), SHU Yu-de(舒余德) School... wastewater in order to remove nickel and ammonia simultaneously in one technological process. The relationship among pH, the concentration of nickel ammonia complex ion and total ammonia concentration......
