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排序方式: 共有294条查询结果,搜索用时 31 毫秒
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Gomez Mario Alberto Ma Xu Chen Yiwen Wang Shaofeng Pollastri Simone Aquilanti Giuliana Cui Yubo Yao Shuhua Xiao Tangfu 《Environmental Chemistry Letters》2023,21(5):2519-2523
Environmental Chemistry Letters - Wastewater from the uranium mining industry contains toxic arsenate (AsO43–), selenate (SeO42–), and molybdate (MoO42–) that can be removed by... 相似文献
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Wang Feng Gao Changhai Ou Qi 《Environmental science and pollution research international》2021,28(5):5296-5315
Environmental Science and Pollution Research - The consumption of fossil energy is the major cause of environmental pollution. Effectively reducing the fossil energy use has important significance... 相似文献
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在研究分析葫芦岛有色金属集团近年来废气治理情况的基础上,根据葫芦岛市工业区环境空气质量监测数据,通过环境空气综合污染指数评价和Spearman秩相关系数评价,分析了废气治理对环境空气质量的影响. 相似文献
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本文对目前研究最多的汞、铬、镉、铅和砷等重金属,详细分析了它们在水体中的迁移转化、价态变化、吸附与解吸附作用、吸附和共沉淀作用等动态过程;简要地阐述五种重金属对水体的污染给人体带来的危害;重点讨论了对水体重金属污染采取控制与消除土壤污染源、含重金属工业废水的排放和生物修复技术等防治对策。 相似文献
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Removal of phosphate from wastewater using alkaline residue 总被引:2,自引:0,他引:2
Yubo Yan Xiaodong Liu Xiuyun Sun Fangbian M Lianjun Wang Jiansheng Li Jinyou Shen 《环境科学学报(英文版)》2014,26(5):970-980
Alkaline residue(AR) was found to be an efficient adsorbent for phosphate removal from wastewater. The kinetic and equilibrium of phosphate removal were investigated to evaluate the performance of modified alkaline residue. After treatment by NaOH(AR-NaOH), removal performance was significantly improved, while removal performance was almost completely lost after treatment by HCl(AR-HCl). The kinetics of the removal process by all adsorbents was well characterized by the pseudo second-order model. The Langmuir model exhibited the best correlation for AR-HCl, while AR was effectively described by Freundlich model. Both models were well fitted to AR-NaOH. The maximum adsorption capacities calculated from Langmuir equation were in following manner: AR-NaOH AR AR-HCl. Phosphate removal by alkaline residue was pH dependent process. Mechanisms for phosphate removal mainly involved adsorption and precipitation, varied with equilibrium pH of solution. For AR-HCl, the acid equilibrium pH( 6.0) was unfavorable for the formation of Ca-P precipitate, with adsorption as the key mechanism for phosphate removal. In contrast, for AR and ARNaOH, precipitation was the dominant mechanism for phosphate removal, due to the incrase on pH( 8.0) after phosphate removal. The results of both XRD and SEM analysis confirmed CaHPO4·2H2O formation after phosphate removal by AR and AR-NaOH. 相似文献