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《Environmental Science & Technology》 2013-S1
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Short-term Leaching Characteristics of Chromium in the AOD Slag

ZHENG Na,LI Jun-guo,WANG Ya-jun(School of Metallurgy and Energy,Hebei United University,Tangshan 063009,China)  
Based on solid waste leaching toxicity testing standards,using static test method to research the influence of leaching time,solid-liquid ratio,dissolved oxygen and initial pH value of solution on the short-term Cr leaching in AOD slag.The results indicated that the pH value of the leaching solution is rapidly increased,but E and DO are rapidly decreased by AOD slag;there are two phases of the leaching of Cr,namely fast leaching and slow leaching,the leaching of Cr reaches basic equilibrium within 24 h.Although the effect of solid-liquid ratio on the Cr3+ concentration in AOD slag leaching solution was less,solid waste leaching toxicity testing standards will underestimate the amount of leaching of Cr and its toxic due to the balance between the Cr3+ and OH-reaction;the influence of dissolved oxygen on the leaching Cr is relatively small in short-term leaching process;compared with neutral leaching solution,alkaline leaching solution has less effect on the leaching of Cr in AOD slag;under acid conditions,extending leaching time and reducing the initial pH value of the solution will significantly increase the concentration of the leaching solution of Cr3+.Therefore,the evaluation of neutral leaching solution for toxicity of Cr leaching in AOD slag will remarkably underestimate Cr leaching toxicity.
【Fund】: 国家自然科学基金项目(2008CB617602)
【CateGory Index】: X53
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【Citations】
Chinese Journal Full-text Database 1 Hits
1 Sun Ying,Li Suqin;Study on treatment of chromium-Containing wastewater by Modified fly ash[J];Fly Ash Comprehensive Utilization;2009-01
【Co-citations】
Chinese Journal Full-text Database 7 Hits
1 Xu Qiheng (Department of Chemist,Yunnan University,Kunming 650091), Li Zubi (Adult Education College,Yunnan University,Kunming 650091) and Xu youhong (Kunming Junior Normal College,Kunming 650031),Fenxi Shiyanshi,;Photometric Analysis[J];ANALYTICAL LABORATORY;1997-04
2 Fang Hui-Lan (Fujian Nan ping Environmental Monitoring Station,Nan ping,Fujian 353000,China);Study on treatment of waste water of Cr(Ⅵ) by activated carbon made of fly ash flotation carbon[J];Fujian Analysis & Testing;2012-04
3 YU Meiqiong,YANG Jinbei,WANG Zhichao,CHEN Wentao(Department of Biological and Chemical Engineering,Fuqing Branch of Fujian Normal University, Fuzhou 350300,Fujian,China);Study on adsorption performance of Cr(Ⅵ) by modified honeycomb-cinder[J];Chemical Industry and Engineering Progress;2011-12
4 Yin Jiayuan 1 Yang Guangyu 1 Yin Ning 2 Xu Qiheng 1 (1 Dept.of Chemistry,Yunnan Univ.Kunming 650091; 2 Institute of Elemento Organic Chem.,Nankai Univ.,Tianjin 300071);A New Colour Reaction of Chromium(Ⅵ) and Its Analytical Application in Environmental Water[J];Chinese Journal of Enviromental Science;1998-02
5 SUN Xia,WU Yi-mei,WANG Qi-yao(School of Chemical Engineering,Huaihai Uiversity of Technology,Lianyungang 222005,China);Experiment Study on Alkaline Dissolved Fly Ash to Adsorb Hexavalent Chromium in Waste Water[J];Coal Science and Technology;2010-10
6 Zhi Qing(Inner Mongolia Electric Power Science & Research Institute,Inner Mongolia Hohhot 010020);Modified Fly Ash Application in Water Treatment[J];Inner Mongolia Electric Power;2012-05
7 CAO Shu-qin,JIN Chun-xue,LIU Wen-jing(College of Chemistry and Chemical Engineering,Xinyang Normal University,Xinyang 464000,China);Study on the Absorption and Regeneration for Methyl Orange by the Modified Fly Ash[J];Journal of Xinyang Normal University(Natural Science Edition);2010-01
【Secondary Citations】
Chinese Journal Full-text Database 1 Hits
1 HU Tao, LI Ya-yun (Bioengineering and Chemical Engineering Department, Huaiyin Institute of Technology, Huaian, Jiangsu 223001, China);Advances in Cr-containing Wastewater Treatments[J];Pollution Control Technology;2005-04
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