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锰改性含钛高炉渣光催化剂降解废水中的Cr6+
引用本文:张士秋,王维清.锰改性含钛高炉渣光催化剂降解废水中的Cr6+[J].金属矿山,2017,46(5):181-184.
作者姓名:张士秋  王维清
作者单位:1.西南科技大学环境与资源学院,四川 绵阳 621010;2.固体废物处理与资源化教育部重点实验室,四川 绵阳 621010
基金项目:矿物加工科学与技术国家重点实验室开放基金专项(编号:BGRIMM-KJSKL-2015-07 );西南科技大学研究生创新基金项目,固体废物处理与资源化教育部重点实验室开放基金项目
摘    要:为了实现以废治废、变废为宝的目标,以攀钢含钛高炉渣为原料、MnO2为改性剂,采用高温固相法制备了改性的TiO2光催化剂。通过XRD、UV-Vis吸收光谱等对其进行表征,研究了模拟废液pH、催化剂用量和光照时间等因素对改性的TiO2光催化剂降解Cr6+的影响。结果表明:800 ℃下煅烧2 h所得的含钛高炉渣光催化材料中出现的锐钛矿型TiO2对紫外区域有较好的光响应。在溶液pH=1.62,光催化剂用量为0.40 g/L,光照时间为60 min情况下,Cr6+浓度为10 mg/L的模拟废水中Cr6+的降解率为89.17%。

关 键 词:含钛高炉渣  锰改性光催化剂  Cr6+降解率  

Manganese Modified Ti-bearing Blast Furnace Slag Type Photocatalyst Degrade Cr6+in Waste Water
Zhang Shiqiu,Wang Weiqing.Manganese Modified Ti-bearing Blast Furnace Slag Type Photocatalyst Degrade Cr6+in Waste Water[J].Metal Mine,2017,46(5):181-184.
Authors:Zhang Shiqiu  Wang Weiqing
Affiliation:1.School of Environment and Resource,Southwest University of Science and Technology,Mianyang 621010,China;2.Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education,Mianyang 621010,China
Abstract:In order to realize the targets of using waste into treatment of waste and turning the waste into treasure,using Ti-bearing blast furnace slag as material and MnO2 as the modifier through high temperature solid phase method produced TiO2 pho-tocatalyst. Through XRD,UV-Vis diffuse analyzed its characterization,Influence of factors such as pH of the simulated waste wa-ter,addition amount of photocatalyst,and illumination time on degradation rate of Cr6+ by TiO2 photocatalyst. Results indicated that anatase phase TiO2 produced through calcination at 800 ℃ for 2 h of Ti-bearing blast furnace slag photocatalyst has better photo response effect to ultraviolet region. The degradation rate of Cr6+ reached to 89. 17%, when simulated effluent pH was 1. 62,photocatalyst additive amount was 0. 40 g/L,illumination time was 60 min.
Keywords:Ti-bearing blast furnace slag  Manganese modified photocatalysis  Cr6+degradation rate
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