| 活性炭负载二氧化锰的制备及其对罗丹明B吸附效能 |
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| 引用本文： | 史欢欢,赵建海,李海燕,李文朴,苑宏英.活性炭负载二氧化锰的制备及其对罗丹明B吸附效能[J].环境工程,2017,35(9):58-63. |
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| 作者姓名： | 史欢欢 赵建海 李海燕 李文朴 苑宏英 |
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| 作者单位： | 1. 天津城建大学环境与市政工程学院天津市水质科学与技术重点实验室,天津,300384;2. 天津城建大学环境与市政工程学院天津市水质科学与技术重点实验室,天津300384;煤气化及能源化工教育部重点实验室,上海200237;3. 北京建筑大学北京市可持续城市排水系统构建与风险控制工程技术研究中心,北京,100044 |
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| 基金项目： | 煤气化及能源化工教育部重点实验室，化学工程联合国家重点实验室开放基金，国家自然科学基金 |
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| 摘 要： | 采用颗粒活性炭(GAC)以共沉淀和热分解法制备了改性活性炭(MnO_2-AC),并采用SEM、XRD表征手段对改性前后活性炭进行微观分析;进而研究了GAC和MnO_2-AC随染料初始浓度、活性碳投加量、温度、吸附时间变化对染料废水罗丹明B的吸附效果影响。结果表明:GAC经改性后,活性炭表面变得粗糙,并有MnO_2产生。在MnO_2-AC投加量为0.2 g,罗丹明B浓度为100 mg/L,温度为25℃条件下反应12 h,其吸附量达到36.80 mg/g。另外,MnO_2-AC对罗丹明B的吸附过程符合Langmuir等温模型,并遵循准二级动力学模型。
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| 关 键 词： | 颗粒活性炭 改性 二氧化锰 罗丹明B 吸附 |
PREPARATION OF MANGANESE DIOXIDE LOADED ON ACTIVATED CARBON AND ITS ADSORPTION EFFECT ON RHODAMINE B |
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| SHI Huan-huan,ZHAO Jian-hai,LI Hai-yan,LI Wen-pu,YUAN Hong-ying.PREPARATION OF MANGANESE DIOXIDE LOADED ON ACTIVATED CARBON AND ITS ADSORPTION EFFECT ON RHODAMINE B[J].Environmental Engineering,2017,35(9):58-63. |
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| Authors: | SHI Huan-huan ZHAO Jian-hai LI Hai-yan LI Wen-pu YUAN Hong-ying |
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| Abstract: | Modified activated carbon (MnO2-AC) was prepared with raw granular activated carbon (GAC) via an impregnation,precipitation and calcination method,and characterized before and after modification using X-ray diffraction (XRD) and scanning electron microscopy (SEM).Subsequently,the GAC and MnO2-AC adsorption effect of rhodamine B wastewater were discussed with the following conditions:adsorbents amount,temperature,dye initial concentration,reaction time.The results showed that the surface of MnO2-AC became rougher after GAC modified and MnO2 was generated.Under the experimental conditions of MnO2-AC dosage of 0.2 g,rhodamine B concentration of 100 mg/L,temperature of 25 ℃,reaction time of 12 h,MnO2-AC adsorption quantity reached 36.80 mg/g.In addition,the adsorption process of MnO2-AC of rhodamine B fitted with Langmuir isotherm model and followed pseudo second-order kinetic model. |
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| Keywords: | granular active carbon modified manganese dioxide rhodamine B adsorption |
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