气化细渣、铝灰的活化及其吸附性能  

Activation of gasification fine slag and aluminum ash and their adsorption properties

作　　者：刘新维 高珊 王红涛[1] 王建成 LIU Xinwei;GAO Shan;WANG Hongtao;WANG Jiancheng(School of Environmental Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,Shanxi,China;Key Laboratory of Atmospheric Complex Pollution Identification and Control in Shanxi Province,Taiyuan 030024,Shanxi,China)

机构地区：[1]太原理工大学环境科学与工程学院,山西太原030024 [2]大气复合污染识别与控制山西省重点实验室,山西太原030024

出　　处：《化工进展》2025年第1期558-571,共14页Chemical Industry and Engineering Progress

基　　金：山西省基础研究计划(20210302124132,20210302123176)。

摘　　要：以工业废渣——煤气化细渣(FS)、铝灰(AA)为原料,一步碱熔法制备介孔吸附材料。研究了上述介孔材料对水中亚甲基蓝的吸附性能,结果表明,FS的最佳处理条件为:m_(FS)∶m_(NaOH)=5∶10、煅烧温度450℃、处理时间5h;AA的最佳处理条件为:m_(AA)∶m_(NaOH)=5∶8、煅烧温度550℃、处理时间3h。经碱熔处理后,FS材料对水中亚甲基蓝(MB)的吸附容量由1.16mg/g(FS-0)提升到67.85mg/g(FS-2),增长了近58倍;AA对水中亚甲基蓝的吸附容量由1.4mg/g(AA-0)提升到23.95mg/g(AA-2),增长了近17倍。X射线衍射、扫描电子显微镜、比表面积分析及傅里叶变换红外光谱等表征结果表明,两种材料在碱熔过程中形成的介孔孔道、带有氧缺陷位的Si—O—基团以及大量的Al—OH和Si—OH键是其对亚甲基蓝吸附性能得到大大提升的原因。本研究表明FS和AA可以应用为一种廉价的亚甲基蓝吸附剂,为二者的资源化利用和印染废水的处理提供了一种潜在的方法。Coal gasification fine slag(FS)and aluminum ash(AA),being industrial wastes,were used as raw materials to prepare the mesoporous adsorbents by one-step alkali fusion treatment.The adsorption performance of the above mesoporous materials on methylene blue in water was investigated.The results showed that the optimal treatment conditions for FS were m_(FS∶mNaOH)=5∶10,calcination temperature of 450℃and treatment time of 5h.The optimal treatment conditions for AA were m_(AA∶mNaOH)=5∶8,calcination temperature of 550℃and treatment time of 3h.The adsorption capacity for methylene blue increased from 1.16mg/g(FS-0)to 67.85mg/g(FS-2),an increase of nearly 58 times.The adsorption capacity for methylene blue increased from 1.4mg/g(AA-0)to 23.95mg/g(AA-2),an increase of nearly 17 times.The characterizations of X-ray diffraction,Scanning electron microscope,BET and Fourier transform infrared spectrometer indicated that the formation of mesoporous structure,Si-O-groups with oxygen defect sites and a large number of Al-OH and Si-OH bonds was responsible for the greatly improved adsorption performance of theadsorbents.This study indicated that FS and AA could be used as cheap adsorbents for methylene blue in water,which provided a potential method for their resource utilization and treatment of dyeing wastewater.

关 键 词：废水 吸附 气化细渣 铝灰 

分 类 号：TQ424.2[化学工程]