CAJ | 학술논문

采用 XRD、FT-IR 等手段分别对石棉尾矿和石棉尾矿酸浸渣进行表征。利用活化煅烧的石棉尾矿酸浸渣对亚甲基蓝（MB）进行静态吸附研究，探讨了吸附剂投加量、吸附时间、pH 值、离子强度和温度等因素对吸附作用的影响。结果表明：pH 值、离子强度和温度对亚甲基蓝在石棉尾矿酸浸渣上的吸附影响较大。当 pH<4.5时，吸附量随着 pH 值的增大而增大，随后 pH 值增大，吸附量基本不变；亚甲基蓝在石棉尾矿酸浸渣上的吸附随离子强度的增大而降低；通过相关热力学研究计算吸附过程为吸热过程，即高温利于吸附；亚甲基蓝在石棉尾矿酸浸渣上的吸附动力学符合 Lagrange 准二级方程；热力学符合 Langmuir 等温线方程。
채용 XRD、FT-IR 등수단분별대석면미광화석면미광산침사진행표정。이용활화단소적석면미광산침사대아갑기람（MB）진행정태흡부연구，탐토료흡부제투가량、흡부시간、pH 치、리자강도화온도등인소대흡부작용적영향。결과표명：pH 치、리자강도화온도대아갑기람재석면미광산침사상적흡부영향교대。당 pH<4.5시，흡부량수착 pH 치적증대이증대，수후 pH 치증대，흡부량기본불변；아갑기람재석면미광산침사상적흡부수리자강도적증대이강저；통과상관열역학연구계산흡부과정위흡열과정，즉고온리우흡부；아갑기람재석면미광산침사상적흡부동역학부합 Lagrange 준이급방정；열역학부합 Langmuir 등온선방정。
This research characterized calcined acid leaching residue of asbestos tailing (CAAT) using XRD and FT-IR,and investigated the adsorption behaviors of methylene blue(MB) on AAT. Batch experiments were conducted to analyze the effects of the solid amount,contact time,pH,temperature and ionic strength on the adsorption of MB. The results indicated that the adsorption of MB strongly depended on pH,ionic strength and temperature. At pH<4.5,the adsorption capacity increased with the increasing of pH; at pH≥4.5,the adsorption capacity was not affected by the increasing pH. The adsorption capacity decreased with increasing ionic strength. The thermodynamic calculations indicated that the adsorption process was endothermic and spontaneous. The adsorption of MB on the acid leaching residue of asbestos tailing was consistent with pseudo-second-order kinetic model and Langmuir model.