赤泥制备环境修复材料的吸附性能研究  

Adsorption Performance of Environmental Restoration Material Prepared from Red Mud

作　　者：姚珺[1] 金云霄[2] 郑明明[3] 

机构地区：[1]洛阳理工学院环境工程与化学系,河南洛阳471023 [2]洛阳理工学院土木工程系,河南洛阳471023 [3]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《工业安全与环保》2014年第3期27-30,共4页Industrial Safety and Environmental Protection

基　　金：河南省科技攻关项目;项目编号122102310359

摘　　要：通过对赤泥进行焙烧、酸浸活化,作为环境修复材料对亚甲基蓝的吸附性能进行测试。试验表明,焙烧酸浸后赤泥吸附亚甲基蓝的最佳吸附条件为pH=8,吸附剂最佳投加量为0.9 mg/mL,吸附时间40min,吸附率为80.62%。对实验数据进行相关数学模型拟合,结果表明,该等温吸附平衡符合Langmuir模型,说明这种吸附更趋向于单层吸附。对比几种不同吸附材料粒状活性炭、粉末活性炭、赤泥、焙烧后酸浸赤泥及焙烧赤泥对亚甲基蓝吸附效果,可以看出焙烧酸浸后赤泥对亚甲基蓝的吸附效果仅次于粉末状活性炭,而高于赤泥、粒状活性炭及焙烧赤泥。The adsorption performance of environmental restoration material prepared from red mud with roasting and acid leaching on the methylene blue is investigated. The results indicate the best adsorption conditions d red mud roasted and acid leached on methylene blue should be： pH = 8, 0.9 mg/mL of the adsorbent dosing quantity, 40 rains of the adsorption time and 80.62% of adsorption efficiency respectively. Fitting the related mathematical model to the experimental data, the results show that the equilibrium adsorption isotherm accords with the Langmuir model and the adsorption tends monolayer adsorption. The adsorption performances of sevend different materials on methylene blue are compared, such as granular ac tivated carbon, powdered activated carbon, red mud, roasting and acid leaching of red mud and roasting of red mud. It shows the adsorption performance of roasting and acid leaching of red mud on methylene blue is only lower than that of pow dered activated carbon, but higher than that of red mud, granular activated carbon and masting red mud.

关 键 词：赤泥 环境修复材料 亚甲基蓝 

分 类 号：X703.5[环境科学与工程—环境工程]