Armagan Bulent, Ozdemir Orhan, Turan Mustafa, Celik M Sabri
Department of Environmental Engineering, Faculty of Civil Engineering, Istanbul Technical University, Maslak, Istanbul, Turkey.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2003;38(10):2251-8. doi: 10.1081/ese-120023372.
Textile industry effluents exhibit large amounts of dye chemicals, which create severe water pollution. It is therefore important to reduce the dye concentration in the wastewater before discharging into the environment. In this study, the ability of sepiolite to uptake different reactive dyes is investigated. The dyes used in the experiments are Everzol Black B, Everzol Yellow 3RS H/C, and Everzol Red 3BS. A number of parameters on adsorption has been investigated in order to establish the adsorption pattern of sepiolite. The effect of conditioning time, solid/liquid ratio, pH, temperature, and dye concentrations on adsorption are studied. Adsorption isotherms for different reactive dyes have been obtained using both natural and modified sepiolites. The maximum capacity of natural sepiolite for the reactive dyes occurs at around 0.1-1 mg/g. Therefore, the natural sepiolite appears to have a little capacity for reactive dyes. The zeta potential profiles of natural and modified sepiolites against pH are also examined. The modified sepiolite exhibited ten times higher performance than the natural sepiolite.
纺织工业废水含有大量染料化学品，会造成严重的水污染。因此，在将废水排放到环境之前降低其中的染料浓度非常重要。在本研究中，对海泡石吸附不同活性染料的能力进行了研究。实验中使用的染料为Everzol黑B、Everzol黄3RS H/C和Everzol红3BS。为了确定海泡石的吸附模式，对吸附的多个参数进行了研究。研究了调节时间、固液比、pH值、温度和染料浓度对吸附的影响。使用天然海泡石和改性海泡石获得了不同活性染料的吸附等温线。天然海泡石对活性染料的最大吸附量约为0.1 - 1毫克/克。因此，天然海泡石对活性染料的吸附能力似乎较低。还研究了天然海泡石和改性海泡石的ζ电位随pH值的变化情况。改性海泡石的性能比天然海泡石高出十倍。
