茶叶渣对废水中Cu^(2+)的吸附

Effect of Waste Tea to Adsorb Copper Ion from Wastewater

通过静态吸附试验,研究了茶叶渣对废水中Cu2+的吸附效果。考查了吸附时间、吸附剂用量、p H值、温度等对吸附效果的影响,并对吸附热力学进行了研究。结果表明:对50m L 20mg/L的Cu2+废水处理,吸附可在90min内完成,最佳投加量为0.7g,最佳p H值为6,温度对其影响较小,较优的吸附率可达68%。茶叶渣对Cu2+的吸附符合Langmuir等温吸附模型,最大饱和吸附量为2.08mg/g。

By static absorption test,the adsorption ability of waste tea to copper 1on trom wastewater was stuaaed, The influencing factors of contact time, adsorbent dosage, pH and temperature and adsorption thermodynamic were studied. The results indicated that equilibrium time was 90min, absorbent dosage was 0.75 g to adsorb 50mL 20mg/L 20mg/L Cu^2＋, the best pH was 6 and the adsorption ability was affected by the temperature. TheCu^2＋ removal rates was 68qe. The Cu^2＋ adsorption behavior of waste tea conformed to Langmuir adsorption equation. The maximum saturated adsorption capacity was 2.08mg/g.