丝瓜络对废水中二价铜离子的吸附研究

Study on Using Vegetable Sponge of Luffa to Adsorb Cu( Ⅱ)in Waste Water

研究丝瓜络对二价铜离子的吸附效果。研究发现吸附时间、吸附剂用量、p H值、Cu(Ⅱ)初始浓度对丝瓜络的吸附容量和吸附率都有影响。在相同的吸附条件下,天然丝瓜络的吸附容量和吸附率均高于经酸处理的改性丝瓜络。在25℃,溶液中Cu(Ⅱ)初始浓度为20 mg/L,模拟废水体积为10 m L,p H为4,吸附时间40 min,吸附剂用量为0.1 g的吸附条件下,天然丝瓜络对Cu(Ⅱ)的吸附率达到77.70%,酸处理的改性丝瓜络吸附率只有51%。

Vegetable Sponge of Luffa has the nature of hydrophilcity and lipophilicity and unique dimensional physical structure should have special adsorption performance.According to these , the effect of Vegetable Sponge of Luffa to adsorb Cu （Ⅱ） was studied.It found that adsorption time , adsorbent dosage , pH value, Cu （Ⅱ） of initial concentration can influence Vegetable Sponge of Luffa＇s adsorption capacity and absorption rate.In the same adsorption conditions , untreated Vegetable Sponge of Luffa had higher adsorption capacity and absorption than the treated one .Under the conditions of 25 ℃, Cu（Ⅱ） of initial concentration was 20 mg/L, simulation wastewater 10 mL, pH value was 4, adsorption time was 40 min, the dose was 0.1 g, Vegetable Sponge of Luffa＇s adsorption rate reached 77.70%.