Abstract:

Flocculent humic acid has been used as adsorbent for removing active brilliant red X-3B from wastewater.The adsorbing dynamics of flocculent humic acid on active brilliant red X-3B，and isothermal adsorbing mode，as well as the effects of the pH and dosage of humic acid on the adsorbing efficiency，have been studied. The resultsshow that the adsorbing dynamics conforms to the pseudo-second-order velocity equation. The isothermal mode fits the Langmuir equation properly. The maximum adsorbing capacity of mono-molecule layer is 526.32 mg/g. The removing rate of the dye increases obviously with the decrease of the pH of the solution. The removing rate of the dye inthe solution increases with the increase of the dosage of humic acid. All these show that flocculent humic acid can be used as a kind of inexpensive adsorbing material for treating wastewater containing dyes.

Key words: humic acid, dye wastewater, adsorption

摘要：

选用絮状腐殖酸作为吸附剂脱除废水中的活性艳红X-3B。研究了絮状腐殖酸对废水中活性艳红X-3B的吸附动力学、等温吸附模式以及pH、腐殖酸投加量对吸附效果的影响。结果表明,其吸附动力学符合准二级速率方程;吸附等温式满足Langmuir方程,最大单分子层吸附量为526.32 mg/g;废水中染料的去除率随溶液pH的减小而增加,随腐殖酸投加量的增加而增加。说明絮状腐殖酸可以作为一种廉价吸附材料,用于处理含染料废水。

关键词: 腐殖酸, 染料废水, 吸附

CLC Number: 

• X703