蔗渣白泥中和硫酸锰溶液中有机物脱除的研究

Study on Removal of Organic Matter from Bagasse White Mud and Manganese Mulfate Leaching Solution

分别以活性炭、膨润土、大孔树脂为吸附剂,研究不同吸附剂脱除蔗渣白泥中和硫酸锰溶液中的有机物效果,单因素试验表明,3种吸附剂中膨润土的吸附效果最佳。研究还对膨润土的吸附参数进行正交优化,优化试验得到的最佳参数为:pH值4、吸附温度25℃,吸附时间40 min,膨润土用量12.0 g,在此条件下,MnSO 4溶液中的化学需氧量(COD)去除率可达到42.3%。试验为蔗渣白泥在电解二氧化锰(EMD)产业中实现资源化利用提供科学参考依据。

Activated carbon,bentonite and macroporous resin were used as adsorbents to study the effect of different adsorbents on the removal of organic matter from bagasse white mud and manganese sulfate leaching solution.Single factor test showed that bentonite had the best adsorption effect among the three adsorbents.In addition,the adsorption parameters of bentonite were orthogonal optimized,and the optimal parameters were obtained as follows:pH is 4,reaction temperature 25℃,reaction time 40 min,bentonite dosage 12.0 g.Under these conditions,the removal rate of chemical oxygen demand(COD)in MnSO 4 leaching solution could reach 42.3%.The experiment provides scientific reference for realizing resource utilization of bagasse white mud in electrolytic manganese dioxide(EMD)industry.