木屑黄原酸酯的研制及在重金属废水处理中的应用

Preparation of sawdust cellulose xanthate for the treatment of heavy metal wastewater

摘要: 以木材加工行业所产废弃物木屑为原料研制出木屑黄原酸酯，研究了木屑黄原酸酯的使用量、作用时间、pH值和温度对重金属离子废水处理效果的影响．结果表明，在常温条件下，pH值在5～10范围内，木屑黄原酸酯对Cu²⁺，Ni²⁺，Zn²⁺的去除率达98％以上，处理后废水中Cu²⁺，Ni²⁺,Zn²⁺的含量达到国家排放标准．并对木屑黄原酸酯去除金属离子的作用机理和木屑黄原酸酯的稳定性进行了分析。

Abstract: Sawdust cellulose xanthate was prepared from sawdust of the wood machining industry, and the processing parameters were optimized. The effects of the dosage of sawdust cellulose xanthate, reactive time, pH value, temperature on the removal of heavy metal ions in wastewater were investigated. The mechanism of removing heavy metal ions and the stability of sawdust cellulose xanthate were also discussed. The removing rates of heavy metals Cu²⁺, Ni²⁺ and Zn²⁺ by sawdust cellulose xanthate were above 98%, and the mass concentrations of Cu²⁺, Ni²⁺ and Zn²⁺ in the treated wastewater were lower than those in the national standard.