摘要：

木素磺酸钙和丙烯酰胺通过自由基聚合, 合成了木素基重金属絮凝剂(LSAM)。研究了LSAM与聚合硫酸铁(PFS)复配去除铜离子的效果。考察了絮凝剂投加量、pH、沉降时间等因素对铜离子去除率的影响。在最佳投加量(LSAM 140 mg/L+PFS 150 mg/L)下, pH在6.0左右, 沉降时间30 min, Cu^{2+的去除率可达到98%。}

关键词: 木素, 聚合硫酸铁, 絮凝, 铜离子

Abstract:

The lignin-based heavy metallic flocculant(LSAM) has been synthesized with lignin calcium sulfonate and acrylamide through free radical polymerization. The efficacy of removing copper ions by compositing LSAM and poly-ferric sulfate(PFS) is studied. The effects of the flocculant dosage, pH, and settling time on the removal rate of copper ions are investigated. Copper ion removing rate can achieve more than 98%, when the optimal dosages are LSAM 140 mg/L and PFS 150 mg/L, pH is about 6. 0 and setting time is 30 min.

Key words: lignin, poly-ferric sulfate, flocculation, copper ions

中图分类号: 

• X703. 1