School of Industrial Technology, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia.
Bioresour Technol. 2010 Feb;101(4):1166-74. doi: 10.1016/j.biortech.2009.09.064. Epub 2009 Oct 23.
Polyacrylamide (PAM), a commonly used organic synthetic flocculant, is known to have high reduction in turbidity treatment. However, PAM is not readily degradable. In this paper, pectin as a biopolymeric flocculant is used. The objectives are (i) to determine the characteristics of both flocculants (ii) to optimize the treatment processes of both flocculants in synthetic turbid waste water. The results obtained indicated that pectin has a lower average molecular weight at 1.63 x 10(5) and PAM at 6.00 x 10(7). However, the thermal degradation results showed that the onset temperature for pectin is at 165.58 degrees C, while the highest onset temperature obtained for PAM is at 235.39 degrees C. The optimum treatment conditions for the biopolymeric flocculant for flocculating activity was at pH 3, cation concentration at 0.55 mM, and pectin concentration at 3 mg/L. In contrast, PAM was at pH 4, cation concentration >0.05 mM and PAM concentration between 13 and 30 mg/L.
聚丙烯酰胺（PAM），一种常用的有机合成絮凝剂，以高浊度处理降低而闻名。然而，PAM不易降解。本文使用了果胶作为生物聚合絮凝剂。目的是（i）确定两种絮凝剂的特性；（ii）优化合成浊废水中两种絮凝剂的处理工艺。结果表明，果胶的平均分子量较低，为 1.63×10（5），PAM 为 6.00×10（7）。然而，热降解结果表明，果胶的起始温度为 165.58°C，而 PAM 的最高起始温度为 235.39°C。生物聚合絮凝剂的最佳处理条件为絮凝活性 pH 3，阳离子浓度 0.55mM，果胶浓度 3mg/L。相比之下，PAM 的最佳处理条件为 pH 4，阳离子浓度>0.05mM，PAM 浓度在 13 到 30mg/L 之间。
