State Key Laboratory of Urban Water Resources and Environment, School of Municipal & Environmental Engineering, Harbin Institute of Technology, Huanghe Road 73, Nangang District, Harbin 150090, China.
J Hazard Mater. 2010 Jun 15;178(1-3):293-7. doi: 10.1016/j.jhazmat.2010.01.076. Epub 2010 Jan 21.
In the present work, the investigations were firstly focused on the effect of microwave on the species distribution of ferric hydrolysates, as well as the effect of hydrolysates speciation on the treatment efficiency of organic compounds in the process of coagulation. A ferron-complexation timed spectrophotometric method was used to classify the Fe(III) speciation under different reaction conditions. Effects of microwave power, initial pH and reaction temperature on species distribution were intensively investigated. When microwave power and initial pH were 300 W and 5, respectively, the amount of high polymeric ferric species, so-called Fe(c), reached its maximum. The increment of reaction temperature resulted in an increasing formation of Fe(c), and microwave was able to generate more Fe(c) than that of thermostatic method at the same temperature. Comparing with the treatment of pharmaceutical wastewater, the results indicated that Fe(c) facilitated the net rolling-sweep action for organic molecules in coagulation process, which enhanced the removal efficiency of entire reaction system.
在本工作中，首先研究了微波对铁水解产物形态分布的影响，以及水解产物形态对混凝过程中有机化合物处理效率的影响。采用Ferron 络合定时分光光度法在不同反应条件下对 Fe(III)形态进行分类。研究了微波功率、初始 pH 值和反应温度对形态分布的影响。当微波功率和初始 pH 值分别为 300 W 和 5 时，高聚合铁物种（即 Fe(c)）的量达到最大。升高反应温度会导致 Fe(c)的形成增加，并且在相同温度下，微波比恒温法能够产生更多的 Fe(c)。与处理制药废水相比，结果表明，Fe(c)促进了混凝过程中有机分子的净滚动扫除作用，从而提高了整个反应体系的去除效率。
