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Electrocoagulation and coagulation by iron of latex particles in aqueous suspensions

机译：水性悬浮液中乳胶颗粒的电凝和铁凝结

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The goal of coagulation of fine disperse latex particles of suspensions by dosing with iron ions is to enhance suspension clarification, promote sedimentation and improve their filterability. Two kinds of iron dosing were studied; by directly adding iron chloride or iron sulphate to suspensions or by electrolytic decomposition of iron electrodes (electrocoagulation process, EC). The chemical and electrical processes were examined by varying the pH value and the iron ions concentration in order to determine the optimal operating conditions. To miimise the energy consumption in EC, the suspension conductivity and the current density were varied. This paper shows that flocs in EC-treated suspensions had a higher density and tended to be larger than flocs formed in suspensions dosed with iron chloride or iron sulphate. The kinetics of settling and filtration of EC-treated suspensions were accelerated, demonstrating the interest of EC as an alternative to chemical conditioning.
机译：通过与铁离子配给而使悬浮液的细分散乳胶颗粒凝结的目的是增强悬浮液的澄清度，促进沉降并提高其过滤性。研究了两种铁计量方法：通过将氯化铁或硫酸铁直接添加到悬浮液中或通过铁电极的电解分解（电凝过程，EC）。通过改变pH值和铁离子浓度来检查化学和电气过程，以确定最佳的操作条件。为了降低EC中的能耗，可以改变悬架电导率和电流密度。本文表明，经EC处理的悬浮液中的絮凝物具有更高的密度，并且倾向于比在氯化铁或硫酸铁中的悬浮液中形成的絮凝物大。加速了经EC处理的悬浮液的沉降和过滤动力学，证明了EC替代化学条件的兴趣。

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