water treatment

Performance of Electrocoagulation Process Using Iron and Aluminum Electrodes with and without Perforations

Electrocoagulation process is widely used for the removal of pollutants from the industrial wastewater. In the present study, an attempt was made to investigate the performance of electrocoagulation process using alu-minum and iron electrodes to treat the metal ions present in the synthetic galvanic wastewater. The electrodes used are with and without perforations and it was observed that the efficiency of electrodes with perforation (80 %) was higher than without perforations (50 %). The removal efficiency of heavy metal ions increased with retention time and direct current.

Interaction Effect of Operating Parameters during Oxidation of Different Dyes via the Fenton Process. Application of the Plackett-Burmann Design

The interaction effect of eight operating factors on the degradation of three organic dyes of different structures (Cibacron green, methylene blue and methyl orange) has been studied. Effect had been evaluated statistically using the Plackett-Burman screening design which ex-tracted valuable information on the most important parameters and their interactions. The goodness of the model fit was checked by the determination of the coefficient R2.

Comparative Study of Moringa Oleifera and Citrus Paradisi as Disinfectants and Coagulants for Water Treatment

The coagulant and disinfectant qualities of Moringa oleifera and Citrus paradisi were investigated on various water samples acquired from sachet water (packaged water), borehole water, river water and well water. The results revealed that Moringa oleifera functioned adequately at settling time beyond 2 h in highly turbid river water but was more effective when combined with Citrus paradisi. Moringa oleifera or its combination with Citrus paradisi is less effective for turbid water treatment but effective for river water (sample) purification.

Energy Saving from Tap Water Home Treatment Devices

Water is the only liquid used in human eating which presents different production and transportation processes. All the alimentary liquids, in fact, need production and sanification processes in controlled environments and transportation on carriers. On the other hand, besides more simple production processes, water can rely both on distribution networks and transportation on carriers. In the last years, bottled water consumption greatly increased not only for healthy needs but also for non-essential ones.

Colloid Removal from Aqua Media via Magnetite-Based Reagent

A new method has been developed to prepare an inexpensive magnetite-based reagent with balanced magnetic and sorption properties for colloidal removal from water solutions. The reagent has been obtained from the salts of ferrous iron at the room temperature. The kaolinite solution with the concentration range of 10 to 30 mg/l was chosen to carry out laboratory tests. The relationship between pH of the solution under treatment and the zeta potential of the reagent was investigated. It was found that the most effective heterocoagulation takes place at pH = 6.0–6.5.