Abstract
The purpose of the present study is to find a suitable method for removal of iron and manganese from ground water, considering bothlocal economic al and environmental aspects. Ground water is a highly important source of drinking water in Romania. Ground water is naturally pure from bacteria at a 25 m depth or more. However, solved metals may occur and if the levels are too high, the water is not drinkable. Different processes, such as electrochemical and combined electrochemical-adsorption methods have been applied to determine metals content in accordance to reports of National Water Agency from Romania (ANAR). Every water source contains dissolved or particulate compounds. The concentrations of these compounds can affect health, productivity, compliance requirements, or serviceability and cannot be economically removed by conventional filtration means. In this study, we made a comparison between the electrochemical and adsorption methods (using membranes). Both methods have been used to evaluate the efficiency of iron and manganese removal at various times and temperatures. We used two membrane types: composite and cellulose, respectively. Different approaches, including lowering the initial current density and increasing the initial pH were applied. Reaction kinetics was achieved using mathematical models: Jura and Temkin .
Highlights
Electrochemical treatment is an emerging technology used for the removal of organic and inorganic impurities from water and wastewater
The purpose of the present study is to find a suitable method for removal of iron and manganese from drinking water
The method applying the composite and cellulose membranes adsorption presented the best results compared to photo-electrochemical method for removing iron and manganese ions from drinking water
Summary
Electrochemical treatment is an emerging technology used for the removal of organic and inorganic impurities from water and wastewater. Processes involve redox reactions, where oxidation and reduction reactions are separated in space or time [1,2]. The electrochemically treatment of water is concerned with electron transfer at the doi:10.5599/jese.244.
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