Experiments aimed at the removal of phosphate by electrochemical methods

Treatment of laundry waste‐water by electrocoagulation

“…These results can be explained by the distribution of aluminum ionic species. In the pH range 5-9 hydrolysis and polymerization of Al 3+ give rise to species such as Al(OH) 2+ , Al 2 (OH) 2 4+ , Al(OH) 3 and charged hydroxo cationic complexes such as Al 13 (OH) 32 7+ , which are efficient for coagulation. 2 When pH is greater than 10, the main hydrolysis product is Al(OH) 4− , which does not favour the formation of an anodized aluminum surface and the adsorption of dispersed solids.…”

“…Electrochemically produced aluminum ions have been found to be more efficient at removing phosphorus than the same amount of aluminum contained in an aluminum sulfate solution. 32 The main disadvantage of this process is that the presence of anions like chloride and sulfate reduce the removal efficiency and increase the total dissolved solids (TDS) in the treated waste-water. So to overcome these difficulties, in the present investigation, aluminum plates are used for the anode (for the generation of the coagulants) and cathode.…”

Solvent Effects in Electrocoagulation of Selected Plant Pigments and Tannin

“…However, those solutions were almost always aqueous in nature, for example, potable water [1][2], food wastewater [3], tar-sand and oil-shale wastewater [4], phosphate-containing sewage [5][6], industrial wastes containing cyanide and heavy metals [7][8][9], and dye-containing textile wastewater [10][11]. Electrocoagulation has also been used as a purification step in the isolation of a few natural products from crude plant extracts [12][13][14][15][16][17].…”

Dechlorophyllation by Electrocoagulation

“…However, no further work in which electrocoagulation has been similarly applied has appeared in the literature since then. Instead, electrocoagulation (EC), an electrochemical technique by which a variety of unwanted dissolved particles and suspended matter, both organic and inorganic, can be effectively removed from an aqueous solution by electrolysis, has been mainly used to treat various aqueous organic and inorganic wastes [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19], or sometimes as a method in clarifying potable water [20][21]. As an extension of the work by Miwa who used only aqueous plant extracts, we report here the dechlorophyllation of alcoholic plant extracts by electrocoagulation.…”