Removal of phosphate from aqueous solutions by electro-coagulation

Bektaş, Nihal; Akbulut, H.Y.; İnan, Hatice; Димогло, А. С.

doi:10.1016/j.jhazmat.2003.10.002

Cited by 198 publications

(80 citation statements)

References 19 publications

(20 reference statements)

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“…In case of HRT was 1.17 minutes, the ratio Al consumption/T-P removal were around 3. On the other hand, it took over 10 minutes to reach at least 90% of the phosphorus removal from the solution content 10 mg/L [6] or 50 mg/L [7] phosphorus using aluminum plate electrodes.…”

Section: Synthetic Wastewatermentioning

confidence: 99%

Removal of Total Phosphorus From Municipal Wastewater Using Cylindrical Aluminum Electrode in Continuous Mode

Viet

2018

JST

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This study aimed to apply electro-coagulation method using cylindrical Aluminum electrode in continuous mode to remove total phosphorus (T-P) in municipal wastewater. The effects of NaCl concentration (or conductivity) and hydraulic retention time (HRT, or flow rate) on T-P removal efficiency were investigated. To determine the efficiency of this system the ratio Al consumption/T-P removal was also considered. The results showed that, with raw sewage as influent, HRT = 1.17 min and added NaCl = 0.04 % was found the best conditions for the highest T-P removal efficiency (92.80 %; T-P concentration remainder was 0.17 mg/L) and the ratio Al consumption/T-P removal was 5.0. In general, this method achieves a high efficiency of removing phosphorus from wastewater and it can be used in sewage treatment systems.

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Section: Synthetic Wastewatermentioning

confidence: 99%

Removal of Total Phosphorus From Municipal Wastewater Using Cylindrical Aluminum Electrode in Continuous Mode

Viet

2018

JST

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“…La diminution de l'ammonium pourrait ). Les mêmes résultats ont été trouvés par d'autres auteurs (BEKTAS et al, 2003). Ils ont montré que l'abattement maximal des phosphates est atteint pour des pH compris entre 5 et 6.…”

Section: B) Abattement De La Concentration Des Orthophosphates Et Desunclassified

Traitement des margines par électrocoagulation avec des électrodes plates en aluminium

Hanafi

Sadif

Assobhei

et al. 2009

rseau

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Cet article est diffusé et préservé par Érudit. , la réduction des orthophosphates est 94-99 %, la réduction de l'ammonium est 80-85 %,la réduction du zinc -3 . Ces niveaux opérationnels optimaux permettent d'avoir une bonne dégradation des margines.Traitement des margines par électrocoagulation 474 est 70-75 %, la réduction du fer est 71-76 %, la masse perdue des électrodes est 0,6-0,7 kg•m -3 et l'énergie consommée est 12-14 kWh•mMots clés : Margine, caractérisation, électrocoagulation, électrodes en aluminium, décoloration, DCO, polyphénols. ABSTRACTOlive mill wastewater (OMWW) generated by the olive oil extraction process is the main waste product of this industry. These effluents have been characterized, followed by an experimental study of the elimination of organic matter (chemical oxygen demand (COD), phenolic compounds, suspended solids (SS) and colour), mineral matter (phosphate and ammonium nitrogen) and heavy metals (zinc and iron) using an electrocoagulation technique with aluminum electrodes. It was found that an increase in electrolysis time and voltage improved treatment significantly. However, a simultaneous increase in electrode and energy consumption was observed.The results of these analyses showed that the olive mill wastewater (OMWW) effluent, diluted five times, is acidic (pH 4.2), has a very high organic matter concentration , the reduction of orthophosphates was 94-99% and the reduction of ammonium was 80-85%. The reduction of zinc was 70-75%, the reduction of iron was 71-76%, the electrode consumption was 0.6-0.7 kg•m -3 and the amount of energy consumed was [12][13][14] . Under these optimal operational conditions, acceptable degradation of the OMWW was achieved.

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“…Chemical precipitation process may consume expensive chemicals and produce large amounts of chemical sludge [9]. Electrolysis is restricted by the small capacity of handling wastewater and the frequent renewal of electrodes [10,11]. Recovering phosphorus from wastewater using chemical adsorbents is expensive, so cheaper and more efficient adsorbents are necessary for research [12].…”

Section: Introductionmentioning

confidence: 99%

Phosphorus Recovery by Struvite Crystallization from Livestock Wastewater and Reuse as Fertilizer: A Review

Zhang¹,

Jiang²,

Deng³

2017

Physico-Chemical Wastewater Treatment and Resource Recovery

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In China, the intensive livestock farming produces massive livestock wastewater with high concentration of phosphorus. Discharge of these compounds to surface water not only causes water eutrophication but also wastes phosphorus resources for plant growth. Therefore, it's necessary combining the removal of phosphorus from livestock wastewater with its recovery and reuse as fertilizer. As a valuable slow-release mineral fertilizer, struvite crystallization has become a focus in phosphorus recovery. In this chapter, struvite crystallization mechanism, reaction factors, crystallizers, and the applications of struvite as fertilizer are discussed. Two steps of nucleation and crystal growth for struvite crystallization from generation to growth are introduced. The reaction factors, including molar ratio of magnesium and phosphate, solution pH, coexisting substances, and seeding assist, of struvite crystallization are summarized. Several innovate types of crystallizer, which relate to the shape and size of harvest struvite to realize the phosphorus recycling, are demonstrated. Due to the influence of toxic or harmful impurities in struvite on its reuse as fertilizer, the environmental risk evaluation of struvite application is introduced. In conclusion, struvite crystallization is a promising tool for recovering phosphorus from livestock wastewater.

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Removal of phosphate from aqueous solutions by electro-coagulation

Cited by 198 publications

References 19 publications

Removal of Total Phosphorus From Municipal Wastewater Using Cylindrical Aluminum Electrode in Continuous Mode

Removal of Total Phosphorus From Municipal Wastewater Using Cylindrical Aluminum Electrode in Continuous Mode

Traitement des margines par électrocoagulation avec des électrodes plates en aluminium

Phosphorus Recovery by Struvite Crystallization from Livestock Wastewater and Reuse as Fertilizer: A Review

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