Production of struvite by magnesium anode constant voltage electrolytic crystallisation from anaerobically digested chicken manure slurry

Luo, Wendan; Fang, Youshuai; Song, Liuying; Niu, Qigui

doi:10.1016/j.envres.2022.113991

Cited by 11 publications

(4 citation statements)

References 49 publications

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“…This could be due to the discovery of dissolved metal ions and their hydroxides during the saturation stage of floc development. This result tends to be similar to the study of Luo et al (2022). Thus, the optimum reaction time chosen was 20 min.…”

Section: Influence Of Reaction Timesupporting

confidence: 82%

Removal of ammonium and phosphate from slaughterhouse wastewater by electrochemical method using magnesium electrodes

Ho¹,

Huynh²,

Tran³

et al. 2022

The J. Agric. Dev.

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In this research, the treatability of slaughterhouse wastewater was investigated by using the electrochemical method with Mg electrodes. The influence of the variables such as initial pH (4, 5, 6, 7, 8, and 9), current density (15, 30, and 45 mA/cm2), and reaction time (20, 25, and 30 min) on the removal efficiency of ammonium and phosphate was studied. The highest phosphate removal efficiency was reached at 100% after 20 min of electrochemical treatment with 30 mA/cm2 of current density and initial pH 6. Meanwhile, the maximum removal percent of ammonium was approximately 52%. Thus, this method is feasible to apply for the removal of phosphate and ammonium in slaughterhouse wastewater.

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Section: Influence Of Reaction Timesupporting

confidence: 82%

Removal of ammonium and phosphate from slaughterhouse wastewater by electrochemical method using magnesium electrodes

Ho¹,

Huynh²,

Tran³

et al. 2022

The J. Agric. Dev.

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“…The recovery rate of 5.24 mgP/h/cm 2 reached at voltage of 2 V, temperature of 25 o C, digestion time of 90 min and 4.60 mgP/h/cm 2 in anaerobic treatment system of chicken manure. It indicated that the purity of recovered struvite was 98.9% at initial pH of 7.9 [46]. Thus, the magnesium electrode was able to rapidly combin with NH4 + and PO4 3to produce high quality struvite.…”

Section: Recover Of N and P From Wastewater For Supplement Nutrients ...mentioning

confidence: 93%

Ultrasonic and Electrocoagulation Technologies in Wastewater Treatment and Material Circulation

Khai,

Thi Mai,

Minh Hang

et al. 2024

EES

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Due to the emergence of new and persistent pollutants in wastewater, various advanced oxidation processes (AOPs) such as ultrasonic technology and electrocoagulation have been developed and employed for pollutant degradation, removal, and recovery from wastewater. In this study, we investigated the principles, influencing factors, and practical applications of several methods combining ultrasound and electrocoagulation with catalysts and demonstrated the efficiency of each method. Additionally, we analyzed the challenges associated with these ultrasonic methods and electrocoagulation in removing antibiotics and recovering pollutants from aqueous solutions and suggested solutions to these problems. Materials recovered after treatment can be utilized to improve soil quality.

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“…Since most wastewaters present low concentrations of magnesium, magnesium source is a key factor [49]. A possible way to supply magnesium is the use of magnesium consumable electrodes, which have been studied due to their ability to supply suitable amounts of magnesium, regulate pH, produce higher purity struvite, and favor control and automation at an industrial scale [50,51]. Of the metals applied in engineering, magnesium has one of the most negative standard reduction potentials (−2.37 V vs. SHE), being largely used as sacrificial metal to protect materials based on aluminum, zinc, iron, and others [52].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Recovery of Phosphorus from Simulated and Real Wastewater: Effect of Investigational Conditions on the Process Efficiency

Sousa,

Fernandes,

Amaro

et al. 2023

Sustainability

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The development of recovery processes has become essential in recent years as a strategy to minimize environmental pollution while boosting circular economy and sustainable development. Due to the exponential growth in agricultural production and the increased pollution of waterbodies, the production of fertilizers from recovered phosphorus has become an alternative to phosphate rock-based production. In this work, the effect of different operational parameters in the efficiency of the electrochemical recovery of phosphorus, from organic and inorganic sources, was investigated. Among the studied variables, the most significant was the electrode material utilized in the system. The use of magnesium sacrificial electrodes, as AZ31 alloys, led to phosphorus removal from solution of above 90%, allowing the recovery of both orthophosphates and organic phosphorus (glyphosate) as struvite, brucite, and other amorphous compounds. Since there is a lack in the literature about the use of magnesium electrodes in real wastewater electrochemical treatment, system efficiency was also evaluated using a sanitary landfill leachate, reaching 96% of phosphorus recovery. The specific energy consumption and faradaic efficiency of the phosphorus recovery process were also assessed.

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Production of struvite by magnesium anode constant voltage electrolytic crystallisation from anaerobically digested chicken manure slurry

Cited by 11 publications

References 49 publications

Removal of ammonium and phosphate from slaughterhouse wastewater by electrochemical method using magnesium electrodes

Removal of ammonium and phosphate from slaughterhouse wastewater by electrochemical method using magnesium electrodes

Ultrasonic and Electrocoagulation Technologies in Wastewater Treatment and Material Circulation

Electrochemical Recovery of Phosphorus from Simulated and Real Wastewater: Effect of Investigational Conditions on the Process Efficiency

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