The effect of anode degradation on energy demand and production efficiency of electrochemically precipitated struvite

Kékedy‐Nagy, László; Abolhassani, Mojtaba; Sultana, Ruhi; Anari, Zahra; Brye, Kristofor R.; Pollet, Bruno G.; Greenlee, Lauren F.

doi:10.1007/s10800-021-01637-y

Cited by 8 publications

(3 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The LCI data for the ECST production process were adopted from a bench-scale reactor with 16 L of simulated wastewater containing known concentrations of P and N [15,65]. The 2019 batch of ECST contained 3.3% N, resulting in 1 kg of ECST equaling 0.033 kg N, which substituted for 0.072 kg of urea.…”

Section: Struvite Production Systemmentioning

confidence: 99%

Assessment of Struvite as an Alternative Sources of Fertilizer-Phosphorus for Flood-Irrigated Rice

et al. 2022

Self Cite

View full text Add to dashboard Cite

Phosphorus (P) recovery from wastewaters as struvite (MgNH4PO4·6H2O) may be a viable alternative fertilizer-P source for agriculture. The objective of this study was to evaluate the economic and environmental implications of struvite as a fertilizer-P source for flood-irrigated rice (Oryza sativa) relative to other commonly used commercially available fertilizer-P sources. A field study was conducted in 2019 and 2020 to evaluate the effects of wastewater-recovered struvite (chemically precipitated struvite (CPST) and electrochemically precipitated struvite (ECST)) on rice yield response in a P-deficient, silt–loam soil in eastern Arkansas relative to triple superphosphate, monoammonium and diammonium phosphate, and rock phosphate. A life cycle assessment methodology was used to estimate the global warming potentials associated with rice produced with the various fertilizer-P sources. Life cycle inventory data were based on the field trials conducted with and without struvite application for both years. A partial budget analysis showed that, across both years, net revenues for ECST and CPST were 1.4 to 26.8% lower than those associated with the other fertilizer-P sources. The estimated greenhouse gas emissions varied between 0.58 and 0.70 kg CO2 eq kg rice−1 from CPST and between 0.56 and 0.81 kg CO2 eq kg rice−1 from ECST in 2019 and 2020, respectively, which were numerically similar to those for the other fertilizer-P sources in 2019 and 2020. The similar rice responses compared to commercially available fertilizer-P sources suggest that wastewater-recovered struvite materials might be an alternative fertilizer-P-source option for flood-irrigated rice production if struvite can become price-competitive to other fertilizer-P sources.

show abstract

Section: Struvite Production Systemmentioning

confidence: 99%

Assessment of Struvite as an Alternative Sources of Fertilizer-Phosphorus for Flood-Irrigated Rice

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…For a second method of struvite crystallization, electrochemical precipitation of struvite is achieved by electrochemically releasing Mg via a sacrificial Mg anode plate [14]. The creation of electrochemically precipitated struvite (ECST) avoids the chemical dosing that chemical struvite precipitation requires, while only an energy input for Mg dissolution is required.…”

Section: Introductionmentioning

confidence: 99%

Corn and Soybean Growth as Affected by Wastewater-Derived Struvite-Phosphorus Sources and Irrigation Water Types

Morrison,

Brye,

Drescher

et al. 2024

Self Cite

View full text Add to dashboard Cite

Struvite (MgNH 4 PO 4 •6H 2 O) produced synthetically from a stock solution of known phosphorus (P) and nitrogen (N) concentrations has been shown to be an effective, alternative fertilizer-P source for various crops, but little is known about the potential agronomic effectiveness of struvite created from an actual municipal wastewater source. The objective of this study was to evaluate the effects of soil [i.e., Creldon silt loam (Oxyaquic Fragiudalf) and Calloway silt loam (Aquic Fraglossudalf) series], fertilizer-P source [i.e., synthetically produced electrochemically precipitated struvite (ECSTsyn), real-wastewaterderived ECST (ECSTreal), chemically precipitated struvite (CPST), monoammonium phosphate (MAP), and an unamended control (UC)], and irrigation water type (i.e., tapwater and struvite-removed wastewater) on corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] growth and N, P, and magnesium (Mg) uptake in a 60-day, greenhouse potted-plant study. Crop growth and N, P, and Mg uptakes for the struvite treatments (i.e., CPST, ECSTsyn, and ECSTreal) were generally similar to or at least 1.2 times greater than MAP. The ECSTsyn material commonly had up to five times greater N, P, and Mg uptake in corn and soybean than any other fertilizer-P source. Struvite-removed wastewater resulted in at least 1.3 times lower dry matter and N, P, and Mg uptake than tapwater. Similar corn and soybean results from the struvite fertilizers among the various soil-water type combinations compared to MAP suggest that struvite generates similar crop responses as at least one widely used, commercially available, multi-nutrient fertilizer-P source.

show abstract

“…A more recently developed technique for precipitating struvite from wastewaters is electrochemical precipitation. Electrochemical precipitation of struvite is achieved by electrochemically releasing Mg via sacrificing a Mg anode plate [18]. Electrochemical precipitation avoids the chemical dosing that chemical struvite precipitation requires and instead requires only an energy input for Mg dissolution.…”

Section: Introductionmentioning

confidence: 99%

Runoff-Water Properties from Various Soils as Affected by Struvite-Phosphorus Source and Water Type

Morrison,

Brye,

Drescher

et al. 2023

JEP

Self Cite

View full text Add to dashboard Cite

Struvite (MgNH 4 PO 4 •6H 2 O) can be produced from municipal wastewater and has been shown to be an alternative fertilizer-phosphorus (P) source for various crops, but little is known about the runoff-water-quality implications from soil-applied struvite. The objective of this study was to evaluate the effects of soil [Creldon (Oxyaquic Fragiudalfs), Dapue (Fluventic Hapludolls), Roxana (Typic Udifluvents), and Calloway (Aquic Fraglossudalfs) series], fertilizer-P source [synthetically produced electrochemically precipitated struvite (ECSTsyn), real-wastewater-derived ECST (ECSTreal), chemically precipitated struvite (CPST), and monoammonium phosphate (MAP)], and water source (rainwater, groundwater, and struvite-removed real wastewater) over time on runoff-water-quality parameters from laboratory-conducted, rainfall-runoff simulations. Mesh tea bags containing each soil-fertilizer treatment combination were rained on with each water source (Trial 1), incubated for 6 months, and rained on again (Trial 2) to evaluate runoff-water quality. Struvite fertilizers had similar runoff-water-quality properties to those from MAP. In Trial 1, runoff total P (TP) concentration differences (i.e., soil-fertilizer-water-type response minus control response minus blank response) from ECSTsyn or ECSTreal were 1 to 5 times larger than MAP and CPST for all water-soil-fertilizer-P source treatment combinations, except for the Creldon-groundwater and Roxana-wastewater combinations. In both trials, runoff TP decreased over time in all water-soil and soil-fertilizer-P source treatment combinations, except for the Roxana-CPST combination where TP increased over time by 46%. The similar water-quality responses from the struvite fertilizers among the various soils and water types compared to MAP suggest that struvite has similar runoff-water-quality implications as at least one widely used, commercially available fertilizer-P source.

show abstract

The effect of anode degradation on energy demand and production efficiency of electrochemically precipitated struvite

Cited by 8 publications

References 64 publications

Assessment of Struvite as an Alternative Sources of Fertilizer-Phosphorus for Flood-Irrigated Rice

Assessment of Struvite as an Alternative Sources of Fertilizer-Phosphorus for Flood-Irrigated Rice

Corn and Soybean Growth as Affected by Wastewater-Derived Struvite-Phosphorus Sources and Irrigation Water Types

Runoff-Water Properties from Various Soils as Affected by Struvite-Phosphorus Source and Water Type

Contact Info

Product

Resources

About