Dissolution rate and agronomic effectiveness of struvite fertilizers – effect of soil pH, granulation and base excess

Plant and Soil, Journal Year: 2016, Volume and Issue: 410(1-2), P. 139 - 152

Published: July 21, 2016

Language: Английский

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A Review of the Latest in Phosphorus Fertilizer Technology: Possibilities and Pragmatism

Journal of Environmental Quality, Journal Year: 2019, Volume and Issue: 48(5), P. 1300 - 1313

Published: Aug. 8, 2019

The development of highly concentrated phosphorus (P) fertilizers, such as triple superphosphate, by the Tennessee Valley Authority helped mark beginning a revolution in way we manage food crop nutrition. Since then, scientists, with help farmers, have made great advancements understanding P fate and transport across many environments but largely failed to produce new generation products and/or application techniques that are widely accepted vastly improve plant acquisition efficiency. Under certain conditions, important been made. For example, applying liquid formulations phosphates lieu dry granules some calcareous soils has dramatically reduced precipitation sparingly soluble calcium phosphate minerals, other attempts, co‐application humic substances, sorption layered double hydroxides, or use nanoparticles, not generated kind results necessary continue economically increasing yields without further environmental cost. New sources fertility will need be affordable produce, transport, furnish soil solution manner well synchronized demand. This paper provides review recent literature on cutting‐edge fertilizer technology. goal is this synthesis used starting point from which larger discussion responsible nutrient management increased efficiency research can built. Core Ideas Reaction constituents limits availability yield. A variety approaches being explored. Ideally, should More innovation along mechanistic field‐scale trials required.

Language: Английский

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A review and meta‐analysis of the agricultural potential of struvite as a phosphorus fertilizer

Soil Science Society of America Journal, Journal Year: 2020, Volume and Issue: 84(3), P. 653 - 671

Published: March 6, 2020

Abstract The low water solubility of struvite is thought to limit its agronomic utility as a phosphorus (P) fertilizer compared with highly soluble P fertilizers. Furthermore, struvite's potential complicated by hypothesized soil pH‐dependent solubility, crop‐specific interactions, and limited availability struvite‐derived N, which may explain conflicting reports crop responses conventional A systematic literature review meta‐analysis was conducted evaluate the effects pH, test (STP), rate, particle size, N on aboveground biomass, concentration, uptake, uptake. Struvite‐fertilized plants yielded higher uptake ammonium phosphates, superphosphates in soils pH < 6 decreased increasing pH. Crop were inversely related experiment duration mass ratios (d kg −1 ) used greenhouse studies, opposite benefit more roots per unit dissolution. proportion total applied derived from increased struvite‐P application rate likely due reliance slowly available struvite‐N. potentially overestimated high STP and/or rates underestimated limitation large proportions struvite. Evaluations collectively indicate efficacy affected contribution application.

Language: Английский

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Options for Improved Phosphorus Cycling and Use in Agriculture at the Field and Regional Scales

Journal of Environmental Quality, Journal Year: 2019, Volume and Issue: 48(5), P. 1247 - 1264

Published: Aug. 15, 2019

Soil phosphorus (P) cycling in agroecosystems is highly complex, with many chemical, physical, and biological processes affecting the availability of P to plants. Traditionally, fertilizer recommendations have been made using an insurance‐based approach, which has resulted accumulation intensively managed agricultural soils worldwide contributed widespread water quality issue eutrophication. To mitigate further environmental degradation because future supplies are threatened due finite phosphate rock resources associated geopolitical issues, there immediate need increase use efficiency (PUE) agroecosystems. Through cultivar selection improved cropping system design, contemporary research suggests that sufficient crop yields could be maintained at reduced soil test (STP) concentrations. In addition, more efficient field scale can achieved through agroecosystem management increases organic matter mineralization optimizes arbuscular mycorrhizal fungi (AMF) symbioses. This review paper provides a perspective on how agriculture potential utilize plant microbial traits improve PUE accordingly, maintain lower STP It also links tighten cycle regional scale, including discussion recovery recycling technologies, particular focus struvite as recycled fertilizer. Guidance directions for provided. Core Ideas There urgent Crop than recommended Both quantity influence availability. Further ability supply crops needed. Struvite fill important niche recycling.

Language: Английский

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Technologies for Recovering Nutrients from Wastewater: A Critical Review

Environmental Engineering Science, Journal Year: 2019, Volume and Issue: 36(5), P. 511 - 529

Published: March 7, 2019

Phosphorus (P) is a non-renewable resource, production of nitrogen (N) fertilizer energy intensive, and discharge these nutrients in treated wastewater causes environmental eutrophication. Hence, recovery from municipal has attracted attention. In this article, current technologies for such are reviewed, with synthesis terms characteristics, goals, effluent limits, constraints on chemical usage, treatment plant scale, operational complexity applicability, analysis demands. processes applicable centralized plants include enhanced biological phosphorus removal (EBPR) combined electrochemical struvite precipitation alone, whereas ion exchange (IE) may be adapted to onsite packaged plants. Many can used N concentration; however, been reported only by acid absorption following separation gas stripping or permeable membrane. Only produce requiring minimal post-processing beyond filtration. Electrochemical calcium phosphate further capable addition. Direct microbiological as protein an emerging technology, algal being developed livestock fuel production. Although reactive filtration achieve very low P concentrations, the individually removing secondary below 10 μg/L, example, surficial waters, were adsorption IE. Several authors point EBPR currently preferred approach, development appears warranted.

Language: Английский

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Phosphorus in soils and plants – facing phosphorus scarcity

Plant and Soil, Journal Year: 2016, Volume and Issue: 401(1-2), P. 1 - 6

Published: March 3, 2016

Language: Английский

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Environmental impacts of phosphorus recovery from a “product” Life Cycle Assessment perspective: Allocating burdens of wastewater treatment in the production of sludge-based phosphate fertilizers

The Science of The Total Environment, Journal Year: 2018, Volume and Issue: 656, P. 55 - 69

Published: Nov. 24, 2018

Language: Английский

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Improved Phosphorus Recycling in Organic Farming: Navigating Between Constraints

Advances in agronomy, Journal Year: 2017, Volume and Issue: unknown, P. 159 - 237

Published: Nov. 21, 2017

Language: Английский

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Co-Pyrolysis of Poultry Litter and Phosphate and Magnesium Generates Alternative Slow-Release Fertilizer Suitable for Tropical Soils

ACS Sustainable Chemistry & Engineering, Journal Year: 2017, Volume and Issue: 5(10), P. 9043 - 9052

Published: Sept. 4, 2017

Monoammonium phosphate (MAP), triple superphosphate (TSP), and phosphoric acid (H3PO4), with without the addition of magnesium oxide (MgO), were mixed poultry litter (PL) to produce biochar-based fertilizers (BBFs). This is a novel approach aiming add value PL residue increase P use efficiency in acidic tropical soils. Samples BBFs assessed by P-release kinetics water, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), bioassay maize greenhouse using clayey Oxisol. Addition MgO reduced released from impregnated all sources. XRD analysis showed formation low-solubility Ca2P2O7 Mg2P207 compounds, which supported P—O—P or P═O stretching observed FTIR spectra. The MgO-treated increased shoot dry matter production compared control, but inferior when TSP short term. slow release alkaline reaction show great potential for these materials be used as enhanced

Language: Английский

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A systematic comparison of commercially produced struvite: Quantities, qualities and soil-maize phosphorus availability

The Science of The Total Environment, Journal Year: 2020, Volume and Issue: 756, P. 143726 - 143726

Published: Nov. 24, 2020

Production of struvite (MgNH4PO4·6H2O) from waste streams is increasingly implemented to recover phosphorus (P), which listed as a critical raw material in the European Union (EU). To facilitate EU-wide trade P-containing secondary materials such struvite, EU issued revised fertilizer regulation 2019. A comprehensive overview supply and its quality presently missing. This study aimed: i) determine current production volumes, ii) evaluate all legislated physicochemical characteristics pathogen content against newly set regulatory limits, iii) compare not-regulated characteristics. It estimated that 2020, between 990 1250 ton P are recovered EU. Struvite 24 plants, accounting for 30% 80 installations worldwide was sampled. Three samples failed legal limits; one had <7% three exceeded organic carbon 3% dry weight (DW). Mineralogical analysis revealed six 80–90% DW, 13 >90% DW. All showed heavy metal below limits. Microbiological analyses indicated may exceed certain Differences morphology particle size distribution were observed sourced digestate (rod shaped; transparent; 82 mass% < 1 mm), dewatering liquor (spherical; opaque; 65 1–2 mm) effluent upflow anaerobic sludge blanket reactor processing potato wastewater 51 mm 34 > 2 mm). uniform soil-plant P-availability pattern 3.5–6.5 mg P/L soil/d over 28 days sampling period observed. No differences plant biomass yield In conclusion, results highlight suitability most enter market.

Language: Английский

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