TiO2-WO3 activated weathered lignite coating phosphate fertilizer to improve longitudinal migration efficiency

An, Tong; Qin, Yan; Cheng, Hao; Wu, Jianning; Su, Weihua; Meng, Guihua; Wei, Hongxiao; Sun, Chenglin; Li, Yong; Guo, Xuhong

doi:10.1016/j.jclepro.2022.131549

Cited by 8 publications

(7 citation statements)

References 48 publications

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“…The vertical distribution of soil available P is a key index to measure crop growth and evaluate the effectiveness of P fertilizer [ 30 ]. The available P levels of soil at different depths can be determined by soil column leaching experiments [ 31 ]. As shown in Figure 9 , there was no significant difference between the available P content of PSNP and that of ADP in soil at a depth of 0 to 10 cm.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Novel Biodegradable Polymer Slow-Release Fertilizers to Improve Nutrient Release Performance and Soil Phosphorus Availability

et al. 2023

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Inspired by the gradual collapse of carbon chain and the gradual release of organic elements into the external environment during the degradation of biodegradable polymers, a novel biodegradable polymer slow-release fertilizer containing nutrient nitrogen and phosphorus (PSNP) was prepared in this study. PSNP contains phosphate fragment and urea formaldehyde (UF) fragment, which are prepared by solution condensation reaction. Under the optimal process, the nitrogen (N) and P2O5 contents of PSNP were 22% and 20%, respectively. The expected molecular structure of PSNP was confirmed by SEM, FTIR, XRD, and TG. PSNP can release N and phosphorus (P) nutrients slowly under the action of microorganisms, and the cumulative release rates of N and P in 1 month were only 34.23% and 36.91%, respectively. More importantly, through soil incubation experiment and leaching experiment, it was found that UF fragments released in the degradation process of PSNP can strongly complex soil high-valence metal ions, thus inhibiting the phosphorus nutrient released by degradation to be fixed in the soil and ultimately effectively increasing the soil available P content. Compared with ammonium dihydrogen phosphate (ADP), a small molecule phosphate fertilizer that is easily soluble, the available P content of PSNP in the 20–30 cm soil layer is almost twice that of ADP. Our study provides a simple copolymerization method to prepare PSNP with excellent slow-release N and P nutrients, which can promote the development of sustainable agriculture.

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Section: Resultsmentioning

confidence: 99%

Preparation of Novel Biodegradable Polymer Slow-Release Fertilizers to Improve Nutrient Release Performance and Soil Phosphorus Availability

et al. 2023

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“…Third, HA can form stable and water-soluble phosphate-metal-HA complexes, which aid in reducing P fixation and improving P availability [22]. Meanwhile, previous research has also demonstrated that HA can promote P migration in soil [25,26], which is beneficial to the absorption of fertilizer P by roots [6].…”

Section: Introductionmentioning

confidence: 99%

“…Meanwhile, the high affinity of P for the soil solid phase also results in the poor migration of fertilizer P in soil [5]. As a result, a substantial amount of fertilizer P is not absorbed and utilized by plants [6,7], reducing P use efficiency and agricultural productivity [8,9]. To address this issue, various agents have been developed, such as coated controlled-release phosphate fertilizers [10], phosphate fertilizers containing humic acid (HA)-metal-phosphate complexes [11], biological phosphate fertilizers [12], HA-or alginic acid-enhanced phosphate fertilizers [13], and other modified phosphate fertilizers [14].…”

Section: Introductionmentioning

confidence: 99%

Effects of Incorporating Different Proportions of Humic Acid into Phosphate Fertilizers on Phosphorus Migration and Transformation in Soil

et al. 2023

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Incorporating humic acid (HA) into phosphate fertilizers to produce HA-enhanced phosphate fertilizers (HAPs) can improve the migration and availability of fertilizer-derived phosphorus (P) in soil. However, the optimal proportion of HA remains inconsistent. Here, we investigated the effects of HAPs with different HA proportions (0.1–10% w/w) on water-soluble P fixation rate, P migration, P transformation, and soil microorganisms, and analyzed the main P forms in HAP using Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. The results showed that incorporating 0.1% HA had no impact on P migration and transformation, whereas incorporating 0.5–10% HA increased the migration distance and cumulative migration of fertilizer-derived P by 0–5 mm and 17.1–30.3%, respectively, compared with conventional phosphate fertilizer (CP). Meanwhile, HAPs with 0.5–10% HA significantly reduced the water-soluble P fixation rate by 18.3–25.6%, and significantly increased the soil average available P (AP) content in 0–40 mm soil layer around the P application site by 6.2–12.9% relative to CP, partly due to the phosphate monoesters in HAPs. Clustering analysis revealed that 0.5% HA had similar effects relative to higher HA proportions (1% and 5%), and the inhibition of HAP with 0.5% HA on bacteria and fungi was also greater than that of CP due to the high concentration of soil P. Overall, 0.5% was determined to be the optimal amount of HA for HAP production, which provided a theoretical basis for the development of high-efficiency phosphate fertilizer.

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“…Phosphate fertilizers can be readily adsorbed on the soil surface, resulting in a relatively lower migration rate to the roots of the plants. This results in an inefficient absorption and low bioavailability of the nutrients provided by the phosphorus fertilizer [14]. P uptake efficiency by conventional mineral fertilizers is reported to be in the 5 -30 % range, resulting an excessive use of phosphate fertilizers.…”

Section: Introduction *mentioning

confidence: 99%

An Evaluation of Phosphogypsum (PG) -Derived Nanohydroxyapatite (HAP) Synthesis Methods and Waste Management as a Phosphorus Source in the Agricultural Industry

Avşar¹,

Gezerman²

2023

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As a raw material, phosphorus availability in agriculture has been a critical concern in terms of phosphate rock consumption related to a price-dependent supply-demand chain. Novel approaches have been proposed for alternative phosphorus sources in agricultural applications. Although nano-hydroxyapatite (nHA) is a commonly used bioceramic material, its utilization as an alternative phosphorus fertilizer is an emerging field. Phosphogypsum (PG), a by-product of wet process phosphoric acid production, is a promising raw material for nHA production. With an approximate 300 Mton annual accumulation rate of PG puts pressure on the research for introducing alternative strategies for the resource utilization of legacy PG piles in an environment-friendly and cost-efficient manner. Valorization of PG as the calcium and phosphorus precursor in nHA production would both provide an efficient waste management strategy and low-cost raw material. This study gives a brief review of the various synthesis routes on PG-derived nHA and criticizes nHA utilization as a phosphorus fertilizer.

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TiO2-WO3 activated weathered lignite coating phosphate fertilizer to improve longitudinal migration efficiency

Cited by 8 publications

References 48 publications

Preparation of Novel Biodegradable Polymer Slow-Release Fertilizers to Improve Nutrient Release Performance and Soil Phosphorus Availability

Preparation of Novel Biodegradable Polymer Slow-Release Fertilizers to Improve Nutrient Release Performance and Soil Phosphorus Availability

Effects of Incorporating Different Proportions of Humic Acid into Phosphate Fertilizers on Phosphorus Migration and Transformation in Soil

An Evaluation of Phosphogypsum (PG) -Derived Nanohydroxyapatite (HAP) Synthesis Methods and Waste Management as a Phosphorus Source in the Agricultural Industry

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