Effect of phosphogypsum application on aluminum speciation in acid pasture soils

Bouray, Moussa; Moir, James L.; Condron, Leo M.; Lehto, Niklas J.; Bayad, Mohamed; Gharous, Mohamed El; Mejahed, Khalil El

doi:10.1007/s11368-022-03215-x

Cited by 6 publications

(4 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This could be attributed to the mechanism of Al displacement on soil exchange sites via Ca 2+ , followed by Al 3+ complexation with SO 4 2− and F − in the soil solution. This view is supported by the finding of a recent study conducted by Bouray et al (2022). However, higher PG rates should be avoided on acid soils because it may further acidify the soil and thus solubilize Al, as evidenced by the resulting increase in exchangeable Al at 9 t of PG ha −1 compared to 0 and 3 t of PG ha −1 in the present study.…”

Section: Discussionsupporting

confidence: 90%

“…The utilization of PG in agriculture as an amendment has become a topic of considerable interest, not only because of its potential benefits but also because of concerns regarding its handling, storage, and recycling. For instance, PG has been widely used to ameliorate physical and chemical properties of degraded soils, including salinesodic soils (Outbakat et al, 2022) and acid soils (Bouray et al, 2022). Phosphogypsum contains soluble and insoluble elements and impurities.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Does phosphogypsum addition affect phosphate rock dissolution in acid soils?

Bouray

Moir

Mejahed

et al. 2023

Front. Environ. Sci.

Self Cite

View full text Add to dashboard Cite

The direct application of phosphate rock (PR) has been found suitable for acidic soils. Still, efforts are needed to improve its reactivity to match grassland P demand. This research aimed to investigate changes in the dissolution of two Moroccan sedimentary PRs (Ben Guerir and Khouribga) in response to four rates of phosphogypsum (PG)—a by-product of the phosphate fertilizer industry. We conducted a 60-day incubation study using two acid soils from New Zealand. The soils were treated with PRs at 100 mgP kg−1 of soil either alone or combined with PG, which was applied at 0, 1, 3 and 9 t ha−1 (approximately the equivalent of 0, 0.9, 2.7, and 8.1 g of PG kg−1 of soil, respectively). The dissolution rates were determined from the differences in residual calcium (Ca) extracted with 1 M HCl. Soil pH, Olsen P, exchangeable aluminium (Al) and Ca and Ca saturation were analyzed at the end of the experiment. Phosphate rocks and PG’s physicochemical properties were characterized. Phosphogypsum addition increased Olsen P by 34% and 59% at 9 t ha−1 compared to 0 t ha−1 in Molesworth and Lindis Peaks soils, respectively. However, PG did not affect the dissolution of PRs in the different of soil types. Khouribga PR was more reactive than Ben Guerir PR, especially in the Molesworth soil where soil pH and base saturation were lower and P retention was higher compared to Lindis Peaks soil. Particle size distribution was the key factor that contributed to the observed greater reactivity of the Khouribga PR. Both PRs showed dissolution rates >50%, suggesting their suitability for direct application on acid soils. Being an important source of sulphur and some P, PG if combined with PR, can promote and complement PR’s direct use as fertilizer on acid soils. Moreover, the development of new fertilizer products by combining these two materials should be encouraged.

show abstract

Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Does phosphogypsum addition affect phosphate rock dissolution in acid soils?

Bouray

Moir

Mejahed

et al. 2023

Front. Environ. Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The higher pH in the presence of GMS-C can be attributed to the partial shell calcination, a process that can provide a faster reaction with the soil (Pap et al 2022). The increase in pH to 5.2 led to a reduction of Al 3+ from 3.3 to 0 mmol dm -3 , which occurs when Al 3+ reacts with OHions, changing from Al 3+ to Al(OH) 3 , which is insoluble in water, also contributing to reducing potential acidity (Rheinheimer et al 2000, Bouray et al 2022. This behavior relative to Al 3+ was not observed in the sandy soil, with pH 5.2 and absent aluminum, without the introduction of amendments.…”

Section: Resultsmentioning

confidence: 92%

Can golden mussel shell be an alternative to limestone in soil correction?

Boni,

Maltoni,

Souza

et al. 2023

Pesqui. Agropecu. Trop.

View full text Add to dashboard Cite

Golden mussel is an invasive species in South America that causes environmental and economic damage due to the formation of large colonies without natural predators. This study aimed to test the agricultural use of golden mussel shell as a limestone substitute, as the shell is rich in calcium carbonate. The experiment was carried out in pots, with eight treatments (sandy soil; clay soil; sandy soil + 1.0 Mg ha−1 of limestone; clay soil + 1.0 Mg ha−1 of limestone; sandy soil + 1.0 Mg ha−1 of fresh shell; clay soil + 1.0 Mg ha−1 of fresh shell; sandy soil + 1.0 Mg ha−1 of calcined shell; clay soil + 1.0 Mg ha−1 of calcined shell), in addition to the application of the following fresh and calcined shell doses: 0, 1.0, 1.5 and 2.0 Mg ha−1. Rice was cultivated in all treatments, and the soil fertility and rice shoot and root dry masses were evaluated. The shell provided good chemical conditions to the soils and raised their pH and phosphorus and calcium contents. The agricultural use of golden mussel shell showed to be efficient for soil correction and can be considered an alternative to limestone.

show abstract

“…Bases with a thickness of more than 25 cm are arranged in two layers. Arrangement of a foundation made of phosphogypsum, which has high binding properties and can be used for the construction of low-strength road foundations, replacing traditional materials -sand and crushed stone [12][13][14][15].…”

Section: Use Of Phosphogypsum For Arrangement Of the Bases And Coatin...mentioning

confidence: 99%

Use of Phosphogypsum for Construction and Repair of Motor Roads

Krayushkina,

Dubyk,

Talavira

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Current economic relations show that the market for road construction materials needs competitive products of relatively low cost. Such products can be obtained, inter alia, using local natural raw materials, industrial waste and processing. The article is devoted to the current topic of using industrial waste in the field of road construction for the purpose of recycling and rational use of traditional road building materials. In recent years, against the backdrop of a significant increase in road construction, options for using phosphogypsum for the construction of roads of all categories are being actively proposed. Currently, about 50 million tons of phosphogypsum have been accumulated in the dumps of industrial enterprises, and these numbers are increasing every year. Phosphogypsum is calcium sulfate dihydrate and can be used as a binder for strengthening soils, constructing foundations, during repair work, in asphalt concrete and cement concrete mixtures. The use of phosphogypsum is possible both in its pure form and modified to improve the performance properties of the final product. The article presents the positive results of experiments on the use of phosphogypsum modified with sulfur in crushed stone-sand mixtures for the construction of foundations, asphalt concrete and cement concrete mixtures. The purpose of this study is to analyze ways to reduce the cost of construction, reconstruction and major repairs of low-category roads by using production and consumption waste in the structural layers of road pavements.

show abstract

Effect of phosphogypsum application on aluminum speciation in acid pasture soils

Cited by 6 publications

References 74 publications

Does phosphogypsum addition affect phosphate rock dissolution in acid soils?

Does phosphogypsum addition affect phosphate rock dissolution in acid soils?

Can golden mussel shell be an alternative to limestone in soil correction?

Use of Phosphogypsum for Construction and Repair of Motor Roads

Contact Info

Product

Resources

About