2021
DOI: 10.1007/s12665-021-09447-3
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Mobilization of recalcitrant phosphorus from soil using citric acid wastewater

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Cited by 9 publications
(4 citation statements)
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“…One reason is that the activation of difficultly soluble nutrients in the soil by organic acids relies on acid dissolution, anion complexing, and competitive adsorption; the acidity of organic acids and the number of dissociated anions determine their ability to activate nutrients ( Li et al., 2014 ; Yang and Antonietti, 2020 ). Among the three organic acid treatments, citric acid has the strongest effect on phosphorus activation in alkaline soils, possibly because a large number of organic anions generated from citric acid dissociation dissolve the phosphorus that precipitated in the soil solution, aluminum, and iron; in addition, they compete for phosphorus adsorption sites in silicate minerals, effectively mobilizing the release of inorganic-bound nutrients ( Wang, 2021 ; Wu et al., 2021b ). Humic acid and fulvic acid are absorbent materials, and fulvic acid has more acidic active groups and a stronger adsorption effect on nitrogen and phosphorus than humic acid.…”
Section: Discussionmentioning
confidence: 99%
“…One reason is that the activation of difficultly soluble nutrients in the soil by organic acids relies on acid dissolution, anion complexing, and competitive adsorption; the acidity of organic acids and the number of dissociated anions determine their ability to activate nutrients ( Li et al., 2014 ; Yang and Antonietti, 2020 ). Among the three organic acid treatments, citric acid has the strongest effect on phosphorus activation in alkaline soils, possibly because a large number of organic anions generated from citric acid dissociation dissolve the phosphorus that precipitated in the soil solution, aluminum, and iron; in addition, they compete for phosphorus adsorption sites in silicate minerals, effectively mobilizing the release of inorganic-bound nutrients ( Wang, 2021 ; Wu et al., 2021b ). Humic acid and fulvic acid are absorbent materials, and fulvic acid has more acidic active groups and a stronger adsorption effect on nitrogen and phosphorus than humic acid.…”
Section: Discussionmentioning
confidence: 99%
“…The composite application of organic acids and bio-based materials, with their unique physical structure and chemical function, effectively slowed down the leaching process of organic acid components, overcame the effects of soil salinity and other adversities in a short period of time, increased the saline and alkaline nutrient reservoirs, accelerated the decomposition of the organic matter in the soil and the bio-based materials, and released the necessary nutrients for soil microbial uptake and utilization (Wang, 2021;Xiao et al, 2022). If scientifically applied to mudflat soils not only promotes the growth and metabolism of soil bacteria, but also positively influences bacterial community diversity (Wang et al, 2015;Matteo et al, 2022).…”
Section: Introductionmentioning
confidence: 99%
“…In addition to this, upon decomposition of RS, silicate ions (SiO 4− 4 ) are released. Silicate and phosphate ions compete with one another in solution for adsorbing sites on Al or Fe complexes, leading to the formation of Fe/Al-silicate and liberation of phosphate in the soil (Wang, 2021). According to Nwoke et al (2004), the impact of organic residues on P availability varied and was influenced by both the composition of the organics and the soil's properties.…”
Section: Introductionmentioning
confidence: 99%