Phosphorus sorption kinetics in different types of alkaline soils

Hamdi, Wissem; Pelster, David E.; Seffen, Mongi

doi:10.1080/03650340.2013.830287

Cited by 17 publications

(17 citation statements)

References 30 publications

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“…It can be suggested that the presence of three phases in adsorption of P may be explained as follow: the first phase is characterized by a high rate of adsorption, then the rate reduces linearly (second phase) until the slow adsorption phase starts. The same results were revealed by Hamdi et al (2014). The fast adsorption rate at the initial stage may be explained by an increased availability in the number of active binding sites on the soil surface.…”

Section: Contact Time Effectsupporting

confidence: 75%

“…The batch adsorption experiments were carried out in 250 mL Erlenmeyer flasks where 1 g of each soil sample and 100 mL of the P, P-KCl, P-NaCl, P-CaCl 2 with concentration of 100 mg L -1 of P (Hamdi et al 2014) were prepared with KH2PO4, and 0.01 M of KCl, NaCl and CaCl 2 . The Erlenmeyer flasks were subsequently capped and agitated in an isothermal shaker at 100 rpm and 293 ± 2 K to achieve equilibration at 24 h. A volume of 5 mL of P, P-KCl, P-NaCl, P-CaCl 2 solutions was sampled from Erlenmeyer flasks, centrifuged at 2800(g) for 10 min and the supernatant was immediately analyzed for P using the double-beam UV-Vis spectrophotometer (Shimadzu, Model UV 1601, Japan) at 868 nm (Watanabe and Olsen.…”

Section: Experimental Adsorption Studymentioning

confidence: 99%

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Effects of salts on phosphorus adsorption in alkalize Tunisian soil

Beji

Hamdi

Kesraoui

et al. 2017

Euro-Mediterr J Environ Integr

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Many previous studies have been conducted in an attempt to determine phosphorus (P) adsorption in soil. Often, these studies cannot be compared, because the reports did not give a satisfactory characterization of the dynamics of soil P in saline conditions. In our experiment, three salts extracts (CaCl 2 , NaCl and KCl) with the same concentration (0.01 M) were used to determine the amount of P adsorption in Solonetz soil samples of the semi-arid areas of Kondar region (Tunisia). Also, we focused on the influence of contact time on P-Salts adsorption in the alkalize soil. The analytic data were approached from the following kinetics' models: pseudo first order, pseudo second order and Elovich model. Results obtained showed that salts addition increased significantly the amount of P adsorption with the following order of salts extracts (PCaCl 2 [ P-NaCl [ P-KCl [ P). The mechanism of phosphate ions adsorption by soil was studied using IR spectroscopy. Infrared spectral characteristics of the amorphous material indicated that the adsorption is due to exchange phenomena of phosphate ions with surface groups. It was also demonstrated that the addition of CaCl 2 salt caused a shift and an increase of OH, Si-O (Si-O-Si, Si-O-Al) and Al-OH absorption bands which favored the adsorption of P ions. Moreover, the second-order model was shown to be the best fit for describing phosphorus adsorption associated with different salts, as seen from the correlation coefficient R2 which ranged from 0.98 to 0.99.

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Section: Contact Time Effectsupporting

confidence: 75%

Section: Experimental Adsorption Studymentioning

confidence: 99%

Effects of salts on phosphorus adsorption in alkalize Tunisian soil

Beji

Hamdi

Kesraoui

et al. 2017

Euro-Mediterr J Environ Integr

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“…Increase in soil pH leads to soil particle surface more negatively charged, thus increasing anion repulsion and decreasing P sorption (Abdala et al, 2012; Xu et al, 2014). The higher organic matter would reduce P sorption capacity due to competition for sorption sites between phosphate and organic ligands on soil (Hamdi et al, 2014; Pizzeghello et al, 2011). This was true for the higher application rate of manure at 5%, where P release increased with increasing incubation time (Fig.…”

Section: Resultsmentioning

confidence: 99%

Phosphorus Release from Dairy Manure, the Manure-Derived Biochar, and Their Amended Soil: Effects of Phosphorus Nature and Soil Property

et al. 2014

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Land application of animal manure often risks excessive phosphorus (P) release into the surrounding water. The aim of this study was to convert the dairy manure into biochar, followed by their application into soil, and then to investigate P release from the manure and its derived biochar as well as from the manure- and biochar-amended soil. The results showed that P release was reduced when the manure was converted into biochar due to formation of less-soluble whitlockite [(Ca, Mg)(PO)]. The cumulative P released from biochar over 240 h was 0.26 g kg, a 76% reduction of that from the manure (1.07 g kg). The kinetic release of P from the manure was determined by the fast desorption process and was better fitted to Elovich equation, whereas P release from biochar was initially controlled by the diffusion process and then by slow but steady dissolution of (Ca,Mg)(PO), following the parabolic diffusion and linear models, respectively. When the manure or biochar was incorporated into the soil, P release in the CaCl and simulated acid rain water extraction from biochar-amended soil was consistently lower than that from the manure-amended soil during 210-d incubation. The lower P release in the biochar-amended soil was determined by stable P form (Ca, Mg)(PO) in the biochar itself, but less from the soil property effect. Results indicated that initial high P release from manure can be mitigated by converting the manure into biochar.

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“…Terms & Conditions of access and use can be found at http:// www.tandfonline.com/page/terms-and-conditions Introduction Phosphorus (P) is one of the most important elements in plant nutrition. It is responsible for plant growth and development as it plays key roles in plant metabolism, structure and energy transformation (Raghothama & Karthikeyan 2005;Hamdi et al 2014). It can be taken up only in anionic forms as H 2 PO 4 -and HPO 4 -2 .…”

Section: Please Scroll Down For Articlementioning

confidence: 99%

Organic matter effects on phosphorus sorption in sandy soils

Dębicka

Kocowicz

Weber

et al. 2015

Archives of Agronomy and Soil Science

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Phosphorus (P) sorption processes in soils contribute to important problems in agriculture: a deficiency of this plant nutrient, and eutrophication in aquatic systems. Soil organic matter (SOM) plays a major role in sorption processes, but its influence on P sorption remains unclear and needs to be elucidated to improve the ability to effectively manage soil P. The aim of this research was to investigate the influence of SOM on P sorption. The study was conducted in sandy soil profiles, and in topsoils before and after removal of SOM with H 2 O 2 .The results were interpreted with the Langmuir and Freundlich isotherms. Our results indicated that SOM affected P sorption in sandy soils, but that P sorption also depended on specific soil properties (e.g. values of degree of P saturation (DPS), P sorption capacity (PSC) and pH) often related to land use. Removal of SOM decreased P sorption capacity in most of the topsoils tested; other soil properties became important in controlling P sorption. An increase in P desorption observed after SOM removal indicated that SOM was potentially that soil constituent which increased P binding and limited P leaching from these sandy soils.

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Phosphorus sorption kinetics in different types of alkaline soils

Cited by 17 publications

References 30 publications

Effects of salts on phosphorus adsorption in alkalize Tunisian soil

Effects of salts on phosphorus adsorption in alkalize Tunisian soil

Phosphorus Release from Dairy Manure, the Manure-Derived Biochar, and Their Amended Soil: Effects of Phosphorus Nature and Soil Property

Organic matter effects on phosphorus sorption in sandy soils

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