Metal-Induced Sulfate Adsorption by Soils

Ajwa, Husein A.; Tabatabai, M. A.

doi:10.1097/00010694-199510000-00007

Cited by 17 publications

(2 citation statements)

References 63 publications

(124 reference statements)

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“…It is possible that less potent antimicrobials may suffice in combination with pasteurisation of the soil suspensions [42,50]. Other factors worthy of investigation include: 1) eliminating HCO 3 -and CO 2 from the system, which may interact with suspension pH to affect acid:base stoichiometry; 2) the effect of added K + (as KH 2 PO 4 )-though the apparent indifference of the measured net H + :P co-adsorption ratios to additions of KH 2 PO 4 and H 3 PO 4 -argues that any such effect may be relatively small; 3) our samples contained small amounts of organic fragments whose impact on soil pH [51] was unknown [52]; 4) measuring anions competitively desorbed by the P additions, e.g., sulfate [53][54][55]; and, 5) H 3 PO 4 additions may allow ΔpH values to conveniently access net H + balance in soil suspensions. Soil acidity is a critical issue pertaining to agriculture within an Australian context [24] and also more widely [56,57].…”

Section: General Discussion and Recommendationsmentioning

confidence: 95%

A Methodology to Estimate Net Proton: Phosphorus Co-Adsorption Ratios for Acidic Soils

Taglieri¹,

Milham²,

Holford³

et al. 2020

Advances in Chemical Research

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Despite extensive research, the behaviour of the key nutrient element, phosphorus (P), in soil is not yet fully understood. This study focussed on the outstanding issue of the coadsorption of protons (H + ) and P by soils. We developed a congruent set of measures to determine the net H + :P co-adsorption ratio and tested it on goethite, for which a ratio of 1.6:1 had been estimated under CO 2 -free conditions for additions of NaH 2 PO 4 . Under our conditions, and using additions of KH 2 PO 4 , the net H + :P co-adsorption ratio was estimated to be 1.44:1, i.e., in passable agreement with the published value. Application of the protocol to acidic soils resulted in a net H + :P co-adsorption ratio of 1.92:1, and substitution of H 3 PO 4 for KH 2 PO 4 gave a ratio of 1.96:1. These ratios for soils differ significantly from that for goethite. The soils for which we estimated net H + :P co-adsorption ratios had a wide range of properties and two had received previous applications of P fertiliser (Ca(H 2 PO 4 ) 2 ), which does not appear to have affected the net H + :P co-adsorption ratios. The H + :P co-adsorption

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Section: General Discussion and Recommendationsmentioning

confidence: 95%

A Methodology to Estimate Net Proton: Phosphorus Co-Adsorption Ratios for Acidic Soils

Taglieri¹,

Milham²,

Holford³

et al. 2020

Advances in Chemical Research

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“…Dengan menghubungkan nilai PZC dan pH aktual sedimen, dapat diketahui peranan dari sedimen tersebut dalam mengadsorpsi ataupun mendesorpsi anion ke badan air. Jika nilai pH aktual dari sedimen lebih kecil daripada nilai PZC, maka permukaan sedimen akan memiliki muatan positif sehingga lebih dominan untuk mengadsorpsi anion dibandingkan kation [16,18,19]. Nilai PZC dari beberapa mineral sedimen dapat dilihat pada Tabel 3 [9].…”

Section: Karakterisasiunclassified

Kajian Fisiko-Kimia Sedimen Perairan dan Pengaruhnya Terhadap Ketersediaan Cl-, CO32-/HCO3- dan SO42- di Badan Air DAS Sumber Brantas

Bire

Rumhayati

Atikah

2015

Nat-B

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Penelitian mengenai kajian fisiko-kimia sedimen perairan terhadap ketersediaan ion Cl-, CO3 2-/HCO3dan SO4 2di badan air DAS Sumber Brantas telah dilakukan. Sampel sedimen diambil dari outlet DAS Sumber Brantas, Desa Sumber Brantas, Batu pada bulan Juli hingga September 2014 pada lima titik lokasi. Penentuan pH sedimen menggunakan pH meter, penentuan komposisi sedimen dengan metode pipet, penentuan ion Clsecara argentometri, ion SO4 2secara turbidimetri dan ion CO3 2-/HCO3secara titrasi asam basa. Hasil penelitian menunjukkan bahwa sedimen perairan DAS Sumber Brantas tergolong masam dan didominasi oleh fraksi pasir. Distribusi anion di sedimen DAS Sumber Brantas adalah HCO3-> SO4 2-> Cl-> CO3 2yang juga dipengaruhi oleh nilai Ksp dari tiap ion tersebut.

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Sulfate removal from aqueous solutions by hydrous iron oxide macroscopic, thermal and spectroscopic analyses

et al. 2007

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Metal-Induced Sulfate Adsorption by Soils

Cited by 17 publications

References 63 publications

A Methodology to Estimate Net Proton: Phosphorus Co-Adsorption Ratios for Acidic Soils

A Methodology to Estimate Net Proton: Phosphorus Co-Adsorption Ratios for Acidic Soils

Kajian Fisiko-Kimia Sedimen Perairan dan Pengaruhnya Terhadap Ketersediaan Cl-, CO32-/HCO3- dan SO42- di Badan Air DAS Sumber Brantas

Sulfate removal from aqueous solutions by hydrous iron oxide macroscopic, thermal and spectroscopic analyses

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