Interaction of boron with humic acid and natural organic matter: Experiments and modeling

Esmaiel Goli, Tjisse Hiemstra*, Rasoul Rahnemaie

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Boron (B) is highly mobile in the environment. This characteristic easily leads to plant deficiency upon leaching from soil or to toxicity upon accumulation. Boric acid may interact with mineral surfaces as well as natural organic matter. In this study, the boric acid interaction with humic acid (HA) was measured in 0.01 M NaCl and CaCl 2 background solutions as a function of pH and the initial B concentration. In the Na-HA suspensions, the free boric acid concentration was determined using a novel approach, applying the Donnan Membrane Technique (DMT) in the dynamic mode. In the method, the experimental rate of diffusion is used as a measure for the free boric acid concentration. B adsorption in Na-HA and Ca-HA systems can be described with the NICA-Donnan model using a single set of boron binding parameters. In Na-HA systems, the adsorption of boric acid strongly increases with the background electrolyte concentration, due to a better screening of the HA charge. In this respect, the adsorption behavior of boric acid is opposite to that of heavy metal ions. Modeling shows that the boric acid adsorption is determined by the competition of H + , Ca 2+ , and B(OH) 3 at binding to the sites of HA. The parameterized NICA-Donnan model is well able to predict the pH-dependent adsorption of boric acid in soil organic horizons. The model is a promising tool for future predictions of the fate of boric acid in a variety of natural multicomponent environments, including soil and seawater.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalChemical Geology
Volume515
DOIs
Publication statusPublished - 20 Jun 2019

Fingerprint

Humic Substances
Boron
boron
Biological materials
humic acid
organic matter
acid
modeling
experiment
Experiments
adsorption
Adsorption
Soils
boric acid
Heavy Metals
Heavy ions
Seawater
organic soil
electrolyte
Electrolytes

Keywords

  • Adsorption
  • Boron
  • Donnan membrane
  • Humic acid
  • NICA

Cite this

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title = "Interaction of boron with humic acid and natural organic matter: Experiments and modeling",
abstract = "Boron (B) is highly mobile in the environment. This characteristic easily leads to plant deficiency upon leaching from soil or to toxicity upon accumulation. Boric acid may interact with mineral surfaces as well as natural organic matter. In this study, the boric acid interaction with humic acid (HA) was measured in 0.01 M NaCl and CaCl 2 background solutions as a function of pH and the initial B concentration. In the Na-HA suspensions, the free boric acid concentration was determined using a novel approach, applying the Donnan Membrane Technique (DMT) in the dynamic mode. In the method, the experimental rate of diffusion is used as a measure for the free boric acid concentration. B adsorption in Na-HA and Ca-HA systems can be described with the NICA-Donnan model using a single set of boron binding parameters. In Na-HA systems, the adsorption of boric acid strongly increases with the background electrolyte concentration, due to a better screening of the HA charge. In this respect, the adsorption behavior of boric acid is opposite to that of heavy metal ions. Modeling shows that the boric acid adsorption is determined by the competition of H + , Ca 2+ , and B(OH) 3 at binding to the sites of HA. The parameterized NICA-Donnan model is well able to predict the pH-dependent adsorption of boric acid in soil organic horizons. The model is a promising tool for future predictions of the fate of boric acid in a variety of natural multicomponent environments, including soil and seawater.",
keywords = "Adsorption, Boron, Donnan membrane, Humic acid, NICA",
author = "Esmaiel Goli and Tjisse Hiemstra and Rasoul Rahnemaie",
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Interaction of boron with humic acid and natural organic matter: Experiments and modeling. / Goli, Esmaiel; Hiemstra, Tjisse; Rahnemaie, Rasoul.

In: Chemical Geology, Vol. 515, 20.06.2019, p. 1-8.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Interaction of boron with humic acid and natural organic matter: Experiments and modeling

AU - Goli, Esmaiel

AU - Hiemstra, Tjisse

AU - Rahnemaie, Rasoul

PY - 2019/6/20

Y1 - 2019/6/20

N2 - Boron (B) is highly mobile in the environment. This characteristic easily leads to plant deficiency upon leaching from soil or to toxicity upon accumulation. Boric acid may interact with mineral surfaces as well as natural organic matter. In this study, the boric acid interaction with humic acid (HA) was measured in 0.01 M NaCl and CaCl 2 background solutions as a function of pH and the initial B concentration. In the Na-HA suspensions, the free boric acid concentration was determined using a novel approach, applying the Donnan Membrane Technique (DMT) in the dynamic mode. In the method, the experimental rate of diffusion is used as a measure for the free boric acid concentration. B adsorption in Na-HA and Ca-HA systems can be described with the NICA-Donnan model using a single set of boron binding parameters. In Na-HA systems, the adsorption of boric acid strongly increases with the background electrolyte concentration, due to a better screening of the HA charge. In this respect, the adsorption behavior of boric acid is opposite to that of heavy metal ions. Modeling shows that the boric acid adsorption is determined by the competition of H + , Ca 2+ , and B(OH) 3 at binding to the sites of HA. The parameterized NICA-Donnan model is well able to predict the pH-dependent adsorption of boric acid in soil organic horizons. The model is a promising tool for future predictions of the fate of boric acid in a variety of natural multicomponent environments, including soil and seawater.

AB - Boron (B) is highly mobile in the environment. This characteristic easily leads to plant deficiency upon leaching from soil or to toxicity upon accumulation. Boric acid may interact with mineral surfaces as well as natural organic matter. In this study, the boric acid interaction with humic acid (HA) was measured in 0.01 M NaCl and CaCl 2 background solutions as a function of pH and the initial B concentration. In the Na-HA suspensions, the free boric acid concentration was determined using a novel approach, applying the Donnan Membrane Technique (DMT) in the dynamic mode. In the method, the experimental rate of diffusion is used as a measure for the free boric acid concentration. B adsorption in Na-HA and Ca-HA systems can be described with the NICA-Donnan model using a single set of boron binding parameters. In Na-HA systems, the adsorption of boric acid strongly increases with the background electrolyte concentration, due to a better screening of the HA charge. In this respect, the adsorption behavior of boric acid is opposite to that of heavy metal ions. Modeling shows that the boric acid adsorption is determined by the competition of H + , Ca 2+ , and B(OH) 3 at binding to the sites of HA. The parameterized NICA-Donnan model is well able to predict the pH-dependent adsorption of boric acid in soil organic horizons. The model is a promising tool for future predictions of the fate of boric acid in a variety of natural multicomponent environments, including soil and seawater.

KW - Adsorption

KW - Boron

KW - Donnan membrane

KW - Humic acid

KW - NICA

U2 - 10.1016/j.chemgeo.2019.03.021

DO - 10.1016/j.chemgeo.2019.03.021

M3 - Article

VL - 515

SP - 1

EP - 8

JO - Chemical Geology

JF - Chemical Geology

SN - 0009-2541

ER -