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Jun 12, 2004· A further study on adsorption interaction of humic acid on natural magnetite, hematite and quartz in iron ore pelletizing process: Effect of the solution pH value. Powder Technology 2015, 271, 155-166.
The interaction between soil organic components and mineral components was explored in this study. Humic acid and kaolin were used for the preparation of organic-mineral complexes with different contents of organic matter, for experimental study of the adsorption of trichloroethylene.
Adsorption of humic acid from aqueous solutions on crosslinked chitosan–epichlorohydrin beads: Kinetics and isotherm studies. ... Ion Adsorption on Homogeneous and Heterogeneous Surfaces. By Luuk Koopal. The effects of humic substances on the transport of radionuclides: Recent improvements in the prediction of behaviour and the understanding ...
Jul 01, 2012· A further study on the interaction between one of organic active fraction of the binder and iron ore surface [J]. International Journal of Mineral Processing, 2011, 100(4): 172–178. Article Google Scholar [6] KANG S and XING Bao-shan. Humic acid fractionation upon sequential adsorption onto goethite [J].
A further study on adsorption interaction of humic acid on natural magnetite, hematite and quartz in iron ore pelletizing process_ Effect of the solution pH value Article Nov 2014
To further support the existence of this weak interaction, the adsorption of ametryn, a triazine herbicide, was investigated in kaolinite clay, humic acid, and soil under pseudo-Fenton conditions. At a low addition rate of ferric ion, the adsorption of ametryn in clay, humic acid, and soil was enhanced due to the decreased pH resulting from the ...
A major component of naturally occurring DOC is humic acid (HA), as it can represent up to 90% of DOC [2,13]. Humic acid has excellent binding properties and electrostatic interactions with heavy metals, leading to metal-organic complexes. These complexes can affect the adsorption …
A further study on adsorption interaction of humic acid on natural magnetite, hematite and quartz in iron ore pelletizing process: Effect of the solution pH value. Powder Technology 2015, 271, 155-166. DOI: 10.1016/j.powtec.2014.10.045.
Aug 12, 2020· The adsorption kinetics and model for isothermal adsorption of manganese on IHA were investigated. Solid phase characterization methods such as FTIR, SEM, and EDS were used to study the interaction between humic acid and metal manganese ions.
The Fe(OH)3 retained >95% of the added Sb in all experiments. The humic acid sorbed up to 60% of the added Sb at acidic pH values, but sorption decreased to zero at higher pH values. Further adsorption studies are recommended, such as examining the effects of …
Feb 01, 2015· Humic acid (HA) was the predominant component of the MHA (modified humic acid) binder invented by the authors. This work aims to study the effect of the solution pH value on the HA adsorption onto natural magnetite/hematite/quartz particles and …
Nov 23, 2015· Numerous studies have indicated that HAs not only reduce the toxic effects of ... and breakthrough curves to study how humic acids influence heavy metal–soil interactions. ... Fe-humic acid ...
Dec 12, 2012· Distinct effects of humic acid (HA, 0 – 10 mg L-1) on the transport of titanium dioxide (rutile) nanoparticles (nTiO2) through saturated sand columns were observed under conditions of environmental relevance (ionic strength 3 – 200 mM NaCl, pH 5.7 and 9.0). Specifically, the transport of nTiO2 was dramatically enhanced in the presence of HA at pH 5.7, even at a low HA concentration of …
The distinct effects of humic acid (HA, 0-10 mg L(-1)) on the transport of titanium dioxide (rutile) nanoparticles (nTiO(2)) through saturated sand columns were observed under conditions of environmental relevance (ionic strength 3-200 mM NaCl, pH …
ADSORPTION OF SOIL-DERIVED HUMIC ACID BY SEVEN CLAY MINERALS: A SYSTEMATIC STUDY REBECCA A. CHOTZEN,TAMARA POLUBESOVA*, BENNY CHEFETZ, AND YAEL G. MISHAEL* Department of Soil and Water Sciences, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem,
This study focused on the mechanistic effects of molecular interactions between inorganic particles (kaolinite) and the two main NOM fouling fractions of polysaccharides (alginate) and humics (humic acids) in ultrafiltration. Fouling effects were studied during the dead-end filtration of individual …
Feb 06, 2007· To further support the existence of this weak interaction, the adsorption of ametryn, a triazine herbicide, was investigated in kaolinite clay, humic acid, and soil under pseudo-Fenton conditions. At a low addition rate of ferric ion, the adsorption of ametryn in clay, humic acid, and soil was enhanced due to the decreased pH resulting from the ...
Apr 09, 2009· Therefore, the adsorption behavior of humic acids (HA) by four types of nano-oxides (i.e., TiO2, SiO2, Al2O3, and ZnO) was examined in this study to explore their interaction mechanisms using techniques including Fourier transform infrared (FTIR) spectroscopy and elemental, zeta potential, and surface area analyses.
Nov 12, 2020· However, studies on the effects of humic acid are still rare and insufficient 33. ... which occurred along with the Pb 2+ reduction by nZVI and further improved the adsorption of HA.
The present investigation entails the interaction of Cs(I) with humic acid (HA), employing batch adsorption and desorption technique. Chemical characterization of HA has been carried out using ...
Biosorption isothermsGenerally, studies on adsorption aimed at further understanding on mechanisms and adsorptive capacity of adsorbents at constant operating conditions, so the two most commonly used adsorption isotherms for biosorption studies, the Langmuir and Freundlich adsorption isotherms, were investigated here.
Oct 01, 2018· The adsorption process was facilitated by the continuous decrease in H + concentration, thus enhancing the activity of the base groups of AR; therefore, the adsorption effect of humic acid was strengthened. 39 However, when the pH increased above 8, the molecules in humic acid reacted with OH − to form ions, thus enhancing dissolution ...
Adsorption of humic acid from aqueous solution onto irradiation-crosslinked carboxymethylchitosan By Long Zhao Adsorption of humic acid from aqueous solutions on crosslinked chitosan–epichlorohydrin beads: Kinetics and isotherm studies
May 30, 2018· Humic acid is a trihalomethane component in water supplies, causing various health disorders in humans.This study was performed to examine humic acid adsorption on saturated activated carbon and to evaluate adsorbent regeneration through ultrasonic processes.In the present study, effects of various parameters, including initial concentration of humic acid, pH, contact time, …
Jul 28, 2021· Longstaffe, J. G., Courtier-Murias, D. & Simpson, A. J. A nuclear magnetic resonance study of the dynamics of organofluorine interactions with a dissolved humic acid…
Aug 03, 2018· Adsorption of a soil humic acid at the surface of goethite and its competitive interaction with phosphate. Geoderma 138, 12–19. doi: 10.1016/j.geoderma.2006.10.011 CrossRef Full Text | …
Detailed Adsorption Studies of Active Humic Acid Fraction of a New Binder on Iron Ore Particles ... A further study of the interaction between FA and iron ore surface was conducted via elemental ...
Oct 25, 2018· HA Adsorption on D201 and D201-nZVI. The electrostatic interaction between HA and D201 and complexation between HA and iron oxides on nZVI may occur in the coexistence system of HA, NO 3 −-N, and D201-nZVI, which may affect the nitrate reduction processes.Therefore, we first discuss HA adsorption on D201/D201-nZVI to further explore the mechanism of the HA effect on the nitrate …