further study on adsorption interaction of humic acid on


ADSORPTION OF SOILDERIVED HUMIC ACID BY SEVEN CLAY ...

ADSORPTION OF SOILDERIVED 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,

Effect of Temperature on Adsorption of Humic Acid from ...

enabling large humic acid to penetrate further 3][15]. The [1 increasing adsorption of humic acid with increasing temperature, it was due to more interaction between adsorbate and adsorbent [16]. The thermodynamic parameters such as Gibbs free energy, enthalpy and entropy changes for humic acid sorption on

Effect of Humic Acid and Molybdate on Phosphate Adsorption ...

As ststistically, there was not interaction of humic acid and molybdate on P adsorption. Application of humic acid with rate of 100 mg.L1 was not effective decrease P adsorption in Typic Hapludults. It was due to the pH of the adsorption system that get near to its pKa of carboxyl gruop about 5.

ADSORPTION OF BORIC ACID ON PURE AND HUMIC ACID COATED ...

The effects of humic acid (HA) and dissolved CO2 on boric acid adsorption on amorphous (am)Al(OH) 3 were investigated as their influence on sorption is potentially important.

Effect of Humic Acid and Molybdate on Phosphate Adsorption ...

Humic acids containing carboxyl and hydroxyl groups that have the ability to cover the P adsorption site in Typic Hapludults. Molybdate has similarity behaviour with phosphate in theacid soils. Research aim was to study the effects of molybdate and humic acid to the kinetics of phosphate adsorption in Typic Hapludults of Cigudeg, Bogor.

Adsorption of Humic Acid from Aqueous Solution ... IPCBEE

Adsorption of Humic Acid from Aqueous Solution onto PMMA Nanofiber: Kinetics Study . Muhammad. Ali Zulfikar. 1 +, Afdal. Bahri. 1. ... used without further purification. Before mixing the . HA. sample with adsorbent, its pH value. was adjusted . and. measured usin. g 300 Hanna Instrument pH meter.

ADSORPTION OF BORIC ACID ON PURE AND HUMIC ACID COATED ...

al., 2002). The effects of humic acid (HA) and dissolved CO2 on boric acid adsorption on amorphous (am)Al(OH)3 were investigated as their influence on sorption is potentially important. Although a model system was used in the studies, the findings should be generally useful to better understand the mobility and bioavailability of boric

Adsorption of Humic Acid onto Carbonaceous Surfaces ...

The adsorption of humic acid (HA) onto highly ordered pyrolytic graphite (HOPG) surfaces at different concentrations has been studied by atomic force microscopy. When HA concentration was increased from 10 to 1,000 mg/L, HA can sequentially form spherical particles, layered structures, and connected blocks on HOPG surfaces.

Magnetic Nanoparticles Interaction with Humic Acid: In the ...

adsorption were investigated. Fourier transform infrared (FTIR) spectroscopy, Xray photoelectron spectroscopy (XPS) and zetapotential were used to explore the mechanisms of interaction. MATERIALS AND METHODS 2.1. Chemicals and Materials. Sodium hydroxide and hydrochloric acid used in this study were purchased from Beijing Chemicals Corporation.

Modification of Activated Carbon for the Adsorption of ...

Nitrogen adsorption analyses were performed to determine the specific surface areas of the materials used. The samples were pretreated at 300 °C for 12 hours. 2.3. Humic Acid Adsorption Tests The HA adsorption was tested by evaluating the adsorption capacity of the carbon and by conducting a kinetics study. 2.3.1. Evaluating the Adsorptive ...

Adsorption of lignite humic acid onto magnetite particle ...

A further study of the interaction between FA and iron ore surface was conducted via elemental analysis, chemical group analysis, batch adsorption experiments, Xray photoelectron spectroscopy ...

A further study on adsorption interaction of humic acid on ...

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 ...

A further study on adsorption interaction of humic acid on ...

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 the strength of green pellets with the MHA binder.

Effect of Humic Acid Source on Humic Acid Adsorption Onto ...

Humic acid has been found to inhibit the aggregation of NPs associated with its adsorption onto NPs (Kilduff et al. Humic acids are formed from the microbial decomposition of animal and plant residues and are widely distributed on the planet in soils. freshwater sediments.

Equilibrium and kinetic studies on the adsorption of humic ...

used for analyzing the humic acid concentration. All experiments were conducted in duplicate. In order to study the effects of initial pH on adsorption capacity, the initial pH levels of humic acid solution were adjusted in 2 to 11 range with 0.5 M HCl or NaOH. The flasks were taken out at optimal equilibrium contact time.

Adsorption of a soil humic acid at the surface of goethite ...

Soil humic acid adsorption isotherms some factors that may affect this process, i.e. pH and ionic strength, and also to analyze the competition between phosphate To obtain the adsorption isotherms of SHA on goethite, and SHA for goethite.

Comparative study on the adsorption interactions of humic ...

A novel type of organic binder, modified humic acid (MHA), has been developed and patented in China. Humic acid (HA) is one of the main active fractions in the MHA binder. In this study, adsorption of HA onto natural magnetite, hematite and quartz surfaces as a function of initial HA concentration was comparatively investigated.

Experimental study of humic acid adsorption onto bacteria ...

Because adsorption of humic acid onto the bacterial surface is strongest under lowpH conditions when both the humic acid (with three protonactive functional group types: L1, L2, and L3) and the bacterial surface are uncharged, the interaction is dominantly hydrophobic.

Competitive interaction between soilderived humic acid ...

Competitive interaction between soilderived humic acid and phosphate ... 4 adsorption as much as 27.8%. Both generated electro ... Further elucidation of the interaction between HA and PO 4 on Fe oxyhydroxides is needed. The aim of the present study was to help clarify the effects of

Adsorptive behaviors of humic acid onto freshly prepared ...

3.1 Adsorptive behaviors of humic acid with different molecular mass As is known, unsaturated functional groups such as –C=C and –Ar within humic acid molecules show significant absorption in ultravisual ranges. Consequently, the parameter of UV 254 was employed in this study to represent the quantity of humic acid.

Adsorption of Humic Acid onto Jordanian Kaolinite Clay ...

the capacities of HA and fulvic acid (FA) to adsorb Cu(II). The adsorption capacity of fulvic acid on kaolin is smaller than that of HA. The adsorption behavior of fulvic acid on kaolin can be described by a Langmuirtype isotherm. However, the adsorption isotherm of HA on kaolin exhibits nonLangmuir behavior.

Adsorption of Humic Acid onto Jordanian Kaolinite Clay ...

Santos A, Botero W, Bellin I, et al. Interaction between humic substances and metallic ions: a selectivity study of humic substances and their possible therapeutic application. Journal of the Brazilian Chemical Society. 2007;18: 824–830.

Kinetic Study for Adsorption Humic Acid on Soil Minerals ...

Kinetics of humic acid (HA) adsorption onto soil minerals (kaolinite and hematite) has been investigated under various conditions. The influence of ionic strength, pH, and solution cations on the rate of adsorption has been studied.

Tetracycline adsorption on kaolinite: pH, metal cations ...

equilibration time in this study to ensure adequate time was given to reach equilibrium. Batch adsorption experiments Background electrolyte cations, including Li?,Na?,K?, Ca2? and Mg2?, heavy metal Cu2? and humic acid (HA) effects on tetracycline adsorption onto kaolinite as a function of pH were assessed using batch adsorption experiments.

Adsorption of Humic Acid onto Carbonaceous Surfaces ...

The adsorption of humic acid (HA) onto highly ordered pyrolytic graphite (HOPG) surfaces at different concentrations has been studied by atomic force microscopy. When HA concentration was increased from 10 to 1,000 mg/L, HA can sequentially form spherical particles, layered structures, and connected blocks on HOPG surfaces.