scholarly journals Synthesis of Fe3O4/MnO2/Humic acid nanocomposite for strontium ion adsorption and its interferences

2021 ◽  
Author(s):  
Ferdy Nanlohy ◽  
Anugrah Ricky Wijaya ◽  
Bambang Semedi
Keyword(s):  
Humic Acid ◽  
Ion Adsorption ◽  
Strontium Ion

Kinetics of strontium ion adsorption on natural clay samples

2005 ◽  
Vol 266 (2) ◽  
pp. 289-293 ◽  
Author(s):  
Z. Nemes ◽  
N. M. Nagy ◽  
J. Kónya
Keyword(s):  
Ion Adsorption ◽  
Natural Clay ◽  
Kinetics Of ◽  
Strontium Ion

Effect of the synthesis temperature of sodium nonatitanate on batch kinetics of strontium-ion adsorption from aqueous solution

Adsorption ◽  
2011 ◽  
Vol 17 (6) ◽  
pp. 967-975 ◽  
Author(s):  
Aurélie Merceille ◽  
Evelyne Weinzaepfel ◽  
Yves Barré ◽  
Agnès Grandjean
Keyword(s):  
Aqueous Solution ◽  
Synthesis Temperature ◽  
Ion Adsorption ◽  
Batch Kinetics ◽  
Sodium Nonatitanate ◽  
Kinetics Of ◽  
Strontium Ion

Metal Ion Adsorption to Complexes of Humic Acid and Metal Oxides:  Deviations from the Additivity Rule

1999 ◽  
Vol 33 (21) ◽  
pp. 3892-3897 ◽  
Author(s):  
Arnoldus W. P. Vermeer ◽  
Jenny K. McCulloch ◽  
Willem H. van Riemsdijk ◽  
Luuk K. Koopal
Keyword(s):  
Humic Acid ◽  
Metal Oxides ◽  
Metal Ion ◽  
Ion Adsorption ◽  
Additivity Rule ◽  
Metal Ion Adsorption

scholarly journals THE INFLUENCE OF pH TOWARDS MULTIPLE METAL ION ADSORPTION OF Cu(II), Zn(II), Mn(II), AND Fe(II) ON HUMIC ACID

2010 ◽  
Vol 6 (1) ◽  
pp. 43-46 ◽  
Author(s):  
Buhani Buhani ◽  
Suharso Suharso
Keyword(s):  
Humic Acid ◽  
Metal Ions ◽  
Metal Ion ◽  
Ion Adsorption ◽  
Batch Method ◽  
Metal Ion Adsorption ◽  
Before And After ◽  
General Capacity ◽  
Adsorption Energies ◽  
Influence Of Ph

Multiple metal ions adsorption of Cu(II), Zn(II), Mn(II) and Fe(II) on humic acid with a batch method has been carried out at pH interaction of 3, 5, and 6. Concentration of metal ions in solution before and after interaction was analyzed with Atomic Absorption Spectrophotometer (AAS). Result showed that adsorption multiple metal ions of Cu(II), Zn(II), Mn(II), and Fe(II) on humic acid is optimum at pH 5. Adsorption energies of the multiple metal ions Cu(II), Zn(II), Mn(II), and Fe(II) on humic acid at pH 3, 5, and 6 are around 35.0 - 37.6 kJ/mole. In general, capacity of competition adsorption of the multiple metal ions has an order as follows; Cu(II) < Fe(II) < Zn(II) < Mn(II).   Keywords: Humic acid, adsorption, multiple metal

Characterization of dissolved organic matter (DOM) extracted from soils by hot water percolation (HWP)

2010 ◽  
Vol 59 (1) ◽  
pp. 99-108 ◽  
Author(s):  
M. Takács ◽  
Gy. Füleky
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Natural Organic Matter ◽  
Extraction Methods ◽  
Soil Samples ◽  
Hot Water ◽  
Soil Extracts ◽  
Water Percolation ◽  
Soil Humic Acid

The Hot Water Percolation (HWP) technique for preparing soil extracts has several advantages: it is easily carried out, fast, and several parameters can be measured from the same solution. The object of this study was to examine the possible use of HWP extracts for the characterization of soil organic matter. The HPLC-SEC chromatograms, UV-VIS and fluorescence properties of the HWP extracts were studied and the results were compared with those of the International Humic Substances Society (IHSS) Soil Humic Acid (HA), IHSS Soil Fulvic Acid (FA) and IHSS Suwannee Natural Organic Matter (NOM) standards as well as their HA counterparts isolated by traditional extraction methods from the original soil samples. The DOM of the HWP solution is probably a mixture of organic materials, which have some characteristics similar to the Soil FA fractions and NOM. The HWP extracted organic material can be studied and characterized using simple techniques, like UV-VIS and fluorescence spectroscopy.

Changes in the Humic Acid–Metal Complexation Characteristics Depending on Humification Degree / Humīnskābju – Metālu Kompleksveidošanās Rakstura Izmaiņas Atkarībā No Humifikācijas Pakāpes

2012 ◽  
Vol 51 (3) ◽  
pp. 228-237
Author(s):  
D. Dudare ◽  
M. Klavins
Keyword(s):  
Humic Acid ◽  
Stability Constants ◽  
Humic Acids ◽  
Complex Stability ◽  
Peat Layer ◽  
Raised Bog ◽  
Complexing Capacity ◽  
Humification Degree ◽  
Complexation Process ◽  
Complex Stability Constants

The aim of this study is to determine the Cu(II) complexing capacity and stability constants of Cu(II) complexes of humic acids isolated from two well-characterized raised bog peat profiles in respect to the basic properties and humification characteristics of the studied peats and their humic acids. The complex stability constants significantly change within the studied bog profiles and are well correlated with the age and decomposition degree of the peat layer from which the humic acids have been isolated. Among factors that influence this complexation process, molecular mass and ability to form micellar structures (supramolecules) of humic substances are of key importance.

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