Investigation of Interparticle Forces in Natural Waters:  Effects of Adsorbed Humic Acids on Iron Oxide and Alumina Surface Properties

2004 ◽  
Vol 38 (18) ◽  
pp. 4791-4796 ◽  
Author(s):  
Sylvia Sander ◽  
Luke M. Mosley ◽  
Keith A. Hunter
Keyword(s):  
Iron Oxide ◽  
Surface Properties ◽  
Humic Acids ◽  
Natural Waters ◽  
Alumina Surface ◽  
Interparticle Forces

AGGREGATION AND SURFACE PROPERTIES OF IRON OXIDE NANOPARTICLES: INFLUENCE OF pH AND NATURAL ORGANIC MATTER

2008 ◽  
Vol 27 (9) ◽  
pp. 1875 ◽  
Author(s):  
Mohammed Baalousha ◽  
Adriana Manciulea ◽  
Susan Cumberland ◽  
Kevin Kendall ◽  
Jamie R. Lead
Keyword(s):  
Organic Matter ◽  
Iron Oxide ◽  
Surface Properties ◽  
Iron Oxide Nanoparticles ◽  
Natural Organic Matter ◽  
Oxide Nanoparticles ◽  
Influence Of Ph

The role of reactive surface sites and complexation by humic acids in the interaction of clay mineral and iron oxide particles

2004 ◽  
Vol 35 (3) ◽  
pp. 257-267 ◽  
Author(s):  
Etelka Tombácz ◽  
Zsuzsanna Libor ◽  
Erzsébet Illés ◽  
Andrea Majzik ◽  
Erwin Klumpp
Keyword(s):  
Iron Oxide ◽  
Clay Mineral ◽  
Humic Acids ◽  
Iron Oxide Particles ◽  
Surface Sites ◽  
Reactive Surface ◽  
Oxide Particles

Desorption of Humic Acids from an Iron Oxide Surface

1998 ◽  
Vol 32 (17) ◽  
pp. 2572-2577 ◽  
Author(s):  
Marcelo J. Avena ◽  
Luuk K. Koopal
Keyword(s):  
Iron Oxide ◽  
Humic Acids ◽  
Oxide Surface

Flow-injection photometric determination of the phenol index of natural waters in the presence of humic acids

2005 ◽  
Vol 60 (1) ◽  
pp. 70-74 ◽  
Author(s):  
A. L. Moskvin ◽  
A. V. Mozzhukhin ◽  
E. A. Mukhina ◽  
L. N. Moskvin
Keyword(s):  
Humic Acids ◽  
Flow Injection ◽  
Natural Waters ◽  
Photometric Determination ◽  
Phenol Index

scholarly journals Magnetic iron oxide and manganese-doped iron oxide nanoparticles for the collection of alpha-emitting radionuclides from aqueous solutions

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 105239-105251 ◽  
Author(s):  
Matthew J. O'Hara ◽  
Jennifer C. Carter ◽  
Cynthia L. Warner ◽  
Marvin G. Warner ◽  
R. Shane Addleman
Keyword(s):  
Iron Oxide ◽  
Aqueous Solutions ◽  
Iron Oxide Nanoparticles ◽  
Human Urine ◽  
Natural Waters ◽  
Magnetic Nanomaterials ◽  
Oxide Nanoparticles ◽  
Magnetic Iron Oxide ◽  
Ph Range ◽  
Mn Doped

The sorption performance of two amphoteric magnetic nanomaterials, Fe3O4and Mn-doped Fe3O4, has been evaluated for Po, Ra, U, and Am in natural waters (river, ground, and sea) as well as human urine across a pH range.

scholarly journals Effect of partial oxidation by ozonation on the photocatalytic degradation of humic acids

2003 ◽  
Vol 5 (2) ◽  
pp. 75-80 ◽  
Author(s):  
Aslihan Kerc ◽  
Miray Bekbolet ◽  
Ahmet Mete Saatci
Keyword(s):  
Humic Acid ◽  
Photocatalytic Degradation ◽  
Humic Acids ◽  
Partial Oxidation ◽  
Photocatalytic Oxidation ◽  
Natural Waters ◽  
Adsorption Model ◽  
Pseudo First Order Reaction ◽  
Adsorption Characteristics ◽  
Degradation Rates

In this study humic acids, which are known to be a heterogeneous group of organic macromolecules found in natural waters, were oxidized using ozonation and photocatalysis in a sequential system. Ozonation was employed for achieving partial oxidation of humic acids prior to photocatalytic oxidation. Degradation of humic acid was explained by using pseudo first order reaction rate model based on UV-vis measurements. An improvement was achieved in the photocatalytic degradation rates with respect to the degree of pre-oxidation by ozonation. Due to the surface oriented nature of photocatalysis, adsorption characteristics of partially oxidized humic acid samples onTiO2photocatalyst were evaluated by the application of the Freundlich adsorption model. The photocatalytic degradation rates did not correlate well with the dark adsorption characteristics of the pre-ozonated as well as untreated humic acid samples.

Effect of humic acids on iron analyses in natural waters

1971 ◽  
Vol 5 (9) ◽  
pp. 689-692 ◽  
Author(s):  
Marion T. Doig ◽  
Dean F. Martin
Keyword(s):  
Humic Acids ◽  
Natural Waters
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