Reactions of Simple Organic Acids and Chelating Agents with Dolomite

2013 ◽  
Author(s):  
Olusegun Olatunbosun Adenuga ◽  
Hisham A. Nasr-El-Din ◽  
Mohammed Ali Ibrahim Sayed
Keyword(s):  
Organic Acids ◽  
Chelating Agents

Reaction of Simple Organic Acids and Chelating Agents With Calcite

2008 ◽  
Author(s):  
L Li ◽  
Hisham Nasr-El-Din ◽  
Frank Chang ◽  
T. Lindvig
Keyword(s):  
Organic Acids ◽  
Chelating Agents

Reaction of Simple Organic Acids and Chelating Agents With Calcite

2008 ◽  
Author(s):  
L. Li ◽  
H.A. Nasr-El-Din ◽  
F.F. Chang ◽  
T. Lindvig
Keyword(s):  
Organic Acids ◽  
Chelating Agents

Impact of Organic Acids/Chelating Agents on Rheological Properties of Amidoamine Oxide Surfactant

2010 ◽  
Author(s):  
Lingling Li ◽  
Hisham A. Nasr-El-Din ◽  
James B. Crews ◽  
Kay E. Cawiezel
Keyword(s):  
Organic Acids ◽  
Rheological Properties ◽  
Chelating Agents

Reaction of Simple Organic Acids and Chelating Agents with Calcite

2008 ◽  
Author(s):  
L. Li ◽  
Hisham A. Nasr-El-Din ◽  
Frank Fakuen Chang ◽  
T. Lindvig
Keyword(s):  
Organic Acids ◽  
Chelating Agents

scholarly journals Mechanisms of arsenite oxidation and arsenate adsorption by a poorly crystalline manganese oxide in the presence of low molecular weight organic acids

2019 ◽  
Vol 98 ◽  
pp. 04009 ◽  
Author(s):  
Mengyu Liang ◽  
Huaming Guo ◽  
Wei Xiu
Keyword(s):  
Molecular Weight ◽  
Organic Acids ◽  
Manganese Oxide ◽  
Oxidation Rate ◽  
Active Sites ◽  
Manganese Oxides ◽  
Chelating Agents ◽  
Redox System ◽  
Low Molecular Weight ◽  
Arsenate Adsorption

Manganese oxides are considered as one of the effective oxides capable of oxidizing arsenite and reduce the toxicity of arsenic. Since low molecular weight organic acids (LMWOAs) commonly found in nature can act as reducing and chelating agents for manganese oxides, it is particularly important to investigate how these organic acids with different numbers of carboxyl groups like citrate and EDTA affect oxidation and adsorption of arsenic by manganese oxides. In this study, low As(V) adsorption on manganese oxide is slightly enhanced by citrate and EDTA, which results from the increase in active sites via reduction of manganese oxide by LMWOAs. However, citrate and EDTA have different effects on the oxidation of As(III). MnIII/II citrate autocatalytic cycle as a manganese-based redox system decreases As(III) oxidation rate, but EDTA does not yield autocatalysis, which slightly increases the oxidation rate of As(III). Reduction of manganese oxide by EDTA and chelation between Mn(II) and EDTA lead to exposure of more active sites. Our research highlights the different effects of low molecular weight organic acids on the reactions between arsenic and manganese oxide.

Corrosion Rates of Cr- and Ni-Based Alloys With Organic Acids and Chelating Agents Used in Stimulation of Deep Wells

2017 ◽  
Vol 32 (02) ◽  
pp. 208-217 ◽  
Author(s):  
Corine A. de Wolf ◽  
Hisham A. Nasr-El-Din ◽  
Arjen Bouwman ◽  
Edwin R. A. Bang ◽  
Ed Naylor
Keyword(s):  
Organic Acids ◽  
Chelating Agents ◽  
Corrosion Rates ◽  
Deep Wells ◽  
Stimulation Of

Impact of Organic Acids/Chelating Agents on the Rheological Properties of an Amidoamine-Oxide Surfactant

2011 ◽  
Vol 26 (01) ◽  
pp. 30-40 ◽  
Author(s):  
Hisham A. Nasr-El-Din ◽  
Lingling Li ◽  
James B. Crews ◽  
Kay E. Cawiezel
Keyword(s):  
Organic Acids ◽  
Rheological Properties ◽  
Chelating Agents
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