Kinetic Study of Humic Acid Ozonation in Aqueous Media

2008 ◽  
Vol 36 (10-11) ◽  
pp. 893-899 ◽  
Author(s):  
Hengfeng Miao ◽  
Wenyi Tao ◽  
Fengjie Cui ◽  
Zhenghong Xu ◽  
Zonghua Ao
Keyword(s):  
Humic Acid ◽  
Kinetic Study ◽  
Aqueous Media

A novel ANN approach for modeling of alternating pulse current electrocoagulation-flotation (APC-ECF) process: Humic acid removal from aqueous media

2018 ◽  
Vol 117 ◽  
pp. 111-124 ◽  
Author(s):  
Gona Hasani ◽  
Hiua Daraei ◽  
Behzad Shahmoradi ◽  
Fardin Gharibi ◽  
Afshin Maleki ◽  
...  
Keyword(s):  
Humic Acid ◽  
Pulse Current ◽  
Aqueous Media

Application of radiotracer techniques to a kinetic study of the interaction of Eu with humic acid

2001 ◽  
Vol 89 (11-12) ◽  
Author(s):  
J. Mizera ◽  
P. Benes ◽  
I. Hvozdová ◽  
A. Jansová
Keyword(s):  
Humic Acid ◽  
Metal Ions ◽  
Kinetic Study ◽  
Humic Substances ◽  
Isotope Exchange ◽  
Experimental Methods ◽  
Radiotracer Technique ◽  
Radiotracer Techniques

Experimental methods based on the radiotracer technique have been designed to study kinetic aspects of the interaction of humic substances (HS) with metal ions. The rate of dissociation of Eu-HS complexes was observed via the rate of the isotope exchange in the system

Humic acid sorption onto a quartz sand surface: A kinetic study and insight into fractionation

2008 ◽  
Vol 325 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Aurélien Pitois ◽  
Liam G. Abrahamsen ◽  
Peter I. Ivanov ◽  
Nick D. Bryan
Keyword(s):  
Humic Acid ◽  
Kinetic Study ◽  
Quartz Sand ◽  
Sand Surface ◽  
Insight Into

Mechanism of bromination of a quaternary pyrimidinium cation. Change of rate determining step with acidity

1978 ◽  
Vol 56 (23) ◽  
pp. 2970-2976 ◽  
Author(s):  
Oswald S. Tee ◽  
David C. Thackray ◽  
Charles G. Berks
Keyword(s):  
Kinetic Study ◽  
Rate Constants ◽  
Aqueous Media ◽  
Stopped Flow ◽  
Flow Method ◽  
High Acidity ◽  
Rate Determining Step ◽  
Kinetics Of ◽  
Good Agreement

The kinetics of bromination of the 1,2-dihydro-1,3-dimethyl-2-oxopyrimidinium cation (Q+) in aqueous media (pH 0–5) have been studied using the stopped-flow method. At the higher acidities (pH < 2) the results are consistent with rate determining attack by bromine upon the pseudobase (QOH), whereas at low acidities (pH > 4) it appears that pseudobase formation is rate determining. The change occurs because at high acidity the reversal of the pseudobase QOH to the cation is fast relative to bromine attack, whereas at low acidity the converse is true. Results obtained at intermediate acidities (pH 2–4) are consistent with this interpretation.A separate kinetic study of pseudobase formation (and decomposition) yielded rate constants in good agreement with those derived from the bromination study.

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