Electrochemical Incineration of Oxalic Acid at Manganese Dioxide Rotating Cylinder Anode: Role of Operative Parameters in the Presence of NaCl

2016 ◽  
Vol 163 (13) ◽  
pp. E333-E340 ◽  
Author(s):  
Ali H. Abbar ◽  
Rasha H. Salman ◽  
Ammar S. Abbas
Keyword(s):  
Oxalic Acid ◽  
Manganese Dioxide ◽  
Rotating Cylinder ◽  
Electrochemical Incineration

Electrochemical incineration of oxalic acid at boron doped diamond anodes: Role of operative parameters

2008 ◽  
Vol 53 (5) ◽  
pp. 2095-2108 ◽  
Author(s):  
Onofrio Scialdone ◽  
Alessandro Galia ◽  
Chiara Guarisco ◽  
Serena Randazzo ◽  
Giuseppe Filardo
Keyword(s):  
Oxalic Acid ◽  
Boron Doped Diamond ◽  
Boron Doped ◽  
Electrochemical Incineration

The Role of Manganese Dioxide in the Natural Formation of Organochlorines

2021 ◽  
Author(s):  
Warren M. Kadoya ◽  
Camila L. Madeira ◽  
Christiane Hoppe-Jones ◽  
Tom Solsten ◽  
Shane A. Snyder ◽  
...  
Keyword(s):  
Manganese Dioxide ◽  
Natural Formation

The Role of Oxalic Acid in the Ozone Bleaching Kinetics of an Xo-Kraft Pulp

2000 ◽  
Vol 20 (2) ◽  
pp. 147-167 ◽  
Author(s):  
M. Blanca Roncero ◽  
José F. Colom ◽  
Teresa Vidal ◽  
M. [Agrave]ngels Queral
Keyword(s):  
Oxalic Acid ◽  
Kraft Pulp ◽  
Kinetics Of ◽  
Ozone Bleaching

scholarly journals The Relationship between Serum Oxalic Acid, Central Hemodynamic Parameters and Colonization by Oxalobacter formigenes in Hemodialysis Patients

2015 ◽  
Vol 5 (3) ◽  
pp. 164-174 ◽  
Author(s):  
Baris Gulhan ◽  
Kultigin Turkmen ◽  
Merve Aydin ◽  
Murat Gunay ◽  
Aytekin Cıkman ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Linear Regression Analysis ◽  
Multivariate Linear Regression Analysis ◽  
Hemodynamic Parameters ◽  
Oxalobacter Formigenes ◽  
Cardiovascular Morbidity And Mortality ◽  
Central Hemodynamic ◽  
Blood Pressures ◽  
The Relationship

Background/Objective: Elevated pulse wave velocity (PWV) and central aortic blood pressures are independent predictors of increased cardiovascular morbidity and mortality in hemodialysis (HD) patients. Oxalic acid is a uremic retention molecule that is extensively studied in the pathogenesis of calcium oxalate stones. Oxalobacter formigenes, a member of the colon microbiota, has important roles in oxalate homeostasis. Data regarding the colonization by and the exact role of O. formigenes in the pathogenesis of oxalic acid metabolism in HD patients are scant. Hence, we aimed to determine the relationship between fecal O. formigenes colonization, serum oxalic acid and hemodynamic parameters in HD patients with regard to the colo-reno-cardiac axis. Methods: Fifty HD patients were enrolled in this study. PWV and central aortic systolic (cASBP) and diastolic blood pressures (cADBP) were measured with a Mobil-O-Graph (I.E.M. GmbH, Stolberg, Germany). Serum oxalic acid levels were assessed by ELISA, and fecal O. formigenes DNA levels were isolated and measured by real-time PCR. Results: Isolation of fecal O. formigenes was found in only 2 HD patients. One of them had 113,609 copies/ml, the other one had 1,056 copies/ml. Serum oxalic acid levels were found to be positively correlated with PWV (r = 0.29, p = 0.03), cASBP (r = 0.33, p = 0.001) and cADBP (r = 0.42, p = 0.002) and negatively correlated with LDL (r = -0.30, p = 0.03). In multivariate linear regression analysis, PWV was independently predicted by oxalic acid, glucose and triglyceride. Conclusions: This is the first study that demonstrates the absence of O. formigenes as well as a relation between serum oxalic acid and cASBP, cADBP and PWV in HD patients. Replacement of O. formigenes with pre- and probiotics might decrease serum oxalic acid levels and improve cardiovascular outcomes in HD patients.

scholarly journals The Role of Oxalic Acid in New Particle Formation from Methanesulfonic Acid, Methylamine, and Water

2017 ◽  
Vol 51 (4) ◽  
pp. 2124-2130 ◽  
Author(s):  
Kristine D. Arquero ◽  
R. Benny Gerber ◽  
Barbara J. Finlayson-Pitts
Keyword(s):  
Oxalic Acid ◽  
Methanesulfonic Acid ◽  
Particle Formation ◽  
New Particle Formation

Manganese dioxide in a new role of Sulfur extrusion in thioamides

Tetrahedron ◽  
1992 ◽  
Vol 48 (10) ◽  
pp. 1953-1958 ◽  
Author(s):  
B. Radha Rani ◽  
M.F. Rahman ◽  
U.T. Bhalerao
Keyword(s):  
Manganese Dioxide

Potential application of manganese coated sand in the removal of Mn(II) from aqueous solutions

2007 ◽  
Vol 56 (7) ◽  
pp. 153-160 ◽  
Author(s):  
D. Tiwari ◽  
M.R. Yu ◽  
M.N. Kim ◽  
S.M. Lee ◽  
O.H. Kwon ◽  
...  
Keyword(s):  
Water Treatment ◽  
Aqueous Solutions ◽  
Manganese Dioxide ◽  
Sodium Hypochlorite ◽  
Surface Waters ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Column Studies ◽  
Coated Sand

The aim of this study was to explore the applicability of manganese coated sand (MCS) in the presence and absence of sodium hypochlorite for the removal of Mn(II) (2 mg/L) from aqueous solutions. Sand itself is widely used as a filter media for the treatment of wastewaters and it was reported that during the treatment, Mn(II), which is present in the wastewater, is to be deposited on the surface of sand in the form of manganese dioxide. The present investigation dealt with various MCS samples, prepared in the laboratory by various doses of Mn(II) (i.e. from 0.05 to 0.2 mol/L) and the samples were obtained from the pilot plant and naturally coated in the water treatment plant for the removal of Mn(II) in the batch and column studies. Moreover, it was realised that the role of hypochlorite is multifunctional as it not only enhances the uptake of Mn(II) on the surface of MCS through oxidation of Mn(II) into Mn(IV) and hence the formation of manganese dioxide, but it was also supposed to disinfect the bacteria or harmful pathogens from the waste/surface waters. The results obtained clearly inferred that various MCS samples used for the removal of Mn(II) from aqueous solutions showed comparable removal efficiency. However, the presence of sodium hypochlorite greatly enhanced the removal of Mn(II) as more than 80% Mn(II) was removed in the presence of sodium hypochlorite at around pH 6.5. Similarly, while comparing the column data it was again noted that the breakthrough points occurred after the 4,100 and 6,500 bed volumes, respectively, in the absence and in the presence of sodium hypochlorite (2 mg/L).

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