Low Temperature Catalytic Oxidation of Hydrogen Sulfide and Methanethiol Using Wood and Coal Fly Ash

2003 ◽  
Vol 37 (11) ◽  
pp. 2568-2574 ◽  
Author(s):  
James R. Kastner ◽  
K. C. Das ◽  
Quentin Buquoi ◽  
Nathan D. Melear
Keyword(s):  
Hydrogen Sulfide ◽  
Fly Ash ◽  
Low Temperature ◽  
Catalytic Oxidation ◽  
Coal Fly Ash ◽  
Oxidation Of Hydrogen

The effect of water in the low-temperature catalytic oxidation of hydrogen sulfide to sulfur over activated carbon

1998 ◽  
Vol 173 (2) ◽  
pp. 185-192 ◽  
Author(s):  
Alessandra Primavera ◽  
Alessandro Trovarelli ◽  
Paolo Andreussi ◽  
Giuliano Dolcetti
Keyword(s):  
Hydrogen Sulfide ◽  
Activated Carbon ◽  
Low Temperature ◽  
Catalytic Oxidation ◽  
Effect Of Water ◽  
Oxidation Of Hydrogen

Low Temperature Catalytic Oxidation of Hydrogen Sulfide in Sour Produced Wastewater Using Activated Carbon Catalysts

1999 ◽  
Vol 33 (13) ◽  
pp. 2241-2246 ◽  
Author(s):  
Ajay K. Dalai ◽  
A. Majumdar ◽  
Eric L. Tollefson
Keyword(s):  
Hydrogen Sulfide ◽  
Activated Carbon ◽  
Low Temperature ◽  
Catalytic Oxidation ◽  
Oxidation Of Hydrogen ◽  
Carbon Catalysts

scholarly journals Optimum reaction ratio of coal fly ash to blast furnace cement for effective removal of hydrogen sulfide

Chemosphere ◽  
2017 ◽  
Vol 168 ◽  
pp. 384-389 ◽  
Author(s):  
Satoshi Asaoka ◽  
Hideo Okamura ◽  
Kyunghoi Kim ◽  
Yuzuru Hatanaka ◽  
Kenji Nakamoto ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Hydrogen Sulfide ◽  
Fly Ash ◽  
Coal Fly Ash ◽  
Reaction Ratio ◽  
Effective Removal ◽  
Optimum Reaction ◽  
Blast Furnace Cement

Novel aqueous chelating agents for catalytic oxidation of hydrogen sulfide to sulfur by air

2005 ◽  
Vol 4 (2) ◽  
pp. 157-175 ◽  
Author(s):  
Guoxiong Hua ◽  
Qingzhi Zhang ◽  
Derek McManus ◽  
Alex M. Z. Slawin ◽  
J. Derek Woollins
Keyword(s):  
Hydrogen Sulfide ◽  
Catalytic Oxidation ◽  
Chelating Agents ◽  
Oxidation Of Hydrogen

scholarly journals Low-temperature Synthesis of Belite Cement from Reactive Mixtures Based on Coal Fly Ash

2012 ◽  
Vol 6 (2) ◽  
Author(s):  
Nadezda Stevulova ◽  
Ivana Filkova ◽  
Kestutis Baltakys
Keyword(s):  
Fly Ash ◽  
Low Temperature ◽  
Coal Fly Ash ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis ◽  
Belite Cement

scholarly journals Alumina Extraction from Coal Fly Ash via Low-Temperature Potassium Bisulfate Calcination

Minerals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 585 ◽  
Author(s):  
Chunbin Guo ◽  
Jingjing Zou ◽  
Shuhua Ma ◽  
Jianlin Yang ◽  
Kehan Wang
Keyword(s):  
Fly Ash ◽  
Low Temperature ◽  
Extraction Efficiency ◽  
Coal Fly Ash ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Increasing Demand ◽  
Technology Effects ◽  
Best Fit

Owing to the depletion of bauxite and increasing demand for alumina, calcination methods for extracting alumina from coal fly ash (CFA) were developed. However, these methods have disadvantages such as the need for high temperatures and the emission of toxic gases. Hence, in this study, Al2O3 was extracted from CFA via low-temperature potassium bisulfate calcination technology. Effects of the potassium bisulfate amount, calcination temperature, and calcination time on the alumina extraction efficiency were investigated using X-ray diffraction, thermal gravimetry, scanning electron microscopy, differential scanning calorimetry, and energy-dispersive spectroscopy. It was found that this technique could recover alumina efficiently, and potassium bisulfate significantly contributed to the degradation of mullite and corundum phases. Al2O3 in CFA was converted into soluble K3Al(SO4)3. With a KHSO4/Al2O3 molar ratio of 7:1, calcining temperature of 230 °C, and calcining time of 3 h, the alumina extraction efficiency reached a maximum of 92.8%. The Avrami–Erofeev equation showed the best fit with the kinetic data for the low-temperature calcination of CFA with KHSO4. The activation energy was 28.36 kJ/mol.

Activated carbons for selective catalytic oxidation of hydrogen sulfide to sulfur

Carbon ◽  
2005 ◽  
Vol 43 (5) ◽  
pp. 1087-1090 ◽  
Author(s):  
Xianxian Wu ◽  
Andrew K. Kercher ◽  
Viviane Schwartz ◽  
Steven H. Overbury ◽  
Timothy R. Armstrong
Keyword(s):  
Hydrogen Sulfide ◽  
Catalytic Oxidation ◽  
Activated Carbons ◽  
Selective Catalytic Oxidation ◽  
Oxidation Of Hydrogen
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