Post-treatment of Fly Ash by Ozone in a Fixed Bed Reactor

2009 ◽  
Vol 23 (1) ◽  
pp. 280-285 ◽  
Author(s):  
Kim Hougaard Pedersen ◽  
Mercè Casanovas Melià ◽  
Anker Degn Jensen ◽  
Kim Dam-Johansen
Keyword(s):  
Fly Ash ◽  
Fixed Bed ◽  
Post Treatment ◽  
Fixed Bed Reactor

Experiment Investigation Absorption of Mercury by Modified Fly Ash Dust Layer Attaching on Filter

2011 ◽  
Vol 393-395 ◽  
pp. 1212-1216 ◽  
Author(s):  
Huan Wang ◽  
Yong Fa Diao
Keyword(s):  
Fly Ash ◽  
Removal Efficiency ◽  
Fixed Bed ◽  
Experimental Studies ◽  
Elemental Mercury ◽  
Mercury Vapor ◽  
Filter Material ◽  
Fixed Bed Reactor ◽  
Dust Layer ◽  
Modified Fly Ash

As to figure out the effect that modified fly ash, which is prepared by fly ash –CaO, and modified fly ash dust layer attached on the surface of the filter material adsorbed elemental mercury, experimental studies are administrated in a laboratory-scale fixed bed reactor system with gaseous elemental mercury produced by a mercury vapor generator and simulated flue gas composition. The experimental results indicated that the adsorption performance of fly ash and CaO relatively poor. The proportion of CaO in the modified fly ash will affected the mercury removal efficiency of the absorbent which prepared by fly ash and CaO. It will be an optimal effect when the blend ratio of the flying ash and CaO is 2 to 1, and the maximum removal efficiency is up to 34%.As the adsorption temperature increases the removal efficiency of the modified fly ash deteriorates. The efficiency of dust layer attaching on the surface of the filter material is getting higher with the larger porosity of dust layer and smaller particle material size.

Utilization of fly ash-derived HZSM-5: catalytic pyrolysis of Jatropha wastes in a fixed-bed reactor

2016 ◽  
Vol 38 (13-14) ◽  
pp. 1660-1672 ◽  
Author(s):  
S. Vichaphund ◽  
V. Sricharoenchaikul ◽  
D. Atong
Keyword(s):  
Fly Ash ◽  
Catalytic Pyrolysis ◽  
Fixed Bed ◽  
Fixed Bed Reactor

Dimethyl Ether Synthesis via Methanol Dehydration over BEA Zeolite from Bagasse Fly Ash with Zircronium- and Nickel-Ion Exchange

2014 ◽  
Vol 931-932 ◽  
pp. 3-6 ◽  
Author(s):  
Watcharakorn Pranee ◽  
Pornsawan Assawasaengrat ◽  
Arthit Neramittagapong ◽  
Sasitorn Intarachit ◽  
Sutasinee Neramittagapong
Keyword(s):  
Fly Ash ◽  
Dimethyl Ether ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Beta Zeolite ◽  
Methanol Dehydration ◽  
Nickel Ion ◽  
Bagasse Fly Ash ◽  
Bea Zeolite ◽  
Dimethyl Ether Synthesis

The synthesis of dimethyl ether via methanol dehydration has been carried out over Beta zeolite (BEA) and ion-exchanged Beta zeolite from bagasse fly ash using hydrothermal method. The reactions were taken place in a fixed-bed reactor. The effects of nickel and zirconium ion-exchanged of BEA were investigated. Ni-BEA zeolite exhibited high methanol conversion rate and DME-resultant upon the reaction temperature from 200 to 225°C with equilibrium-limiting condition over 225°C; Furthermore, the Ni-BEA zeolite presented the best stable activity at 225°C over 1,200 minute. The Ni-BEA zeolite has also been interesting as a zeolite which suited to be one role importance to improve the properties for methanol dehydration to dimethyl ether.

Mercury sorption properties of HBr-modified fly ash in a fixed bed reactor

2015 ◽  
Vol 124 (1) ◽  
pp. 387-393 ◽  
Author(s):  
Wenhan Li ◽  
Na Song ◽  
Yongsheng Zhang ◽  
Yan Cao ◽  
William Orndorff ◽  
...  
Keyword(s):  
Fly Ash ◽  
Fixed Bed ◽  
Sorption Properties ◽  
Fixed Bed Reactor ◽  
Modified Fly Ash

ASSESSMENT OF A MICROALGAE POND FOR POST‐TREATMENT OF THE EFFLUENT FROM AN ANAEROBIC FIXED BED REACTOR TREATING DISTILLERY WASTEWATER

2008 ◽  
Vol 29 (9) ◽  
pp. 985-992 ◽  
Author(s):  
L. Travieso ◽  
F. Benítez ◽  
E. Sánchez ◽  
R. Borja ◽  
M. León ◽  
...  
Keyword(s):  
Fixed Bed ◽  
Post Treatment ◽  
Fixed Bed Reactor ◽  
Distillery Wastewater
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