Characteristic of SO2 adsorption on activated carbon for simulated flue gas and its thermal regeneration.

The aim is to modify the activated carbon from sewage sludge with γ-Al2O3 by sol-gel, investigate its performances on the SO2 adsorption and the desulfurization mechanisms in the presence of gaseous oxygen. The modification of the activated carbon from sewage sludge was carried out by adding γ-Al2O3 to improve the SO2 adsorption in a simulated flue gas. The results indicated that γ-Al2O3 porous membranes addition was very effective in promoting the BET area and pore volumes of the activated carbon from sewage sludge. γ-Al2O3 porous membranes in the presence of gaseous oxygen had much effect on the adsorption performance and benefited the SO2 adsorption capacity. The physically adsorbed adsorption took place first. And the following reactions should be occurring on the active sites (*) because of the specific pore construction, BET area and surface functional groups on γ-Al2O3/activated carbon from sewage sludge: (1)SO2 + *→SO2* , (2) O2 + *→O2* , (3)SO2* + O2* → SO3* , (4) 3SO3* + Al2O3 → Al2(SO4)3.

Download Full-text

05/02008 Study of SO2 adsorption and thermal regeneration over activated carbon-supported copper oxide catalysts

Fuel and Energy Abstracts ◽

10.1016/s0140-6701(05)82017-x ◽

2005 ◽

Vol 46 (5) ◽

pp. 298-299

Keyword(s):

Activated Carbon ◽

Copper Oxide ◽

Oxide Catalysts ◽

Thermal Regeneration ◽

So2 Adsorption

Download Full-text

Study of SO2 adsorption and thermal regeneration over activated carbon-supported copper oxide catalysts

Carbon ◽

10.1016/j.carbon.2004.05.004 ◽

2004 ◽

Vol 42 (11) ◽

pp. 2269-2278 ◽

Cited By ~ 89

Author(s):

Hui-Hsin Tseng ◽

Ming-Yen Wey

Keyword(s):

Activated Carbon ◽

Copper Oxide ◽

Oxide Catalysts ◽

Thermal Regeneration ◽

So2 Adsorption

Download Full-text

Carbon consumption and adsorption-regeneration of H2S on activated carbon for coke oven flue gas purification

Environmental Science and Pollution Research ◽

10.1007/s11356-021-14914-2 ◽

2021 ◽

Author(s):

Yuting Lin ◽

Yuran Li ◽

Zhicheng Xu ◽

Junxiang Guo ◽

Tingyu Zhu

Keyword(s):

Activated Carbon ◽

Flue Gas ◽

Coke Oven ◽

Gas Purification ◽

Carbon Consumption ◽

Flue Gas Purification

Download Full-text

Study on Thermal Regeneration for Caffeine-Saturated Activated Carbon

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.781-784.1941 ◽

2013 ◽

Vol 781-784 ◽

pp. 1941-1944 ◽

Cited By ~ 1

Author(s):

Zhao You Zhu ◽

Li Li Wang ◽

Wan Ling Wang ◽

Ying Long Wang

Keyword(s):

Activated Carbon ◽

Carbon Layer ◽

Carbon Surface ◽

Optimum Conditions ◽

Gas Velocity ◽

Thermal Regeneration ◽

Regeneration Time ◽

Before And After ◽

Carbon Regeneration ◽

Carrier Gas Velocity

Waste activated carbon (AC) containing caffeine was produced during the process of the production for caffeine. The process of treatment caffeine-saturated AC using thermal regeneration was explored and factors on the regeneration of activated carbon were investigated. The optimum conditions obtained were: temperature is 650 °C, the regeneration time is 180 min, the carrier gas velocity is 0.002 m/s, carbon layer thickness is 0.1 m. Under these conditions, activated carbon regeneration efficiency reached 90.3%. In addition, the pore structure of activated carbon before and after regeneration was characterized and the activated carbon surface area and pore size distribution under optimum conditions were determined by the adsorption isotherms.

Download Full-text

Comparison of chemical and thermal regeneration of aromatic compounds on exhausted activated carbon

Water Science & Technology ◽

10.2166/wst.1997.0287 ◽

1997 ◽

Vol 35 (7) ◽

pp. 279-285 ◽

Cited By ~ 22

Author(s):

P. C. Chiang ◽

E. E. Chang ◽

J. S. Wu

Keyword(s):

Molecular Structure ◽

Activated Carbon ◽

Physicochemical Properties ◽

Adsorption Capacity ◽

Aromatic Compounds ◽

Thermal Regeneration ◽

Desorption Efficiency ◽

Chemical Regeneration

In this investigation, nine typical compounds, i.e., phenol, 2-aminophenol, aniline, 2-chlorophenol, chlorobenzene, β-naphthol, naphthalene, α-naphthylamine and α-chloronaphthalene were introduced to evaluate the effects of the molecular structure and physicochemical properties of these selected adsorbates on the adsorption capacity and desorption efficiency of the activated carbon. Both the thermal and chemical regeneration methods were employed to compare the regeneration efficiencies among these adsorbates and adsorbent.

Download Full-text