Acceleration of the reaction of H2S and SO2 by non-thermal plasma to improve the mercury adsorption performance of activated carbon

2021 ◽  
pp. 130144
Author(s):  
Qingyu Ji ◽  
Guangqian Luo ◽  
Mengting Shi ◽  
Renjie Zou ◽  
Can Fang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Thermal Plasma ◽  
Mercury Adsorption ◽  
Adsorption Performance ◽  
Non Thermal Plasma

Gas-Phase Mercury Removal by Modified Activated Carbons Treated with Ar-O2 Non-Thermal Plasma under Different O2 Concentrations

2018 ◽  
Vol 17 (3) ◽  
Author(s):  
Long Wu ◽  
Zhongsheng Shang ◽  
Hailu Zhu ◽  
Zhanyong Li ◽  
Guangqian Luo ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Thermal Plasma ◽  
Volume Fraction ◽  
Activated Carbons ◽  
Mercury Removal ◽  
Plasma Modification ◽  
Carbon Surface ◽  
Mercury Adsorption ◽  
Modified Activated Carbon ◽  
Non Thermal Plasma

Abstract During the plasma modification process on activated carbon surface, reactive gas of O2 in the plasma field dominates the formation of oxygen-containing groups on activated carbon surface, which is a key factor that affects the mercury adsorption. Previous studies showed that change the O2 concentration would influence the generation of oxygen-containing groups and thus affect the mercury adsorption. It is important to investigate the effects of O2 concentration in the non-thermal plasma field on the mercury adsorption characteristic of modified activated carbon. This work presents the results of the novel use of non-thermal plasma in Ar-O2 gas to increase surface oxygen functionality on the surface of a commercially available biomass carbon. The volume fraction of O2 in the Ar-O2 mixture was varied from 10 % to 100 %. The surface physical and chemistry properties of modified activated carbon were analyzed by using BET, FT-IR and XPS techniques. Results showed that activated carbon modified by Ar-O2 non-thermal plasma showed significantly better mercury removal performance compared with the original activated carbon. Moreover, increase O2 concentration in the plasma field can further increase the mercury removal efficiency of modified activated carbon. Higher O2 concentration can produce more O radicals during plasma system and facilitated the formation of carbonyl and ester groups on activated carbon surface and thus enhanced the mercury removal. Temperature programmed desorption (TPD) results indicated that mercury reacted with ester groups were prior to carbonyl groups. When O2 concentration increased to 100 %, the ester groups of modified activated carbon dominated the mercury adsorption process.

Regeneration of activated carbon saturated with odors by non-thermal plasma

Chemosphere ◽  
2013 ◽  
Vol 92 (6) ◽  
pp. 725-730 ◽  
Author(s):  
Jie Chen ◽  
Xinchao Pan ◽  
Jianwei Chen
Keyword(s):  
Activated Carbon ◽  
Thermal Plasma ◽  
Non Thermal Plasma

Enhancement of Cu(II) adsorption on activated carbons by non-thermal plasma modification in O2, N2 and O2/N2 atmospheres

2020 ◽  
Vol 18 (4) ◽  
Author(s):  
Long Wu ◽  
Yimeng Cai ◽  
Jiayong Tu ◽  
Shizhe Wang ◽  
Noriyuki Kobayashi ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Thermal Plasma ◽  
Activated Carbons ◽  
Chemical Properties ◽  
Plasma Modification ◽  
Adsorption Performance ◽  
Ft Ir ◽  
Non Thermal Plasma ◽  
Physical And Chemical ◽  
And Chemical Properties

AbstractActivated carbon (AC) was modified by using non-thermal plasma in O2, N2 and O2/N2 atmospheres to increase its Cu(II) adsorption capacity and quantify the influences of the modifying atmospheres. SEM, BET, FT-IR and XPS were used to characterize the surface physical and chemical properties of AC. The results show that the AC modified by using plasma had significantly better Cu(II) adsorption performance than the raw AC. Among the O2, N2 and O2/N2 atmospheres, the AC with plasma modification in N2 showed best Cu(II) adsorption performance and the Cu(II) adsorption capacity was 369.5% higher than the raw AC. The AC modified in O2 atmosphere can form C—COOH groups, while the AC modified in N2 atmosphere can form C—NH2 groups. These two groups are both beneficial for Cu(II) adsorption, where the —NH2 groups are more effective for Cu(II) adsorption compared to —COOH groups. The chemisorption dominated the Cu(II) adsorption on the plasma modified AC and the adsorption performance was dependent on the surface functional groups properties of AC.

Diesel engine exhaust denitration using non-thermal plasma with activated carbon

2020 ◽  
Vol 5 (9) ◽  
pp. 1845-1857
Author(s):  
Zongyu Wang ◽  
Hailang Kuang ◽  
Jifeng Zhang ◽  
Wei Zhang ◽  
Lilin Chu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Diesel Engine ◽  
Thermal Plasma ◽  
Exhaust Gas ◽  
Engine Exhaust ◽  
Diesel Engine Exhaust ◽  
Good Potential ◽  
Non Thermal Plasma ◽  
Set Up

A diesel engine de-NOx system combining non-thermal plasma and activated carbon was set up. The de-NOx efficiency reaches 91.8% and 92.5% for simulated gas and real exhaust gas, respectively. It has good potential to replace vanadium-based SCR.

Adsorptive removal of gas-phase mercury by oxygen non-thermal plasma modified activated carbon

2016 ◽  
Vol 294 ◽  
pp. 281-289 ◽  
Author(s):  
Jun Zhang ◽  
Yufeng Duan ◽  
Qiang Zhou ◽  
Chun Zhu ◽  
Min She ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Gas Phase ◽  
Thermal Plasma ◽  
Modified Activated Carbon ◽  
Adsorptive Removal ◽  
Non Thermal Plasma

Non-thermal plasma enhanced dry reforming of CH4 with CO2 over activated carbon supported Ni catalysts

2019 ◽  
Vol 475 ◽  
pp. 110486 ◽  
Author(s):  
Huaqin Wang ◽  
Jun Han ◽  
Zhao Bo ◽  
Linbo Qin ◽  
Yu Wang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Thermal Plasma ◽  
Dry Reforming ◽  
Ni Catalysts ◽  
Non Thermal Plasma ◽  
Supported Ni Catalysts ◽  
Supported Ni
Sign in / Sign up

Export Citation Format

Share Document