scholarly journals Understanding the effect of thiophene sulfur on brominated petroleum coke for elemental mercury capture from flue gases

RSC Advances ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 4515-4522
Author(s):  
Yi Xiao ◽  
Xiuyun Liu ◽  
Yongfa Diao
Keyword(s):  
Petroleum Coke ◽  
Flue Gas ◽  
Elemental Mercury ◽  
Flue Gases ◽  
Chemical Forms ◽  
Mercury Capture ◽  
Carbon Based

Petroleum coke containing 5.85 wt% S was used to prepare a brominated sorbent to capture Hg from flue gas. HgBr and Hg(Br)Br are the primary chemical forms chemisorbed on the surface of this new carbon-based sorbent, and bind on the carbon site nearest to the S atom.

scholarly journals Low-Cost Organic Adsorbents for Elemental Mercury Removal from Lignite Flue Gas

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2174
Author(s):  
Marta Marczak-Grzesik ◽  
Stanisław Budzyń ◽  
Barbara Tora ◽  
Szymon Szufa ◽  
Krzysztof Kogut ◽  
...  
Keyword(s):  
Flue Gas ◽  
Low Cost ◽  
Elemental Mercury ◽  
Mercury Content ◽  
Flue Gases ◽  
Mercury Removal ◽  
Gas Purification ◽  
Gas Temperature ◽  
Corn Straw ◽  
Flue Gas Purification

The research presented by the authors in this paper focused on understanding the behavior of mercury during coal combustion and flue gas purification operations. The goal was to determine the flue gas temperature on the mercury emissions limits for the combustion of lignites in the energy sector. The authors examined the process of sorption of mercury from flue gases using fine-grained organic materials. The main objectives of this study were to recommend a low-cost organic adsorbent such as coke dust (CD), corn straw char (CS-400), brominated corn straw char (CS-400-Br), rubber char (RC-600) or granulated rubber char (GRC-600) to efficiently substitute expensive dust-sized activated carbon. The study covered combustion of lignite from a Polish field. The experiment was conducted at temperatures reflecting conditions inside a flue gas purification installation. One of the tested sorbents—tire-derived rubber char that was obtained by pyrolysis—exhibited good potential for Hg0 into Hg2+ oxidation, resulting in enhanced mercury removal from the flue. The char characterization increased elevated bromine content (mercury oxidizing agent) in comparison to the other selected adsorbents. This paper presents the results of laboratory tests of mercury sorption from the flue gases at temperatures of 95, 125, 155 and 185 °C. The average mercury content in Polish lignite was 465 μg·kg−1. The concentration of mercury in flue gases emitted into the atmosphere was 17.8 µg·m−3. The study analyzed five low-cost sorbents with the average achieved efficiency of mercury removal from 18.3% to 96.1% for lignite combustion depending on the flue gas temperature.

Multiform Sulfur Adsorption Centers and Copper-Terminated Active Sites of Nano-CuS for Efficient Elemental Mercury Capture from Coal Combustion Flue Gas

Langmuir ◽  
2018 ◽  
Vol 34 (30) ◽  
pp. 8739-8749 ◽  
Author(s):  
Zequn Yang ◽  
Hailong Li ◽  
Shihao Feng ◽  
Pu Li ◽  
Chen Liao ◽  
...  
Keyword(s):  
Flue Gas ◽  
Coal Combustion ◽  
Active Sites ◽  
Elemental Mercury ◽  
Mercury Capture ◽  
Sulfur Adsorption

Selenide functionalized natural mineral sulfides as efficient sorbents for elemental mercury capture from coal combustion flue gas

2020 ◽  
Vol 398 ◽  
pp. 125611 ◽  
Author(s):  
Qin Yang ◽  
Zequn Yang ◽  
Hailong Li ◽  
Jiexia Zhao ◽  
Jianping Yang ◽  
...  
Keyword(s):  
Flue Gas ◽  
Coal Combustion ◽  
Elemental Mercury ◽  
Natural Mineral ◽  
Mercury Capture ◽  
Mineral Sulfides

DENSITY FUNCTIONAL STUDY OF ELEMENTAL MERCURY ADSORPTION ON X (X=Mn, Si, Ti, Al, AND Zn)-DOPED CuO (110) SURFACE

2017 ◽  
Vol 24 (08) ◽  
pp. 1750119 ◽  
Author(s):  
PING HE ◽  
XIAOLONG PENG ◽  
ZHONGZHI ZHANG ◽  
JIANG WU ◽  
NAICHAO CHEN ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Flue Gas ◽  
Density Functional ◽  
Elemental Mercury ◽  
The Other ◽  
Functional Study ◽  
Mercury Adsorption ◽  
Complex Issue ◽  
Metal Element ◽  
Mercury Capture

Copper oxide (CuO) is proved to be a potential adsorbent for elemental mercury in the flue gas emitted from coal-fired power plant. However, the O-terminated CuO(110) surface has relatively week adsorption capacity for Hg. In this work, the doped method is applied to enhance the mercury adsorption capacity of O-terminated CuO(110). Mn, Si, Ti, Al and Zn are selected as the doped atom. It is found that only Zn-doped CuO (110) surfaces have the higher adsorption energy than the pure O-terminated CuO(110) surface. The mercury adsorption capacity is a complex issue, which depends on a combination of oxygen and doped element. The results suggest that the lower electropositive doped element is favorable for the improvement of mercury adsorption capacity. However, the lower electronegativity of oxygen atoms does not facilitate the mercury capture, which is different from the organic material. Cu and doped metal element, rather than oxygen atom, mainly determine mercury adsorption capacity of O-terminated CuO(110) surface, which leads to the lower adsorption capacity of the O-terminated CuO(110) surface than the Cu-terminated CuO(110) surface. The conclusions can also offer a valuable reference for the other metal oxide regarding mercury capture.

Bromination of petroleum coke for elemental mercury capture

2017 ◽  
Vol 336 ◽  
pp. 232-239 ◽  
Author(s):  
Yi Xiao ◽  
Deepak Pudasainee ◽  
Rajender Gupta ◽  
Zhenghe Xu ◽  
Yongfa Diao
Keyword(s):  
Petroleum Coke ◽  
Elemental Mercury ◽  
Mercury Capture

Nanosized Cation-Deficient Fe−Ti Spinel: A Novel Magnetic Sorbent for Elemental Mercury Capture from Flue Gas

2011 ◽  
Vol 3 (2) ◽  
pp. 209-217 ◽  
Author(s):  
Shijian Yang ◽  
Yongfu Guo ◽  
Naiqiang Yan ◽  
Daqing Wu ◽  
Hongping He ◽  
...  
Keyword(s):  
Flue Gas ◽  
Elemental Mercury ◽  
Magnetic Sorbent ◽  
Mercury Capture

Elemental Mercury Capture from Simulated Flue Gas by Graphite-Phase Carbon Nitride

2020 ◽  
Vol 34 (6) ◽  
pp. 6851-6861 ◽  
Author(s):  
Dongjing Liu ◽  
Zhen Zhang ◽  
Fei Luo ◽  
Jiang Wu
Keyword(s):  
Flue Gas ◽  
Carbon Nitride ◽  
Elemental Mercury ◽  
Graphite Phase ◽  
Mercury Capture
Sign in / Sign up

Export Citation Format

Share Document