The secondary release of mercury in coal fly ash-based flue-gas mercury removal technology

2015 ◽  
Vol 37 (1) ◽  
pp. 28-38 ◽  
Author(s):  
Jingfeng He ◽  
Chenlong Duan ◽  
Mingzhe Lei ◽  
Xuemei Zhu
Keyword(s):  
Fly Ash ◽  
Flue Gas ◽  
Coal Fly Ash ◽  
Mercury Removal ◽  
Removal Technology

Carbon capture and storage using coal fly ash with flue gas

2021 ◽  
Author(s):  
Tamilselvi Dananjayan Rushendra Revathy ◽  
Andimuthu Ramachandran ◽  
Kandasamy Palanivelu
Keyword(s):  
Fly Ash ◽  
Flue Gas ◽  
Carbon Capture ◽  
Coal Fly Ash ◽  
Carbon Capture And Storage ◽  
And Storage

Supercritical hydrothermal synthesis of zeolites from coal fly ash for mercury removal from coal derived gas

2015 ◽  
Vol 136 ◽  
pp. 96-105 ◽  
Author(s):  
Jiancheng Wang ◽  
Dekui Li ◽  
Fenglong Ju ◽  
Lina Han ◽  
Liping Chang ◽  
...  
Keyword(s):  
Fly Ash ◽  
Hydrothermal Synthesis ◽  
Coal Fly Ash ◽  
Mercury Removal ◽  
Supercritical Hydrothermal Synthesis

Experimental Research on Fly Ash Modified Adsorption of Mercury Removal Efficiency of Flue Gas

2013 ◽  
Vol 800 ◽  
pp. 132-138 ◽  
Author(s):  
Li Li ◽  
Si Wei Pan ◽  
Jiang Jun Hu ◽  
Ji Fu Kuang ◽  
Min Qi ◽  
...  
Keyword(s):  
Fly Ash ◽  
Removal Efficiency ◽  
Flue Gas ◽  
Power Plants ◽  
Physical Adsorption ◽  
Adsorption Properties ◽  
Mercury Removal ◽  
Immersion Method ◽  
Adsorption Temperature ◽  
Modified Fly Ash

Mercury in the flue gas in coal-fired power plant as the research object using halogen compound as the modified material, the fly ash was modified by chemical immersion method，Study on adsorption agent, the adsorption temperature, modified material and loading on mercury adsorption of flue gas in coal-fired power plants. Experiments showed that, iodine adsorption properties of modified fly ash was the most significant, with the increase of the sorbent dosage, Hg removal efficiency increased, fly ash adsorption amount of change was not obvious, between 80-140°C temperature range, fly ash on mercury existed mainly physical adsorption, the mercury removal efficiency decreased with the increase of temperature, chemical adsorption occurred at 160°C, mercury removal efficiency increased.

Experimental Study on Influence of Fly Ash on Mercury Removal in Flue Gas with UV Light

2013 ◽  
Vol 864-867 ◽  
pp. 1546-1551
Author(s):  
Yin Xia Cao ◽  
Ji Hui Fang ◽  
Jiang Wu ◽  
Xian Li ◽  
Chong Zhang ◽  
...  
Keyword(s):  
Fly Ash ◽  
Flue Gas ◽  
Uv Light ◽  
Mercury Content ◽  
Mercury Removal ◽  
Mercury Adsorption ◽  
Important Condition ◽  
Photocatalytic Effect ◽  
Photocatalytic Removal ◽  
Different Characteristics

The original fly ash samples fetched from the power plant and the treated fly ash samples after screening, magnetic separation and mixing were used in the experiment of photocatalytic removal on mercury in flue gas. The fly ash samples and the absorption solution after experiment were tested for mercury content. The results showed that different sizes of the original fly ash had different characteristics of photocatalytic removal of mercury. The adsorption of mercury by fly ash was an important condition for the occurrence of photocatalytic effect. When the mercury adsorption capacity of fly ash was stronger, the capacity of photocatalytic removal mercury was also greater. The presence of iron oxide on the fly ash surface can promote the capability of photocatalytic removal of mercury by fly ash. The presence of ultraviolet light can significantly promote Hg0 oxidize to Hg2+ by fly ash. Thus the oxidized mercury in the flue gas can be easily absorbed by the solution.

Flue gas desulfurization gypsum and coal fly ash as basic components of prefabricated building materials

2013 ◽  
Vol 33 (3) ◽  
pp. 628-633 ◽  
Author(s):  
Antonio Telesca ◽  
Milena Marroccoli ◽  
Daniela Calabrese ◽  
Gian Lorenzo Valenti ◽  
Fabio Montagnaro
Keyword(s):  
Fly Ash ◽  
Flue Gas ◽  
Building Materials ◽  
Coal Fly Ash ◽  
Flue Gas Desulfurization ◽  
Prefabricated Building

A low-cost adsorbent from coal fly ash for mercury removal from industrial wastewater

2017 ◽  
Vol 5 (1) ◽  
pp. 391-399 ◽  
Author(s):  
Mahshid Attari ◽  
Syed Salman Bukhari ◽  
Hossein Kazemian ◽  
Sohrab Rohani
Keyword(s):  
Fly Ash ◽  
Industrial Wastewater ◽  
Low Cost ◽  
Coal Fly Ash ◽  
Mercury Removal

scholarly journals Mercury Removal From Coal Combustion Flue Gas by Pyrite-Modified Fly Ash Adsorbent

2021 ◽  
Author(s):  
Liqiang QI ◽  
Xu WANG ◽  
Wen WANG ◽  
Jingxin LI ◽  
Yan HUANG
Keyword(s):  
Fly Ash ◽  
Flue Gas ◽  
Coal Combustion ◽  
Gas Flow ◽  
Active Component ◽  
Mercury Removal ◽  
Gas Flow Rate ◽  
Mercury Adsorption ◽  
Mass Proportion ◽  
Modified Fly Ash

Abstract Pyrite and fly ash have certain advantages in adsorption and mercury oxidation. The pyrite-modified fly ash (PY+AC-FA) mercury adsorbent was prepared by mixing pyrite (PY) with acid-modified fly ash (AC-FA), which has better mercury removal effect than AC-FA. The experimental results of mercury adsorption show: when the reaction temperature is 50°C, the best doping proportion of modified fly ash is 20wt%, the mass proportion of pyrite to acid modified fly ash is 4:1, and the flue gas flow rate is 1.0L/min, the adsorbent has the best performance, and the adsorption rate of mercury reaches 91.92%. BET, XRD, SEM, TG-DSG and XRF were used to characterize these adsorbents. And the mechanism of mercury removal of pyrite-modified fly ash adsorbent is inferred: Hg0 is first adsorbed on the surface of the adsorbent, and then oxidized to HgS by the active component FeS2 in pyrite-modified fly ash.

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