Removal of Hg0 from simulated flue gas over silver-loaded rice husk gasification char

被引：13

作者：

Yang, Ru ^{[1
,2
]}

Diao, Yongfa ^{[1
]}

Abayneh, Befkadu ^{[1
]}

机构：

[1] Donghua Univ, Coll Environm Sci & Engn, Shanghai 201620, Peoples R China

[2] Henan Univ Urba Construct, Coll Energy & Architectural Engn, Pingdingshan 467001, Peoples R China

来源：

ROYAL SOCIETY OPEN SCIENCE | 2018年 / 5卷 / 09期

关键词：

Hg-0; silver-loaded rice husk gasification char; adsorption performance; adsorption-regeneration; ELEMENTAL MERCURY CAPTURE; CATALYTIC-OXIDATION; COAL COMBUSTION; CARBON; ADSORPTION; PERFORMANCE; FEATURES; SORBENT; OXYGEN; NO;

D O I：

10.1098/rsos.180248

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Mercury released into the atmosphere from coal combustion is harmful to humans and the environment. Rice husk gasification char (RHGC) is an industrial waste of biomass gasification power generation, which is silver-loaded to develop a novel and efficient sorbent for mercury removal from simulated flue gas. The experiment was carried out in a fixed-bed experimental system. The Hg-0 adsorption performance of RHGC was improved significantly after loading silver. Hg-0 adsorption capacity and mercury inlet concentration were found to be nonlinear. The adsorption capacity of RHGC decreased with the increase of reaction temperature. SO2 inhibited mercury removal, NO and HCl promoted mercury removal; the Hg-0 adsorption capacity in the simulated flue gas was higher than that in pure N-2. The silver-loaded rice husk gasification char (SRHGC) could be recycled about five times without significantly losing its removal efficiency. The SRHGC will not only reduce the cost of mercury removal but also save energy and reduce environmental pollution. At the same time, it provides a new way for the resource utilization of RHGC.

引用

页数：11

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