Coal combustion is one of the major pathways by which arsenic enters the ecological environment. An effective method to control arsenic emissions in-furnace is to transform the arsenic from a vapour to fly ash particles using mineral sorbents. However, flue gas components have a significant effect on gas-phase arsenic adsorption, which limits the industrial application of mineral sorbents. In this paper, the effect mechanism of flue gas components (NaCl/HCl/SO₂/CO₂) on gas-phase arsenic adsorption over different mineral oxide sorbents was investigated. The results demonstrate that the order of arsenic adsorption is CaO > MgO/Fe₂O₃> NaCl > Al₂O₃ > SiO₂. NaCl promotes the arsenic adsorption of CaO above 800 °C, and the arsenic removal efficiency of CaO with 5 % NaCl is 52.51 % at 900 °C. NaCl inhibits the arsenic adsorption of MgO and Fe₂O₃, and promotes arsenic adsorption by Al₂O₃ and SiO₂. Acid gases inhibit arsenic adsorption by the sorbents and the order of the inhibition intensity of acid gases at 700 °C is HCl > SO₂ > CO₂. The active sites (CaO, FeO, or AlO bonds) in the sorbents are the main reaction sites for arsenic adsorption, and captured arsenic is in the form of AsO₂¹⁻ and AsO₄^3-.

煤燃烧是砷进入生态环境的主要途径之一。控制炉内砷排放的有效方法是使用矿物吸附剂将砷从蒸气转化为粉煤灰颗粒。但是，烟气成分对气相砷的吸附具有重要影响，这限制了矿物吸附剂的工业应用。本文研究了烟气成分（NaCl / HCl / SO ₂ / CO ₂）对不同矿物氧化物吸附剂上气相砷吸附的影响机理。结果表明，砷的吸附顺序为CaO> MgO / Fe ₂ O ₃ > NaCl> Al ₂ O ₃ > SiO ₂。NaCl在800°C以上时会促进CaO的砷吸附，在900°C下，含5％NaCl的CaO的除砷效率为52.51％。NaCl抑制MgO和Fe ₂ O _3的砷吸附，并促进Al ₂ O ₃和SiO _2的砷吸附。酸性气体抑制了吸附剂对砷的吸附，酸性气体在700°C时抑制强度的顺序为HCl> SO ₂ > CO ₂。吸附剂中的活性位点（Ca O，FeO或AlO键）是砷吸附的主要反应位点，捕获的砷呈AsO ₂ ^1-和AsO ₄ ^3-的形式。