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| 1 | 燃煤飞灰中矿物质对烟气中As、Se、Pb形态分布影响的热力学研究显示文摘基于热力学平衡的原理,研究了燃煤烟气中As、Se、Pb三种重金属与飞灰中主要矿物质CaO、Al2O3、Fe2O3、MgO的反应。结果表明,As在1600 K时与CaO反应开始生成Ca3(AsO4)2,且随着CaO含量的增大,Ca3(AsO4)2的温度区间变窄,说明CaO对煤中As的挥发有抑制作用;As与Al2O3在1700 K时开始反应,随着温度降低最后全部以AlAsO 4的形式存在;As与Fe2O3反应生成FeAsO4;As与MgO在600-1500 K以Mg3(AsO4)2(s)形式存在,低于600 K时转化为As2O5(s)。Se与CaO和MgO在低于600 K时分别以CaSeO3(s)和MgSeO3(s)的形式存在,与Al2O3、Fe2O3不发生反应;CaO与Pb在900-1100 K时反应生成了(CaO)2(PbO2)(s);Pb与Al2O3会发生反应,在900-1200 K时有固态(PbO)(Al2O3)6(s)生成。Fe2O3、MgO对Pb的形态分布基本没有影响。 | 刘忠 王硕 白宝泉 | 2020 | 燃料化学学报2020，48，12： | 5 |
| 2 | Selenium uptake and simultaneous catalysis of sulfite oxidation in ammonia-based desulfurization显示文摘Accelerating the(NH_4)_(2)SO_(3) oxidation gives rise to the reclaiming of byproduct, while there are secondary environmental risks from reduction of the coexisted selenium species by sulfite. In this study, a bi-functional Co-SBA-15-SH, were synthesized through Co impregnation and sulfhydryl(-SH) decoration, which can simultaneously uptake Se and accelerate sulfite oxidation efficiently. Meanwhile, the adsorption kinetics and migration mechanism of Se species were revealed through characterization and density functional calculations, with maximum adsorption capacity of 223 mg/g. The inhibition of Se~0 re-emission and poisonous effect of Se on sulfite oxidation was also investigated. Using the findings of this study, the ammonia desulfurization can be improved by enabling purification of the byproduct and lowering the toxicity of effluent by removing toxic pollutants. | Qiangwei Li Yuguo Wang Lei Xing Tieyue Qi Lin Zhang Jie Liu Shihan Zhang Yongliang Ma Lidong Wang | 2021 | Journal of Environmental Sciences2021，33，5： | 0 |
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