The effect of N-doping and halide-doping on the activity of CuCoO4 for the oxidation of elemental mercury

The Removal of Elemental Mercury by Potassium Permanganate-modified Rice Husk Ash Sorbents

“…It could be assumed that Hg 0 vapor reacted with impregnated KMnO 4 on the surface; that is, chemisorption occurred on the surface of CaO/RHA/KMnO 4 that, being a chemical process, required activation energy and proceeded at a limited rate, which increased with a rise in temperature. This result is in agreement with other investigations (Mei et al, 2008;Qiao et al, 2009).…”

“…It is well known that Hg 0 is more difficult to capture than its oxidized forms from combustion flue-gases, due to its higher volatility, chemical inertness, and insolubility in water (Galbreath and Zygarlicke, 1996). In recent years, many studies have been conducted to evaluate the effectiveness of Hg 0 adsorption by solid sorbents (Baek et al, 2007;Lee et al, 2004;Lee and Bae, 2009;Mei et al, 2008;Tian et al, 2009). One method of preventing Hg 0 emissions is to use Ca-based sorbents, which is not only potentially multi-pollutant control, but also should create the environmentally benign ash product.…”

Hg2+ reduction and re-emission from simulated wet flue gas desulfurization liquors

“…Reports estimated that methyl mercury level in edible fish would double near a 1000 MW power plant [4]. Based on available evidences of the mercury effects on health effects, the US Environmental Protection Agency (EPA) issued the Clean Air Mercury Rule (CAMR) to regulate mercury release into the environment [4,8].…”

The effect of nitrogen doping on mercury oxidation/chemical adsorption on the CuCo2O4(110) surface: a molecular-level description

“…This is consistent with our DFT calculation results. When the temperature is above 623 K, the Hg 0 removal abilities of CuCo 2 O 4 and N doped CuCo 2 O 4 decrease and those of N-doped CuCo 2 O 4 decrease even faster than CuCo 2 O 4 [20]. The lower the E a À1 is, the easier the reverse reaction of mercury oxidation will be.…”

“…Therefore, there should be an optimal N-doping dosage to balance the effect of the O atom decrease on the N-doped CuCo 2 O 4 (110) surface and that of the activation energy decrease due to N-doping. The experimental results showed that, for N doped CuCo 2 O 4 , the optimal doping ratio of N to Co is 30 mol% [20].…”