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Sulfur dioxide (SO2), ammonia (NH3), hydrogen sulfide (H2S), nitrogen dioxide (NO2), and nitric oxide (NO) are toxic gases from industrial exhaust, which could lead to acid rain, air pollution, health hazards, or corrosion of buildings. Removal of toxic gas is necessary for mitigating damage on human health, improving air quality, conforming to government regulations, and reusing in industry. However, capture of toxic gases with high efficiency, high selectivity, high sustainability, and low cost is still very challenging. Deep eutectic solvents (DESs) are novel green and designable solvents with high biocompatibility, high degradability, and low cost. Capturing toxic gases (e.g., SO2, NH3, H2S, NO2, and NO) by DESs is promising and environmentally friendly, which has attracted much attention. Here, we review the capture of SO2, NH3, H2S, NO2, and NO by DESs. CO2 capture by DESs is not included because several reviews on that topic have been published.
Chen et al. (Tue,) studied this question.
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