CO2 Sequestration in Mixtures of Sodium Humate and Waste Gypsum

Zhi Guo Sun; Hong Yong Xie; Zhong Ping Xu

doi:10.4028/www.scientific.net/AMM.448-453.634

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 448-453CO2 Sequestration in Mixtures of Sodium Humate and...

CO₂ Sequestration in Mixtures of Sodium Humate and Waste Gypsum

Abstract:

A novel process of CO₂ sequestration in mixtures of sodium humate (HA-Na) and waste gypsum was proposed. Experiments investigated the CO₂ absorption properties for HA-Na solution. HA-Na solution shows great performance in CO₂ absorption, and the CO₂ absorption amount reaches to 0.96 mol for 3 hours with 100 mL HA-Na solution (0.04 g/mL), at the condition of 15 °C, gas flow rate of 40 mL/h. the CO₂ sequestration mechanism by HA-Na and desulfurization gypsum (DG) was analyzed. CaSO₄ plays a key role in the CO₂ absorption by HA-Na solution. A permanent method of CO₂ sequestration is achieved by the mixtures of HA-Na and waste gypsum.