Abstract
In this study, we tested the absorption of in combustion gas into an alkaline wastewater to simultaneously control and wastewater. During the experiment, we investigated the effects of operating parameters on neutralization characteristics of the wastewater by using in a bench-scale semi-batch jet loop reactor (0.1 m diameter and 1.0 m in height). The operating parameters investigated in the study are gas flow rate of 1.0-2.0 L/min, liquid recirculation flow rate of 4-32 L/min, and liquid temperature of . It was shown that the initial pH of wastewater rapidly decreased with increased gas flow rate for a given liquid recirculation flow rate. This was due to the increase in the gas holdup and the interfacial area at higher gas flow rate in the reactor. At constant gas flow rate, the time required to neutralize the wastewater initial pH of 10.1 decreased with liquid recirculation flow rate (), reached a minimum value in the range of
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