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Abstract
Bromide in flue gas desulfurization (FGD) wastewater contains a significant concentration of bromide which can contaminate potable water sources. During water disinfection, bromide can form deleterious brominated disinfection by products; therefore, removing bromide from FGD wastewater is essential. To determine a cost-effective method for removing bromide from FGD wastewater, we evaluated the use of silver modified biochar in batch and column tests. We report that silver modified biochar showed promise in batch and column tests with removal efficiencies of >90% in batch tests and sustained removal efficiencies between 65% and 80% in column tests. We conclude that silver modified biochar is an effective technique for bromide removal from FGD wastewater due to specific adsorption between silver and bromide. This data may be used for mass transfer modeling to predict treatment performance, and it may play a role in designing fixed bed adsorption systems for FGD wastewater.