Simultaneous removal of perchlorate and nitrate in a combined reactor of sulfur autotrophy and electrochemical hydrogen autotrophy

Design and controllable synthesis of ethylenediamine-grafted ion imprinted magnetic polymers for highly selective adsorption to perchlorate

“…5 Conventional treatment processes, such as coagulation, precipitation, ltration and disinfection, cannot remove ClO 4 À efficiently. 6,7 Current technologies for ClO 4 À removal from drinking water and groundwater include adsorption, 8,9 ion exchange, 10,11 chemical reduction [12][13][14] bioremediation, 14,15 etc. An ion imprinted polymer (IIP) [16][17][18] is able to recognize ions whilst keeping the unique virtues of molecular imprinting polymers (MIP), i.e., structure predictability, recognition speci-city and application universality.…”

“…The adsorptive amounts of ClO 4 À and other ions to nFe 3 O 4 @IIPs and nFe 3 O 4 @NIP were then compared. The specic recognition properties of nFe 3 O 4 @IIPs are evaluated by imprinting factor (a), dened as eqn(7), and selectivity factor (b) dened as eqn (8):30…”

Pd0‐ and Au0‐Nanoparticles Catalyze the Reduction of Perchlorate by ·C(CH3)2OH Radicals

“…A variety of processes to remove perchlorate from water have been developed owing to the environmental importance . These include adsorption, biodegradation, chemical reduction, electrochemical reduction, bio‐electrochemical reduction, and photo‐electrocatalytic reduction …”

Characteristics of electron transport chain and affecting factors for thiosulfate-driven perchlorate reduction

“…Strategies for treating perchlorate-contaminated waters include physicochemical methods and biological methods (Baidas et al, 2011;Zhao et al, 2011;Xu and Logan, 2003). Biological methods are a promising alternative to physicochemical approaches because of the low operational cost associated with good performance for perchlorate remediation (Xu et al, 2015;Gao et al, 2016;Xu and Logan, 2003).…”

“…Heterotrophic reduction of perchlorate has been done using organic matter as electron donors, including acetate, lactate, and ethanol (Anupama et al, 2015;Xu et al, 2015;Xu and Logan, 2003). However, the residual organic substrate in the effluent can stimulate microbial growth in water distribution systems and contribute to the formation of potentially toxic trihalomethanes during disinfection by chlorination (Gao et al, 2016). Autotrophic reduction of perchlorate has been undertaken using inorganic matter as electron donors, including hydrogen (London et al, 2011;Nerenberg et al, 2008Nerenberg et al, , 2006, reduced iron (Son et al, 2006), and sulfur compounds (Gao et al, 2016;Boles et al, 2012;Ju et al, 2008Ju et al, , 2007 to overcome this problem.…”