Effect of residual H2O2 on the removal of advanced oxidation byproducts by two types of granular activated carbon

Emerging investigator series: low doses of electron beam irradiation effectively degrade 1,4-dioxane in water within a few seconds

“…For instance, air-stripping process is useful to remove volatile organics ( e.g. , aldehydes and EGDF), adsorption by activated carbon can help remove organic acids, 47 and aldehydes and organic acids both have high biodegradation potential to be degraded in biologically active filtration and activated sludge systems. 48…”

“…Instead, these byproducts could easily be removed by conventional treatment methods. 47 Either additional treatment time should be applied by e-beam irradiation or coupling the e-beam technology with conventional water treatment methods need to be carefully evaluated depending on the required treated water quality.…”

“…Alternatively, these intermediates are more vulnerable to traditional treatment methods or natural attenuation processes (e.g., biodegradation) and hence can be easily removed in the following treatment stages. For instance, airstripping process is useful to remove volatile organics (e.g., aldehydes and EGDF), adsorption by activated carbon can help remove organic acids, 47 and aldehydes and organic acids both have high biodegradation potential to be degraded in biologically active filtration and activated sludge systems. 48…”

Trace Organic Contaminant Removal from Municipal Wastewater by Styrenic β-Cyclodextrin Polymers

“…The polymer was evaluated for the removal efficiencies of 13 TrOCs that were spiked into nanopure water and municipal wastewater. Performance was benchmarked to two commercial adsorbents: a regenerable GAC Filtrasorb 600 and a single-use IX resin Amberlite PSR2+ . Batch adsorption and rapid small-scale column test (RSSCT) experiments offered important insights into the performance of StyDex polymers for TrOC removal in a complex wastewater matrix.…”

“…The polymer was evaluated for the removal efficiencies of 13 TrOCs that were spiked into nanopure water and municipal wastewater. Performance was benchmarked to two commercial adsorbents: a regenerable GAC Filtrasorb 600 40 and a single-use IX resin Amberlite PSR2+. 41 ■ MATERIALS AND METHODS Materials.…”