This study examines the impacts of trade credit insurance on the optimal decisions of the firm that remanufactures used products and implements emissions abatement strategy under carbon tax policy. In the presence of revenue loss risks generated by uncertain factors in the trading process with...

Wastewater generated from N-methylpyrrolidone (NMP) manufacture was used as electron donor for denitrification in tertiary treatment. The organic components of NMP wastewater were mainly NMP and monomethylamine (CH3NH2), and their biodegradation released ammonium that was nitrified to nitrate...

Denitrification is an important step in domestic wastewater treatment, but providing bioavailable electron donors is an expense. However, some industrial wastewaters contain organic compounds that could be a no-cost electron donor. In this work, quinoline was used as an electron donor to drive...

The Anoxic/Oxic (A/O) process involves recirculating mixed liquor between its A and O tanks so that nitrate produced in the O tank can be used to for denitrification with influent COD in the A tank. Because biomass is recirculated along with nitrate, A/O operation leads to similar microbial...