Permeable reactive barriers (PRBs) composed of zero-valent iron (ZVI) are susceptible to passivation, resulting in substantially decreased rates of chlorinated solvent removal over time. In this study, the application of low electrical direct current (DC) to restore the reductive capacity of passivated ZVI was examined. Electrical current was applied to a laboratory column reactor filled with a...

A novel chemical absorption-biological reduction (CABR) integrated process, employing ferrous ethylenediaminetetraacetate (Fe(II)EDTA) as a solvent, is deemed as a potential option for NOx removal from the flue gas. Previous work showed that the Fe(II)EDTA concentration was critical for the NOx removal in the CABR process. In this work, the pathway of FeEDTA (Fe(III)/Fe(II)-EDTA) transformation...

Introduction. In most high-throughput chemical synthesis processes, whether it be combinatorial or parallel synthesis, one is faced with the task of having to remove solvent from a large number of containers, such as glass tubes or vials. Removal of solvent by evaporation is a necessary step following various synthetic workup or chromatographic procedures. Solvent removal from a collection of c...

The objective of this study was to optimize continuous acetone-butanol-ethanol (ABE) fermentation using a two stage chemostat system integrated with liquid-liquid extraction of solvents produced in the first stage. This minimized end product inhibition by butanol and subsequently enhanced glucose utilization and solvent production in continuous cultures of Clostridium acetobutylicum B 5313. Dur...

7 1 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072 (China) 8 2 Department of Environmental Science and Technology, School of Applied Sciences, Cranfield 9 University, Cranfield MK43 0AL (UK) 10 3 National Engineering Research Centre for Distillation Technology, Tianjin 300072 (China) 11 a Present address: Graduate School at Shenzhen, Tsinghua University, Shenz...