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Full-Text Articles in Engineering
Water Reclamation From Shale Gas Drilling Flow-Back Fluid Using A Novel Forward Osmosis-Vacuum Membrane Distillation Hybrid System, Xue-Mei Li, Baolong Zhao, Zhongwei Wang, Ming Xie, Jianfeng Song, Long Nghiem, Tao He, Chi Yang, Chunxia Li, Ghang Chen
Water Reclamation From Shale Gas Drilling Flow-Back Fluid Using A Novel Forward Osmosis-Vacuum Membrane Distillation Hybrid System, Xue-Mei Li, Baolong Zhao, Zhongwei Wang, Ming Xie, Jianfeng Song, Long Nghiem, Tao He, Chi Yang, Chunxia Li, Ghang Chen
Faculty of Engineering and Information Sciences - Papers: Part A
This study examined the performance of a novel hybrid system of forward osmosis (FO) combined with vacuum membrane distillation (VMD) for reclaiming water from shale gas drilling flow-back fluid (SGDF). In the hybrid FO-VMD system, water permeated through the FO membrane into a draw solution reservoir, and the VMD process was used for draw solute recovery and clean water production. Using a SGDF sample obtained from a drilling site in China, the hybrid system could achieve almost 90% water recovery. Quality of the reclaimed water was comparable to that of bottled water. In the hybrid FO-VMD system, FO functions as …
Ozonation Of N-Nitrosamines In The Reverse Osmosis Concentrate From Water Recycling Applications, Takahiro Fujioka, Stuart Khan, James Mcdonald, Long Nghiem
Ozonation Of N-Nitrosamines In The Reverse Osmosis Concentrate From Water Recycling Applications, Takahiro Fujioka, Stuart Khan, James Mcdonald, Long Nghiem
Faculty of Engineering and Information Sciences - Papers: Part A
This study aims to evaluate the performance of ozone treatment for removing N-nitrosamines from reverse osmosis (RO) concentrate in water recycling applications. In the absence of any N-nitrosamine precursors, the destruction efficiency of N-nitrosamines was dependent on their molecular weight or the length of the alkyl chain in their molecular structure. Experiments conducted with RO concentrate showed that ozonation could lead to the formation of N-nitrosodimethylamine (NDMA) and N-nitrosodiethylamine (NDEA), resulting in an increase in concentrations of these N-nitrosamines. Nevertheless, ozonation was effective for destruction of N-nitrosamines with molecular weight greater than that of NDEA (102 g/mol). 2014 Copyright 2014 …