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Utilization of Bidirectional Cation Transport in a Thin Film Composite Membrane: Selective Removal and Reclamation of Ammonium from Synthetic Digested Sludge Centrate via an Osmosis-Distillation Hybrid Membrane Process
Wang, Peizhi; Li, Ji; Zhang, Xiaolei; Lu, Xinglin; Liu, Qianliang; Zhang, Tao; Cheng, Wei; Ma, Jun
2020-08-18
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume54Issue:16Pages:10313-10322
AbstractSelective removal and resource recovery of ammonium nitrogen (NH4+-N) from high-strength ammonium waste streams is of practical importance for biological wastewater treatment and environmental protection. In this study, we demonstrate the simultaneous removal and reclamation of ammonium from synthetic digested sludge centrate via a novel osmosis-distillation hybrid membrane (ODHM) process. Using NaHCO3 as the draw solute, ammonium diffuses from the synthetic centrate to the draw solution by utilizing the bidirectional cation transport nature of the thin film composite (TFC) membrane. Then, NH4 is converted to gaseous NH3 at 60 degrees C and recovered by a sweeping gas membrane distillation (SGMD) process. Herein, the bidirectional transport of monovalent cations in the osmotic process, selectivity of TFC membranes for different cations, and recovery of the draw solution following the extraction of ammonia through the SGMD process were systematically investigated. The removal of NH4+-N from the synthetic centrate achieved 21.34% during a 6-h continuous operation of the ODHM system, with ammonium fluxes through the TFC and SGMD membranes at 1.39 and 0.57 mol m(-2) h(-1), respectively. A secondary interfacial polymerization was proposed to further enhance ammonium transport through the TFC membrane. Results reported here highlight the potential of the ODHM process for the selective removal and reclamation of ammonium from ammonium-rich waste streams.
Department环境水质学国家重点实验室
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/45011
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Wang, Peizhi,Li, Ji,Zhang, Xiaolei,et al. Utilization of Bidirectional Cation Transport in a Thin Film Composite Membrane: Selective Removal and Reclamation of Ammonium from Synthetic Digested Sludge Centrate via an Osmosis-Distillation Hybrid Membrane Process[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2020,54(16):10313-10322.
APA Wang, Peizhi.,Li, Ji.,Zhang, Xiaolei.,Lu, Xinglin.,Liu, Qianliang.,...&Ma, Jun.(2020).Utilization of Bidirectional Cation Transport in a Thin Film Composite Membrane: Selective Removal and Reclamation of Ammonium from Synthetic Digested Sludge Centrate via an Osmosis-Distillation Hybrid Membrane Process.ENVIRONMENTAL SCIENCE & TECHNOLOGY,54(16),10313-10322.
MLA Wang, Peizhi,et al."Utilization of Bidirectional Cation Transport in a Thin Film Composite Membrane: Selective Removal and Reclamation of Ammonium from Synthetic Digested Sludge Centrate via an Osmosis-Distillation Hybrid Membrane Process".ENVIRONMENTAL SCIENCE & TECHNOLOGY 54.16(2020):10313-10322.
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