Pilot-scale investigation of flowrate and temperature influence on the performance of hollow fiber forward osmosis membrane in osmotic concentration process

Jalab, Rem; Awad, Abdelrahman M.; Nasser, Mustafa S.; Minier-Matar, Joel; Adham, Samer

doi:10.1016/j.jece.2020.104494

Cited by 22 publications

(10 citation statements)

References 59 publications

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“…Thus, we have the total heat requirement Q: It can be seen that the increased operating temperatures result in the increase in water flux and RSF for both DSs. These results are consistent with those from previous FO lab scale studies [5,28,29] with ionic DSs such as NaCl, KCl and Na 2 SO 4 and by pilot scale FO study [30]. The increase in water flux and RSF is easy to understand because.…”

Section: Heat Balance and Heat Demand In A Fo-md System Without Inter...supporting

confidence: 91%

Temperature Effects of MD on Municipal Wastewater Treatment in an Integrated Forward Osmosis and Membrane Distillation Process

Almoalimi¹,

Liu²,

Booth³

et al. 2022

Processes

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An integrated forward osmosis (FO)-membrane distillation (MD) process is promising for the treatment and resource recovery from municipal wastewater. As higher temperature is applied in MD, it could affect the performance of both FO and MD units. This study aimed to investigate the effects of the type of draw solution (DS) and feed solution (FS) such as ammonium solution or municipal wastewater containing ammonium at higher temperatures on membrane treatment performance. It is found that higher FS and DS temperatures resulted in a higher water flux and a higher RSF with either NaCl or glucose as DS due to the increased diffusivity and reduced viscosity of DS. However, the water flux increased by 23–35% at elevated temperatures with glucose as DS, higher than that with NaCl as DS (8–19%), while the reverse solute flux (RSF) increase rate with NaCl as DS was two times higher than that with glucose as DS. In addition, the use of NaCl as DS at higher temperatures such as 50 and FS at 42 °C resulted in increased forward ammonium permeation from the FS to the DS, whereas ammonium was completely rejected with glucose as DS at all operating temperatures. Reducing pH or lowering the temperature of DS could improve ammonium rejection and minimize ammonia escape to the recovered water, but extra cost or reduced MD performance could be led to. Therefore, the results suggest that in an integrated FO-MD process with DS at higher temperatures such as 50 °C, glucose is better than NaCl as DS. Furthermore, a simplified heat balance estimation suggests that internal heat recovery in the FO-MD system is very necessary for treating municipal wastewater treatment. This study sheds light on the selection of DS in an integrated FO-MD process with elevated temperature of both FS and DS for the treatment of wastewater containing ammonium. In addition, this study highlights the necessity of internal heat recovery in the integrated FO-MD system.

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Section: Heat Balance and Heat Demand In A Fo-md System Without Inter...supporting

confidence: 91%

Temperature Effects of MD on Municipal Wastewater Treatment in an Integrated Forward Osmosis and Membrane Distillation Process

Almoalimi¹,

Liu²,

Booth³

et al. 2022

Processes

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“…The water production rate of the FO process is determined by eqn (2). 23 R f is the water recovery rate of the FO system, V f is the initial feed volume, and V p is the volume of liquid that permeated to the draw side.…”

Section: Methodsmentioning

confidence: 99%

Pilot-scale evaluation of the sustainability of membrane desalination systems for the concentrate volume minimization of coal chemical wastewater

Chen,

Ma,

Zhang

et al. 2024

Environ. Sci.: Water Res. Technol.

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“…The effluent feed was analyzed for the organic and inorganic contaminants (Table 3). Hydrochloric acid (HCL) was added to the PW feed to maintain the pH within the TFC membrane's tolerance range (7)(8).…”

Section: Feed and Draw Solutionsmentioning

confidence: 99%

“…Research on using forward osmosis (FO) to treat industrial wastewater has been active for decades [2,[7][8][9]. The FO technology is an inherently low-pressure system since it is based on a naturally occurring phenomenon: osmosis, where a high concentration solution, draw solution (DS), can be used to transfer pure water molecules from a low concentration stream, or feed.…”

Section: Introductionmentioning

confidence: 99%

Pilot scale evaluation of thin film composite membranes for reducing wastewater volumes: osmotic concentration process

et al. 2023

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Gas operations generate large volumes of wastewater, necessitating efficient water management schemes. This study evaluates a forward osmosis (FO) pilot plant for volumes reduction of gas industry process water (PW). The osmotic pressure difference between seawater (40 g/L Total Dissolved Solids (TDS)) and low salinity (2 g/L TDS) PW is used for the osmotic concentration (OC). In the OC, PW volumes get reduced, while diluted draw solution (DS) is directly discharged, obviating the high-energy DS recovery step. A thin-film composite hollow fiber (HF) FO membrane was tested under FO mode using synthetic solutions to assess the performance on the OC unit. Subsequently, the pilot unit was subjected to PW feed for 48 h of continuous operation, primarily to evaluate water flux, reverse solute flux (RSF), and membrane fouling. The cleaning requirement to remove contaminants from the membrane surface was examined. The membrane achieved a water flux and RSF between 11.5 to 6.43 LMH and 38.57 to 9.45 mmol h−1 m−2, respectively at feed recovery rates between 60 and 90%. The membrane achieved a water flux of 10 LMH, which slightly decreased to 9.6 after 48 h of operation, mainly due to inorganic scaling. Lastly, cleaning with citric acid succeeded in recovering the initial water flux.

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Pilot-scale investigation of flowrate and temperature influence on the performance of hollow fiber forward osmosis membrane in osmotic concentration process

Cited by 22 publications

References 59 publications

Temperature Effects of MD on Municipal Wastewater Treatment in an Integrated Forward Osmosis and Membrane Distillation Process

Temperature Effects of MD on Municipal Wastewater Treatment in an Integrated Forward Osmosis and Membrane Distillation Process

Pilot-scale evaluation of the sustainability of membrane desalination systems for the concentrate volume minimization of coal chemical wastewater

Pilot scale evaluation of thin film composite membranes for reducing wastewater volumes: osmotic concentration process

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