Renewable energy by closed-loop pressure retarded osmosis using hollow fiber module

Yaseen, Farah Adil; Al-Alalawy, Ahmed Faiq; Sharif, Adel O.

doi:10.1063/5.0000156

Cited by 5 publications

(4 citation statements)

References 21 publications

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“…2. The Jw,p (l/m 2 .h, abbreviated as LMH) is calculated from changing the volume V over test duration ∆t [3,33].…”

Section: -Experimental Workmentioning

confidence: 99%

“…The scarcity of freshwater is a global issue that worsens as population growth and consumption increase [1][2][3][4]. Only 2.5% of the global water supply can be classified as freshwater, while the remaining portion is categorized as saline [5,6].…”

Section: -Introductionmentioning

confidence: 99%

“…1 [19,32]. OARO is a pressure-driven membrane-based system combining RO and FO principles [6,3]. Since the osmotic pressure difference across the membrane is small or negligible, water can pass through the membrane by applying pressure regardless of the feed concentration, according to Eq.…”

Section: -Introductionmentioning

confidence: 99%

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Utilizing Hybrid RO-OARO Systems as New Methods for Desalination Process

Hassan,

Al-Alawy,

Al-shaeli

2024

IJCPE

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The scarcity of fresh water and its essential role in sustaining life on Earth have motivated researchers to seek new, low-cost, scalable technologies for water desalination. Therefore, the osmotically assisted reverse osmosis (OARO) membrane process presents an innovative approach to achieve moderate water recoveries from high salinity water without undergoing a phase change. This work aims to investigate the performance of hybrid RO-OARO systems with various designs and operational parameters on recovery and R%. The hybrid systems were evaluated for 60 minutes at feed concentrations of 3.98-5.54 g/l, applied pressures ranging from 3 to 7 bars, and different membrane types. The results showed that the flux of the hybrid system increased by increasing the pressure and decreased by increasing the feed concentration. The highest recovery value was obtained for the RO-OARO system at an RO pressure of 7 bar and an OARO unit at 3 bar for a 3.98 g/l feed concentration. In contrast, when the reverse osmosis pressure was fixed at 5 bar, and the pressure of the OARO unit increased by 2 bar, the recovery value exceeded by about 6%. Furthermore, the FilmTech membrane showed the highest recovery at 31.7%, while the highest R% was 94.55% for the AquaTec membrane. The RO-OARO-OARO system contributed to increasing both the recovery and rejection values by 11.4 and 2.1%, respectively, compared with the RO-OARO system. The experiments in this study revealed a slight increase in the feed concentration of the reverse osmosis unit, indicating the efficiency of the hybrid systems compared to traditional RO systems.

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“…2. The Jw,p (l/m 2 .h, abbreviated as LMH) is calculated from changing the volume V over test duration ∆t [3,33].…”

Section: -Experimental Workmentioning

confidence: 99%

Section: -Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Utilizing Hybrid RO-OARO Systems as New Methods for Desalination Process

Hassan,

Al-Alawy,

Al-shaeli

2024

IJCPE

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“…In general, researches focused on materials that are strong and porous with high chemical stability that allow to implementation of anode and cathode electrodes close together and prevent the diffusion of oxygen and substrate [33,34]. Qin et al (2017) observed that the internal resistance could be reduced by using forward osmosis membrane (FO) and enhanced water recovery in the osmotic microbial fuel cell (OMFCs) by the permeating water under the osmotic pressure gradient from high water potential to low water potential [35,36,37,38] with less permeability to oxygen and substrate [36,39] leading to protons and cations reaches the cathode electrode that electro-osmotically dragged by water molecules in a faster way [40].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Influence of Membrane Type on the Performance of Microbial Fuel Cell

Waheeb

Al-Alalawy

2021

Egypt. J. Chem.

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In this work, microbial fuel cell (MFC) design of five chambers was used to investigate the effect of four types of membranes which are cation exchange membrane (CEM), Cellulose Triacetate membrane (CTA), thin film composite membrane (TFC), and proton exchange membrane (PEM). To study the influence of the membrane type on the cathode performance, the four cathode chambers were filled with 20 g/l NaCl catholyte and the sodium acetate of 1.5 g/l was supplied to the central chamber as anolyte. The results revealed that the membrane proton selectivity plays an important role in the cathodic reduction reaction for electrical generation and water production. It was observed that the PEM has a significant effect on the power generation with a maximum power density of 20.492 mW/m 2 with water production of 4.21 g/day. Whereas the competition of the other cations to the proton transfer was clearly observed by using the CTA membrane with power production of 12.646 mW/m 2 , and the abundance of the water production of 178.16 g/day was attributed to the water transport across the CTA membrane. For studying the influence of the membrane type on the anode performance, the sodium acetate of 1.5 g/l was supplied to the four chambers as an anolyte at a flow rate of 0.0272 cm 3 /sec and the central chamber were filled with 20 g/l NaCl catholyte. The salt reverse transfer from the cathode chamber to the anode chamber across the CTA membrane contributed to increasing the anolyte electrical conductivity and consequently increased the power production to 12.555 mW/m 2 . Meanwhile, the effect of the proton selectivity and the electrical resistance of the other membrane were observed in the other chambers. Thus, the usage of CEM, TFC, and PEM produced electrical power of 6.751, 3.004, and 9.712 mW/m 2 respectively.

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