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Studying Different Operating Conditions on Reverse Osmosis Performance in the Treatment of Wastewater Containing Nickel (II) Ions. | LitMetric

AI Article Synopsis

  • - The study investigated how various factors like temperature, pressure, feed concentration, and flow rate affect the effectiveness of reverse osmosis in removing nickel ions from wastewater, using a specific membrane setup.
  • - Key findings revealed that increasing temperature and pressure significantly improved permeate flux and nickel removal rates, with the most notable effect being a 188% increase in flux when pressure rose from 10 to 40 bar.
  • - Mathematical models based on experimental data were developed for permeate flux and nickel removal efficiency, effectively aligning with the experimental results, indicating reliable predictive capabilities for the system studied.

Article Abstract

The reverse osmosis performance in removing nickel ions from artificial wastewater was experimentally and mathematically assessed. The impact of temperature, pressure, feed concentration, and feed flow rate on the permeate flux and Ni (II) rejection % were studied. Experiments were conducted using a SEPA CF042 Membrane Test Skid-TFC BW30XFR with applied pressures of 10, 20, 30, and 40 bar and feed concentrations of 25, 50, 100, and 150 ppm with varying operating temperatures of 25, 35, and 45 °C, while the feed flow rate was changed between 2, 3.2, and 4.4 L/min. The permeate flux and the Ni (II) removal % were directly proportional to the feed temperature and operating pressure, but inversely proportional to the feed concentration, where the permeate flux increased by 49% when the temperature was raised from 25 to 45 °C, while the Ni (II) removal % slightly increased by 4%. In addition, the permeate flux increased by 188% and the Ni (II) removal % increased to 95.19% when the pressure was raised from 10 to 40 bar. The feed flow rate, on the other hand, had a negligible influence on the permeate flux and Ni (II) removal %. The temperature correction factor (TCF) was determined to be directly proportional to the feed temperature, but inversely proportional to the operating pressure; nevertheless, the TCF was unaffected either by the feed flow rate or the feed concentration. Based on the experimental data, mathematical models were generated for both the permeate flux and nickel removal %. The results showed that both models matched the experimental data well.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9695154PMC
http://dx.doi.org/10.3390/membranes12111163DOI Listing

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