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  • This paper deals with the application of membrane separation processes for chromium wastewater treatment. It describes the rejection of trivalent chromium using a commercial membrane for reverse osmosis (RO98pHt). Separation experiments were performed with model solutions of chromium. The effects of feed pH, chromium concentration and temperature were investigated. The results showed that pH of the feed solution has influence on the stability of dissolved particles with negative impact on membrane fouling. Prepared feed solutions were stable till pH=6, over this value floccules sedimentation occurred. RO98pHt rejected almost 100% Cr(III) at various pH values using 100 mg.L-1 concentration level, operating pressure 1.5 MPa and at temperature 20°C. Similar results showed separation experiments using various Cr(III) concentration from 10 till 560 mg.L-1 and pH=5±0.2. Increase of operating temperature causes higher permeate flux and has no significant influence on the rejection level of Cr(III). Obtained results show application possibility of reverse osmosis for chromium removal in wastewaters.
  • This paper deals with the application of membrane separation processes for chromium wastewater treatment. It describes the rejection of trivalent chromium using a commercial membrane for reverse osmosis (RO98pHt). Separation experiments were performed with model solutions of chromium. The effects of feed pH, chromium concentration and temperature were investigated. The results showed that pH of the feed solution has influence on the stability of dissolved particles with negative impact on membrane fouling. Prepared feed solutions were stable till pH=6, over this value floccules sedimentation occurred. RO98pHt rejected almost 100% Cr(III) at various pH values using 100 mg.L-1 concentration level, operating pressure 1.5 MPa and at temperature 20°C. Similar results showed separation experiments using various Cr(III) concentration from 10 till 560 mg.L-1 and pH=5±0.2. Increase of operating temperature causes higher permeate flux and has no significant influence on the rejection level of Cr(III). Obtained results show application possibility of reverse osmosis for chromium removal in wastewaters. (en)
Title
  • Treatment of chromium wastewater using membrane separation processes
  • Treatment of chromium wastewater using membrane separation processes (en)
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  • Treatment of chromium wastewater using membrane separation processes
  • Treatment of chromium wastewater using membrane separation processes (en)
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  • RIV/70883521:28140/14:43871528!RIV15-MSM-28140___
http://linked.open...avai/riv/aktivita
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  • 51146
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  • RIV/70883521:28140/14:43871528
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  • leather industry; wastewater treatment; reverse osmosis; membrane separation; chromium (en)
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  • [81EDA31A5EC6]
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  • Santorini
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  • Latest Trends on Systems. Volume II
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  • Kolomazník, Karel
  • Kocurek, Pavel
  • Bařinová, Michaela
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http://linked.open.../riv/zahajeniAkce
issn
  • 1790-5117
number of pages
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  • Europment
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  • 978-1-61804-244-6
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  • 28140
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