Surfactant-promoted enhancement in bioremediation of hexavalent chromium to trivalent chromium by naturally occurring wall algae

Surfactant-promoted enhancement in bioremediation of hexavalent chromium to trivalent chromium by... The discharge of hexavalent chromium [Cr(VI)] has resulted in significant pollution because of the presence of Cr(VI) oxyanions. They are highly water-soluble, cell-permeable and transportable in water sources. To eliminate the toxic effects, various chemical and biological methods have been developed. Bioremediation can be used as an effective tool over conventional chemical processes for the removal of toxic hexavalent chromium species. Blue-green algae-mediated bioremediation is gaining more interest due to its availability and efficiency. In this method, [Cr(VI)] is reduced to relatively less toxic [Cr(III)] as a consequence of oxidation of organic components present in the water extract of wall algae. The percent removal of Cr(VI) is increased by the addition of the anionic surfactant sodium dodecyl sulfate (SDS) and the neutral surfactant Triton-X-100 (TX-100). It was found that the percent removal efficiency of unanalyzed, TX-100 and SDS catalyzed (3 × 10−2 M) systems are approximately 47, 54 and 80 %, respectively, in 8 days. The efficiency of these systems increases with the increase in the equivalent amount of added surfactant (3 × 10−1 M). The reaction proceeds to almost completion (96 %) with the increase in the added surfactant (3 × 10−1 M). The optimum pH of the reaction was found to be 2 and the temperature 40 °C. The amount of Cr(III) formed was measured by the fluorescence technique with a known dye selective to Cr(III), and the presence of soluble Cr(VI) in the mixture was estimated by a diphenylcarbazide kit. This method was further used to determine the removal efficiency of the SDS-catalyzed system in collected [Cr(VI)]-contaminated water sources, i.e. a pond beside the Sukinda valley in Cuttack, India, and pond water from the local area, sea water from Cuttack and Digha, W.B., India, as well as from the tanning industry. All the observations were recorded using UV–Vis, fluorescence and FTIR spectrophotometry. Research on Chemical Intermediates Springer Journals

Surfactant-promoted enhancement in bioremediation of hexavalent chromium to trivalent chromium by naturally occurring wall algae

Loading next page...
Springer Netherlands
Copyright © 2016 by Springer Science+Business Media Dordrecht
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
Publisher site
See Article on Publisher Site


You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial