alexa Biosorption of lead and zinc from solutions using Streptoverticillium cinnamoneum waste biomass.
Agri and Aquaculture

Agri and Aquaculture

Journal of Aquaculture Research & Development

Author(s): Puranik PR, Paknikar KM

Abstract Share this page

Abstract Mycelial wastes of microbial origin from fermentation industries have been recognized as potential biosorbents for decontamination of waste waters containing heavy metals. Dried, nonliving, granulated biomass of Streptoverticillium cinnamoneum was used for the recovery of lead and zinc from solutions. It was found that pretreatment of the biomass with boiling water for 15 min increased the biosorption of lead and zinc by 52 and 41\%, respectively. The optimum pH range for lead uptake was 3.5-4.5 while for zinc it was 5.0-6.0. The lead and zinc adsorption data when applied to Freundlich and Langmuir isotherm equations showed good correlation (r2 = 0.97) and hence equal conformity to both models. The Scatchard plots indicated clearly that more than one type of binding sites were involved in the adsorption of lead and zinc by the biomass. The maximum loading capacity of S. cinnamoneum biomass was found to be 57.7 mg/g for lead and 21.3 mg/g for zinc with boiling water pretreatment. The loaded metals could be desorbed effectively with dilute hydrochloric acid, nitric acid and 0.1 M EDTA. Treatment with 0.1 M sodium carbonate permitted reuse of the desorbed biomass although the metal loading capacity in the subsequent cycles decreased by 14-37\%. The metal biosorbent granules prepared are a value-added product that has the potential for removal/recovery of lead and zinc from dilute solutions on a commercial scale.
This article was published in J Biotechnol and referenced in Journal of Aquaculture Research & Development

Relevant Expert PPTs

Relevant Speaker PPTs

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version