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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472
EISSN: 1735-2630
Vol. 12, No. 10, 2015, pp. 3341-3350
Bioline Code: st15313
Full paper language: English
Document type: Research Article
Document available free of charge

International Journal of Environment Science and Technology, Vol. 12, No. 10, 2015, pp. 3341-3350

 en Bioremoval of lead and iron from sewage water by mangrove-derived Hypocrea lixii check for this species in other resources
Saravanakumar, K. & Kathiresan, K.

Abstract

This work focused on the bioremoval of heavy metals by mangrove-derived Trichoderma check for this species in other resources biomass in the artificial sewage water. Of the 12 isolates tested, Hypocrea lixii check for this species in other resources TSK8 (JQ809340) was found to be a potent strain in removal of lead and iron. The bioremoval was enhanced through adsorption kinetics and process optimization using statistical model of the response surface methodology. The magnitude of Langmuir constant was 0.64 L mg-1 and 0.42 L mg-1 for lead and iron, respectively. Adsorption capacity was determined as 49.2 mg g-1 and 51.3 mg g-1 for lead and iron, respectively. The optimized conditions for maximum removal of lead and iron were standardized. The biosorption of metals was also confirmed by scanning electron microscopic and X-ray energy-dispersive spectrometer analyses. The results revealed that dried biomass of the H. lixii TSK8 was a potent biosorbent for efficient bioremoval of lead and iron.

Keywords
Mangroves; Trichoderma; Hypocrea lixii; Bioadsorption; Response surface methodology

 
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