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Insights into DBT biodegradation by a native Rhodococcus strain and its sulphur removal efficacy for two Indian coals and calcined pet coke

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dc.creator Panda, Sandeep
dc.creator Satapathy, Debasish
dc.creator Mishra, Barada Kanta
dc.creator Biswal, Surendra Kumar
dc.creator Mishra, Srabani
dc.creator Pradhan, Nilotpala
dc.date 2017-04-30T21:00:00Z
dc.date.accessioned 2020-10-26T13:13:46Z
dc.date.available 2020-10-26T13:13:46Z
dc.identifier 22dc7b7a-774f-432d-b7e5-ab96da6b9865
dc.identifier 10.1016/j.ibiod.2017.02.007
dc.identifier https://avesis.sdu.edu.tr/publication/details/22dc7b7a-774f-432d-b7e5-ab96da6b9865/oai
dc.identifier.uri http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/77372
dc.description A native isolate, 9C, identified as Rhodococcus ruber (Genbank Accession number - KY029073) was studied for dibenzothiophene degradation and subsequent bio-desulphurization of three different sulphur bearing materials (NE coal containing organic sulphur; lignite containing pyritic sulphur and a calcined petroleum-coke) of Indian origin. The isolate could degrade 0.25 mM DBT through the 4S pathway within 7 days. Preliminary studies for sulphur removal using the 9C isolate indicated NE coal to be more amenable (29% sulphur removal) followed by Lignite (15.87%) and CPC (14.83%) respectively. Characterization through XRD and FTIR along with the proximate and ultimate analysis of all the samples provided more insights into the changes in calorific values as well as the chemical constitution of the samples following microbial treatment. Owing to the amenability of NE coal, the effect of time, size fraction and pulp density were optimized. The best bio-desulphurization conditions for NE coal indicated 36% total sulphur removal (organic-53%, pyritic-18% and sulphate sulphur-14% respectively). Analytical characterization studies confirmed that the energy value of the NE coal was not affected due to bio-desulphurization, rather it contributed towards an increase in gross calorific value from 6698 cal/g to 6812 cal/g following microbial treatment. (C) 2017 Elsevier Ltd. All rights reserved.
dc.language eng
dc.rights info:eu-repo/semantics/closedAccess
dc.title Insights into DBT biodegradation by a native Rhodococcus strain and its sulphur removal efficacy for two Indian coals and calcined pet coke
dc.type info:eu-repo/semantics/article


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