Preprint Article Version 1 This version is not peer-reviewed

An Efficient Producing-Bioemulsifier by Bacillus Subtilis UCP 0146 Isolated from Mangrove Sediments

Version 1 : Received: 1 September 2018 / Approved: 7 September 2018 / Online: 7 September 2018 (10:55:52 CEST)

A peer-reviewed article of this Preprint also exists.

Maia, P.C.V.S.; Santos, V.P.; Ferreira, A.S.; Luna, M.A.C.; Silva, T.A.L.; Andrade, R.F.S.; Campos-Takaki, G.M. An Efficient Bioemulsifier-Producing Bacillus subtilis UCP 0146 Isolated from Mangrove Sediments. Colloids Interfaces 2018, 2, 58. Maia, P.C.V.S.; Santos, V.P.; Ferreira, A.S.; Luna, M.A.C.; Silva, T.A.L.; Andrade, R.F.S.; Campos-Takaki, G.M. An Efficient Bioemulsifier-Producing Bacillus subtilis UCP 0146 Isolated from Mangrove Sediments. Colloids Interfaces 2018, 2, 58.

Journal reference: Colloids Interfaces 2018, 2, 58
DOI: 10.3390/colloids2040058

Abstract

In this work was investigated the potential of Bacillus subtilis UCP 0146 in the bioconversion of the medium containing 100% of cassava flour wastewater to obtain bioemulsifier. The evaluation of the production was carried out by the emulsification index (IE24) and surface tension (TS). The ionic charge, stability (temperature, salinity and pH measured by IE24 and viscosity), ability to remove and disperse oil and textile dye were investigated. B.subtilis produced an anionic bioemulsifier in the medium containing 100% of cassava wastewater in condition 4 of the factorial design (9% of the inoculum, at 35 °C and agitation of 100 rpm) with surface tension of 39mN/m, IE24 of 95.2 % and yield 2.69 g.L-1. Stability at different pH (2-8), temperatures (0-120ºC) and NaCl, dispersed (55.83 cm2-ODA) and reduced the viscosity of the burned engine oil (90.5 cP) , removed 94.4% petroleum and demonstrated efficiency in methylene blue removal (62.2%). The bioemulsifier and its synthesis from bacteria and also emphases on the role of surfactants in oil remediation.

Subject Areas

Bacillus subtilis; bioemulsifier; cassava wastewater; removal pollutant; methylene blue dye.

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