Eco-friendly treatment of synthetic dyes contaminated water by biosorption: use of Bacillus mojavensis BI2 derived lipopeptide and date palm waste flour as biosorbents

Abstract

In the former section of the present paper, the prospective application of B. mojavensis BI2 derived lipopeptides for dyes biodecolorization was demonstrated. The lipopeptide was mainly composed of linear and cyclic Fengycin and Surfactin isoforms. When using 100 mg/L, we are able to remove about 98% of 100 and 200 mg/L Malachite Green (MG). For the Crystal Violet (CV), the % of biodecolorization does not exceed 85% in the presence of 100 and 400 mg/L BI2 lipopeptide. In the second part of the paper, we proved the efficiency of dyes biosorption by palm waste floor, optimized by a Taguichi design. The bio-treatment efficiency was evaluated by color removal and the enhancement of germination index. Optimum treatments were obtained with 10 g/L and 6 g/L palm waste for 200 mg/L MG and CV respectively during 1 hour. Nevertheless, BI2 lipopeptide addition has no significant effect on color biosorption by date palm waste flour.

GRAPHICAL ABSTRACT

Keywords:

• Dyes biosorption
• biosurfactant
• biodecolorization
• palm waste
• Taguichi design

Consent for publication

All authors read the final manuscript and approved its submission to Journal of Dispersion Science and Technology.

Availability of data and materials

The data sets supporting the conclusions of this article are included in the article.

Authors’ contributions

All authors directly participated in the planning, execution, or analysis of this study. All authors read and approved the final manuscript.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work has been supported by grants from the Tunisian Ministry of Higher Education, Scientific Research and Technology. It is a part of a research project on Biosurfactant Production, Characterization and Application.