Decolorization kinetics and mass transfer mechanisms of Remazol Brilliant Blue R dye mediated by different fungi

Achmad Syafiuddin; Mohamad Ali Fulazzaky

doi:10.1016/j.btre.2020.e00573

Decolorization kinetics and mass transfer mechanisms of Remazol Brilliant Blue R dye mediated by different fungi

Biotechnol Rep (Amst). 2020 Dec 7:29:e00573. doi: 10.1016/j.btre.2020.e00573. eCollection 2021 Mar.

Authors

Achmad Syafiuddin¹, Mohamad Ali Fulazzaky^{2

3}

Affiliations

¹ Department of Public Health, Faculty of Health, Universitas Nahdlatul Ulama Surabaya, Jalan Raya Jemursari No.57, Jemur Wonosari, Surabaya 60237, Indonesia.
² Environmental Engineering and Management Research Group, Ton Duc Thang University, No.19, Nguyen Huu Tho Street, Tan Phong Ward, District 7, Ho Chi Minh City, Viet Nam.
³ Faculty of Environment and Labour Safety, Ton Duc Thang University, No.19, Nguyen Huu Tho Street, Tan Phong Ward, District 7, Ho Chi Minh City, Viet Nam.

Abstract

The release of synthetic dye into the environment causing abnormal growth of phytoplankton may lead to a decline in the photosynthetic performance of aquatic ecosystem. Scientific knowledge of Remazol Brilliant Blue R (RBBR) decolorization is essential for designing the engineered bioremediation systems of employing fungal mycelium. The biodegradation of RBBR dye mediated by an appropriate fungus was analyzed using the modified mass transfer factor models to get better understanding on the decolorization kinetics and mechanisms of external and internal mass transfer. The results showed that the limited capacities of the kinetic and isotherm models are still not able to comprehensively explain many important phenomena of RBBR decolorization mediated by the T. citrinoviride, T. koningiopsis and Pestalotiopsis sp. strains. The rate-limiting step of RBBR decolorization depends on the EMT resistance and the vegetative growth rates of T. citrinoviride, T. koningiopsis and Pestalotiopsis sp. strains can be described by second-order polynomial equation. The analysis of decolorization performance may provide a new insight on the role of fungus in the degradation of RBBR dye.

Keywords: Decolorization performance; External mass transfer; Internal mass transfer; Rainforest fungus; Synthetic dye.