Degradation Characteristics of Oil Degrading Candida tropicalis

Abstract

Objective: The aim of study is to research the degradation characteristics of oil degrading Candida tropicalis (G-94). Methods: Effects of temperature, pH, oil concentration, salt concentration, inoculation amount, N and P source on the oil removal rate of G-94 were studied by single factor test. Meanwhile, the effects of temperature, pH, oil concentration and salt concentration on the oil removal rate of G-94 were optimized by orthogonal design. Result: The orthogonal design showed that the oil removal rate of G-94 could reach 25.83%, 28.56% and 30.90% at 10 d, 20 d and 40 d under the optimal conditions which was 25˚C, initial pH 8.0, oil concentration 1.0%, salt concentration 0.4%, inoculum amount 4%, the optimal N and P were (NH 4 ) 2 SO 4 and K 2 HPO 4 . Conclusion: This experiment studied the degradation characteristics of G-94, which paved the way for the remediation of petroleum contaminated soil.

Biodegradation of Benzene Gas by Candida Tropicalis in Batch Experiment

“…One of yeast strains that widely studied for their ability to degrade environmental contaminants is C. tropicalis. Several studied have been carried out to investigate the ability of C. tropicalis to biodegrade hydrocarbon compound such as toluene [4,5], phenol [6,7], polycyclic aromatic hydrocarbon (PAH) [8] and petroleum oil [9][10][11][12]. In this study, benzene has been chosen as the model of VOC to be treated with a biological method by using yeast strain C. tropicalis.…”