Valorization of waste glycerol into value-added dihydroxyacetone via microbial fermentation: feasibility study

Author:

Tiong Angnes Ngieng TzeORCID,Cheonh Priscilla Yi Yun,Chua Wi Fern,Kolloju Nikhita,Ting Jia Min,Thian Jia Jia

Abstract

AbstractThe waste glycerol generated during biodiesel production can be converted into a value-added product like dihydroxyacetone (DHA). DHA is widely applied in the cosmetic industry as a color additive in sunless tanning products. There is a market demand for DHA as the revenue for sunless tanning products is growing. Study on reviewing the viability of an industry-scaled DHA production plant is scarce. Therefore, it is the aim of this study to examine and evaluate the feasibility of the DHA production plant in terms of technical, economical, and safety aspects. In this present study, the DHA is synthesized from glycerol via microbial fermentation using Gluconobacter oxydans. The production process is designed and simulated using Aspen Plus software. Preliminary process hazards and safety reviews are conducted using HAZOP and process material risk assessment. Techno-economic and sensitivity analyses are also performed. The simulation results indicate that with 6266 tons of crude glycerol, 3871 tons of DHA can be generated annually. The DHA production from crude glycerol is found to be technically and economically viable. The DHA plant is able to retain profitability at ± 25% fluctuation of the DHA selling price, with a payback period of less than 5 years. The findings from this work provide insight into the feasibility of the valorization of waste crude glycerol from biodiesel synthesis into DHA. Graphical abstract

Funder

Curtin University

Publisher

Springer Science and Business Media LLC

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