Yuzhen Shi

Yuzhen

PhD student in Chemical and Biological Engineering

Email: cpp10ys@shef.ac.uk

Tel: +44 (0) 114 222 7500

Department of Chemical & Process Engineering
University of Sheffield
Sir Robert Hadfield Building
Mappin Street
Sheffield
S1 3JD

Links: University Profile

Research

Biography

The waste gas from various biological processes such as pharmaceutical production, bioethanol production and brewery industry contain a large amount of carbon dioxide and acetaldehyde as well as other volatile organic compound (VOC). Carbon dioxide is the largest contributor to greenhouse effect, and acetaldehyde is considered as a harmful pollutant both to water body and to atmosphere. However, for algae, carbon dioxide is it’s main carbon source for photosynthesis and acetaldehyde, for some heterotrophci algal strains, is supplementary organic carbon source. Therefore, algae cultivation could be a perfect solution for such flue gas treatment. It can remove acetaldehyde, uptake carbon dioxide and produce biomass.

This project aims to screen and acclimate different algal strains in order to determine an optimal strain for the acetaldehyde removal and flue gas treatment. It should have high acetaldehyde tolerance, ability to remove acetaldehyde and commercial value of it’s biomass. An innovative micro-bubble airlift loop bioreactor has been introduced into the microalgae cultivation and screening. By applying a novel, energy saving and excellently performed micro-bubble generating system, the circulation, mixing and mass transfer of the airlift bioreactor can be considerably enhanced, which is believed can greatly benefit the growth of microalgae.

I was awared my Bachelor degree in Chemical Engineering and a MSc degree in Environmental and Energy Engineering. Currently I am a third year PhD student who is working on algae acclimation for acetaldehyde removal and fermentation exhaust gas treatment. I am based in Chemical and Biological Engineering. 

Supervisors

Professor Will Zimmerman

Dr Jim Gilmour