Stephen J. Allen

Professor Emeritus at Queens University of Belfast. Stephen was until recently DuPont Professor of Process Engineering of the School of Chemistry and Chemical Engineering at Queen’s University of Belfast in Northern Ireland. He completed his B.Sc. and Ph.D. inchemical engineering in 1978 and 1981 respectively at Queen’sUniversity of Belfast. In 2008, Stephen received an Honorary Doctoratefrom the University of Chemical Technology and Metallurgy in Sofia,Bulgaria. He is also a Fellow and Honorary Registrar of the Institution of Chemical Engineers. Stephen’s areas of research are focused on adsorption and the environment with specific interests in the modification of adsorbents with different functional groups; natural adsorbents for the removalof pollutants from aqueous solution and from gaseous systems; adsorbent surface chemistry; thedevelopment of mass transfer and diffusion models to describe the adsorption processes; mechanismsand kinetics for the removals of BOD5, COD, Suspended Solids (SS),PO4-P, NH4-N, NO2-N and NO3-N in tidal flow reed beds; andrelationships between operating parameters, pollutant loadings andpollutant removal rates; anaerobic digestion and digestate treatment.

Professor Emeritus at Queens University of Belfast. Stephen was until recently DuPont Professor of Process Engineering of the School of Chemistry and Chemical Engineering at Queen’s University of Belfast in Northern Ireland. He completed his B.Sc. and Ph.D. inchemical engineering in 1978 and 1981 respectively at Queen’sUniversity of Belfast. In 2008, Stephen received an Honorary Doctoratefrom the University of Chemical Technology and Metallurgy in Sofia,Bulgaria. He is also a Fellow and Honorary Registrar of the Institution of Chemical Engineers. Stephen’s areas of research are focused on adsorption and the environment with specific interests in the modification of adsorbents with different functional groups; natural adsorbents for the removalof pollutants from aqueous solution and from gaseous systems; adsorbent surface chemistry; thedevelopment of mass transfer and diffusion models to describe the adsorption processes; mechanismsand kinetics for the removals of BOD5, COD, Suspended Solids (SS),PO4-P, NH4-N, NO2-N and NO3-N in tidal flow reed beds; andrelationships between operating parameters, pollutant loadings andpollutant removal rates; anaerobic digestion and digestate treatment.

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