Areas of expertise

Background

Professor Tyrrel holds a BSc (Hons) in Microbiology from the University of Leeds, an MPhil on the interaction of engineering and environmental factors on iron biofouling in boreholes from Cranfield University and a PhD on Land-based wastewater treatment, also from Cranfield University.

Professor Tyrrel is a Chartered Environmentalist (CEnv) and Chartered Water and Environmental Manager (C.WEM).

He is a Fellow of the Chartered Institution of Water and Environmental Management (FCIWEM) and Fellow of the Higher Education Academy (FHEA). He is also a Member of the Society of Applied Microbiologists and Member of the International Water Association.

Current activities

Professor Tyrrel's research focuses on the application of environmental microbiology to the management of organic solid wastes and wastewater. He has over 25 years of research experience in this field and has secured and managed research contracts funded by NERC, EPSRC, WRAP, Defra, DFID and several water and waste management companies. He has an established track record in research at the interface between waste management practice, environmental microbiology, and human health. Professor Tyrrel is a key contributor to an on-going programme of work related to the fate of pathogens in faecal waste residuals (such as sewage sludge and animal slurry) applied to agricultural land, funded by NERC, EU-FP7, United Utilities, and the Walsh Fellowship Programme. He has undertaken a series of projects for WRAP related to risk assessment of organics recycling in UK agriculture. Professor Tyrrel leads Cranfield's work on bioaerosol emission and dispersion from composting facilities and the implications of exposure to bioaerosols on human health. He has been recognised nationally and internationally for this work through his appointment to the BSI Air Quality Committee and as UK principal delegate to the CEN committee on bioaerosol measurement. Professor Tyrrel is a Chartered Environmentalist and a Fellow of the Chartered Institution of Water and Environmental Management.

Clients

  • NERC
  • EPSRC
  • Defra
  • DFID
  • EU-FP7
  • Environment Agency
  • WRAP
  • United Utilities
  • Scottish Water
  • Severn Trent
  • Sita UK
  • WRG
  • Shanks
  • Bill & Melinda Gates Foundation
  • ACO Ltd
  • Mott McDonald

Publications

Articles In Journals

Conference Papers

  • Nasar ZA & Tyrrel S (2015) Fluorescence based detection of bioaerosols to improve emissions characterization from environmental sources. In: Annual aerosol science conference 2015: aerosol generation and impact, Birmingham, 12 November 2015.
  • Longhurst P, Chambers B, Gale P, Litterick A, Taylor M, Tompkins D & Tyrrel S (2012)

    Risk assessment of the use of source-segregated anaerobic digestates in GB agriculture

    . In: 17th European Biosolids & Organic Resources Conference, 2012, Leeds, 19 November 2012.
  • Taylor M, Chambers B, Litterick A, Longhurst P, Tyrrel S, Gale P & Tompkins D (2012) Risk-based Guidance for BSI PAS110 Digestates in GB Agriculture. In: 17th European Biosolids & Organic Resources Conference, 2012, Leeds, 19 November 2012.
  • Wagland ST, Smith R, Godley AR, Tyrrel SF & Blakey N (2008) The development of a novel biodegradability test method based on the enzymatic hydrolysis of cellulose. In: Waste 2008 Conference: Waste and Resource Management - A Shared Responsibility, Stratford-upon-Avon, 16 September 2008.
  • Drew GH, Tamer Vestlund A, Jordinson G, Taha MPM, Smith R, Tyrrel SF, Longhurst PJ & Pollard S (2007) Progress towards a best practice method for modelling dispersion of bioaerosols from composting facilities. In: 11th International Waste Management and Landfill Symposium, 2007 (Sardinia 2007), S. Margherita di Pula, Cagliari, 1 October 2007.
  • Tamer Vestlund A, Drew GH, Jehlickova B, Stenbro-Olsen P, Sneath R, Tyrrel SF, Longhurst PJ, Jordinson G & Pollard S (2007) Bioaerosol and odour emissions: a comparison of three composting sites in Scotland. In: SARDINIA 2007. Eleventh International Waste Management and Landfill Symposium, S. Margherita di Pula (Cagliari), Italy, 1 October 2007.
  • Suguira A, Tyrrel SF, Seymour IL & Burgess PJ (2007)

    Water Renew systems : wastewater polishing using renewable energy crops

    . In: Guiding the Growth of Water Reuse. 6th IWA Specialist Conference on Wastewater Reclamation and Reuse for Sustainability, Flanders Congress Centre, Antwerp, belgium, 9 October 2007.
  • Ganidi N, Cartmell E & Tyrrel SF (2006) Anaerobic digester foaming. In: 11th European Biosolids and organic resources conference exhibition and workshop, Wakefield, UK, 13 November 2006.
  • Tyrrel SF, Seymour IL, Harris JA, Savage A & Smith R (2005) Biological treatment of compost liquor using waste-derived filter media. In: Sardinia 2005, Tenth International Waste Management and Landfill Symposium, Cagliari, 3 October 2005.
  • Pollard SJT, Sweet N, Owers A, Longhurst PJ, Tyrrel SF & Taha MPH (2003) A risk management framework for composting facilities in the United Kingdom. In: 8th European Biosolids & Organic Residuals Conference Workshop & Exhibition., Harrogate, UK, 1 July 2003.
  • Pollard S, Sweet N, Owers A, Longhurst PJ, Tyrrel SF & Taha M (2003) A Risk Management Framework for Composting Facilities in England and Wales. In: 8th European Biosolids Organic Residuals Conference and Exhibition, Wakefield, UK, 23 November 2003.
  • Ramos M, Quinton JN & Tyrrel SF (2002) Effects of cattle manure application on erosion rates and runoff. In: International Symposium on Sustainable Use & Management of Soils in Arid & Semiarid Regions, Murcia, Spain, 1 July 2002.
  • Tyrrel SF, Leeds-Harrison PB, Thorn P, Brierley EDR, Martin PJ, Seymour I & Stephens W (2001) Land-based landfill leachate treatment with systems vegetated with grass and trees. In: Abstract : Sardinia 2001, Eighth International Waste Management and Landfill Symposium, Sardinia, 1 July 2001.
  • Tyrrel SF, Leeds-Harrison PB, Thorn P, Brierley EDR, Martin PJ, Seymour IL & Stephens W (2001) Land-based landfill leachate treatment with systems vegetated with grass and trees.. In: Sardinia 2001, Eighth International Waste Management and Landfill Symposium (Eds T. H. Christensen, R. Cossu and R. Stegmann); Leachate and Landfill Gas., Sardinia, 1 January 2001.
  • Tyrrel SF, Leeds-Harrison PB, Harrison KS & Lowe M (1995) Landfill leachate treatment by irrigation onto vegetated treatment planes.. In: Agricultural and Biological Engineering: New Horizons, New Challenges: proceedings of International Conference at University of Newcastle-upon-Tyne, September., UK, 1 July 1995.
  • Tyrrel SF, Leeds-Harrison PB, Harrison KS & Lowe M (1994) Overland flow: a low technology approach to landfill leachate treatment. In: Engineering for Profit from Waste IV: proceedings of the Institution of Mechanical Engineers conference, C493/008, UK, 1 July 1994.
  • Leeds-Harrison PB, Tyrrel SF, Harrison KS & Lowe M (1993) Hydrological considerations in the design of overland flow systems for the treatment of landfill leachate. In: Environmental Engineering: proceedings of 1st International Conference on at De Montfort University, Leicester, September 1993, UK, 1 July 1993.