Contact Dr Alison Parker
- Tel: +44 (0) 1234 758120
- Email: a.parker@cranfield.ac.uk
- Twitter: @AlisonP_WASH
- Blog: http://www.nanomembranetoilet.org/
- ORCID
Areas of expertise
- Carbon, Climate and Risk
- Environment and Health
- Water Science and Engineering
Background
Dr Parker completed a four year Masters degree at the University of Oxford in Earth Sciences.This was followed by a PhD at the University of Leeds studying the hydrogeology of the chalk aquifer of East Yorkshire. Dr Parker started as a Research Fellow at Cranfield University in January 2009 and was progressed to Senior Lecturer by October 2019.
Research opportunities
Managed aquifer recharge in drylands
Many rural communities in semi-arid areas experience highly seasonal rainfall which is mostly lost as run-off. As the dry season progresses their water sources dry up and they have to travel further to collect water which often has poor water quality. By retaining water and encouraging aquifer recharge, water sources can remain sustainable throughout the dry season. Structures are being built by both local and international non-governmental organisations (NGOs). The use and variety of these structures is growing as organisations seek to respond to increasingly irregular rainfall, and regulators are becoming increasingly worried about the impact on water quality. For example in some states in India it is a requirement to install managed aquifer recharge structures on any new building, but these are being implemented without any proper understanding of their impacts on water resources and groundwater contamination. I research different structures all over the world, I can share knowledge between different stakeholders globally.
The circular economy for sanitation
Providing universal access to sanitation is still a major challenge. The circular economy model uses the nutrient or energy value of waste and is being implemented as a way of shifting the paradigm of waste management to resource production. The circular economy focuses on the whole sanitation chain which includes the provision of toilets, the collection of waste, treatment and transformation into sanitation-derived products. As well as potentially reducing the cost of toilet provision, it also has the potential to enable positive environmental and health impacts, unlike other systems where waste may be discharged untreated into the environment, as wastewater treatment plants are overloaded or faecal sludge is dumped directly into watercourses The implementation of a system level transformation is not simple, considering operator capacity, lack of funding, slowly growing acceptance by local communities, and a policy landscape which can be inconsistent in its support for the circular economy. There is a growing cohort of NGOs and entrepreneurs who are keen to implement circular economy for sanitation models, and I am keen to support their operations through research.
Current activities
#NAME?
Clients
- Engineering and Physical Sciences Research Council
- Economic and Social Research Council
- Natural Environment Research Council
- Royal Society
- Oxfam International
- Excellent Development Ltd
- People in Need
- Bill & Melinda Gates Foundation
Publications
Articles In Journals
- Lewis AR, Bell AR, Casas A, Kupiec-Teahan B, Sanchez JM, .... (2024). Comparative sanitation data from high-frequency phone surveys across 3 countries. Data in Brief, 55
- Yadav B, Parker A, Sharma A, Sharma R, Krishan G, .... (2023). Estimation of groundwater recharge in semiarid regions under variable land use and rainfall conditions: A case study of Rajasthan, India. PLOS Water, 2(3)
- Wagaba B, Sayan C, Haemmerli H, Gill J & Parker A. (2023). Understanding small NGOs' access to and use of geological data and expertise in delivering SDG 6 in eastern Africa. Journal of Water, Sanitation and Hygiene for Development, 13(5)
- Thakur B, Loganathan VA, Sharma A, Sharma RK & Parker A. (2023). Release of geogenic fluoride from contaminated soils of Rajasthan, India: Experiments and geochemical modeling. Water Security, 19(August)
- Ritchie H, Holman I, Parker A & Chan J. (2023). Sand dam contributions to year-round water security monitored through telemetered handpump data. Environmental Monitoring and Assessment, 195(11)
- Hutchings P, Cooper S, Butterworth J, Joseph S, Kebede A, .... (2022). Water and Emotion: Testing a New Approach for Monitoring Water Security Among Afar Pastoralists in Ethiopia. Frontiers in Climate, 3
- Parker AH, Nyangoka J, Rodrigues I, Yadav B, Le Corre KS, .... (2022). The multiple uses of water derived from managed aquifer recharge systems in Kenya and India. Journal of Water, Sanitation and Hygiene for Development, 12(2)
- Mallory A, Mdee A, Agol D, Hyde‐Smith L, Kiogora D, .... (2022). The potential for scaling up container‐based sanitation in informal settlements in Kenya. Journal of International Development, 34(7)
- Ferguson C, Mallory A, Anciano F, Russell K, Valladares HDRL, .... (2022). A qualitative study on resource barriers facing scaled container-based sanitation service chains. Journal of Water, Sanitation and Hygiene for Development, 12(3)
- Mallory A, Parker A, Hutchings P & Sakrabani R. (2022). Why Agricultural Tools Work in Theory But Aren’t Adopted in Practice: A Grounded Theory Approach to ICT in Ghana and Kenya. Air, Soil and Water Research, 15
- Castelli G, Piemontese L, Quinn R, Aerts J, Elsner P, .... (2022). Sand dams for sustainable water management: Challenges and future opportunities. Science of The Total Environment, 838(September)
- Yadav B, Patidar N, Sharma A, Panigrahi N, Sharma RK, .... (2022). Assessment of traditional rainwater harvesting system in barren lands of a semi-arid region: A case study of Rajasthan (India). Journal of Hydrology: Regional Studies, 42(August)
- Hutchings P, Willcock S, Lynch K, Bundhoo D, Brewer T, .... (2022). Understanding rural–urban transitions in the Global South through peri-urban turbulence. Nature Sustainability, 5(11)
- Grisaffi C, Oluoch P, Hamuchenje EM, Phiri J, Salano G, .... (2022). Transforming citywide sanitation provision: Utility voices on pit emptying and transport services in Kenya and Zambia. Frontiers in Water, 4
- Parker A, Stigter TY & Olago D. (2022). Editorial: Water Harvesting Methods in Drylands to Increase Climate Resilience. Frontiers in Water, 4
- Davey CJ, Liu P, Kamranvand F, Williams L, Jiang Y, .... (2021). Membrane distillation for concentrated blackwater: Influence of configuration (air gap, direct contact, vacuum) on selectivity and water productivity. Separation and Purification Technology, 263(May)
- Ritchie H, Eisma JA & Parker A. (2021). Sand Dams as a Potential Solution to Rural Water Security in Drylands: Existing Research and Future Opportunities. Frontiers in Water, 3
- Budge S, Hutchings P, Parker A, Tyrrel S, Norton S, .... (2021). A randomised controlled feasibility trial of a BabyWASH household playspace: The CAMPI study. PLOS Neglected Tropical Diseases, 15(7)
- Ferguson C, Mallory A, Hutchings P, Remington C, Lloyd E, .... (2021). An evaluation of different provision strategies for scaled-up container-based sanitation. H2Open Journal, 4(1)
- Kamranvand F, Davey CJ, Williams L, Parker A, Jiang Y, .... (2021). Membrane distillation of concentrated blackwater: Effect of temperature, solids concentration and membrane pore size. Water Environment Research, 93(6)
- Hennigs J, Ravndal KT, Parker A, Collins M, Jiang Y, .... (2021). Faeces – Urine separation via settling and displacement: Prototype tests for a novel non-sewered sanitation system. Science of The Total Environment, 753
- Budge S, Parker A, Hutchings P, Garbutt C, Rosenbaum J, .... (2021). Multi-Sectoral Participatory Design of a BabyWASH Playspace for Rural Ethiopian Households. The American Journal of Tropical Medicine and Hygiene, 104(3)
- Willcock S, Parker A, Wilson C, Brewer T, Bundhoo D, .... (2021). Nature provides valuable sanitation services. One Earth, 4(2)
- Mallory A, Omoga L, Kiogora D, Riungu J, Kagendi D, .... (2021). Understanding the role of informal pit emptiers in sanitation in Nairobi through case studies in Mukuru and Kibera settlements. Journal of Water, Sanitation and Hygiene for Development, 11(1)
- Holm RH, Chunga BA, Mallory A, Hutchings P & Parker A. (2021). A Qualitative Study of NIMBYism for Waste in Smaller Urban Areas of a Low-Income Country, Mzuzu, Malawi. Environmental Health Insights, 15
- Hasan H, Parker A & Pollard SJT. (2021). Whither regulation, risk and water safety plans? Case studies from Malaysia and from England and Wales. Science of The Total Environment, 755(Pt 1)
- Somorin T, Fidalgo B, Hassan S, Sowale A, Kolios A, .... (2020). Non-isothermal drying kinetics of human feces. Drying Technology, 38(14)
- Budge S, Barnett M, Hutchings P, Parker A, Tyrrel S, .... (2020). Risk factors and transmission pathways associated with infant Campylobacter spp. prevalence and malnutrition: A formative study in rural Ethiopia. PLOS ONE, 15(5)
- Elledge M, Parker A, Toolaram A & Stoner B. (2020). A Gender Lens into Sanitation Technology Innovation. Journal of Management in Engineering, 36(4)
- Somorin T, Parker A, McAdam E, Williams L, Tyrrel S, .... (2020). Pyrolysis characteristics and kinetics of human faeces, simulant faeces and wood biomass by thermogravimetry–gas chromatography–mass spectrometry methods. Energy Reports, 6
- Hulme AM, Davey CJ, Parker A, Williams L, Tyrrel S, .... (2020). Managing power dissipation in closed-loop reverse electrodialysis to maximise energy recovery during thermal-to-electric conversion. Desalination, 496
- Kamranvand F, Davey CJ, Williams L, Parker A, Jiang Y, .... (2020). Ultrafiltration pretreatment enhances membrane distillation flux, resilience and permeate quality during water recovery from concentrated blackwater (urine/faeces). Separation and Purification Technology, 253
- Yasmine Shafiq , Stuart Haigh , Rochelle Holm & Alison Parker . (2020). Re-evaluating the strength of pit-latrine faecal sludge from dynamic cone penetrometer test data. Water SA, 46(4 October)
- Mallory A, Holm R & Parker A. (2020). A Review of the Financial Value of Faecal Sludge Reuse in Low-Income Countries. Sustainability, 12(20)
- Mallory A, Akrofi D, Dizon J, Mohanty S, Parker A, .... (2020). Evaluating the circular economy for sanitation: Findings from a multi-case approach. Science of The Total Environment, 744
- Clemenz N, Boakye R & Parker A. (2020). Rapid Climate Adaption Assessment (RCAA) of water supply and sanitation services in two coastal urban poor communities in Accra, Ghana. Journal of Water and Climate Change, 11(4)
- Hennigs J, Parker A, Collins M, Jiang Y, Kolios A, .... (2019). Planning and communicating prototype tests for the Nano Membrane Toilet: A critical review and proposed strategy. Gates Open Research, 3
- Hennigs J, Parker A, Collins M, Jiang Y, Kolios A, .... (2019). Planning and communicating prototype tests for the Nano Membrane Toilet: A critical review and proposed visual tool. Gates Open Research, 3
- Mercer E, Davey CJ, Azzini D, Eusebi AL, Tierney R, .... (2019). Hybrid membrane distillation reverse electrodialysis configuration for water and energy recovery from human urine: An opportunity for off-grid decentralised sanitation. Journal of Membrane Science, 584
- Budge S, Hutchings P, Parker A, Tyrrel S, Tulu T, .... (2019). Do domestic animals contribute to bacterial contamination of infant transmission pathways? Formative evidence from Ethiopia. Journal of Water and Health, 17(5)
- Budge S, Parker AH, Hutchings PT & Garbutt C. (2019). Environmental enteric dysfunction and child stunting. Nutrition Reviews, 77(4)
- Hennigs J, Ravndal KT, Blose T, Toolaram A, Sindall RC, .... (2019). Field testing of a prototype mechanical dry toilet flush. Science of The Total Environment, 668
- Fidalgo B, Chilmeran M, Somorin T, Sowale A, Kolios A, .... (2019). Non-isothermal thermogravimetric kinetic analysis of the thermochemical conversion of human faeces. Renewable Energy, 132
- Cooper S, Hutchings P, Butterworth J, Joseph S, Kebede A, .... (2019). Environmental associated emotional distress and the dangers of climate change for pastoralist mental health. Global Environmental Change, 59
- Whitley L, Hutchings P, Cooper S, Parker A, Kebede A, .... (2019). A framework for targeting water, sanitation and hygiene interventions in pastoralist populations in the Afar region of Ethiopia. International Journal of Hygiene and Environmental Health, 222(8)
- Quinn R, Rushton K & Parker A. (2019). An examination of the hydrological system of a sand dam during the dry season leading to water balances. Journal of Hydrology X, 4
- Moya B, Parker A & Sakrabani R. (2019). Challenges to the use of fertilisers derived from human excreta: The case of vegetable exports from Kenya to Europe and influence of certification systems. Food Policy, 85
- Mercer E, Davey CJ, Campo P, Fowler D, Williams L, .... (2019). Quantification of liquid phase faecal odourants to evaluate membrane technology for wastewater reuse from decentralised sanitation facilities. Environmental Science: Water Research & Technology, 5(1)
- Parker AH, West LJ & Odling NE. (2019). Well flow and dilution measurements for characterization of vertical hydraulic conductivity structure of a carbonate aquifer. Quarterly Journal of Engineering Geology and Hydrogeology, 52(1)
- Moya B, Parker A, Sakrabani R & Mesa B. (2019). Evaluating the Efficacy of Fertilisers Derived from Human Excreta in Agriculture and Their Perception in Antananarivo, Madagascar. Waste and Biomass Valorization, 10(4)
- Moya B, Sakrabani R & Parker A. (2019). Realizing the Circular Economy for Sanitation: Assessing Enabling Conditions and Barriers to the Commercialization of Human Excreta Derived Fertilizer in Haiti and Kenya. Sustainability, 11(11)
- Anastasopoulou A, Kolios A, Somorin T, Sowale A, Jiang Y, .... (2018). Conceptual environmental impact assessment of a novel self-sustained sanitation system incorporating a quantitative microbial risk assessment approach. Science of The Total Environment, 639
- Kolios A, Jiang Y, Somorin T, Sowale A, Anastasopoulou A, .... (2018). Probabilistic performance assessment of complex energy process systems – The case of a self-sustained sanitation system. Energy Conversion and Management, 163
- Sowale A, Kolios AJ, Fidalgo B, Somorin T, Parker A, .... (2018). Thermodynamic analysis of a gamma type Stirling engine in an energy recovery system. Energy Conversion and Management, 165
- Kamranvand F, Davey CJ, Sakar H, Autin O, Mercer E, .... (2018). Impact of fouling, cleaning and faecal contamination on the separation of water from urine using thermally driven membrane separation. Separation Science and Technology, 53(9)
- Elledge M, Muralidharan A, Parker A, Ravndal K, Siddiqui M, .... (2018). Menstrual Hygiene Management and Waste Disposal in Low and Middle Income Countries—A Review of the Literature. International Journal of Environmental Research and Public Health, 15(11)
- Quinn R, Parker A & Rushton K. (2018). Evaporation from bare soil: Lysimeter experiments in sand dams interpreted using conceptual and numerical models. Journal of Hydrology, 564
- Quinn R, Avis O, Decker M, Parker A & Cairncross S. (2018). An Assessment of the Microbiological Water Quality of Sand Dams in Southeastern Kenya. Water, 10(6)
- Jurado N, Somorin T, Kolios AJ, Wagland S, Patchigolla K, .... (2018). Design and commissioning of a multi-mode prototype for thermochemical conversion of human faeces. Energy Conversion and Management, 163
- Seal D, Bown RT & Parker AH. (2018). Penetrometer tests on 109 pit latrines in Kibera, Nairobi, Kenya. Water SA, 44(3 July)
- Wang CY, Mercer E, Kamranvand F, Williams L, Kolios A, .... (2017). Tube-side mass transfer for hollow fibre membrane contactors operated in the low Graetz range. Journal of Membrane Science, 523
- Somorin TO, Kolios AJ, Parker A, McAdam E, Williams L, .... (2017). Faecal-wood biomass co-combustion and ash composition analysis. Fuel, 203
- Taylor S, Asimah SA, Buamah R, Nyarko K, Sekuma SP, .... (2017). Towards sustainable water, sanitation and hygiene technology use in sub-Saharan Africa: the Learning Alliance approach. Water Policy, 19(1)
- Omar YY, Parker A, Smith JA & Pollard SJT. (2017). Risk management for drinking water safety in low and middle income countries - cultural influences on water safety plan (WSP) implementation in urban water utilities. Science of The Total Environment, 576
- Nussbaumer D, Sutton I & Parker A. (2016). Groundwater Data Management by Water Service Providers in Peri-Urban Areas of Lusaka. Water, 8(4)
- Onabanjo T, Patchigolla K, Wagland ST, Fidalgo B, Kolios A, .... (2016). Energy recovery from human faeces via gasification: A thermodynamic equilibrium modelling approach. Energy Conversion and Management, 118
- Hanak DP, Kolios AJ, Onabanjo T, Wagland ST, Patchigolla K, .... (2016). Conceptual energy and water recovery system for self-sustained nano membrane toilet. Energy Conversion and Management, 126
- Mercer E, Cruddas P, Williams L, Kolios A, Parker A, .... (2016). Selection of screw characteristics and operational boundary conditions to facilitate post-flush urine and faeces separation within single household sanitation systems. Environmental Science: Water Research & Technology, 2(6)
- Onabanjo T, Kolios AJ, Patchigolla K, Wagland ST, Fidalgo B, .... (2016). An experimental investigation of the combustion performance of human faeces. Fuel, 184
- Hutchings P, Parker A & Jeffrey P. (2016). The political risks of technological determinism in rural water supply: A case study from Bihar, India. Journal of Rural Studies, 45
- Rose C, Parker A, Jefferson B & Cartmell E. (2015). The Characterization of Feces and Urine: A Review of the Literature to Inform Advanced Treatment Technology. Critical Reviews in Environmental Science and Technology, 45(17)
- Elster D, Holman IP & Parker A. (2015). Reply to Discussion on ‘An investigation of the basement complex aquifer system in Lofa county, Liberia, for the purpose of siting boreholes’ Quarterly Journal of Engineering Geology and Hydrogeology , Vol. 47, 2014, pp. 159–167. Quarterly Journal of Engineering Geology and Hydrogeology, 48(1)
- Elster D, Holman IP & Parker A. (2015). Reply to Discussion on 'An investigation of the basement complex aquifer system in Lofa county, Liberia, for the purpose of siting boreholes' Quarterly Journal of Engineering Geology and Hydrogeology, Vol. 47, 2014, pp. 159-167. QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY, 48(1)
- Jimenez-Redal R, Parker A & Jeffrey P. (2014). Factors influencing the uptake of household water connections in peri-urban Maputo, Mozambique. Utilities Policy, 28
- Moir RS, Parker AH & Bown RT. (2014). A simple inverse method for the interpretation of pumped flowing fluid electrical conductivity logs. Water Resources Research, 50(8)
- H. Parker A, A. Smith J, Verdemato T, Cooke J, Webster J, .... (2014). Menstrual management: a neglected aspect of hygiene interventions. Disaster Prevention and Management, 23(4)
- Parker A. (2014). Membrane technology plays key role in waterless hygienic toilet. Membrane Technology, 2014(12)
- Cruddas PH, Wang K, Best D, Jefferson B, Cartmell E, .... (2014). Diagnosis of an anaerobic pond treating temperate domestic wastewater: An alternative sludge strategy for small works. Ecological Engineering, 63
- Elster D, Holman IP, Parker A & Rudge L. (2014). An investigation of the basement complex aquifer system in Lofa county, Liberia, for the purpose of siting boreholes. Quarterly Journal of Engineering Geology and Hydrogeology, 47(2)
- Heile S, Rosenberger S, Parker A, Jefferson B & McAdam EJ. (2014). Establishing the suitability of symmetric ultrathin wall polydimethylsiloxane hollow-fibre membrane contactors for enhanced CO2 separation during biogas upgrading. Journal of Membrane Science, 452
- Chakava Y, Franceys R & Parker A. (2014). Private boreholes for Nairobi's urban poor: The stop-gap or the solution?. Habitat International, 43
- Alison Parker AP & Corinna Summerill CS. (2013). Water safety plan implementation in East Africa: motivations and barriers. Waterlines, 32(2)
- Parker A, Cruddas P, Rowe N, Carter R & Webster J. (2013). Tank costs for domestic rainwater harvesting in East Africa. Proceedings of the Institution of Civil Engineers - Water Management, 166(10)
- Heath TT, Parker AH & Weatherhead EK. (2012). Testing a rapid climate change adaptation assessment for water and sanitation providers in informal settlements in three cities in sub-Saharan Africa. Environment and Urbanization, 24(2)
- Parker AH, Youlten R, Dillon M, Nussbaumer T, Carter RC, .... (2010). An assessment of microbiological water quality of six water source categories in north-east Uganda. Journal of Water and Health, 8(3)
- Parker AH, West LJ, Odling NE & Bown RT. (2010). A Forward Modeling Approach for Interpreting Impeller Flow Logs. Groundwater, 48(1)
Conference Papers
- Anastasopoulou A, Kolios A, Somorin T, Sowale A, Jiang Y, .... (2018). Probabilistic life cycle assessment of the nano membrane toilet
- Adams RJ, Barrington D, Collins M, Hutchings P, Ihasz O, .... (2018). A scoping review of business model configurations for diffusing high-tech innovations at the bottom of the pyramid
- Kimera P, Smet J, Olschewskid A & Parker A. (2013). Context-specific validation and introduction of technologies for sustainable WASH services
- Parker AH, Kennedy-Walker R, Connelly S, Shin SG, Nguyen V, .... (2013). A novel, high-rate, anaerobic digester to treat high-solids waste ensuring reuse and good sanitation planning
- CARTER RC & PARKER A. (2009). Climate change, population trends and groundwater in Africa
Books
- Gupta PK, Yadav B, Le Corre K & Parker A. (2022). Chapter 17 Nitrate-N movement revealed by a controlled in situ solute injection experiment in the middle Gangetic plains of India In Advances in Remediation Techniques for Polluted Soils and Groundwater. Elsevier.
- Gupta PK, Yadav B, Le Corre K & Parker A. (2022). Nitrate-N movement revealed by a controlled in situ solute injection experiment in the middle Gangetic plains of India In Advances in Remediation Techniques for Polluted Soils and Groundwater. Elsevier.