Dr. Prasanthi Hagare is currently an Associate of the School of Civil and Environmental Engineering within the Faculty of Engineering and IT. She is an experienced engineering academic and has taught undergraduate and postgraduate engineering subjects, and supervised capstone and high degree research student projects.
Dr. Prasanthi Hagare was the Director of Postgraduate Engineering Programs of FEIT from 2010 till 2016. As part of this role, she was instrumental in reviewing the postgraduate programs and developing new programs to comply with the current Australian Qualifications Framework.
Dr. Prasanthi Hagare was the Director of Research Programs of FEIT from 2003 - 2008 where she developed programs to support HDR students in the Faculty. The first Research Showcase was organised very successfully under her leadership.
Water and wastewater treatment plant design; industrial/hazardous waste management; auditing landfill management
Water and Wastewater Treatment
Industrial Waste Treatment
Hazardous Waste Management
Gray, J, Williams, J, Hagare, P, Lopes, AM & Sankaran, S 2014, 'Lessons Learnt from Educating University Students through a Trans-Disciplinary Project for Sustainable Sanitation Using a Systems Approach and Problem-Based Learning', Systems, vol. 2, no. 3, pp. 243-272.View/Download from: UTS OPUS or Publisher's site
This article discusses how a Systems Thinking (ST) approach to student learning, employing Problem-Based Learning (PBL) interventions, at several different universities in Sydney, Australia was incorporated into a broader trans-disciplinary research project, the aim of which was to examine how urine diversion in an urban, institutional setting might form the basis of phosphorus collection-0phosphorus being a non-renewable resource used in agricultural fertilizers. The article explores how the ST approach employed by the researchers themselves was adapted to embrace student engagement opportunities and how it permitted opportunities for Problem-Based Learning interventions. Five academics forming part of the research team consider the effectiveness of ST-styled student engagement via Problem-Based Learning in three action research cycles used in the research project. In sharing their experiences they provide an honest, 'no-holds barred' review of what worked and what could be done more effectively with the benefits of hindsight.
Hagare, D, Hagare, P & Borg, M 2013, 'Economic evaluation of stormwater harvesting - A case study', Journal of the Indian Institute of Science, vol. 93, no. 2, pp. 285-294.View/Download from: UTS OPUS
Harvesting Stormwater is gaining importance as it is viewed as a potential alternative source for meeting non-potable water demand from consumers. However, there are not many economic studies carried out on the cost of supplying stormwater to consumers. The study reported in this paper makes an effort to estimate the cost of supplying the stormwater to consumers using a case study from Gosford Local Government Area (GLGA). A significant finding of this study is that the larger urbanised catchments are the most suitable locations for stormwater harvesting projects. The results obtained indicate that the cost of supplying treated stormwater for non-potable purposes varied between $3/kL and $5/kL, which is significantly higher than the cost of town water supply. In depth analysis revealed that, the major component of the capital cost is attributed to the cost of distribution system. Therefore, in areas that are already serviced by dual reticulation, it is possible that the cost of supplying stormwater would be equal to or lower than that of the existing town water supply. In addition, further refinement of cost functions can lead to more realistic $/kL values for the water harvested from stormwater.
Salvestrin, H & Hagare, P 2009, 'Removal of nitrates from groundwater in remote indigenous settings in arid Central Australia', Desalination and Water Treatment, vol. 11, no. 1-3, pp. 151-156.View/Download from: UTS OPUS or Publisher's site
Naturally occurring elevated levels of nitrates are detected in many of the groundwater bores in the arid zone of Central Australia. Such levels are associated with anemia in young babies, pregnant women and other vulnerable groups. Further, there is evidence that links long-term exposure to elevated levels of nitrates with gastric cancer. In many parts of arid Central Australia alternative sources of water are not available. The capacity to operate and maintain water treatment and supply systems in remote Indigenous communities varies due to access and levels of service provision, mobility of the residents and balance of skills within the communities. A need has thus been identifi ed for a low maintenance nitrate removal system. Conventional treatment processes do not remove nitrates. Alternatives, such as reverse osmosis, ion exchange or biological denitrifi cation are either complex, energy and water intensive, expensive, produce waste products requiring disposal or require continual maintenance and monitoring. Such preconditions are not able to be met in remote Indigenous communities. This paper reviews the problems of nitrates in the arid zone of Central Australia and explores existing technologies for their removal, relative to remote Indigenous settings. It identifi es a need for further investigations to tailor technology to the unique social, economic and cultural characteristics of these settings.
Xing, W, Ngo, H, Kim, S, Guo, W & Hagare, P 2008, 'Adsorption and bioadsorption of granular activated carbon (GAC) for dissolved organic carbon (DOC) removal in wastewater', Bioresource Technology, vol. 99, no. 18, pp. 8674-8678.View/Download from: UTS OPUS or Publisher's site
In this study, the performances of GAC adsorption and GAC bioadsorption in terms of dissolved organic carbon (DOC) removal were investigated with synthetic biologically treated sewage effluent (BTSE), synthetic primary treated sewage effluent (PTSE), real BTSE and real PTSE. The main aims of this study are to verify and compare the efficiency of DOC removal by GAC (adsorption) and acclimatized GAC (bioadsorption). The results indicated that the performance of bioadsorption was significantly better than that of adsorption in all cases, showing the practical use of biological granular activated carbon (BGAC) in filtration process. The most significance was observed at a real PTSE with a GAC dose of 5 g/L, having 54% and 96% of DOC removal by adsorption and bioadsorption, respectively. In addition, it was found that GAC adsorption equilibrium was successfully predicted by a hybrid Langmuir-Freundlich model whilst integrated linear driving force approximation (LDFA) + hybrid isotherm model could describe well the adsorption kinetics. Both adsorption isotherm and kinetic coefficients determined by these models will be useful to model the adsorption/bioadsorption process in DOC removal of BGAC filtration system. © 2008 Elsevier Ltd. All rights reserved.
Xing, W, Ngo, H, Kim, S, Guo, W & Hagare, P 2008, 'Physico - Chemical processes for landfill Leachate Treatment: Experiments and Mathematical Models', Separation Science and Technology, vol. 43, no. 2, pp. 347-361.View/Download from: UTS OPUS or Publisher's site
Dharmappa, H, Corderoy, RM & Hagare, P 2002, 'Teaching water treatment processes: Using multimedia and simulation', Water, vol. 29, no. 4, pp. 49-54.
Teaching and learning environments which use multimedia based resources have the potential to greatly improve the effectiveness and efficiency of learning by engaging students at a deeper level than may otherwise be possible. The presentation media and teaching methods work together to enrich the experience, providing the students with a greater opportunity to explore their own 'mental pictures', develop understanding and revise it as necessary. This is particularly so in situations where "real world" phenomena and processes are being taught. Using such a multimedia package in teaching pollution control processes is novel. This paper reports on the successful development of a multimedia package dealing with several pollution control processes and its evaluation. The pollution control processes illustrated in the multi-media software are physico-chemical processes which are widely used in both water and wastewater treatment. Teaching the design concepts for these processes in a conventional classroom setting is challenging because students have difficulty in visualising the techniques and processes involved. This difficulty is compounded by the fact that many of the processes occur naturally over longer time periods and so cannot be easily be integrated into normal teaching environments. The software package incorporates several different media modes including text, drawings, photographs, animation, and simulation. A pilot evaluation of this package using third year engineering students indicated that it supported the development of greater insight and understanding of the complex treatment processes being taught. On the teaching side, it was possible to adopt 1 hour lecture and 3 hours tutorial format against the traditional 2 hours each of lecture and tutorial.
Thiruvenkatachari, R, Ngo, H, Hagare, P, Vigneswaran, S & Ben Aim, RM 2002, 'Flocculation-cross-flow microfiltration hybrid system for natural organic matter (NOM) removal using hematite as a flocculent', Desalination, vol. 147, no. N/A, pp. 83-88.View/Download from: UTS OPUS
Hagare, P, Thiruvenkatachari, R & Ngo, H 2001, 'A feasibility study of using haematite to remove dissolved organic carbon in water treatment', Separation Science and Technology, vol. 3, no. 3, pp. 2547-2560.View/Download from: UTS OPUS
Hagare, P, Thiruvenkatachari, R & Ngo, HH 2001, 'A feasibility study of using hematite to remove dissolved organic carbon in water treatment', SEPARATION SCIENCE AND TECHNOLOGY, vol. 36, no. 11, pp. 2547-2559.View/Download from: Publisher's site
Dharmappa, HB, Corderoy, RM & Hagare, P 2000, 'Developing an interactive multimedia software package to enhance understanding of and learning outcomes in water treatment processes', Journal of Cleaner Production, vol. 8, no. 5, pp. 407-411.View/Download from: Publisher's site
Teaching and learning environments which use multimedia based resources greatly improve the effectiveness and efficiency of learning by engaging students at a deeper level than may otherwise be possible. This is particularly so in situations where `real world' phenomena and processes are being taught. Using such a multimedia package in teaching pollution control processes is novel. This paper reports on the successful development of a multimedia package dealing with several pollution control processes and its evaluation. The pollution control processes illustrated in the multimedia software are physico-chemical processes which are widely used in both water and wastewater treatment. Teaching the design concepts for these processes in a conventional classroom setting is challenging because students have difficulty in visualizing the techniques and processes involved. This difficulty is compounded by the fact that many of the processes occur naturally over longer time periods and so cannot be easily be integrated into normal teaching environments. The software package incorporates several different media modes including text, drawings, photographs, animation, and simulation. The preliminary pilot evaluation of this package using third year engineering students indicated that it provided greater insight and understanding of the complex treatment processes being taught.
Hagare, P. & Miller, S.C. 2007, 'On-Site Sanitation Technologies for Reuse' in Vigneswaran, S.V. (ed), Wastewater Recycle, Reuse, and Reclamation, Eolss Publishers Co., Ltd.,, UK, pp. 146-178.
Abeysuriya, K, Fam, DM, Hagare, P & Williams, J 2010, 'Transitioning to sustainable sanitation through cross disciplinary, practice-based research: an on-campus pilot of urine diversion at UTS', The 10th international conference of Australasian campuses towards sustainability (ACTS Inc): connecting curriculum and campus, International conference of Australasian campuses towards sustainability, RMIT, Melbourne, Australia, pp. 1-8.View/Download from: UTS OPUS
Waterborne sanitation using flushing toilets and sewer networks has been recognised as the most important medical milestone for its transformational impact on urban public health since the 19th century (Ferriman 2007). While this model of urban sanitation has become the accepted norm for the industrialised world, its cost and resource-intensive nature is increasingly recognised as unsustainable. Several alternative models offering improved sustainability through greater material efficiency have emerged (West 2003). One of these is urine diversion (UD), the topic of this paper.
McKibbin, JL, Willetts, JR, Hagare, P & White, K 2008, 'Valuing sustainable sanitation: the economic assessment of alternative sanitation programs', 8th IWA Specialized Conference on Small Water and Wastewater Systems (SWWS) and 2nd IWA Specialized Conference on Decentralised Water and Wastewater International Network (DEWSIN), IWA, Coimbatore, India, pp. 1-4.
Sangvikar, N, Hagare, P & Ngo, H 2007, 'Fibre Cement Industrial Water Recovery: A viable Alternative Water Source', Proceedings of International Conference on Cleaner Technologies and Environmental Management, International Conference on Cleaner Technologies and Environmental Management, Allied Publishers Pvt. Ltd., India, pp. 1-7.View/Download from: UTS OPUS
Australian water demands are increasing significantly with the increase of urbanization and industrialization. Thus, water is a valuable resource in Australia, but in short supply. There is a scope to make better use ofrecycled water as an additional water resource. Water reclamation is the best sustainable solution for water crisis. The recirculation of wastewater to reusable water can be achieved by implementing specific wastewater treatment technologies/or wastewater recycling for non-potable purposes.
Thiruvenkatachari, R, Ngo, HH, Hagare, P, Vigneswaran, S & Ben Aim, R 2002, 'Flocculation-cross-flow microfiltration hybrid system for natural organic matter (NOM) removal using hematite as a flocculent', DESALINATION, International Congress on Membranes and Membrane Processes (ICOM), ELSEVIER SCIENCE BV, TAULOUSE, FRANCE, pp. 83-88.View/Download from: Publisher's site
Dharmappa, HB, Hasia, A & Hagare, P 1995, 'Water treatment plant residuals management', WATER SCIENCE AND TECHNOLOGY, Asian Waterqual 95: The 5th IAWQ Asian Regional Conference on Water Quality and Pollution Control, PERGAMON-ELSEVIER SCIENCE LTD, MANILA, PHILIPPINES, pp. 45-56.View/Download from: Publisher's site