Australian Centre for Water
and Environmental Biotechnology

AWMC Seminar Program: Neil McIntyre & Bing-Jie Ni

Title: Water in mining: opportunities for research (Neil McIntyre)
Abstract: The mining sector as a whole remains well behind other sectors in investing in water management research. However, increasing attention to water-related risks and tightening of performance standards mean that there is now much interest by mine companies in engaging with water researchers. The research opportunities span water and wastewater treatment, water infrastructure optimisation, water accounting and reporting, adaptation to climate change, and community relations. The seminar will overview the water uses,w ater risks, types of opportunity for water research, some of the water projects and initiatives in the Sustainable Minerals Institute, and funding challenges and opportunities. Potential areas for partnership between AWMC and SMI will be raised for discussion.
Bio: Neil is a civil engineer with 25 years’ experience in water resources management. After six years working on wastewater projects in Scotland, he did his MSc and PhD at Imperial College, and worked there as an academic until 2013, when he joined UQ to lead the water research program in the Sustainable Minerals Institute. His research interests are centred around modelling the hydrological and water quality impacts of environmental change. His advisory roles have included advising UK government on rural land use change impacts, advising on water quality impacts of pulp mills at the International Court of Justice, and sitting on the Water Expert Panel of the Institution of Civil Engineers. He currently holds an ARC Future Fellowship in Water Sensitive Mining.

Title: Modeling of nitrous oxides emissions from WWTPs: Current status and future needs (Bing-Jie Ni)
Abstract: Nitrous oxide (N2O) can be emitted from wastewater treatment contributing to its greenhouse gas footprint significantly. Mathematical modeling of N2O emissions is of great importance toward the understanding and reduction of the environmental impact of wastewater treatment systems. This presentation reviews the current status of the modeling of N2O emissions from wastewater treatment. The existing mathematical models describing all the known microbial pathways for N2O production are reviewed and discussed. These included N2O production by ammonia-oxidizing bacteria (AOB) through the hydroxylamine oxidation pathway and the AOB denitrification pathway, N2O production by heterotrophic denitrifiers through the denitrification pathway, and the integration of these pathways in single N2O models. The calibration and validation of these models using lab-scale and full-scale experimental data is also reviewed. We conclude that the mathematical modeling of N2O production, while is still being enhanced supported by new knowledge development, has reached a maturity that facilitates the estimation of site-specific N2O emissions and the development of mitigation strategies for a wastewater treatment plant taking into the specific design and operational conditions of the plant.

Event Details
Date & Time: 
Friday, 16 December 2016
9am - 10am
Venue: AIBN Building 75, Level 1 Seminar Room

Event Contact: