Smart Solution to Improve Water-energy Nexus for Water Supply Systems

Helmbrecht, Jorge; Pérez, Jorge Juan Pastor; Moya, Carolina

doi:10.1016/j.proeng.2017.03.215

Cited by 38 publications

(14 citation statements)

References 3 publications

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“…Freshwater withdrawals for energy can modify flow regimes [35] and water abstraction and storage in reservoirs can have adverse effects on aquatic biota [36]. A variety of indicators have been proposed and used to summarize aspects of altered flow regimes that lead to ecological harm.…”

Section: Implications For Stream Habitatmentioning

confidence: 99%

Avoiding Conflicts between Future Freshwater Algae Production and Water Scarcity in the United States at the Energy-Water Nexus

Jager

Efroymson

Baskaran

2019

Water

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Sustainable production of algae will depend on understanding trade-offs at the energy-water nexus. Algal biofuels promise to improve the environmental sustainability profile of renewable energy along most dimensions. In this assessment of potential US freshwater production, we assumed sustainable production along the carbon dimension by simulating placement of open ponds away from high-carbon-stock lands (forest, grassland, and wetland) and near sources of waste CO 2 . Along the water dimension, we quantified trade-offs between water scarcity and production for an ‘upstream’ indicator (measuring minimum water supply) and a ‘downstream’ indicator (measuring impacts on rivers). For the upstream indicator, we developed a visualization tool to evaluate algae production for different thresholds for water surplus. We hypothesized that maintaining a minimum seasonal water surplus would also protect river habitat for aquatic biota. Our study confirmed that ensuring surplus water also reduced the duration of low-flow events, but only above a threshold. We also observed a trade-off between algal production and the duration of low-flow events in streams. These results can help to guide the choice of basin-specific sustainability targets to avoid conflicts with competing water users at this energy-water nexus. Where conflicts emerge, alternative water sources or enclosed photobioreactors may be needed for algae cultivation.

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Section: Implications For Stream Habitatmentioning

confidence: 99%

Avoiding Conflicts between Future Freshwater Algae Production and Water Scarcity in the United States at the Energy-Water Nexus

Jager

Efroymson

Baskaran

2019

Water

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“…Water utilities needs to prepare to be 'fit for the future' by adapting ways to achieve maximum operational cost recovery, expand service connectivity and transform into customer-oriented service providers through innovative solutions that address water supply and energy reduction [110]. Water utilities in cities such as Kampala (Uganda), Lagos (Nigeria), Bamako (Mali), and Niamey (Niger) have been projected to experience exponential growth in water demand due to high rates of urbanization, since they are located in areas of high-risk water stress [90,111].…”

Section: Discussionmentioning

confidence: 99%

Applying the Water-Energy Nexus for Water Supply—A Diagnostic Review on Energy Use for Water Provision in Africa

Macharia¹,

Kreuzinger²,

Kitaka

2020

Water

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This work explores the application of the Water-Energy Nexus concept for water supply in the African context, where its operationalization is quite limited compared to developed regions. Furthermore, water supply and demand drivers and their influence on energy use are examined. This study found that there is limited literature available on the operationalization of the concept, and energy use is not considered a key performance indicator by water regulators and utilities. Regionally, most of the studies were carried out in the northern and southern Africa, where energy demand for water supply through desalination is high. An analysis of water supply and demand drivers show diminishing quantities of available freshwater, and increased anthropogenic pollutant loads in some areas are projected. Consequently, utilities will likely consider alternative energy-intensive water supply options. Increased population growth with the highest global urban growth rate is projected, with about 60% of the total population in Africa as urban dwellers by 2050. This implies huge growth in water demand that calls for investment in technology, infrastructure, and improved understanding of energy use and optimization, as the largest controllable input within utilities boundaries. However, it requires a data-driven understanding of the operational drivers for water supply and incorporation of energy assessment metrics to inform water-energy policies and to exploit the nexus opportunities.

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“…Similarly, other papers that showed up in our results did not always discuss finance directly. For example, one study deals with water's complex problem and the financial problem of maintaining water supplies (Helmbrecht, Pastor, & Moya, 2017). Here, the researchers focus on using data to improve decision-making.…”

Section: Watson Computer Developed By Ibm (International Businessmentioning

confidence: 99%

Artificial intelligence techniques in finance and financial markets: A survey of the literature

2021

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Both academic and nonacademic literature is evolving following the oscillating development of artificial intelligence (AI) and computing power's evolution in their application to finance and financial markets. The limits to economic growth encountered after the financial crisis and, successively, the recent pandemic bursts have posed new challenges to AI-related technologies. The surveyed publications have given hope in harvesting improved efficiency, new data, information, advisory and management services, risk mitigation, and some unanswered questions regarding negative impacts on sustainable growth and increasing economic welfare.

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Smart Solution to Improve Water-energy Nexus for Water Supply Systems

Cited by 38 publications

References 3 publications

Avoiding Conflicts between Future Freshwater Algae Production and Water Scarcity in the United States at the Energy-Water Nexus

Avoiding Conflicts between Future Freshwater Algae Production and Water Scarcity in the United States at the Energy-Water Nexus

Applying the Water-Energy Nexus for Water Supply—A Diagnostic Review on Energy Use for Water Provision in Africa

Artificial intelligence techniques in finance and financial markets: A survey of the literature

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