Episodes
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Professor Jesse Nippert discussed how these adaptations, like enzyme activity and water transport, influence how plants, especially woody species, dominate during droughts. The conversation also revealed that afforestation isn't always straightforward and can sometimes negatively impact the climate. Finally, it highlighted the importance of understanding plant physiology to improve climate models and better predict environmental changes.
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Professor Wim Thiery discusses the critical impact of climate change on water resources, particularly in Africa. We explore how climate extremes like droughts and floods, combined with changes in land cover, are reshaping water availability. Professor Thiery emphasizes the need for both global climate action and smart local water management to address these challenges effectively.
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Michael A. Larsen, CEO of EnviroNor, discusses their floating desalination vessels—old ships turned into mobile water treatment plants. These vessels can produce up to 10,000 cubic meters of drinking water per hour. Unlike traditional plants, they can move to the best locations, saving energy and minimizing environmental impact. Their mobility also makes them ideal for helping cities during water shortages, offering a practical solution for unpredictable water needs.
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Quantum Wei, founder of Harmony Desalting, explained their Batch Reverse Osmosis (RO) technology, which dynamically adjusts pressure to save energy. Using conventional membranes and a unique bladder system, Batch RO handles fluctuating salinity and pressure, making it more efficient and resilient against fouling and scaling. At the Yuma Desalting Plant, Batch RO treated scaling-prone brine from a brackish water RO system, achieving 83% water recovery without additional antiscalants. Harmony Desalting is scaling up Batch RO for industrial use, integrating multiple membrane modules, and testing under higher salinity to make desalination more affordable and accessible. Independent control of process parameters gives Batch RO an edge, offering more water with less energy and fewer chemicals.
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Mark Ralph, CEO of Axine Water Technologies, explains how their method enhances conventional electrochemical oxidation by using multiple catalysts in a single reactor to break down tough contaminants like PFAS and pharmaceuticals. Their treatment-as-a-service (TAAS) model provides a complete package, including installation, operation, and maintenance, helping clients meet regulations without technical hassles. Their versatile system serves various industries, including pharmaceuticals and electronics manufacturing. Axine's R&D focuses on improving performance and energy efficiency through advanced materials and machine-learning algorithms, with more innovations on the horizon.
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Pablo Cassorla, founder and CEO of Remote Waters, shared how his team is developing decentralized desalination systems by examining around 400 components and redesigning the system with software. This innovation enables rural communities to access fresh water using renewable energy at an affordable cost.
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Akash Singh, co-founder of Urbanblue Technologies, addresses the inefficiencies of traditional wastewater treatment sensors by using real-time imaging and AI. Their system continuously samples water, captures high-resolution images of microorganisms, and uses AI to provide immediate recommendations for improving water quality. This approach, which is scalable and reduces energy consumption, offers a cost-effective and accurate alternative to outdated BOD and COD sensors. Urbanblue's affordable hardware-as-a-service model emphasizes the long-term benefits of efficient water management, making innovative, data-driven solutions the future of water treatment.
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Sreenath Bolisetty, CTO and Co-founder of BluAct Technologies, explains how protein nanofibers can effectively remove heavy metals and radioactive pollutants from water. These nanofibers, made from whey protein, have a high surface area and binding sites that adsorb multiple metal ions and pollutants. Integrated into activated carbon, they efficiently purify water. The solution operates without electricity, using gravity and sustainable materials. It can recover valuable metals from wastewater and remove contaminants like arsenic, making it both eco-friendly and cost-effective.
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Karthik Kunjali, Co-founder & CEO at Stockholm Water Technology (SWT), discusses how their CDI technology stands out from reverse osmosis by attracting and removing contaminants, making it ideal for low-salinity applications and specific pollutant removal like heavy metals and nutrients. This method is energy-efficient and customizable, perfect for aquaculture and municipal wastewater polishing. While many CDI attempts have failed due to unreliability and complexity, SWT’s advanced material design and intelligent software optimize energy use and contaminant removal. Their modular and scalable architecture offers tailored, sustainable water treatment solutions.
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Rhea and I hosted Professor Larry Mayer, Director of the Center for Coastal and Ocean Mapping at the University of New Hampshire. He discussed the latest advancements in ocean floor mapping, utilizing sophisticated sonar technology to provide essential data on ocean currents and salinity, crucial components of the global water cycle. Comprehensive ocean mapping is vital for predicting changes in marine environments and supporting effective ocean resource management.
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My co-host Rhea Verbeke and I welcomed Professor Martin Truffer, a distinguished glaciologist, who highlighted the critical role glaciers play in maintaining stable water supplies. We explored the alarming rate of glacier retreat due to climate change, noting that while some glaciers may be beyond saving, others can still be preserved if we act quickly to reduce greenhouse gas emissions. Professor Truffer emphasized the importance of understanding glacier dynamics and the potential of AI in predicting future changes, advocating for a focus on reducing carbon emissions over technological fixes. This conversation underscores the urgent need to address climate change, using glacier retreat as a powerful indicator of broader environmental shifts.
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Professor Stephan Pfister from ETH Zurich focuses on integrating water scarcity into life cycle assessments (LCA) to guide sustainable resource management. His research examines the trade-offs between water use, land use, and biodiversity, offering insights for improved environmental policies. Additionally, Professor Pfister highlights the need for global collaboration in agriculture and industry to promote sustainable development and positive environmental impacts.
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Atomically Precise Membranes by Professor Radha Boya at the The University of Manchester, is pioneering the development of atomically thin membranes using graphene and other two-dimensional materials. These angstrom-scale channels enable highly selective ion and molecule separation, greatly enhancing water desalination efficiency. Her work focuses on advanced nanofabrication techniques, manipulating the precise dimensions of these channels to optimize filtration performance, potentially revolutionizing water purification technologies.
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Professor Kim Trevathan narrates his personal journey paddling the Tennessee River, reflecting on environmental changes observed over two decades. His narrative wove together personal anecdotes with environmental insights, illustrating how human interventions like damming have altered river ecosystems. Kim’s stories highlight the importance of direct interaction with nature for understanding environmental impacts and fostering a deeper appreciation for natural waterways.
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In our today’s podcast episode, Rhea and I have welcomed Sterling Professor Menachem Elimelech from Yale University. He discussed the challenges and advancements in seawater desalination, emphasizing that significant gains lie in optimizing system design and using real-time monitoring and sensor technologies rather than focusing solely on new membrane materials. He also highlighted the potential of electro-dialysis for brackish water desalination and the importance of understanding multi-component transport in membranes.
Professor Elimelech also covered practical aspects of pretreatment and post-treatment in desalination. He noted that current pretreatment technologies are outdated and suggested that developing fouling-resistant membranes could reduce the need for extensive pretreatment, saving costs and energy. He emphasized the need to improve boron and chloride removal for agricultural use and critiqued the research culture that prioritizes flashy material advancements over practical system improvements. This conversation sheds light on future directions in desalination technology and the importance of bridging research with practical applications.
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In a podcast episode, Carlos Garcia from Genaq details their advanced technology for extracting water from the air. He explains that their machines are designed to efficiently handle variable power inputs from renewable sources like solar panels, eliminating the need for costly batteries and inverters. This significantly reduces both initial investment and operational costs.
Garcia highlights a project in Djiburi, Eastern Africa, where Genaq installed a self-sufficient, 5,000-liter-per-day machine powered solely by solar energy, demonstrating the system's capability in remote areas. He also discusses ongoing innovations aimed at utilizing excess solar energy to extend production into nighttime hours, effectively doubling output without substantial cost increases.
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Gerhard Loots, CEO of Kallipr IoT Technologies, introduces advanced IoT technologies aimed at enhancing agricultural practices. He detailed a new sensor device that simplifies battery replacement—a critical improvement that significantly reduces maintenance time and costs. Gerhard also discussed the company's commitment to environmental sustainability, including a battery recycling program that complements their durable, easy-to-manage IoT devices.
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Ion Padilla discussed the innovation of using satellite data for environmental monitoring, emphasizing Wegaw's hybrid model which integrates automated and manual data collection. This approach offers cost-effective, accurate environmental assessments, reducing the need for expensive, frequent field campaigns. Ion highlighted the system's ability to provide daily updates on snow depth across the globe, a vital tool for managing water resources in real-time.
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Slava Libman, CEO of FTD Solutions, takes us into the world of digital transformation in water management. Libman explains the development and application of digital twins for water treatment and distribution systems, highlighting how this technology can simulate, predict, and optimize water process flows and treatment outcomes using data analytics and AI. This episode offers an in-depth look at how integrating digital twins into water systems not only improves operational efficiencies but also enhances decision-making and strategic planning for water utilities and industries. The discussion further touches on the potential of these technologies to support sustainable water management practices, reduce costs, and improve environmental impacts.
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In this episode of Smart Water Solutions, Gregg Semler, CEO of InPine Energy, introduces us to the transformative Hydro XS technology. Semler discusses the engineering behind leveraging the kinetic energy of water flowing through municipal and industrial pipelines to generate renewable energy. This not only provides a sustainable energy solution but also optimizes water infrastructure efficiency. By dividing the mechanics of micro-hydroelectric systems and their integration into existing water systems, this conversation shines a light on the untapped potential of water as a clean energy source, contributing to both energy and water sustainability goals.
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