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To demystify the water technology landscape and elevate the most scalable solutions in this space, UpLink recently ran the Zero Water Waste Challenge, from which the top 10 water-focused entrepreneurs or 'Aquapreneurs' from a pool of 192 applicants representing 40 different countries have now been announced.
Hydrogen emits only water when burned but creating it can be carbon intensive. Depending on production methods, hydrogen can be grey, blue or green – and sometimes even pink, yellow or turquoise. However, green hydrogen is the only type produced in a climate-neutral manner making it critical to reach net zero by 2050.
Green water is the rainwater available to plants in soil. A new study found widespread pressure on this resource has crossed a critical limit worldwide. Green water - rainwater available to plants in soil - and blue water are under pressure, affecting freshwater's ability to sustain a stable Earth system.
Water operators have long been stewards of an essential resource and water infrastructure is a cornerstone of every prosperous economy. At the same time, today’s water systems are major sources of global greenhouse gas (GHG) emissions: global water utilities emit the same volume of GHGs as the world’s shipping industry.
4. Green hydrogen off-takers and value. The main challenge is how to monetize green hydrogen. Firstly, while cost-effective green hydrogen can be produced in sunny places (such as Australia, Portugal, Spain or Tunisia), off-taking industrials are not usually next door.
Producing hydrogen from renewable resources involves the electrolysis of water, where an electric charge splits water molecules into hydrogen and oxygen. In an era of increasing water security issues, rapidly progressing climate change and droughts, however, water scarcity has become an urgent problem globally. A growing world population only ...
Energy requirement of modern water treatment plants depends largely on quality of feedstock water, quality of permeate and type of technology used. Most commonly used reverse osmosis plants consume roughly 0.0012 kWh/l and 0.0046 kWh/l for brackish water and seawater feedstock, respectively. In addition, depending on the quality of produced ...
“When burned, hydrogen emits only water. And if that hydrogen is produced via electrolysis using just water and renewable electricity, then it is completely free of CO₂ emissions,” according to Mitsubishi Heavy Industries Group (MHI). Hydrogen can also be low carbon if produced using fossil fuels and carbon capture, utilization and ...
Green ammonia, by contrast, relies on renewable energy, and derives its hydrogen from water and its nitrogen from air. This form of ammonia production is typically more expensive but is becoming cheaper, not least as renewable energy prices fall.
Europe and China are leading the installation of new pumped storage capacity – fuelled by the motion of water. Batteries are now being built at grid-scale in countries including the US, Australia and Germany. Thermal energy storage is predicted to triple in size by 2030. Mechanical energy storage harnesses motion or gravity to store electricity.