Researchers suggest smart solution to harness waste heat from industry
Norway wastes huge amounts of energy. Surplus heat produced by industry is hardly exploited at all.
Jun 27, 2024
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Norway wastes huge amounts of energy. Surplus heat produced by industry is hardly exploited at all.
Jun 27, 2024
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Computers, cell phones, and other electronic devices require active cooling to prevent overheating. Typically, devices in the entertainment industry and power electronics are cooled by directing an airflow to specific areas. ...
Jun 25, 2024
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Scientists at EPFL have developed advanced atom-thin graphene membranes with pyridinic-nitrogen at pore edges, showing unprecedented performance in CO2 capture. It marks a significant stride toward more efficient carbon capture ...
Jun 24, 2024
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In a breakthrough for lithium recovery technologies, researchers from the Qingdao Institute of Bioenergy and Bioprocess Technology (QIBEBT) of the Chinese Academy of Sciences, together with collaborators, have developed a ...
Jun 14, 2024
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Carbon dioxide (CO2) is both an essential resource for life on Earth and a greenhouse gas contributing to global warming. Today, scientists are investigating CO2 as a promising resource that can be utilized to create renewable ...
May 15, 2024
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As the world is transitioning from a fossil fuel-based energy economy, many are betting on hydrogen to become the dominant energy currency. But producing "green" hydrogen without using fossil fuels is not yet possible on ...
May 9, 2024
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Researchers led by Ryuhei Nakamura at the RIKEN Center for Sustainable Resource Science (CSRS) in Japan have improved on their green and sustainable method of extracting hydrogen from water by using a custom-made catalyst ...
Apr 26, 2024
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Estuaries—where freshwater rivers meet the salty sea—are great locations for birdwatching and kayaking. In these areas, waters containing different salt concentrations mix and may be sources of sustainable, "blue" osmotic ...
Apr 24, 2024
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Water scarcity around the world is a bigger problem than ever, and desalination is critical to solving it. The best available technologies for separating salt from seawater, though, are costly and require a great deal of ...
Apr 19, 2024
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Bipolar membranes are a class of ion-conductive polymers comprised of two oppositely charged layers, known as the cation-exchange and anion-exchange layer. These membranes are central to the functioning of various technologies, ...
A membrane is a layer of material which serves as a selective barrier between two phases and remains impermeable to specific particles, molecules, or substances when exposed to the action of a driving force. Some components are allowed passage by the membrane into a permeate stream, whereas others are retained by it and accumulate in the retentate stream.
Membranes can be of various thickness, with homogeneous or heterogeneous structure. Membrane can also be classified according to their pore diameter. According to IUPAC, there are three different types of pore size classifications: microporous (dp < 2nm), mesoporous (2nm < dp < 50nm) and macroporous (dp > 50nm). Membranes can be neutral or charged, and particles transport can be active or passive. The latter can be facilitated by pressure, concentration, chemical or electrical gradients of the membrane process. Membranes can be generally classified into three groups: inorganic, polymeric or biological membranes. These three types of membranes differ significantly in their structure and functionality.
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