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Comparative assessment of microbial desalination cells and microbial electrolysis desalination cells: Towards improved salt removal kinetics and efficiency – Hungary

Microbial desalination technology offers a promising platform for salt removal processes and for the recovery of ionic compounds. In terms of operation, systems without potential control (microbial desalination cell, MDC) and applying anode potential control (microbial electrolysis desalination cell, MEDC) can be primarily implemented. In this study, a comparative assessment of the different operational modes is carried out by using acetate-fed mixed culture MDC and MEDC reactors for NaCl removal (with 35 g L−1 initial concentration) in three-chamber setup. Desalination efficiency, kinetics, as well as the occurring electrochemical losses are evaluated.

In addition, ion exchange membrane […]

Comparative assessment of microbial desalination cells and microbial electrolysis desalination cells: Towards improved salt removal kinetics and efficiency – Hungary2024-12-28T14:09:47+01:00

Review on droplet falling film evaporation in desalination: A focus on heat transfer enhancement of micro-nano structured surfaces – China

Extensive research on horizontal tube falling film evaporation in desalination has been conducted on flow modes, flow and heat transfer characteristics and enhanced heat transfer structures. Studies on the flow modes have found that the heat transfer rate of the droplet mode is was markedly greater than that of the column mode and sheet mode due to the effects of thinning liquid film and increasing interface area in the droplet falling film evaporation.

The current measures to attain droplet falling film evaporation on smooth horizontal tubes involve reducing its flow density to the extent […]

Review on droplet falling film evaporation in desalination: A focus on heat transfer enhancement of micro-nano structured surfaces – China2024-12-28T14:07:16+01:00

Thin-film composite (TFC) membranes for sustainable desalination and water reuse: A perspective – Singapore

We focus on the key characteristics required for chlorine-resistant seawater RO membranes, and acid/base-resistant NF membranes for wastewater fractionation. We also highlight the impetus to focus on how TFC membranes can be used for resource recovery applications, such as the extraction of valuable ions from wastewater and brines.

(Source)

Thin-film composite (TFC) membranes for sustainable desalination and water reuse: A perspective – Singapore2024-12-22T13:19:34+01:00

International Holiday Greetings from the Desalination Institute DME – Germany

As the year comes to an end, we want to express our heartfelt gratitude for the trust you’ve placed in us, the positive feedback we’ve received, and the unwavering optimism we’ve shared in shaping a sustainable future together. Your collaboration and support have been invaluable to us.

We wish you and your families a wonderful holiday season and a successful start to 2024! As a small token of our appreciation, we’ve created a festive greeting card blending holiday spirit with themes of seawater desalination. It reflects the global nature of our work and our commitment […]

International Holiday Greetings from the Desalination Institute DME – Germany2024-12-28T14:11:15+01:00

BMC Plans Upgrade For Colaba Sewage Treatment Plant After Desalination Fails To Attract Bidders – India

he BMC is shifting its focus to upgrading the Colaba Sewage Treatment Plant (STP) in Mumbai after its previous attempt to build a desalination plant failed to attract bidders. Currently, the treated water from this STP is used for non-potable purposes such as gardening, road cleaning, and vehicle washing.

However, BMC plans to enhance the plant’s capacity to 15 million liters per day (MLD) and convert it into an advanced tertiary plant. This upgrade will enable the plant to treat sewage water, making it safe for drinking.

Every year, the city’s reliance […]

BMC Plans Upgrade For Colaba Sewage Treatment Plant After Desalination Fails To Attract Bidders – India2024-12-22T13:17:58+01:00

Hydrate-based desalination process using CO2 as hydrate forming agent – Modelling and techno-economic analysis – Portugal

Hydrates, also known as clathrates, are solid crystalline compounds resembling ice, composed of cages of hydrogen-bonded water molecules with small non-polar molecules, typically gas molecules, trapped inside. Hydrates are formed at low temperatures and high pressure; e.g. CO2 hydrates require temperatures between 0 and 10 °C and pressures 10 to 60 bar.

The clathrate hydrate-based desalination process involves contacting an electrolyte solution (salt water) and a guest compound (hydrate-forming gas) under suitable pressure and temperature conditions, leading to a phase change of water from liquid to solid and the formation of solid hydrates. Because of the salt-removing […]

Hydrate-based desalination process using CO2 as hydrate forming agent – Modelling and techno-economic analysis – Portugal2024-12-22T13:16:27+01:00

Transforming waste into value: Efficient recycling of KCl and NH₄F via electrodialysis metathesis – China

This KCl by-product often contains unreacted KF and organic solvents, complicating recycling efforts and leading to its classification as waste salt. Conventional methods for managing this waste salt typically involve landfilling, outsourcing treatment, and on-site regeneration. However, landfilling poses significant environmental risks, while outsourced treatment can incur substantial costs. In this context, on-site regeneration of KCl emerges as a promising solution that balances economic feasibility with environmental sustainability, underscoring the pressing need for innovative approaches to waste management in the fluorine chemistry sector.

(Source)

Transforming waste into value: Efficient recycling of KCl and NH₄F via electrodialysis metathesis – China2024-12-20T12:28:34+01:00

Facile constructing ZrO2 nanoparticles equipped with high conductivity carbon networks as pseudocapacitive anodes for removing phosphorus – China

Capacitive deionization (CDI) displays the merits of having eco-friendliness and low energy consumption when capturing phosphorus. However, traditional carbon electrodes often suffer from the limitation that phosphorus uptake sites are insufficient.

Herein, a novel ZrO2 nanoparticle equipped with a highly conductive carbon network (NZrC) was fabricated by a facile co-pyrolysis process. Na2EDTA can provide additional carbon backbones, N species, and metal chelation sites. Zr-MOF was applied as the ZrO2 precursor with abundant phosphorus trapping sites. The results suggested that Na2EDTA favors improving the ZrO2 dispersion, mesoporous channel formation, and pseudocapacitive behavior.

Facile constructing ZrO2 nanoparticles equipped with high conductivity carbon networks as pseudocapacitive anodes for removing phosphorus – China2024-12-02T10:59:05+01:00

Recovery of lithium carbonate crystals from a high salinity solution using membrane crystallizer with concentration and temperature gradients – Republic of Korea

Recovery of lithium carbonate crystals from a high salinity solution using membrane crystallizer with concentration and temperature gradients - Republic of Korea

Recovery of lithium carbonate crystals from a high salinity solution using membrane crystallizer with concentration and temperature gradients – Republic of Korea2024-11-30T12:39:40+01:00

Synthesizing high performance robust PSf loose nanofiltration membranes through nanobubble-assisted pore-forming – China

By leveraging nano-bubbles produced through the reaction between AC and NaOH without adding other pore-forming agents, the membrane-forming process of PSf was regulated.

It was found that the PSf LNF membranes prepared in NaOH-solution coagulation and immersion baths exhibited significantly enhanced permeation performance without compromising the rejection. These results suggested that the coagulation and immersion post-treatment processes under NaOH solution had a great effect upon the structure and the property of the membranes.

The LNF membrane prepared from 20 wt% PSf casting solution with 8 wt% AC achieved a permeation flux of 188.7 L m−2 h−1, […]

Synthesizing high performance robust PSf loose nanofiltration membranes through nanobubble-assisted pore-forming – China2024-11-30T12:38:57+01:00
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