Text copieSaudi Arabia has made strides in water desalination, improving efficiency by 80 per cent and slashing costs by 50 per cent in recent years, according to Mansour bin Hilal Al-Mushaiti, the Kingdom’s Deputy Minister of Environment, Water, and Agriculture. Daily desalination output has surged to 6 million cubic metres, contributing to a total capacity of 11.3 million cubic metres. This leap forward has been made possible by expanding water transmission networks, now spanning over 14,000 km, equivalent to double the length of the Nile River, overcoming challenging terrains to deliver water nationwide. The Kingdom’s strategic water storage capacity has […]

The South Australian Government has approved plans to build a new desalination plant at Billy Lights Point on the Eyre Peninsula.  The State Government said that Eyre Peninsula’s future water security is at serious risk with water levels running low in the region’s underground aquifers.  There are approximately 35,000 SA Water customers on the Eyre Peninsula, with around 75 per cent of the region’s drinking water sourced from these groundwater basins.   Plans for the project were recommended for approval by the State Commission Assessment Panel and were subsequently approved by Blair Boyer under delegation. As part of the approval, 22 […]

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. NZrC-21 at 1.2 V displays low energy consumption and the […]

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

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, and a Congo red (CR, Mw =696 Da) rejection of over […]

The proposed pilot FD unit has multiple brine extraction stages to reach the desired water salinity. Four distinct feed water salinity are tested. The results show that the unit has the potential to produce low-salinity water without the need for washing or crushing which causes significant mass loss. The results indicate that water is obtained at a salinity of 393 and 1225 ppm NaCl at feed water salinities equal 10,000 and 40,000 ppm NaCl, respectively. Furthermore, the system produces an approximate constant volume equal 850 mL which is around 28 % of feed water volume. The gain output ratio (GOR) […]