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Desalination

Desalination is the industrial process of removing salt and other minerals from seawater or brackish water to produce fresh water suitable for human consumption, agriculture or industrial use. The technology addresses water scarcity in arid regions, coastal areas and industries with high water demand, particularly where conventional freshwater sources are limited or overexploited. The two dominant methods are thermal distillation, which uses heat to evaporate and condense water, and reverse osmosis, which forces water through semipermeable membranes under high pressure to filter out dissolved salts. Reverse osmosis has become the preferred technology globally owing to lower energy consumption and operational costs compared with thermal processes. Desalination is widely deployed in the Middle East, North Africa, Australia and parts of the Americas, with the Gulf states and Israel among the largest users. The mining sector increasingly adopts desalination to secure water supplies in water-stressed regions, reducing reliance on groundwater and surface water that may be needed for communities and ecosystems. Energy intensity remains a key challenge, as desalination plants require substantial electricity, though integration with renewable energy sources is growing. Environmental concerns include the disposal of concentrated brine, which can harm marine ecosystems if not managed properly. Capital and operating costs are higher than conventional water treatment, but falling technology prices and rising water stress are driving broader adoption. Desalination capacity worldwide has expanded rapidly over the past two decades, supported by advances in membrane technology, energy recovery systems and modular plant designs.

Desalination News


A tap dripping
Private sector could boost development
16th October 2026

South Africa needs greater private-sector participation in water infrastructure as traditional funding and management approaches struggle to address deteriorating infrastructure and water losses,... 


A dam in South Africa
South Africa, Zim mulling $500m dam project
16th October 2026 By: Bloomberg

South Africa and Zimbabwe are discussing a $500-million dam project to supply water to an industrial hub near their border, according to documents seen by Bloomberg. The proposed Thuli Moswa dam,... 


How Middle East innovation is reshaping future infrastructure
How Middle East innovation is reshaping future infrastructure
2nd October 2026

As climate change, urbanisation and geopolitical uncertainty reshape infrastructure priorities around the world, the Middle East is emerging as a global laboratory for resilient engineering. The... 


Copper plates
High copper prices support miners in Chile, but investments dent gains
25th September 2026 By: Reuters

Despite strong copper prices, growing investment demands are offsetting much of the gains posted by mining companies in Chile, Moody's said in a report on Thursday. Chile, the world's largest... 


Lithium brine well in Argentina
Argentina, Chile revive cross-border mining framework for investment
27th August 2026 By: Reuters

Argentina and Chile are seeking to unlock billions of dollars in mining investment by advancing legal and regulatory frameworks that would allow companies to share infrastructure and resources... 


crops being irrigated
Research supports irrigation as a mine water management strategy
31st July 2026 By: Devina Haripersad

Research conducted by the University of Pretoria (UP) shows that suitable mine water can be used responsibly for irrigation, offering mining companies a productive and potentially lower-cost... 


Water
Rio Tinto, Western Australia agree to sell desalination plant to Yindjibarndi WaterCo
27th July 2026 By: Reuters

Rio Tinto said on Monday it had agreed with the Western Australian government to sell their joint venture stakes in the Dampier Seawater Desalination Plant to Yindjibarndi WaterCo. The plant, now... 


Magazine cover image
Necsa outlines plans for rejuvenating South Africa’s nuclear sector
5th June 2026 By: Rebecca Campbell

The South African Nuclear Energy Corporation (Necsa), the State-owned company responsible for nuclear research and technology development, as well as the provision of nuclear applications and... 


Collahuasi copper mine
Anglo, Glencore seek clarification on Collahuasi enviro authorisation
18th May 2026 By: Marleny Arnoldi

Diversified miners Anglo American and Glencore on May 18 acknowledged a ruling made by Chile's Second Environmental Tribunal, which opted to set aside the environmental authorisation issued by the... 


CLEARING INVASIVE PLANTS 
The clearing of invasive plants is a cost-effective way to free up billions of litres of water in Cape Town’s catchment areas
Cape Town progresses scheme to diversify water supply
8th May 2026 By: Keabetswe Shilakwe

The City of Cape Town is advancing its New Water Programme (NWP) to reduce dependence on rain-fed dams, having allocated R492-million of its 2025/26 budget to the programme. The NWP targets the... 


LEGACY ISSUE Acid mine drainage, particularly in Gauteng, is a long-standing issue, following the post-boom closure of underground gold mines during the twentieth century
Sustainable long-term AMD solutions floated
1st May 2026 By: Keabetswe Shilakwe

With a State-led long-term solution to treating acid mine drainage (AMD) in the Eastern and Central basins of the greater Witwatersrand Goldfields being provisionally deferred to 2040,... 


Green hydrogen developments integrate a range of systems
Facilitating multi-disciplinary integration in green hydrogen projects
9th April 2026

SLR Consulting asserts that the success of large-scale green hydrogen developments is dependent on early, integrated collaboration between engineers, environmental specialists and financiers to... 


Large native copper nugget
El Abra copper mine expansion, Chile – update
27th March 2026 By: Sheila Barradas

Freeport-McMoRan has started the process of obtaining an environmental permit for the expansion. 


Large-scale green hydrogen developments integrate renewable generation, transmission infrastructure, desalination, hydrogen production and export facilities, creating complex systems that require coordinated technical and environmental planning
Multi-disciplinary integration vital to success of green hydrogen projects, SLR Consulting
17th March 2026

The emerging green hydrogen economy holds significant promise for the global energy transition. However, these developments present considerable challenges  - particularly in managing systems... 


An image of Wemmershoek Dam
Water projects progress, amid ‘frighteningly’ low dam levels
13th March 2026

Data indicates that dam levels are “frighteningly low” and daily water use is “relentlessly” high, the City of Cape Town (CoCT) shared in a media briefing held on February 23, providing insight... 


An image of damaged water infrastructure
Firm outlines steps towards infrastructure renewal
13th March 2026 By: Trent Roebeck

Securing South Africa’s water future requires disciplined implementation, diversified supply and stronger financial governance, says financial services provider Investec Sustainable Solutions... 


Western Australian Premier Roger Cook says the plant will support communities and industries.
Rio Tinto, WA government partner on A$1.1bn Pilbara desalination plant
5th March 2026 By: Mariaan Webb

Mining major Rio Tinto and the Western Australian government have formed a 50:50 joint venture (JV) to complete the Dampier seawater desalination plant in the Pilbara, a project aimed at improving... 


Capstone Copper restarts Chile's Mantoverde mine while strike continues
2nd February 2026 By: Reuters

Capstone Copper resumed operations at its Mantoverde copper and gold mine in northern Chile, even as a strike by a labor union representing nearly 22% of its workforce continued, the Canadian miner... 


Striking workers force production halt at Chile's Mantoverde mine
23rd January 2026 By: Reuters

roduction at Capstone Copper's Mantoverde copper and gold mine in northern Chile is largely halted after the mine's desalination plant was shut down amid a nearly three-week labor strike, the... 


An image of Jason Lightfoot
Structural reform can unlock investment
16th January 2026 By: Lumkile Nkomfe

South Africa’s worsening water infrastructure crisis is not so much a problem of capital scarcity as it is of project bankability, says specialist investment company Futuregrowth Asset Management... 


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pqt: 0.072s - ct: 0.124s - 275pq - 2rq
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