Solar Powered Desalination Trial Demonstrates a Route to Net Zero Farming in the Desert

Trial success for world’s first first fully circular solar thermal desalination system 

The UAE imports around 85% of its food, making it one of the world’s most food-import dependent nations. Despite critical water stress, the nation is working towards food independence as part of its National Food Security Strategy. Making agriculture sustainable will require innovative solutions, especially as traditional desalination relies heavily on fossil fuels and produces toxic brine. 

Technology developer Desolenator has developed the world’s first fully circular solar thermal desalination system. Joining forces with agri-food tech company Silal, they put it to the test in the greenhouses of the UAE desert.

The aim was to turn saline groundwater into safe water for irrigation and cooling for greenhouses. The trial at the Al Ain solar plant showed off-grid desalination can reliably support desert agriculture without brine disposal challenges.

Vantaggi dell'approccio e dell'innovazione 

  • Circular resource model: The system converts brine into useful salts, achieving zero liquid discharge and eliminating toxic waste associated with traditional desalination.
  • Energy independence: Utilizing proprietary PV-T panels, the system operates off-grid with thermal storage, decoupling water production from fossil fuel reliance and price volatility.
  • Agricultural resilience: Custom remineralisation of water optimises crop yield, while integrated cooling reduces greenhouse water consumption by significant margins.

Servizi specialistici coinvolti

  • Supporto alla progettazione della sperimentazione: Valutiamo i piani di sperimentazione tecnologica in base ai quadri di innovazione degli utenti. Il Trial Reservoir affronta in modo specifico le domande chiave a cui la sperimentazione deve rispondere.
  • Convalida della prova: Riceviamo e valutiamo il rapporto di fine sperimentazione dal fornitore della tecnologia. Il Serbatoi di prova affronta in modo specifico le domande chiave a cui il processo deve rispondere.
  • Due diligence: Isle dispone di un solido processo per aiutare le parti interessate ad adottare tecnologie innovative e garantire che siano adatte allo scopo.
  • Repayable grant funding: Isle facilita la negoziazione con gli sviluppatori di tecnologie e gli utenti finali per concordare i fattori critici di successo delle prove e gli indicatori chiave di prestazione (KPI). I prestiti vengono quindi erogati agli sviluppatori di tecnologie.
  • Zero risk trial: Se una sperimentazione non raggiunge i suoi KPI, l'azienda tecnologica non è obbligata a restituire il prestito. Allo stesso modo, l'utente finale non ha l'obbligo di effettuare un ordine di acquisto; il serbatoio di prova si assume il rischio.
  • Investor introductions: Isle utilizza la sua vasta rete mondiale per fornire introduzioni a potenziali investitori.

Risultati 

  • Water security: The pilot successfully delivered 25m³/day of distilled water from saline groundwater, proving a scalable model for food independence in arid regions.
  • Sustainable cooling: The integrated cooling system reduced energy requirements for temperature regulation, delivering 500 kWh of cooling capacity for the greenhouses.
  • Carbon reduction: The system demonstrated the ability to reduce emissions per m³ of water produced by up to 85% compared to fossil-powered reverse osmosis.

 

Contatto chiave:

For enquiries and further information, please contact Dr Jo Burgess, Head of Trial Reservoir at [email protected].

Servizio Spotlight
World’s first fully solar powered desalination trial addresses UAE water stress and food independence through desert agriculture.
The trial demonstrated that off-grid desalination delivering 25 m³/day of irrigation-grade water was possible, helping to reduce the UAE’s reliance on imported food.
The trial achieved zero liquid discharge in field conditions, with brine fully converted into usable salts and no toxic waste requiring disposal.
The trial achieved up to 85% emissions reduction per cubic metre of water (vs traditional desalination techniques) by replacing fossil-fuel desalination with solar thermal energy and integrated storage.
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