Brine Mining from Desalination: A New Frontier for Critical Minerals

Added:

Opening
DTRI's Mission
Strategic Goals
Brine Value
Sodium Project
Plant Design
Future Metals
Magnesium Plant
Q&A Session
Future Plans

Opening

9:25
Playing Section
  • 1

    Introductory remarks from the Latin American desalination association.

  • 2

    Focus shifts to the webinar's core: extracting value from desalination brine.

  • 3

    The aim is to showcase technologies for mineral extraction and circular economy.

The fundamentals of desalination processes, particularly reverse osmosis, and how hyper-saline brine is generated as a waste byproduct.
Basic aqueous chemistry principles, including ion concentration, solubility limits, and chemical precipitation reactions.
The definition of 'critical minerals' (such as lithium, magnesium, and cesium) and their strategic importance in modern technology and clean energy transitions.
The core tenets of a circular economy, specifically the concept of transforming industrial waste streams into valuable resource inputs.
Advanced chemical separation technologies utilized in mineral extraction, such as selective ion-exchange resins, electrodialysis, and solvent extraction.
Techno-economic analysis (TEA) and scalability challenges of ocean brine mining compared to traditional terrestrial mining operations.
The environmental dynamics of marine brine disposal and how Zero Liquid Discharge (ZLD) technologies can achieve ecological sustainability in water treatment.
The geopolitical and regulatory frameworks governing ocean-derived resource extraction, including maritime jurisdiction and international supply chain policies.
3.2K views66likes2:01:03@aladyr_asociacionOriginal Release: 2022-02-23

Ocean brine mining is an emerging technology that converts the concentrated brine waste stream from seawater desalination plants into valuable minerals and metals, including sodium chloride, bromine, magnesium, potassium, and potentially lithium and rubidium. The process uses nanofiltration membranes to separate monovalent ions (sodium and chloride) from divalent ions (calcium, magnesium, strontium), allowing for higher water recovery rates (from 45% to 55%) and enabling the extraction of high-purity minerals at costs significantly lower than traditional mining methods. This approach addresses both the economic challenge of desalination costs and the environmental challenge of brine disposal, creating a circular economy where what was previously considered waste becomes a valuable resource. The technology offers particular promise for regions with existing desalination infrastructure and chlor-alkali industries, such as Latin America, where it could provide additional revenue streams to offset water production costs.