User Tag List

+ Reply to Thread
Results 1 to 3 of 3

Thread: There's A Caveat With Electric Vehicles

  1. #1
    Original Ranter
    Points: 641,816, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 100.0%
    Achievements:
    SocialCreated Album picturesOverdrive50000 Experience PointsVeteran
    Awards:
    Posting Award
    Peter1469's Avatar Advisor
    Karma
    454492
    Join Date
    Jun 2011
    Location
    NOVA
    Posts
    189,766
    Points
    641,816
    Level
    100
    Thanks Given
    122,016
    Thanked 105,476x in 68,956 Posts
    Mentioned
    2367 Post(s)
    Tagged
    0 Thread(s)

    There's A Caveat With Electric Vehicles

    There's A Caveat With Electric Vehicles

    Lithium mining. Although perhaps that may be soon moot based on my earlier thread about a new battery that is better and does not use lithium.

    It’s certain that the EV era is coming. A shift from internal-combustion cars and trucks to electric cars and trucks is a necessary step on the path to a more sustainable transportation ecosystem. But there’s a catch — always is — and a recent report from Undark, a digital science magazine, offers great insight into one of the often-overlooked costs of EV production.





    EVs need lithium for their batteries, and heavy lithium mining could be very harmful to regions such as the Atacama Salt Flat, where mining companies are ramping up activity to meet demand. Promises to ban purely gas-burning cars are being made by governments worldwide, from California and Massachusetts to the UK and Japan. If these plans are enacted, it will mean a drastic increase in the demand for lithium.


    So, what happens when the demand for lithium hits a peak? The report cites local experts who claim that the mining has begun to decrease the groundwater supply. Per the report:

    “… [In] Chile, scientists are finding that the rapid rate of removal may be disrupting water availability in the surrounding desert. Beneath the Atacama Salt Flat, a Rhode Island-sized expanse of salts, a major source of lithium is locked in an underground reservoir. As mining projects there expand to meet skyrocketing demand, they have met resistance from Indigenous communities that surround the salt flat, and from regulators who are trying to understand a one-of-a-kind water cycle.”

    The process of mining lithium and the supply of water are intertwined. As brine — or saltwater — is extracted, the balance in the hydrogeology is offset, which according to the report, leaves less fresh water for people that live in a place where water is scarce to begin with. The report goes on:

    When brine is pumped out, the water table drops, and less water evaporates naturally from below the surface. Initially, the lower evaporation can compensate for the drop in water level from companies’ brine pumping. But when the water table drops below two meters deep, the evaporation rate hits zero — no more water can evaporate. At this point, Marazuela concludes, dropping evaporation rates can no longer counteract the effects of brine pumping. Freshwater pools may soon begin losing water.


    What confuses the issue is that the Chilean government classifies brine as a mineral to be mined, not a water resource to be preserved:

    “But in the government’s eyes, the brine is a mineral. It’s a point of contention that has fueled a conflict between local groups and companies over the importance of a water resource in one of the world’s driest deserts.
    With brine regulated as a mineral, the government retains ownership and allows private companies to manage their own operations.”

    It is made yet more confusing in that even if this brine was reclassified as water, it might make the situation worse, as Undark notes:

    If lithium brine were to be defined as water, local communities may not be able to buy it. The price of water is determined by a market, and in the Atacama desert, scarcity inflates prices.
    Diego Rivera-Salazar spent part of his childhood in an Indigenous community in Chile’s wetter south. There, the idea of buying and selling water clashed with community norms. “The land, the forests, the water, the airs — it belongs to the whole community,” he said. It’s not there for profit.. Now a hydrologist at the University of Desarrollo in the capital, Santiago, he believes those formative years led him to research the role of water in his country.
    When the new constitution is written, these kinds of property rights are likely to be at the center of debates, he says.

    “Los pescados no votan.
    So, the fishes doesn’t have the right to vote,” he said. “The fish or the trees or the animals, the nature — we don’t have any representation of the nature in the system.”]
    ΜOΛΩΝ ΛΑΒΕ


  2. #2
    Points: 39,935, Level: 48
    Level completed: 87%, Points required for next Level: 215
    Overall activity: 89.0%
    Achievements:
    1 year registered25000 Experience PointsSocial
    carolina73's Avatar Senior Member
    Karma
    12501
    Join Date
    Sep 2019
    Posts
    15,858
    Points
    39,935
    Level
    48
    Thanks Given
    13,050
    Thanked 12,493x in 8,041 Posts
    Mentioned
    66 Post(s)
    Tagged
    0 Thread(s)
    Non Lithium? Can you point to your other post. I know there are multiple technologies being looked at.

  3. #3
    Original Ranter
    Points: 641,816, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 100.0%
    Achievements:
    SocialCreated Album picturesOverdrive50000 Experience PointsVeteran
    Awards:
    Posting Award
    Peter1469's Avatar Advisor
    Karma
    454492
    Join Date
    Jun 2011
    Location
    NOVA
    Posts
    189,766
    Points
    641,816
    Level
    100
    Thanks Given
    122,016
    Thanked 105,476x in 68,956 Posts
    Mentioned
    2367 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by carolina73 View Post
    Non Lithium? Can you point to your other post. I know there are multiple technologies being looked at.
    I don't see it in the Science/tech thread. I can't remember the components. Here are some other articles.

    Graphene Batteries Could Be a Gamechanger



    ΜOΛΩΝ ΛΑΒΕ


+ Reply to Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts