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  • Category: Miscellaneous

    Sea water can be made drinkable by a new technology

    A new water filter uses a type of Graphene known as Graphair made from Soya bean Oil which can filter polluted sea water. The filter was developed by Commonwealth Scientific and Industrial Research Organization (CSIRO).The microscopic Nano channels in this wonder material enable water particles to pass through and block larger pollutant molecules.
    As people are struggling with shortage of safe and clean drinking water, diseases associated with inadequate water supply, sanitation and hygiene are on the rise.
    I think, this is welcome news and these types of technologies are to be developed.
    But, if we start using these types of desalination at industrial scale we have to worry about the byproduct released back into the ocean in the form of high concentration of salts and other pollutants.
    What you say?
  • #626677
    Generally, water treatment involves the removal of solids, bacteria, algae and inorganic compounds. Used water can be converted into environmentally acceptable water through various treatments.Wastewater treatments usually consist of three levels: a primary (mechanical) level, in which about 50-60% of the solids are removed from raw sewage by screening and sedimentation, a secondary (biological) treatment level in which dissolved organic matter that escaped primary treatment is removed by microbes that consume it as food and convert it into carbon dioxide, water and energy. The tertiary treatment removes any impurities that are left, producing an effluent of almost drinking-water quality. But the main problem here is the effluent waste from these treatments will have further concentrations of these impurities. What to do with these effects is the questions mark here. However, the invention is a good step in making drinking water available to all. Separating the wastewater generated in this process and managing them is the question in all these cases.
    always confident

  • #626684
    This is a great news that seawater can be made drinkable with this filter. Actually seawater contains high amount of salt about 30 grams per litre and if this technique can reduce that to drinkable limit then this method is definitely a welcome move.

    Only thing is that we should be able to clean the pollutants before throwing the waste products back to sea or to nearby fields.

    Knowledge is power.

  • #626692
    Great to know that now a new technology through which new water filter uses a type of Graphene known as Graphair made from Soya bean Oil which can filter polluted sea water. In the world it is surrounded by much sea water and less clean water. This new technology can mitigate the water woes to much extent. Especially Tamil Nadu is fighting with Karnataka for the extra cauvery water it lost to that state and with this technology the water problem faced by Chennai metro can be fully solved. Moreover recently the Israel Prime Minister has gifted a van which can clean the salt water to drinkable water.
    K Mohan
    'Idhuvum Kadandhu Pogum "
    Even this challenging situation would ease

  • #626693
    It is really a good information as scarcity of drinking water is increasing day by day. In our nearby areas drinking water is supplied after a 1weak or sometimes after 15 days. I think many villages face this scarcity of water. There are more than 75% of water on Earth but drinking water is not enough. So, this technique would play a revolutionary role and would be a revolutionary technology.
    Honesty is the best policy.

  • #626698
    It is very interesting that sea water can be converted into drinking water. There are many countries which are facing a scarcity of water. In many countries, the government using some digital boards to let the people know about the available of drinking water. By this the people get awareness about scarcity of water and using water.

    Glad to listen that the sea water can be convertible, but there are so many people who are wasting water, contaminating rivers even if convert the water into drinking water the people used to waste it and contaminate the rivers.
    In my opinion, let the people know about the importance of water and rivers. the awareness must come in the people about the water and its scarcity.

    I have seen the people of different states are fighting for water or river. And this technology can solve that problem if it is implement by the government.

    "Life's Beauty is Inseparable from its Fragility ".

    Sohail shaik...

  • #626814
    This brings memories. Last year I gave a brief presentation about graphene in my college.
    We had methods of desalination for a long time. They were just not commercial enough.
    I don't know how commercial this method is .

    Well...oceans have their ecological way of handling salts. So we needn't worry much. Moreover, as you claimed, the waters were polluted salt waters right?
    So no worries about harming of the already absent life in these waters.

    I think the utmost concern is, the production of enough graphair.
    We cannot rely on any biological product as they're unpredictable.
    We need to find ways of synthesizing graphair.
    Only then can we imagine about popularizing and commercialization of this process.

    The stronger a light shines the darker are the shadows around it.

  • #626816
    A good step forward, many experts opine that the future wars in the world will be based on religion, land, and water, not money. We are seeing this already. The southern state of Karnataka has been having inter-state disputes with TamilNadu and Goa. Few cities in the world are already reeling under acute water shortage.

    Such innovations would come as good news to them. We need to find ways to use this on a larger scale at an affordable price. We have moved from a simple muslin cloth used to filter physical impurities to water candle to UV filter and now to Graphair based membrane to filter sea water. The related reports mention that it is faster and cheaper.
    The countries should quickly link and start investing to bring this technology from the lab to the real world. Hope we can start using it at least for non-drinking purposes first and then move on to drinking water.

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