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نانوالکتروشیمی Nanoelectrochemistry - کمبود آب شیرین، مشکل جدی قرن حاضر- نانوتکنولوزی و تصفیه آب
نانوالکتروشیمی Nanoelectrochemistry
Dr. Ramin M.A.Tehrani

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کمبود آب شیرین، مشکل جدی قرن حاضر- نانوتکنولوزی و تصفیه آب

باید بدانیم : از حدود ۱ ٪ منابع آب شیرین موجود در سطح زمین، تنها کمتر از ۰.۰۸ آن قابل دسترس است. به عبارتی دیگر، اگر کل آب شیرین موجود در سطح زمین را در یک مخزن ۵ لیتری نگهداری شده تصور کنیم ،تنها به اندازه یک قاشق چایخوری که کاملا نیز پر نمی باشد ، آب شیرین قابل استفاده در دسترس بشر می باشد.

طبق بررسی های به عمل آمده با توجه به نرخ رشد جمعیت، پیش بینی می شود بین ۲.۷ تا ۳.۲ بیلیون نفر مردم دنیا تا سال  ۲۰۲۵ میلادی در معرض کمبود یا مضیقه آب قرار خواهند گرفت. لذا کمبود آب آشامیدنی یک مشکل جدی و غیرقابل انکار برای همه مردمان قرن حاضر می باشد که نیازمند یافتن راه حل های اساسی ازسوی کارشناسان و متخصصان جهت استفاده مجدد آب و همچنین مدیریت بهتر همین منابع محدود آب درتمام کشورها می باشد.


 در حال حاضر استفاده از فن اوری نانو (نانوتکنولوژی) به جهت حل این معضل، نظر بسیاری از پژوهشگران و کارشناسان را به خود جلب کرده است. برای نمونه می توان از بکارگیری نانو فیلترها، نانو غشاها و نانو فتو کاتالیست ها درتصفیه آب و فاضلاب اشاره نمود.

مقالات متعددی در زمینه استفاده از کربن نانوتیوب ها، نانوذرات فلزی یا اکسید فلزی مانند آهن یا اکسید آهن، نانو کامپوزیت های پلیمری، نانو بیوپلیمرها، نانوذرات نقره وتیتانیوم دی اکسید (فتو کاتالیست ها) و ... در تصفیه، شناسایی (آلودگی های ناشی از مواد آلی و فلزات سنگین) و گند زذایی آب و فاضلاب صنعتی و خانگی گزارش شده است.

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