للمخلفات البلاستيكية اعادة التدوير.

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Presentation transcript:

للمخلفات البلاستيكية اعادة التدوير

نتناول في هذه المحاضرة :- ماهية المواد البلاستيكية . تصنيف المواد البلاستيكية . عملية اعادة تدوير المخلفات البلاستيكية.

المواد البلاستيكية مواد خفيفة الوزن. تعدد الالوان الواسع . عازلة للكهرباء. مقاومة للصدأ والتأكل.

تصنيف المواد البلاستيكية

الاضرار الناتجة من مخلفات المواد البلاستيكية اولآ: المخلفات البلاستيكية بطيئة التحلل. ثانيآ: حرق المخلفات البلاستيكية يولد غازات خطيرة.

عملية اعادة التدوير Recycling

فيديو يعرض اعادة التدوير في بنغلادش

رموز اعادة تدوير المخلفات البلاستيكية

PET : Poly etheylene terpthalate. ويستحدم لعلب الماء والعصير والصودا.

HDPE: High density poly ethylene. ويستخدم لعلب الشامبو والمنظفات ولعب الاطفال.

PVC or V: Poly vinyl chloride ويستخدم لصناعة خراطيم المياه وانابيب الصرف الصحي وتغليف الاسلاك الكهربائية

LDPE: Low density poly ethylene. ويستخدم لصناعة علب السيديات وبعض القوارير واكياس التسوق.

PP: Poly propylene. ويستخدم لصناعة حوافظ الطعام والصحون وعلب الادوية.

PS:Poly styrene ويستخدم لصناعة علب البرغر واكواب الشاي.

Other plastics هدا النوع لايقع تحت اي تصنيف من الانواع الست السابقة وقد يكون عبارة عن خليط منها .وتستخدم لصناعة قوارير الماء الكبيرة واغلفة الاجهزة الالكترونية.

مجالات استخدام المنتجات البلاستيكية المصنعة من اعادة تدوير المخلفات البلاستيكية. عبوات للمواد والسلع غير الغدائية مثل الشحوم والمنظفات الصناعية والمبيدات. اكياس تعبئة القمامة وصناديق جمعها. اعمدة اضاءة الشوارع والمطارات واللوحات الارشادية للطرق. انابيب نقل مخلفات الصرف الصناعي.

صور لبعض المنتجات المصنعة من اعادة تدوير المخلفات البلاستيكية

المحافظة على موارد المواد والطاقة . اهمية عملية اعادة التدوير تساهم اعادة التدوير في المحافظة على البيئة والتقليل من التلوث من خلال دورها في : المحافظة على موارد المواد والطاقة . تقليل الاستهلاك من خلال اطالة عمر المنتوج. توفير الطاقة من خلال التقليل من العمليات الانتاجية . حماية الاراضي السكنية من استخدامها كمكبات لرمي القمامة من خلال التقليل من المخلفات.

المصادر كتاب كيمياء اللدائن تأليف الدكتور اكرم عزيز محمد كتاب البلاستيك وتأثيراته الصحية والبيئية تأليف الدكتور مجدي مطاوع. htt:\\ar.wikipedia.org