سنتز سبز فیلتر نانوکامپوزیتی استات سلولز/ اکسید روی با عصاره گیاهی و کاربرد آن در حذف آلودگی منابع آبی

محورهای موضوعی : فصلنامه کیفیت و ماندگاری تولیدات کشاورزی و مواد غذایی

سهراب حاج محمدی ¹ , دادخدا غضنفری ² , عنایت الله شیخ حسینی ³ , ناهید رستاخیز ⁴ , حمیده اسدالله زاده ⁵

1 - دانشجوی دکتری ، گروه شیمی،,واحد کرمان، دانشگاه آزاد اسلامی، کرمان، ایران
2 - دانشیار، گروه شیمی، دانشگاه آزاد اسلامی کرمان، کرمان، ایران
3 - استادیار ،گروه شیمی، دانشگاه آزاد اسلامی کرمان، کرمان، ایران
4 - استادیار ،گروه شیمی، دانشگاه آزاد اسلامی کرمان، کرمان، ایران
5 - استادیار ،گروه شیمی، دانشگاه آزاد اسلامی کرمان، کرمان، ایران

تاریخ دریافت : 1401/10/19 تاریخ پذیرش : 1401/12/01 تاریخ انتشار : 1402/03/01

کلید واژه: استات سلولز, سنتز سبز, دافنه ماکروناتا, اکسید روی, نانو فیلتر,

چکیده مقاله :

منابع آبی جزو سرمایه های طبیعی هر کشوری به شمار می‌ایند. ‌لذا حفظ این منابع طبیعی از جمله چالش های مهم همه کشورها به شمار می‌اید. استفاده بیش از حد از مواد شیمیایی و صنعتی و ورود آنها به منابع آبی ، مشکلات فراوانی را برای این منابع به وجود آورده است. لذا ارائه روش‌های نوین در حذف آلاینده های آبی از اهمیت زیادی برخوردار است. روش سنتز سبز نانوذرات به علت دارا بودن ویژگی‌هایی مانند ایمنی بیشتر ،سازگاری با محیط زیست، سـاده و کم هزینه بودن مورد توجه زیاد واقع شده است. در این کار پژوهشی سنتز سبز نانوذرات اکسید روی با استفاده از گیاه دافنه ماکروناتا انجام شد و در تهیه نانو فیلتر استات سلولز/ اکسید روی مورد استفاده قرارگرفت. تصویر میکروسکوپ الکترونی از نانو فیلتر نشان می‌دهد میانگین اندازه قطر نانوالیاف در حدود 40 نانو متر و میانگین اندازه نانوذرات حدود 47 نانو متر می‌باشد. همچنین تاثیر این فیلتر در حذف رنگ متیل اورانژ از منابع آبی در شرایط مختلف غلظت رنگ، میزان جاذب و pH مورد بررسی قرار گرفت. نتایج نشان داد فیلتر نانوکامپوزیتی استات سلولز/ اکسید روی قادر به حذف حدود 90 درصد رنگ متیل اورانژ در شرایط بهینه می‌باشد. همچنین نتایج بررسی اثر ضد میکروبی این ساختار بر روی 4 نمونه باکتری بیماری زا شامل باسیلوس سرئوس و استافیلوکوس اپیدرمیس ، سالمونلا و اسینتو باکتر انجام شد. نتایج نشان داد بیشترین قطر هاله عدم رشد مربوط به باکتری های بیماری زای باسیلوس سرئوس و استافیلوکوس اپیدرمیس و حدود 22 میلی متر می‌باشد.

چکیده انگلیسی:

Water resources are among the natural capitals of every country, therefore, the preservation of these natural resources is one of the important challenges of all countries. Excessive use of chemical and industrial materials has created many problems for these sources. Therefore, providing new methods to remove water pollutants is very important. The method of green synthesis of nanoparticles has attracted a lot of attention due to its features such as greater safety, compatibility with the environment, simplicity, and low cost. In this research work, the green synthesis of zinc oxide nanoparticles was carried out using the Daphne macronata plant and it was used in the preparation of a cellulose acetate/zinc oxide filter. The electron microscope image of the nano filter shows that the average diameter of nanofibers is about 40 nanometers and the average size of nanoparticles is about 47 nanometers. Also, the effect of this filter in removing methyl orange dye from water sources was investigated in different conditions of dye concentration, amount of adsorbent, and pH. The results showed that the cellulose acetate/zinc oxide nanocomposite filter is able to remove about 90% of methyl orange color in optimal conditions. Also, the results of investigating the antimicrobial effect of this structure on 4 samples of pathogenic bacteria, including Bacillus cereus and Staphylococcus epidermis, Salmonella, and Acinetobacter were carried out. The results showed that the largest diameter of the halo of non-growth is related to the pathogenic bacteria Bacillus cereus and Staphylococcus epidermis and is about 22 mm

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