بررسی فعالیت اکسیدانی و بهینه‌سازی تولید آب فعال شده با پلاسمای سرد

نویسندگان
آزاده رنجبر ندامانی 1
علی تقوی 2
الهام رنجبر ندامانی 3
1 استادیار گروه مهندسی بیوسیستم، دانشکده مهندسی زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران، (a.ranjbar@sanru.ac.ir) - شماره تماس: 09111935264
2 دانشجوی کارشناسی ارشد فناوری‌های پس از برداشت، گروه مهندسی بیوسیستم، دانشکده مهندسی زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران
3 دکترای شیمی مواد غذایی، کارشناس تحقیق و توسعه کاله، آمل، ایران
10.22034/FSCT.22.161.215
چکیده
آب فعال شده با پلاسمای سرد به‌عنوان یک جایگزین غیرسمی و دوستدار محیط‌زیست معرفی و کارایی خود در برابر طیف گسترده­ای از عوامل بیماری­زا از جمله باکتری­ها، ویروس­ها و قارچ­ها را نشان داده است. در این پژوهش از آب شهری برای فعال‌سازی توسط دستگاه مولد پلاسمای سرد با استفاده از یک رآکتور پلاسما شامل الکترودهای مسی و فولادی، ولتاژ kV 20  جریان mA 3 با کمک هوای اتمسفر استفاده شد. برای تولید آب فعال شده، طرح آزمایشات توسط نرم‌افزار دیزاین اکسپرت ورژن 12 در قالب طرح باکس- بنکن با فاکتورهای زمان تیمار با پلاسما (0، 15 و 30 دقیقه)، سرعت تزریق هوا (m/s 5/0، 1 و 5/1) و دمای نگهداری آب فعال شده با پلاسمای سرد (℃ 20، 4 و 20-) اجرا شد. قبل از استفاده، ویژگی‌های آب از جمله میزان پراکسید هیدروژن، اکسیژن، سختی کل، ازن، نیترات، نیتریت و کلر اندازه‌گیری شد. این ویژگی‌ها طی مدت روزهای 1، 2، 3 و 6 نیز مورد آزمون قرار گرفتند. نتایج نشان دادند تمام فاکتورهای موردمطالعه بر نتایج مورد بررسی اثر معنادار داشتند. اثر متقابل این فاکتورهای نیز در برخی موارد اثر معنادار کاهشی و یا افزایش بر نتایج داشتند. به‌طورکلی مشخص شد دمای نگهداری محیط، زمان تیمار بیشتر با پلاسمای سرد، و سرعت هوای m/s 1 می‌تواند آب فعال با ویژگی‌های اکسیدانی بهتری را تهیه کند. شرایط بهینه تولید آب فعال شده نیز عبارت بود از زمان تیمار 5/23 دقیقه با پلاسمای سرد، سرعت هوای m/s 97/0 و دمای نگهداری ℃20.

 
کلیدواژه‌ها
آب فعال شده
پلاسمای سرد
دیزاین اکسپرت
پراکسید هیدروژن

موضوعات

عنوان مقاله English

Studying the Oxidant Activity and Optimization of Cold Plasma- Activated Water

نویسندگان English

Azadeh Ranjbar Nedamani 1
Ali Taghavi 2
Elham Ranjbar Nedamani 3
1 Assistant Professor, Biosystem Engineering Department, Sari Agricultural Science and Natural Resources University, Sari, Iran, (a.ranjbar@sanru.ac.ir)- Tel: +989111935264
2 M.Sc. Student of Post-Harvest Technology, Biosystem Engineering Department, Sari Agricultural Science and Natural Resources University, Sari, Iran
3 Ph.D. in Food Chemistry, Research and Development, Kalleh, Amol, Iran
چکیده English

Activated water with cold-plasma has emerged as a non-toxic and environmentally friendly alternative, demonstrating its efficiency against a wide range of pathogens, including bacteria, viruses, and fungi. In this study, tap water was activated using cold plasma generator, employing a plasma reactor consisting of copper and steel electrons, with a voltage of 20 kV and a current of 3 mA at atmospheric air. To produce and optimization of activated water, experimental designs were conducted using Design Expert software version 12, following a Box-Behnken design. The factors were treatment time (0, 15, and 30 min), air injection velocity (0.5, 1, and 1.5 m/s), and storeage temperature (20, 4, and -20 ℃). The characteristics of water, including hydrogen peroxide concentration, oxygen levels, total hardness, ozone, nitrate, nitrite, and chlorine, were measured at the days of 0, 1, 2, 3, and 6 to investigate the activation during storage period. The results indicated that all studied factors had a significant effect on the outcomes examined. The interaction effects of these factors also exhibited significant decreasing impact on the results in certain cases. Finally, it was determined that the storage temperature of the environment, prolonged treatment time with cold-plasma, and an air velocity of 1 m/s could yield activated water with superior oxidative properties. The optimized condition for producing activated water was identified as a treatment time of 23.5 min, 0.97 m/s air velocity, and storage temperature of 20℃.



 

کلیدواژه‌ها English

Activated water
cold plasma
design expert
Hydrogen peroxide
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