مهندسی شیمی ایران

مهندسی شیمی ایران

تأثیر محلول رودامین 6G به‌عنوان تبدیل‌کنندۀ طیفی نور بر رشد ریزجلبک کلرلا

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشیار مهندسی شیمی، دانشگاه بجنورد
2 دانشجوی دکتری مهندسی شیمی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران
3 استادیار مهندسی شیمی، دانشگاه بجنورد
چکیده
تبدیل طیفی نور و تولید فوتون­های مفیدتر برای فرایند فتوسنتز باعث افزایش رشد ریزاندام‌­های فتوسنتزکننده ازجمله ریزجلبک­ها می­شود. تحقیقات بسیاری در این زمینه انجام شدهاست؛ اما به‌علت هندسۀ سامانۀ کشت، محل قرارگیری منبع نور، بازنگرداندن فوتون­ها به داخل سامانه و غیره، ارزیابی دقیقی از تأثیر روش تبدیل طیفی بر رشد ریزجلبک­ها ارائه نشدهاست. در این پژوهش،با به‌کارگیری روشی دقیق­تر نسبتبه دیگر پژوهش­ها، تأثیر تبدیل طیفی نور بر میزان رشد ریزجلبک­ کلرلا ارزیابی شدهاست. بدین منظور یک لامپ LED سفید به‌عنوان منبع نور در داخل لولۀ­ شفاف دوجداره­ای قرار داده شد و فضای بین جداره­ها با محلول رودامین 6G، به‌عنوان تبدیل‌کنندۀ طیفی، پر شد. کل سامانۀ بالا در وسط یک فلاسک کشت، به‌منظور توزیع همگن نور، تعبیه شد. به‌علاوه سطح خارجی فلاسک کشت به‌منظور به حد اقل رسانیدن خروج فوتون­ها از فلاسک و بازگرداندن آن‌ها به داخل آن، با فویل آلومینیومی پوشش داده شد. نتایج نشان داد که در این روش بهره­وری زیست‌تودۀ ریزجلبک کلرلا تا 220% افزایش پیدا کرد. میزان این افزایش در شدت نورهای بیشتر تا حد قابل ‌توجهی کمتر بودهاست. به‌علاوه میزان استفادهاز فوتون‌های نور در تولید زیست‌توده نیز تا 4 برابر افزایش پیدا کرد.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

The Effect of Rhodamine 6G Solution as a Light Spectral Converter on the Growth of Microalgae Chlorella Sp.

نویسندگان English

H. Delavari Amrei 1
Zahra Khoobkar 2
Sh. Shafiei Amrei 3
1 Associate Professor of Chemical Engineering, University of Bojnord
2 Ph. D. Student of Chemical Engineering, Islamic Azad University, Science and Research Branch, Tehran, Iran
3 Assistant Professor of Chemical Engineering, University of Bojnord
چکیده English

Spectral conversion of light and production of more useful photons for the photosynthesis process increases the growth of photosynthetic microorganisms including microalgae. Many researches have been done in this field, but due to the geometry of the cultivation system, the location of the light source, the failure to return photons into the system, etc., an accurate assessment of the effect of the spectral conversion on the growth of microalgae has not been provided. In this research, the effect of spectral conversion on the growth rate of microalgae Chlorella sp. has been evaluated using a more accurate method than other studies. For this purpose, a white LED lamp was placed inside a double-walled transparent tube as a light source, and the space between the walls was filled with Rhodamine 6G solution as a spectral converter. The whole above system was placed in the middle of a culture flask, in order to distribute the light homogeneously. In addition, the outer surface of the culture flask was covered with aluminum foil in order to minimize the photons leaving the flask and returning them inside. The results showed that in this method, the biomass productivity of Chlorella sp. microalgae increased up to 220%. The amount of this increase in more light intensity has been significantly less. In addition, the amount of light photons used in biomass production also increased up to 4 times

کلیدواژه‌ها English

Microalgae
Spectral Conversion
Accurate Assessment
Growth
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