Efficiency of microalgae cultures for nutrient removal from domestic wastewater
- سال انتشار: 1401
- محل انتشار: فصلنامه پیشرفت ها در فناوری محیط زیست، دوره: 8، شماره: 1
- کد COI اختصاصی: JR_AET-8-1_006
- زبان مقاله: انگلیسی
- تعداد مشاهده: 240
نویسندگان
Professional School of Environmental Engineering, Faculty of Environmental, Geographic and Ecotourism Engineering, Universidad Nacional Federico Villarreal, Lima, Perú.
Universidad Nacional Federico Villarreal, Lima, Perú.
Instituto del Mar del Perú, Lima, Perú.
Universidad Científica del Sur, Lima, Perú.
Instituto del Mar del Perú, Lima, Perú.
چکیده
Domestic wastewaters are one of the main sources of contamination and diseases. However, they can be treated and potentially reused if certain organic and inorganic compounds and molecules are eliminated. Novel environmentally friendly proposals are available, such as the use of bioremediation mediated by microalgae capable of efficiently upcycling different quantities of phosphates and nitrates. Thus, in the present study, we evaluated the consumption capacity of nitrates and phosphates present in samples of domestic wastewater by cultures of Chlorella sp. and Desmodesmus sp., two microalgae with nutrient removing abilities, to propose novel wastewater treatment alternatives. For this purpose, we assessed the microalgae growth in domestic wastewater, cultured using the batch system, under greenhouse conditions by reading the wavelength and obtaining the cell density using a multiparameter photometer and two equations for each type of microalgae. Then, the rate and mean percentage of nitrate and phosphate removal were obtained and compared using two previously reported equations applied in similar culture conditions. Both microalgae grew in wastewater samples mostly by day three to four, showing similar growth tendencies without alterations and having a progressive increase in cellular density. Nitrate concentrations in all experimental groups were reduced to up to ۹۰% on the fourth day; the initial phosphate concentration of ۳۰.۰ mg/L was reduced to ۳.۵ ± ۲.۱ mg/L with the Desmodesmus sp. treatment and to ۹.۲ ± ۱.۰ mg/L in the Chlorella sp. group. Desmodesmus sp. was the most efficient in the consumption of nitrates and phosphates, obtaining ۹۶.۵ ± ۸.۹۱ % and ۸۸.۳ ± ۴.۲۹ % of removal, respectively, while Chlorella sp. obtained ۹۵.۰ ± ۸.۰% and ۶۹.۳ ± ۲.۸%. Likewise, representative values of removal were obtained with the targets used in the laboratory tests.کلیدواژه ها
Nitrate, Phosphate, bioreactor, Wastewater treatmentاطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.