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    Wyświetlanie 1-4 z 4
    Tytuł:
    Does Tofu Wastewater Conversions Nutrient Increase the Content of the Chlorella pyrenoidosa?
    Autorzy:
    Musa, Muhammad
    Arsad, Sulastri
    Sari, Luthfiana Aprilianita
    Lusiana, Evellin Dewi
    Kasitowati, Rarasrum Dyah
    Yulinda, Elvana Nur
    Nadhira, Tara
    Cahyani, Devi
    Powiązania:
    https://bibliotekanauki.pl/articles/1839091.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    carbohydrate
    lipid
    microalgae
    organic wastewater
    protein
    Opis:
    This study aims to analyze the lipid, carbohydrate and protein content of Chlorella pyrenoidosa after being treated with the tofu wastewater. The method used in this study was an experimental method with 4 treatments and 3 replications. The treatment was performed by administering different concentrations of the tofu wastewater to the C. pyrenoidosa. The concentrations used were 10%, 15% and 20%. Determination of these concentrations was based on the preliminary test. The main parameters observed were the lipid, carbohydrate and protein content of C. pyrenoidosa and the supporting parameters were the growth rate, doubling time and characteristics of the tofu wastewater. The study was conducted for 8 days using the batch culture method. In the exponential phase, the microalgae were harvested and then their contents were analyzed. The data obtained were analyzed using MS Office Excel 2016. The highest content of lipid, carbohydrate and protein of C. pyrenoidosa was in the treatment of 20% tofu wastewater, reaching 1.56%; 28.92%; and 28.92%, respectively. Meanwhile, the highest growth rate and the smallest doubling time in the treatment of 20% tofu wastewater accounted for 0.8264 day-1 and 0.0349 hours-1. Moreover, the rates of BOD and TSS of the tofu wastewater at the end of the study decreased. It can be concluded that administering different concentrations of the tofu wastewater can affect the lipid, carbohydrate and protein content of C. pyrenoidosa. It was suggested that further research is needed to conduct semi-continuous cultivation of C. pyrenoidosa using a higher density so that the results obtained can be optimized.
    Źródło:
    Journal of Ecological Engineering; 2021, 22, 2; 70-76
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phycoremediation of mercury in the aquatic environment
    Autorzy:
    Musa, Muhammad
    Arsad, Sulastri
    Kilawati, Yuni
    Hartiono, Robroy Freebela
    Fajrin, Ilyasa
    Sari, Luthfiana Aprilianita.
    Prasetiya, Fiddy Semba
    Powiązania:
    https://bibliotekanauki.pl/articles/2032909.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    mercury
    heavy metals
    Spirulina maxima
    Nannochloropsis oculata
    Chlorella vulgaris
    Porphyridium cruentum
    rtęć
    metale ciężkie
    Opis:
    Phycoremediation refers to the technology of using microalgae to reduce pollutants in the aquatic environment. The purpose of this study was to analyze the reduction of mercury heavy metal in the media by using several species of microalgae such as Spirulina maxima, Nannochloropsis oculata, Chlorella vulgaris, and Porphyridium cruentum. The algae were exposed to mercury during eight days of cultivation. A randomized design was set with three different concentrations of mercury, namely 1, 3, and 5 mg/dm3, with three replications for each concentration. The initial concentration of microalgae was set to 10 000 cells/cm3 for S. maxima and N. oculata, while the concentration for C. vulgaris and P. cruentum was set to 100 000 cells/cm3. The concentration of mercury was measured at the beginning (1st day), the middle (4th day), and the end of microalgae cultivation (8th day) by using the atomic absorption spectroscopy (AAS) tool. The result demonstrated a reduction of mercury concentration during the experiment in all experimental media, where the highest reduction was found at 1 mg/dm3 (p < 0.05). In conclusion, microalgae have their limited ability to absorb and adsorb heavy metals. Therefore, the utilization of low-concentration microalgae on reducing heavy metal such mercury is recommended and merits further investigation.
    Źródło:
    Environment Protection Engineering; 2020, 46, 4; 69-76
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Different Additions of Carbon Dioxide on Growth, Lipids, Carotenoids and Chlorophyll-a of Chaetoceros calcitrans
    Autorzy:
    Amaliandini, Esza Rezky
    Nashrullah, Syarif
    Larasati, Anastasya Dewi
    Taufan, Fajar
    Sari, Luthfiana Aprilianita
    Dewi, Nina Nurmalia
    Arsad, Sulastri
    Musa, Nadirah
    Powiązania:
    https://bibliotekanauki.pl/articles/2202339.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    sustainable fisheries
    marine
    water quality
    pollution
    air
    microalgae
    plankton
    Opis:
    Global warming gives phytoplankton a significant role in reducing carbon. C. calcitras is a phytoplankton which utilizes carbon dioxide for growth and the formation of secondary metabolites in order to survive. The purpose of this study was to determine the effect of differences in duration on growth, lipid content, carotenoids and chlorophyll-a in C. calcitrans and to determine the optimal duration. An experimental method with statistical analysis using ANOVA was used in this study. The treatments implemented were the addition of carbon dioxide for 0, 2, 4, 6, 8, 10, 12, and 14 minutes with a volume of carbon dioxide addition of 3 bps. The results showed that the addition of carbon dioxide had a significant effect (P<0.05) on the value of lipids, growth, carotenoids and chlorophyll-a. The highest density value was obtained in Treatment for 2 minutes to increase growth with the highest total value of 2,927,500 cells/ml. The best treatment to increase lipids was Treatment for 12 minutes with lipid content of 63.33% and lipid productivity of 1.82 mg/l/day. The best treatment to increase carotenoid content was Treatment for 4 minutes with carotenoid content of 2.20 g/mL and chlorophyll-a content of 1.4431 g/mL. Optimal treatment differences to obtain the highest value of each parameter differ from each other, depending on the synthesis and physiological processes of C. calcitrans.
    Źródło:
    Journal of Ecological Engineering; 2023, 24, 1; 289--298
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Monitoring of Phytoplankton Abundance and Chlorophyll-a Content in the Estuary of Banjar Kemuning River, Sidoarjo Regency, East Java
    Autorzy:
    Al Diana, Nabila Zahro
    Sari, Luthfiana Aprilianita
    Arsad, Sulastri
    Pursetyo, Kustiawan Tri
    Cahyoko, Yudi
    Powiązania:
    https://bibliotekanauki.pl/articles/1839560.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    marine
    blue water
    ecological footprint
    pollution
    water quality
    Opis:
    Estuaries are coastal areas that have a fairly high fertility rate. This region can be said to be fertile because it is influenced by such physical factors as temperature, turbidity, light, and current as well as such chemical factors as salinity, dissolved oxygen, pH, and nutrient content. The estuary of the Banjar Kemuning River is a coastal area with a lot of human activities, and it is close to the mainland, causing the change in the nutrient content in the waters. The nutrient content in the waters is closely related to the phytoplankton abundance, as the higher the nutrient content in the waters, the greater the phytoplankton abundance and the chlorophyll-a content. The level of chlorophyll-a content in the waters can indirectly be used as an indicator of the phytoplankton abundance, which can determine the level of fertility of these waters. The purpose of this study was to determine the relationship between the phytoplankton abundance and the chlorophyll-a content in the estuary of the Banjar Kemuning River. This study is observational research with data analysis using linear regression, simple correlation (Pearson), and ANOVA. In addition, the data collection was carried out by purposive random sampling at predetermined points of stations. The results of this study indicated that the phytoplankton abundance and the chlorophyll-a content at the estuary of Banjar Kemuning River during different months were significantly different (P < 0.05). The average phytoplankton abundance during the study was 19,256 cells/L, 19,044 cells/L, and 22,613 cells/L, while the average chlorophyll-a content during the study was 0.958 µg/L, 0.998 µg/L, and 1.167 µg/L. The conclusion was drawn that there is a difference between the phytoplankton abundance and the chlorophyll-a content each month and classified into high correlation.
    Źródło:
    Journal of Ecological Engineering; 2021, 22, 1; 29-35
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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