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Wyświetlanie 1-2 z 2
Tytuł:
Cadmium effects on growth and photosynthetic pigment content of Chaetoceros gracilis
Autorzy:
Ferdian, Ferdian
Hindarti, Dwi
Permana, Rega
Powiązania:
https://bibliotekanauki.pl/articles/1030841.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Carotenoids
Cell density
Chaetoceros gracilis
Chlorophyll-a
Toxicity test
Opis:
Cadmium wastewater released by human activities will eventually enter the aquatic environment. Living organism that lives around could potentially exposed by these cadmium, including C. gracilis which play a critical role as a primary producer. Cadmium can reduce the growth rate and pigment content in C. gracilis. Therefore, toxicity testing becomes important to do considering that C. gracilis has many benefits such as shrimp feed and have active compounds for antibacterial and biodiesel. Toxicity test was performed in 96-hours with a series of concentration 0, 0.56, 1.0, 1.8, 3.2, 5.6 mg/L. IC50 cadmium results in concentrated cell density and chlorophyll-a C. gracilis were 1.62 mg/L and 3.4 mg/L, while carotenoids were not in accordance with the contribution of cadmium. NOEC and cadmium LOEC to C. gracilis cell density were 0.56 mg/L and 1.0 mg/L.
Źródło:
World Scientific News; 2020, 145; 245-255
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coke and coal as reductants in manganese ore smelting: An experiment
Autorzy:
Suharno, Bambang
Nurjaman, Fajar
Rifki, Achmad
Elvin, Robby Krisnaldo
Putra, Alif Ardiansyah
Ferdian, Deni
Powiązania:
https://bibliotekanauki.pl/articles/127574.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Mineralogiczne
Tematy:
ferromanganese
manganese ore
coke
coal
Submerged Electric Arc Furnace (SAF)
Opis:
The effect of coke and bituminous coal on the reduction of medium-grade manganese ore in ferromanganese production was investigated. Charges of 30 kg medium grade manganese ore, 12 kg limestone and varied amounts of coke and coal were smelted in a Submerged Electric Arc Furnace (SAF) at temperatures of 1300°C to 1500°C. The composition of the ferromanganese and the slag were determined by X-Ray Fluorescence. It was found that using coke as a single reductant resulted in a 96% yield of ferromanganese which was higher than by using coal either as a single reductant or in a mixture of coal and coke. It was also found that using coke as a single reductant resulted in the lowest specific energy consumption. Using coal as reductant produced ferromanganese containing high sulfur and phosphorus.
Źródło:
Mineralogia; 2018, 49, 1/4; 35-45
1899-8291
1899-8526
Pojawia się w:
Mineralogia
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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