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Wyszukujesz frazę "Aliah, Hasniah" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Influence of Sieve Size on Calorific Value and Proximate Properties of Bio-Briquette Composites
Autorzy:
Aliah, Hasniah
Winarti, Indri
Iman, Ryan Nur
Setiawan, Andhy
Safarina, Rizky
Sawitri, Asti
Tematy:
bio-briquette
rice husk
coffee shell
calorific value
fixed carbon
Pokaż więcej
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:
https://bibliotekanauki.pl/articles/27323815.pdf  Link otwiera się w nowym oknie
Opis:
This work aimed to observe the influence of calorific value and proximate properties in the fabrication of rice husk (RH) and coffee shell (CS) briquettes composite. Rice and coffee husks contain cellulose, hemicellulose, and lignin. These contents are necessary for the adhesive to bind the briquette (amylose and amylopectin). The raw materials were carbonized at 400 °C for 60 minutes. Variations of sieving size (60, 80, and 100 mesh) and the composition ratio of raw material CS:RH were reviewed to study their effect. Tests of density, moisture content, volatile matter content, ash content, fixed carbon content, shatter index, combustion rate, and calorific value were carried out to determine the optimum composition. The results were obtained with the best quality at a particle size of 60 mesh with the highest calorific value of 17.422 MJ/kg. It showed that the briquettes have good quality and are comparable with the standard briquette.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of Optical and Electrochemical Properties of Solvent-Dependent Natural Dye Extracted from Rivina humilis L
Autorzy:
Aliah, Hasniah
Iman, Ryan N.
Sriwidati, Sriwidati
Sawitri, Asti
Setiawan, Andhy
Putri, Assa P. D.
Kurniawati, Fera
Tematy:
natural dye
betalains
Rivina humilis L.
DSSC
dye-sensitized solar cell
HOMO
higher occupied molecular orbital
LUMO
lower unoccupied molecular orbital
Pokaż więcej
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:
https://bibliotekanauki.pl/articles/59113763.pdf  Link otwiera się w nowym oknie
Opis:
This work aimed to study the natural dye extracted from Indonesian wild plants (Rivina humilis L.) using different solvents. The natural dye was extracted using the maceration method. Three different solvents, namely, aquades, acetone, and ethanol 96%, were used to extract natural dye from Rivina humilis L fruit. The absorbance spectra of the extracted dye were recorded using Ultraviolet-Visible (UV-Vis) spectroscopy. The different spectra of betalain pigment revealed the dye extract’s dependence on the solvent. The functional groups of the extracted dye were analyzed using Fourier transform infrared (FTIR) spectroscopy. The adherence of carbonyl and hydroxyl groups from FTIR spectra indicated that this dye could anchor to a semiconducting material, e.g., TiO2, which was commonly used in dye-sensitized solar cells (DSSC). The electrochemical properties of the extracted pigments were studied through higher occupied molecular orbital (HOMO) and lower unoccupied molecular orbital (LUMO) energy levels. Based on the results, the best performance to construct DSSC was achieved by natural dye adsorption with aquades solvent.
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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