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Wyszukujesz frazę "Green Shell" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Utilization of activated carbon of various charcoal types as absorbent in green shellfish (Perna viridis, Linnaeus, 1758) contaminated by lead heavy metal
Autorzy:
Yustindriarini, Vidya
Hasan, Zahidah
Hamdani, Herman
Sahidin, Asep
Powiązania:
https://bibliotekanauki.pl/articles/1076152.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Activated Carbon
Green Shell
Lead
Perna viridis
Skeletonema
Opis:
Aims of the research are to determine the type of activated carbon with high absorption rate in absorbing heavy metals of lead in green shells. This research used experimental method with complete randomized design then analyzed used analysis of variance and duncan test to see the decrease of lead in green shells by using different charcoal filters. The results showed that the highest decrease in green shell was by using coconut shell activated filter are 0,28 with a decrease percentage of 36,51%. The best lead decrease in water maintenance coconut shell activated filter treatment are 0,33 ppm. The coconut shell activated charcoal has a low ash content compared to other types and large pore charcoal size. Factors that supporting the metal absorption by charcoal include ash content on charcoal, charcoal pores, carbon concentration and pH concentration. Water quality measurements were measured in the morning and evening as supporting parameters in the study. Water quality measurements are in a range that can still be tolerated by green shells. Based on these results it can be concluded that the use of coconut shell activated charcoal is the best type of charcoal in lowering lead in green shells.
Źródło:
World Scientific News; 2019, 116; 157-168
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modification of Calcium Oxide from Green Mussel Shell with Iron Oxide as a Potential Adsorbent for the Removal of Iron and Manganese Ions from Acid Mine Drainage
Autorzy:
Purwaningrum, Widia
Hasanudin, Hasanudin
Rachmat, Addy
Riyanti, Fahma
Hariani, Poedji Loekitowati
Powiązania:
https://bibliotekanauki.pl/articles/2202252.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
CaO/Fe3O4
green mussel shell
adsorption
iron
manganese
acid mine drainage
Opis:
Acid mine drainage (AMD) has the characteristics of high heavy metal ion content and low pH. This study aimed to synthesize the CaO/Fe3O4 composite for the adsorption of iron and manganese ions from acid mine drainage. CaO was synthesized from the shells of green mussels (Perna viridis). The CaO/ Fe3O4 composites were characterized using XRD, BET surface area, SEM-EDS, and VSM. The functional groups of the composite before and after adsorption were analyzed using FTIR. The adsorption of Fe(II), Fe(III), and Mn(II) ions was carried out with the batch method to determine the effect of pH, contact time, and initial concentration of metal ions. The CaO/ Fe3O4 composite has magnetic properties, as indicated by the saturation magnetization value of 65.49 emu/g. The Langmuir and Freundlich isotherm models were used to describe the adsorption isotherm of the composite for Fe(II), Fe(III), and Mn(II) ions. Investigations were also conducted on adsorption kinetics, including pseudo-first-order and pseudo-second-order, as well as adsorption thermodynamics comprising free energy, enthalpy, and entropy. Pseudo-first-order and Langmuir isotherms are suitable to describe the adsorption of Fe(II), Fe(III), and Mn(II) ions with adsorption capacities of Fe(III) > Fe(II) > Mn(II). Moreover, the adsorption of all ions using the composite occurred spontaneously. The removal effectiveness for Fe and Mn ions from AMD using CaO/ Fe3O4 composite, reached 90.41 and 97.59%, respectively, in volume 100 mL AMD, composite mass 0.4 g, and a contact time of 60 minutes.
Źródło:
Journal of Ecological Engineering; 2022, 23, 11; 188--201
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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