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Wyszukujesz frazę "Iqhrammullah, Muhammad" wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Heavy Metals in the Water, Sediment, and Fish Harvested from the Krueng Sabee River Aceh Province, Indonesia
Autorzy:
Nasir, Muhammad
Muchlisin, Zainal A.
Saiful, Saiful
Suhendrayatna, Suhendrayatna
Munira, Munira
Iqhrammullah, Muhammad
Powiązania:
https://bibliotekanauki.pl/articles/1955570.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
water quality
sediment
gold mine
fish
heavy metals
Krueng Sabee
Opis:
The pollution of rivers from human activities such as housing, markets, workshops, transportation, land cultivation, and industry has become an issue. The increasing contribution of heavy metals to pollution in rivers has a direct effect on the metal bioaccumulation in fish. Therefore, this study aimed to examine the concentrations of Cd, Cu, and Pb in the waters, sediment, and fish harvested from the Krueng Sabee River, Aceh Province, Indonesia. Furthermore, the water, sediment, and fish samples were collected from six locations representing the upstream and downstream regions of the river. Cd, Cu, and Pb were analyzed using Atomic Absorption Spectrophotometry (AAS). The results showed that Cd, Cu, and Pb were not detected in the water, while the concentration of Cd in the sediments ranges between 0.0544 to 0.2683 mg kg-1, Cu ranges between 4.4149 to 14.8160 mg kg-1, and Pb ranges between 0.9186–15.4954 mg kg-1. Therefore, Cd, Cu, and Pb in the water and sediment were below the quality standard, but these heavy metals in the fish sample met the threshold limit. The highest Cd concentration was reported in Tor soro (5.5591 mg kg-1), and the highest concentration of Cu was reported in Mugil cephalus (6.7021 mg kg-1), while the higher Pb concentration was reported in Cyclocheilichthys Apogon (0.0279 mg kg-1).
Źródło:
Journal of Ecological Engineering; 2021, 22, 9; 224-231
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of Mercury in Soil, Water, and Vegetable Fern in a Former Gold Mining Area – Evidence from Nagan Raya Regency, Aceh Province, Indonesia
Autorzy:
Nisah, Khairun
Muslem, Muslem
Ashari, Tengku Muhammad
Afkar, Majral
Iqhrammullah, Muhammad
Powiązania:
https://bibliotekanauki.pl/articles/2173338.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Aceh
artisanal gold mining
mercury
fern
Pityrogramma calometanos
Opis:
The mercury contamination associated with the former intense illegal gold mining activities is suspected in the watershed of Krueng Cot Satu, Nagan Raya Regency, Aceh Province, Indonesia. The aim of this study was to evaluate the mercury contamination residue in the water, soil, and vegetable fern (Pityrogramma calometanos (L)) The samples were collected from locations in the already closed artisanal gold mining sites. The sampling locations were purposively determined by considering their closeness to the previous gold mining activities sites. The content of mercury was analyzed using flow injection for atomic spectroscopy – atomic absorption spectroscopy. The method used was validated by linearity, Limit of Detection (LoD), Limit of Quantification (LoQ), Relative Standard Deviation (RSD), and recovery. The validation test showed that this method is well linear, sensitive, accurate, and precise with a correlation coefficient, LoD, LoQ, RSD and recovery of 0.9999, 0.0477 μg/L, 0.1447 μg/L, 2.96% and 95–105%, respectively. Herein, it was found that the concentrations of mercury contents in the water samples were below the detectable range. However, a high range of mercury concentration of 0.236 – 0.328 μg/g was found in soil, with the highest concentration obtained in the sample collected from the riverbank. The fern sample collected near the riverbank contained mercury in all its parts and concentrated in the root (0.408 μg/g in the leaves, 0.276 μg/g – stalks, and 9.994 μg/g – roots). Meanwhile, the absence of mercury contamination was obtained in the leaves and stalks of the fern samples collected far from the riverbank. The roots, however, were detected with mercury contamination with the highest concentration reaching 27.660 μg/g. Despite its disappearance in the water, mercury contamination residue from the former artisanal gold mining activities still could be traced in the soil and heavy metal accumulating plant – P. calometanos (L).
Źródło:
Journal of Ecological Engineering; 2022, 23, 8; 30--39
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tryptophan-Based Organoclay for Aqueous Naphthol Blue Black Removal – Preparation, Characterization, and Batch Adsorption Studies
Autorzy:
Julinawati, Julinawati
Febriani, Febriani
Mustafa, Irfan
Fathurrahmi, Fathurrahmi
Rahmi, Rahmi
Sheilatina, Sheilatina
Ahmad, Khairunnas
Puspita, Kana
Iqhrammullah, Muhammad
Powiązania:
https://bibliotekanauki.pl/articles/27323827.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
amino acids
bentonite
diazo dye
freundlich
Sips isotherm model
montmorillonite
textile wastewater
Opis:
To prevent the serious threat of textile wastewater, researchers have developed adsorption-based wastewater treatment using cheap, yet effective, adsorbent materials. Of which is natural bentonite, that has the advantages for adsorption due to its porous structure and functional groups but still suffers from its low affinity against anionic and hydrophilic azo dyes. Herein, we aimed of improving the affinity by amino acid tryptophan embedment into the locally isolated natural bentonite collected from Aceh Province, Indonesia. The prepared bentonite samples were characterized using Fourier transform infrared, X-ray diffraction, and scanning electron microscopy. Adsorptive removal was performed on naphthol blue black (NBB) in a batch system with variations of contact time, pH, and adsorbent dosage. The isotherm studies were carried out at optimum conditions (contact time=15 minutes; pH 1; adsorbent dosage=0.2 g) with several models including Langmuir, Freundlich, Sips, and Redlich-Peterson isotherm models. The characterization results revealed that the modification altered its functional group, crystallinity, and micro-surface morphology that add more benefits for adsorption. At optimum conditions, 99.2% NBB has been successfully removed from the aqueous solution. The isotherm studies suggested that the NBB adsorption onto the tryptophane-modified natural bentonite was dependent on Sips isotherm model (R2=0.999; root-mean-square-errors=1.11×10-4 mg/g).
Źródło:
Journal of Ecological Engineering; 2023, 24, 7; 274--284
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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