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The Characterization of Oyster Shell (Crassostrea gigas) as Adsorbent in The Removal of Cr(VI) Ions. A Study of NaOH and H2SO4 Activation Effect Lia Handayani; Cut Rahmawati; Nurhayati Nurhayati; Yayuk Astuti; Adi Darmawan
Elkawnie: Journal of Islamic Science and Technology Vol 6, No 1 (2020)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v6i1.5543

Abstract : Oyster shell as one of the highest bio-waste in Alue Naga Aceh Besar District, Indonesia, was used as an adsorbent to remove a heavy metal Cr (VI) ion. The study was started by calcinating oyster shells at a high temperature of 800 ºC for 3 hours. The effect of various acid (H2SO4) and base (NaOH) activator was studied using characterization and adsorption experiments. The characterization obtained the sample activated by 10% NaOH (Na10-ACT) and 10% H2SO4 (H10-ACT) had the highest surface area which had 14.23 m2/g, 10.77 m2/g, respectively. Furthermore, the adsorption experiments confirmed the highest surface area by showing the highest Cr (IV) ion removal of 57.66%, 70.7%, respectively. The further investigation using X-ray fluorescence (XRF) determined that the Na10-ACT adsorbent has a better composition compared to the H10-ACT due to its high purities.Abstrak : Cangkang tiram sebagai salah satu bio-limbah padat di Desa Alue Naga Kabupaten Aceh Besar, digunakan sebagai adsorben untuk menghilangkan ion logam berat Cr (IV). Penelitian ini diawali dengan mengkalsinasi cangkang tiram pada temperatur tinggi 800ºC selama tiga jam. Pengaruh penambahan aktivator asam (H2SO4) dan basa (NaOH) juga dipelajari melalui karakterisasi dan pengujian adsorpsi. Hasil karakterisasi menunjukkan sampel yang diaktivasi dengan 10% NaOH (Na10-ACT) dan 10% H2SO4 (H10-ACT) memiliki luas permukaan tertinggi yaitu 14,23 m2/g, 10,77 m2/g, masing-masing. Lebih lanjut, pengujian adsorpsi juga mendukung luas permukaan yang tinggi dengan menghilangkan ion Cr (IV) sebesar 57,66%, 70,7%, masing-masing. Investigasi melalui analisa XRF menyimpulkan bahwa Na10-ACT memiliki komposisi yang lebih baik dibanding H10-ACT karena memiliki kemurnian yang tinggi.

The Characterization of Oyster Shell (Crassostrea gigas) as Adsorbent in The Removal of Cr(VI) Ions. A Study of NaOH and H2SO4 Activation Effect Lia Handayani; Cut Rahmawati; Nurhayati Nurhayati; Yayuk Astuti; Adi Darmawan
Elkawnie Vol. 6 No. 1 (2020)
Publisher : Faculty of Science and Technology Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v6i1.5543

Abstract : Oyster shell as one of the highest bio-waste in Alue Naga Aceh Besar District, Indonesia, was used as an adsorbent to remove a heavy metal Cr (VI) ion. The study was started by calcinating oyster shells at a high temperature of 800 ºC for 3 hours. The effect of various acid (H2SO4) and base (NaOH) activator was studied using characterization and adsorption experiments. The characterization obtained the sample activated by 10% NaOH (Na10-ACT) and 10% H2SO4 (H10-ACT) had the highest surface area which had 14.23 m2/g, 10.77 m2/g, respectively. Furthermore, the adsorption experiments confirmed the highest surface area by showing the highest Cr (IV) ion removal of 57.66%, 70.7%, respectively. The further investigation using X-ray fluorescence (XRF) determined that the Na10-ACT adsorbent has a better composition compared to the H10-ACT due to its high purities.Abstrak : Cangkang tiram sebagai salah satu bio-limbah padat di Desa Alue Naga Kabupaten Aceh Besar, digunakan sebagai adsorben untuk menghilangkan ion logam berat Cr (IV). Penelitian ini diawali dengan mengkalsinasi cangkang tiram pada temperatur tinggi 800ºC selama tiga jam. Pengaruh penambahan aktivator asam (H2SO4) dan basa (NaOH) juga dipelajari melalui karakterisasi dan pengujian adsorpsi. Hasil karakterisasi menunjukkan sampel yang diaktivasi dengan 10% NaOH (Na10-ACT) dan 10% H2SO4 (H10-ACT) memiliki luas permukaan tertinggi yaitu 14,23 m2/g, 10,77 m2/g, masing-masing. Lebih lanjut, pengujian adsorpsi juga mendukung luas permukaan yang tinggi dengan menghilangkan ion Cr (IV) sebesar 57,66%, 70,7%, masing-masing. Investigasi melalui analisa XRF menyimpulkan bahwa Na10-ACT memiliki komposisi yang lebih baik dibanding H10-ACT karena memiliki kemurnian yang tinggi.

The effectiveness of activated charcoal in feed on histopathological features of the spleen of tilapia (Oreochromis niloticus) exposed to organophosphate insecticides Nurhayati Nurhayati; Shahibul Auzan; Lia Handayani; Azwar Thaib; T M Haja Almuqaramah; Faisal Syahputra
Acta Aquatica: Aquatic Sciences Journal Vol. 10 No. 1 (2023): Acta Aquatica: Aquatic Sciences Journal
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v1i2.9223

Excessive and periodic use of insecticides has a negative impact on aquatic areas and the biota in them. Pesticides that accumulate in the aquatic environment affect the life non target organisms such as fish. In addition, pesticides can cause damage to the gills, liver, intestines and spleen. This organ plays an important role in the immune system. Thus, an alternative is needed to overcome this problem, one of which is the addition of activated charcoal in the feed. The aims of study to determine the effect of the use of activated charcoal in feed on the histopathological description of the spleen of tilapia exposed to organophosphate pesticides. The study was conducted experimentally by applying 4 treatments and 2 replications as the treatments used included T1 (0% activated charcoal); T2 (1% activated charcoal); T3 (2% activated charcoal); T4 (3% activated charcoal). The test fish used were tilapia measuring 7 ± 0,4 cm long with a stocking density of 30 fish/container. Parameters observed were histopathological description of tilapia spleen at pre exposure, post exposure and after administration of activated charcoal. The results of observations of tissue damage were analyzed descriptively qualitatively and presented in the form of images. The results showed that the addition of 2% activated charcoal (T3) in the feed was able to reduce damage to the spleen due to exposure to organophosphate insecticides. Keywords: Activated charcoal; feed; insecticide; spleen

Growth performance of gouramy (Osphronemus gouramy) with the addition of activated charcoal from tuna (Thunnus sp) bone waste in feed Suraiya Nazlia; Nurhayati Nurhayati; Ade Maya Riski; Ika Rezvani Aprita; Mustafa Sabri; Safrida Afriana; Suri Purnama Febri
Acta Aquatica: Aquatic Sciences Journal Vol. 10 No. 1 (2023): Acta Aquatica: Aquatic Sciences Journal
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v1i2.9431

This study aims to determine the effect of adding activated charcoal from tuna bones on the growth of gouramy. This research was conducted at the Integrated Laboratory of the Faculty of Fisheries, Abulyatama University, Aceh. The test fish used were gouramy seeds with a size of 2-3 g and 5-6 cm. This study used a non-factorial completely randomized design, consisting of four treatments and three replications, including A (control; without the addition of activated charcoal), B (addition of 1% activated charcoal in feed), C (addition of 2% activated charcoal in feed), and D (addition of 3% activated charcoal in feed) for 60 days of the rearing period. Fish are kept in an aquarium with a size of 60 x 40 x 40 cm as many as 10 fish per container with a water level of 30 cm. During the maintenance period, fish were fed twice a day at satiation. Parameters measured included survival, absolute weight and length growth, daily growth rate (LPH), and feed conversion ratio (FCR). The data were analyzed using analysis of variance (ANOVA). if significantly different, continue further testing using Duncan. The results showed that the addition of 2% tuna bone activated charcoal in feed affected growth performance including in absolute weight and length growth, SGR, and gave the best value on FCR and SR of 8.98 ± 0.20 g; 3.36±0.13cm; 2.60±0.11; 1.63; 100±0.00%.Keywords: activated charcoal; Osphronemus gouramy; growth; fish bone

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