Isoterm Freundlich, Model Kinetika, dan Penentuan Laju Reaksi Adsorpsi Besi dengan Arang Aktif dari Ampas Kopi

Tahad, Aswar; Sanjaya, Ari Susandy

doi:10.30872/cmg.v1i2.1140

Cited by 5 publications

(4 citation statements)

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“…mengindikasikan semakin besar kemapuan biochar dalam mengadsorpsi zat warna metilen biru. Semakin besar nilai KF maka semakin besar kemampuan adsorben dalam mengadsorpsi (Tahad & Sanjaya, 2017). Kapasitas adsorpsi pada waktu 60 menit menggunakan konsentrasi awal 50 mg/L pada masing-masing sampel yaitu 44,70; 45,86; 46,22 dan 46,90 mg/g.…”

Section: Isoterm Adsorpsiunclassified

Kajian Isoterm Adsorpsi Metilen Biru pada Biochar Kulit Sagu (Metroxylon sagu)

Amelia

Fitria

Sunardi

2023

JUSTEK

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Sago bark biomass waste was modified into biochar through pyrolysis with temperature variations of 500 ℃, 600 ℃ and 700 ℃ for 2 hours to increase the adsorption capability. This research aims is to know the adsorption isotherm model of methylene blue on sago bark biochar. The results showed that the adsorption capability of biochar increased comparing to the adsorption capability sago bark without pyrolysis process dan reached optimum adsorption condition at pH 9 for 10 minutes. The results of the analysis show that the adsorption of methylene blue on biochar is closer to the Freundlich isotherms model than to the Langmuir isotherm model. The adsorption capacity of methylene blue on pyrolysis biochar at temperature of 500 ℃, 600 ℃, and 700 ℃ respectively were 45,86; 46,22 and 46,90 mg/g.Abstrak: Limbah biomassa kulit sagu dimodifikasi menjadi biochar melalui pirolisis dengan variasi suhu 500 ℃, 600 ℃, dan 700 ℃ selama 2 jam untuk memperbaiki kemampuan adsorpsinya. Penelitian ini bertujuan untuk mengetahui pola isoterm adsorpsi metilen biru pada biochar kulit sagu. Hasil penelitian menunjukkan bahwa kemampuan adsorpsi biochar terhadap metilen biru meningkat dibandingkan adsorpsi sebelum proses pirolisis dan mencapai kondisi optimum adsorpsi pada pH 9 selama 10 menit. Hasil analisis menunjukkan bahwa adsorpsi metilen biru pada biochar lebih mendekati model isoterm Freundlich dibanding model isoterm Langmuir. Kapasitas adsorpsi metilen biru pada biochar hasil pirolisis pada suhu 500 ℃, 600 ℃, dan 700 ℃ berturut-turut sebesar 45,86; 46,22 dan 46,90 mg/g.

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Section: Isoterm Adsorpsiunclassified

Kajian Isoterm Adsorpsi Metilen Biru pada Biochar Kulit Sagu (Metroxylon sagu)

Amelia

Fitria

Sunardi

2023

JUSTEK

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“…Penentuan mekanisme dan laju adsorpsi suatu adsorbat, membutuhkan suatu pendekatan dengan model kinetika adsorpsi. Mekanisme adsorpsi tergantung pada karakteristik fisik atau kimia adsorben yang digunakan dan proses transportasi molekul pada saat penjerapan (Tahad & Sanjaya, 2017). Penentuan model kinetika adsorpsi Fe pada limbah ditentukan dengan evaluasi pengaruh waktu kontak (0, 15, 30, 60, 120 dan 180 menit).…”

Section: Penentuan Model Kinetika Adsorpsiunclassified

“…Model kinetika ini terjadi secara tunggal dimana adsorben hanya mampu menjerap logam Fe lapisan tunggal pori-pori permukaan adsroben (Hajar et al, 2018). Model kinetika orde 2 menggambarkan kecepatan laju adsorpsi berbanding lurus dengan dua konsentrasi adsorbet atau berbanding langsung dengan kuadrat salah satu adsorbatnya (Tahad & Sanjaya, 2017). Sementara itu, model kinetika pseudo first order menginterpretasikan proses adsorpsi pada tahap awal (initial stage).…”

Section: Gambar 7 Model Kinetika Pseudo Second Orderunclassified

Utilization of Papaya Seed Powder as a Bioadsorben to Reduce Total Iron (Fe) in Wastewater

Munira

Aladin²,

Perwitasari³

et al. 2022

Eksergi

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“…Empirical approaches are first, second, pseudo-first and pseudo-second orders. First order reaction depends on only one of the reactants [21]. Second order reaction has rate which is proportional to product of both of the reactants or in quadratic form [22].…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Oyster Shell Waste (Crassostrea Gigas) as A Cheap Adsorbent for Adsorption Of Methylene Blue Dyes: Equilibrium and Kinetics Studies

Muhammad

Meriatna

Afriani

et al. 2021

Int. J. Eng. Scie. and Inform. Technology.

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In this study, Oyster (Crassostrea gigas) shell powder which contains calcium carbonate (CaCO3) was converted into calcium oxide (CaO). The Oyster shell powder that had been activated was utilized for the adsorption of the methylene blue (MB) dyeing material, which is one of waste water concerns. Oyster shells were crushed and sieved into 100 mesh sized powder and then calcinated at a temperature of 600℃ and 800℃ both for 4 hours period. To determine the adsorption equilibrium, methylene blue (MB) solution was used with varying concentration from 10 to 50 mg/L in which the adsorbent weighing 3 g was put into a conical flash and shaken until the adsorption equilibrium was reached. As for the adsorption kinetics, 250 mL MB solution was used with initial concentrations of 10, 20 and 30 mg/L, with an adsorbent weight of 3 g and a solution at pH 11 for each concentration. The evaluation of the experimental data from the adsorption process is well explained by the Freundlich equation, with the correlation coefficient value (R2) found to be 0.9999, where the value of the adsorption intensity (n) is close to unity; this shows that the adsorption is multilayer or in other words the adsorption energy is heterogeneous. The kinetics study also shows that pseudo second-order model is the most applicable to the adsorption process. From the pseudo-second-order model, with the correlation coefficient between 0.9984 - 0.9999 can explain that the methylene blue (MB) adsorption process is chemically based sorption or in other words termed as chemisorption.

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Isoterm Freundlich, Model Kinetika, dan Penentuan Laju Reaksi Adsorpsi Besi dengan Arang Aktif dari Ampas Kopi

Cited by 5 publications

References 0 publications

Kajian Isoterm Adsorpsi Metilen Biru pada Biochar Kulit Sagu (Metroxylon sagu)

Kajian Isoterm Adsorpsi Metilen Biru pada Biochar Kulit Sagu (Metroxylon sagu)

Utilization of Papaya Seed Powder as a Bioadsorben to Reduce Total Iron (Fe) in Wastewater

Oyster Shell Waste (Crassostrea Gigas) as A Cheap Adsorbent for Adsorption Of Methylene Blue Dyes: Equilibrium and Kinetics Studies

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