Kesetimbangan Dan Kinetika Adsorpsi Ion Cu2+ Pada Zeolit-H

Estiaty, Lenny M.

doi:10.14203/risetgeotam2012.v22.63

Cited by 8 publications

(6 citation statements)

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“…Konsentrasi ion amonia yang terserap oleh adsorben juga dapat ditentukan dengan rumus (Estiaty, 2013 Ce = Konsentrasi larutan pada kesetimbangan, mg/L m = Massa adsorben, g v = Volume larutan pada percobaan, L Tabel 1 menunjukkan hasil pengaluran linear log qe terhadap log Ce (Freundlich) dan Ce/qe terhadap Ce (Langmuir)…”

Section: Penentukan Model Kesetimbanganunclassified

Kesetimbangan Proses Desorpsi Amonia Dari Arang Aktif Hasil Pirolisis Limbah Biomassa

Hasni

Yani

Aladin

et al. 2020

AJST

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Ammonia which is bound to the adsorbent can interfere adsorption process, so that release the compound can be done by desorption process. This research intends to know appropriate equilibrium models to determine maximum capacity of active carbon for desorption ammonia. The method which used in desorption process are Langmuir and Freundlich isotherm models. The research was performed with variation of active carbon mass and variation of contact time. The concentration of ammonia on the desorption process was determined using spectrophotometer at λ 420 nm. The experiment result showed that the more the active carbon dosage is used, the more the concentration of ammonia is increased. Optimum contact time during 7 hours with desorption percentage 94-96%. This research of ammonia desorption by active carbon followed the Langmuir equilibrium model R2 0.954 and Freundlich equilibrium model R2 0.952. The equilibrium equation is used Langmuir equation y = -0.015x + 3.185, maximum desorption capacity is 66.67 mg/g.

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Section: Penentukan Model Kesetimbanganunclassified

Kesetimbangan Proses Desorpsi Amonia Dari Arang Aktif Hasil Pirolisis Limbah Biomassa

Hasni

Yani

Aladin

et al. 2020

AJST

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“…Sementara itu, persamaan regresi linear untuk persamaan Freundlich dibuat dengan memplotkan log qe (sebagai sumbu y) terhadap log Ce (sebagai sumbu x). Nilai koefisien korelasi (r) dari kedua persamaan regresi linear kemudian dibandingkan, dimana nilai r yang lebih mendekati 1 merupakan model adsorpsi isotermal yang lebih sesuai (Estiaty, 2012;Utomo dkk., 2018). Karbon aktif ampas tebu dihasilkan dari ampas tebu yang dibakar menjadi arang (karbon), kemudian dilakukan aktivasi secara kimia dengan merendam karbon tersbut menggunakan larutan asam seperti H2SO4.…”

Section: Penentuan Model Adsorpsi Isotermal Ny Pada Karbon Aktifunclassified

“…Korelasi tertinggi diperoleh jika R=1 (Estiaty, 2012;Miller dan Miller, 2010). Pada penelitian ini, persamaan garis lurus yang dihasilkan dari persamaan Langmuir adalah y = 0,00132 x-0,2788 (R=0,9984) dan persamaan Freundlich adalah y=-0,2703x+1,9944 (R=0,9950).…”

Section: Model Adsorpsi Isotermal Ny Dengan Adsorbenunclassified

Studi Adsorpsi Zat Warna Naphthol Yellow S Pada Limbah Cair Menggunakan Karbon Aktif Dari Ampas Tebu

Utoo

Santoso

Yuhaneka³

et al. 2019

Jurnal Kimia

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The aim of this research is to get activated carbon from sugarcane bagasse with high adsorption capacity to Naphthol Yellow S and to know factors influencing the adsorption capacity. Activated carbon is prepared by incomplete combustion of sugracane bagasse. The resulting carbon is activated with H2SO4 with concentration variation of 0.5; 1.0; 1.5 and 2.0 M and is continued by calcination at 400 °C. The measurement of the surface area of ??activated carbon by the methylene blue method indicates that the activation process successfully extends the surface area of carbon from 31.87 m2/g before activation to 66-72 m2/g after activation. Activated carbon with concentration of 2.0 M H2SO4 showed the highest surface area of ??71.85 m2/g, however, the best adsorption was shown by activated carbon with a concentration of 0.5 M H2SO4 with the adsorption capacity of 83.93%. The adsorption test showed that the best amount of adsorbent was 0.2 g with contact time for 30 minutes. Prolonged contact time can decrease the amount of Naphthol Yellow S adsorbed. The best adsorption test result was shown by sample with activator concentration of 0,5 M, mass of 0,2 g and contact time of 30 min with adsorption capacity 95,81% or amount of dye adsorbed equal to 143,72 mg/g. The adsorption study also showed that the entire Naphthol Yellow S adsorption process followed the Langmuir isothemal adsorption model. Qualitative testing of real batik waste indicates that activated carbon can reduce the dyes waste containing Naphthol Yellow Sexhibited by the color of batik waste which is more faded.

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“…Adsorpsi isoterm menunjukkan banyaknya zat yang teradsorpsi per gram adsorben yang dialirkan pada suhu tetap. Proses adsorpsi terjadi pada batas permukaan dua fase, sebagai contohnya fase cair dengan fase padat (Estiaty, 2013). Isoterm adsorpsi kolesterol oleh N-metil kitosan dilakukan untuk mengetahui perbandingan konsentrasi optimum adsorpsi.…”

Section: Gambar 4 Kurva Kalibrasi Kolesterolunclassified

Adsorpsi Kolesterol Lemak Sapi dengan N-Metil Kitosan

Kurniasih

Setyaningtyas²,

Kartika³

et al. 2018

J. Rekayasa Kim. Lingkung.

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AbstrakN-metil kitosan merupakan derivat kitosan yang memiliki muatan polikationik dan dapat bereaksi dengan muatan negatif seperti kolesterol. Penelitian ini bertujuan untuk mensintesis N-metil kitosan dan mempelajari adsorpsi kolesterol oleh N-metil kitosan. N-metil kitosan disintesis dari kitosan melalui mekanisme reduktif aminasi. N-metil kitosan hasil sintesis dikarakterisasi dengan FTIR dan diukur kadar air, berat molekul dan indeks swellingnya. Nmetil kitosan kemudian diuji kemampuan adsorpsinya terhadap kolesterol lemak sapi. Studi adsorpsi berupa isoterm adsorpsi juga telah dilakukan. Hasil penelitian menunjukan N-metil kitosan hasil sintesis memiliki kadar air sebesar 5,17%, bobot molekul 130.106,80 g/mol, dan indeks swelling 495,04%. Adsorpsi kolesterol menggunakan N-metil kitosan mengikuti model adsorpsi isoterm Freundlich. N-metil kitosan memiliki kemampuan adsorpsi terhadap kolesterol dalam lemak sapi sebesar 11,61 mg/g. Kata kunci: adsorpsi, lemak sapi, kitosan, kolesterol, N-metil kitosan Abstract N-methyl chitosan is a chitosan derivative that has a polycationic charge and can react to a negative charge such as cholesterol. This study aims to synthesize N-methyl chitosan and study the adsorption of cholesterol by N-methyl chitosan. In this research, N-methyl chitosan has been synthesized from chitosan through reductive amination mechanism. The synthesized Nmethyl chitosan was characterized by FTIR and measured moisture content, molecular weight, and swelling index. N-methyl chitosan then tested its adsorption ability against cow's fat cholesterol. The adsorption study of adsorption isotherm has also been performed. The result shows N-methyl chitosan synthesized has characters such as water content 5.17%, molecule weight 130,106.80 g/mol, and swelling index 495.04%. The adsorption of cholesterol by Nmethyl chitosan follow Freundlich isotherm adsorption model. Adsorption ability of N-methyl chitosan towards cholesterol fat cow is 11.61 mg/g.

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Kesetimbangan Dan Kinetika Adsorpsi Ion Cu2+ Pada Zeolit-H

Cited by 8 publications

References 0 publications

Kesetimbangan Proses Desorpsi Amonia Dari Arang Aktif Hasil Pirolisis Limbah Biomassa

Kesetimbangan Proses Desorpsi Amonia Dari Arang Aktif Hasil Pirolisis Limbah Biomassa

Studi Adsorpsi Zat Warna Naphthol Yellow S Pada Limbah Cair Menggunakan Karbon Aktif Dari Ampas Tebu

Adsorpsi Kolesterol Lemak Sapi dengan N-Metil Kitosan

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