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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Ilmiah Berkala: Sains dan Terapan Kimia
Yohanes B.J. Rusmanta
Cenderawasih University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics

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DISTRIBUSI VERTIKAL KARBON ORGANIK TOTAL (KOT) DAN HUBUNGANNYA DENGAN KAPASITAS TUKAR KATION (KTK) PADA TANAH HUTAN RAWA SEKUNDER DI SEMPADAN SUNGAI KUMB, MERAUKE, PAPUA Yohanes B.J Rusmanta; Barlah Rumhayati; Chasan Bisri
Jurnal Sains dan Terapan Kimia Vol 7, No 2 (2013)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (343.839 KB) | DOI: 10.20527/jstk.v7i2.2123

Abstract

Tanah memiliki sifat-sifat fisik dan kimiawi yang dipengaruhi oleh bahan-bahan penyusunnya dan faktor lingkungan. Beberapa sifat fisik dan kimiawi tanah saling berhubungan. Dengan mengetahui salah satu sifat kimia tanah, misalnya kandungan Karbon Organik Total (KOT), maka dapat diprediksi sifat kimiawi lainnya misalnya Kapasitas Tukar Kation (KTK). Telah dilakukan penelitian untuk mengetahui pola distribusi KOT dan KTK secara vertikal dari 0 hingga 50 cm. Sampel tanah di ambil sebanyak 7 sampel di mana 4 sampel pertama diambil dari lapisan 0 – 20 cm dengan ketebalan masing – masing 5 cm dan 3 sampel kedua dari lapisan 20 – 50 cm dengan ketebalan masing – masing 10 cm. Sampel tanah diambil dari hutan rawa sekunder di sempadan Sungai Kumb, Kabupaten Merauke, Provinsi Papua. Baik KOT maupun KTK mengalami penurunan secara linier sejalan dengan bertambahnya kedalaman lapisan tanah. Terdapat hubungan yang linier antara KOT dengan KTK memenuhi persamaan KTK = 32,37 + (2,565 KOT) dengan koefisien determinasi R2 = 0,840 Kata Kunci: tanah, kapasitas tukar kation, karbon organik total 
Reaksi Hidrorengkah n-Heksadeka Menggunakan Katalis Nikel-Zeolit Alam Serta Penentuan Energi Aktivasi (Ea) dan Orde Reaksi Ilham Salim; Yohanes B.J. Rusmanta; Jukwati Jukwati
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i3.1514

Abstract

Research has been carried out on the preparation of active natural zeolite impregnated with nickel followed by activity testing through the hydrocracking catalytic reaction of n-Hexadecane. Active natural zeolite was obtained from PT Prima Zeolita Yogyakarta. The nickel concentration in the zeolite sample was carried out by ion exchange method with [Ni(NH3)6]2+ precursor solution with a concentration of 0.06M. The nickel content of the catalyst was determined by Atomic Absorption Spectrophotometer (AAS). The hydrocracking reaction used a fixed bed reactor system. Ratio of feed (n-Hexadecane) : catalyst = 3 : 1 (in gram). Catalysis study also carried out at various temperatures, from 315oC - 450oC at  certain nickel content.  The results of the catalytic reaction at each temperature after passing through the cooling system there was a liquid fraction that had been successfully accommodated then weighed and determined the percent of conversion. Furthermore, for the determination of Ea and the order of the reaction using linear regression calculations. The results showed that the catalytic reaction using an active natural Ni-Zeolite catalyst in the n-Hexadecane hydrocracking process resulted in different conversion results depending on the temperature of the catalytic reaction. The largest conversion was obtained at a temperature of 450oC, which was 35.18%. The reaction order was the first-order reaction (n=1). Meanwhile, the activation energy or activation energy (Ea) of the catalytic reaction in the n-Hexadecane hydrocracking process using a natural Ni-Natural zeolite catalyst with a nickel content of 2.0% (w/w) was 127.071 kJmol-1.
Co-Authors Barlah Rumhayati Chasan Bisri Jukwati Jukwati Salim, Ilham