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Moondra Zubir
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Chemistry Department , State University of Medan Jl. Willem Iskandar Pasar V, Medan Estate Medan, Indonesia
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INDONESIA
Indonesian Journal of Chemical Science and Technology
Published by Universitas Negeri Medan
ISSN : 26221349     EISSN : 26224968     DOI : -
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology
Jurnal ini mempublikasikan artikel di bidang Kimia yang meliputi penelitian dasar dan terapan. Bentuk Publikasi di Indonesian Journal of Chemical Science and Technology : * Artikel * Review (berdasarkan permintaan Dewan Redaksi) * Communication (berdasarkan permintaan Dewan Redaksi)
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 12 Documents
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Search results for , issue "Vol 7, No 2 (2024): JULY 2024" : 12 Documents clear
Synthesis of Zeolite from Rice Husk Ash Through Hydrothermal Process in Alkaline Condition Jahro, Iis Siti; Nursanni, Banu; Nugraha, Asep Wahyu; Juwitaningsih, Tita; Cindy, Cindy; Amalia, Meisya
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 7, No 2 (2024): JULY 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v7i2.62257

Abstract

People consider rice husks as agricultural waste. In Deliserdang Regency, in one year's period, 12,600 tons of ash are collected from the burning of around 70,000 tons of rice husk. The synthesis of zeolite from ash of rice husks was carried out by starting process of forming sodium silicate and aluminate compounds through the reaction with Al2O3 and NaOH in water on the room temperature for 10 hours. The results of reaction is refluxed at 70 C for 3 hours. After being stored for around 12 hours at room temperature, the reflux process was continued at 120 C for 8 hours. Infrared spectra of zeolite show an infrared absorption band in the area of around 440; 606; 745; and 1007 cm-1 which is the typical infrared absorption of zeolite X. This is supported by the XRD diffractogram with the diffraction peaks at 2 degree of 12.34; 17.51; 21.53; 27.90; 28.50 and 33.22 degrees.
Adsorption of Linear Alkylbenzene Sulfonate (LAS) using Moringa oleifera Seeds Manurung, Tety Wahyuningih; Ningsih, Rima Oktavia; Irawati, Utami
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 7, No 2 (2024): JULY 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v7i2.62253

Abstract

One of the main components in detergent is Linear Alkylbenzene Sulfonate (LAS), an anionic surfactant. In the aquatic environment, LAS has the potential to cause pollution and cannot be decomposed under anaerobic conditions (no air), so it is necessary to study processing methods that can reduce the concentration of LAS in the waters. In this research, a study of LAS adsorption by Moringa seeds was carried out. The parameters studied were the influence of contact time and solution pH. A study on the isothermic adsorption of LAS on Moringa seeds using the Freundlich and Langmuir approach was also carried out. The concentration of LAS was determined by the Methylene Blue Active Surfactant (MBAS) method using a UV-Vis spectrophotometer. The results showed that adsorption reached equilibrium after 90 minutes. A pH value of 5 is the optimum pH value for the adsorption of LAS by Moringa seeds. Using the Langmuir approach, the LAS adsorption capacity of Moringa seeds was calculated to be 400 mg/g.

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