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All Journal Indonesian Sugar Research Journal Bulletin of Chemical Reaction Engineering & Catalysis
Janah, Reza Rodhatul
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Electrical & Electronics Engineering Energy Environmental Science

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Sintesis dan Karaktersisasi Surfaktan Sukrosa Ester Asam Lemak sebagai Surfaktan Yuliatun, Simping; Mustofa, Ghufron Bisri; Janah, Reza Rodhatul
Indonesian Sugar Research Journal Vol 4, No 1 (2024): Indonesian Sugar Research Journal
Publisher : Pusat Penelitian Perkebunan Gula Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54256/isrj.v4i1.124

Abstract

Surfaktan sukrosa ester asam lemak bersifat biodegradable dan banyak digunakan dalam bidang makanan, kosmetik dan produk pembersih karena dapat bertindak sebagai pengemulsi, pembusa dan agen dispersan. Penelitian ini bertujuan untuk mengetahui karakteristik produk sukrosa ester asam lemak dengan menggunakan jenis katalis yaitu K2CO3 dan Na2CO3 serta pengelmulsi kalium palmitat dan kalium stearat. Proses sintesa surfaktan ini diawali dengan pembuatan metil ester asam lemak (MEAL) dari minyak sawit, selanjutnya dilakukan reaksi trans esterifikasi antara MEAL dengan perlakuan jenis pengemulsi berupa kalium palmitat dan kalium stearat, serta perlakuan jenis katalis berupa K2CO3 dan Na2CO3. Tiap perlakuan dilakukan dengan 3 kali ulangan. Sukrosa ester asam lemak dikarakterisasi untuk parameter tegangan antar muka, konsentrasi kritis misel, kesetimbangan hidrofilik lipofilik, bilangan asam dan bilangan penyabunan. Hasil penelitian menunjukkan sukrosa ester asam lemak diperoleh 14,73% dengan derajat esterifikasi sebesar 12,74±0,51% pada penggunaan katalis kalium karbonat dan pengemulsi kalium stearat Karakter surfaktan sukrosa ester pada kombinasi penggunaan katalis kalium karbonat dan pengelmulsi kalium stearat sebagai berikut tegangan muka 10,68±0,51%, konsentrasi kritis misel 15,0±0,2 ppm, nilai kesetimbangan hidrofilik-lipofilik sebesar 17,58.
Effect of Nickel Incorporation on Nitrogen-Doped Titania/Zirconia Nanocomposites for Enhanced Visible-Light Photocatalytic Degradation of Phenol Syoufian, Akhmad; Saviola, Aldino Javier; Janah, Reza Rodhatul; Afifah, Rina; Wijaya, Karna; Kurniawan, Rian; Sudiono, Sri; Oh, Won-Chun; Wangsa, Wangsa
Bulletin of Chemical Reaction Engineering & Catalysis 2026: BCREC Volume 21 Issue 2 Year 2026 (August 2026)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20529

Abstract

The rapid expansion of industrial activities has resulted in the discharge of persistent organic pollutants, such as phenol, into aquatic environments. Nowadays, developing visible-light-responsive photocatalysts for the efficient degradation of such pollutants remains a major environmental challenge. In this study, nickel–nitrogen co-doped titania immobilized on zirconia (Ni,N–TiO₂/ZrO₂) nanocomposites with varying nickel loadings were synthesized and evaluated for phenol photodegradation under visible-light irradiation. Nickel incorporation significantly modified the optical and photocatalytic properties of the materials. The 5% Ni,N–TiO₂/ZrO₂ catalyst exhibited the lowest band gap energy (2.69 eV) compared with N–TiO₂/ZrO₂ (3.03 eV), leading to improved visible-light absorption and enhanced charge transfer. Under the experimental conditions (initial phenol concentration = 10 mg.L⁻¹, catalyst dosage = 100 mg, irradiation time = 120 min), it achieved a phenol removal efficiency of 85.36% with an apparent rate constant of 0.0229 min⁻¹, outperforming N–TiO₂/ZrO₂ (40.72%, 0.0042 min⁻¹). These results confirm that a 5 wt% nickel loading provides the most effective modification, demonstrating a strong synergistic interaction between nickel and nitrogen that enhances photocatalytic activity. The developed Ni,N–TiO₂/ZrO₂ catalyst, therefore, holds significant promise for future applications in water purification and environmental remediation. Copyright © 2026 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Co-Authors Afifah, Rina Akhmad Syoufian Karna Wijaya Mustofa, Ghufron Bisri Oh, Won-Chun Rian Kurniawan Saviola, Aldino Javier Simping Yuliatun, Simping Sri Sudiono Wangsa, Wangsa