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All Journal Jurnal Rekayasa Proses International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis Seminar Nasional Teknik Kimia Kejuangan Journal of Engineering and Technological Sciences Jurnal Sains & Teknologi Lingkungan Indonesian Journal of Chemistry Jurnal Chemurgy Jurnal Rekayasa Proses Indonesian Journal of Life Cycle Assessment and Sustainability ASEAN Journal of Chemical Engineering PELS (Procedia of Engineering and Life Science) Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Rekayasa Proses (Journal of Environmental Sustainability Management)
Muhammad Mufti Azis
Chemical Engineering Department, Faculty Of Engineering, Gadjah Mada University, Yogyakarta
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Social Sciences Other

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Microwave-Assisted Extraction of Polysaccharides from Chlorella pyrenoidosa and Its Characterization Aulia, Margaretha Praba; Azis, Muhammad Mufti; Rochmadi, Rochmadi; Budiman, Arief
Indonesian Journal of Chemistry Vol 25, No 3 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.103337

Abstract

This study explored an efficient method for extracting polysaccharides from Chlorella pyrenoidosa using microwave-assisted extraction (MAE) with water as the solvent, a technique consistent with green chemistry principles. The goal was to enhance the yield and quality of polysaccharides for their potential applications as multifunctional active ingredients in the pharmaceutical and functional food industries. Key extraction parameters, including extraction time (10, 20, and 30 min), temperature (80 °C), and solid-to-liquid ratios (1:20, 1:30, 1:40 m/v), were systematically evaluated. The results indicated that a solid-to-liquid ratio of 1:40 m/v at 80 °C for 10 min yielded the highest polysaccharide content (56.64%). FTIR analysis confirmed the presence of pyranose rings in D-glucose and hydroxyl groups, while HPLC identified D-mannose (58.12%) as the predominant sugar, followed by D-glucose (34.46%), D-galactose (3.61%), and L-rhamnose (3.81%). Purified polysaccharide was composed of major mannose and glucose, a biomolecule very important given that it has wide applications in medical and food industries.
KAJIAN PENGARUH LAPISAN MEDIA PADA NON-VEGETATED SWALE SEBAGAI FILTER LARUTAN PUPUK NPK Zulapriansyah, Rizki; Supraba, Intan; Azis, Muhammad Mufti
Jurnal Sains dan Teknologi Lingkungan Vol. 14 No. 2 (2022): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol14.iss2.art4

Abstract

Penggunaan pupuk NPK pada lahan pertanian secara berlebihan mengakibatkan banyak pupuk tidak terserap sehingga terbawa masuk ke perairan oleh limpasan air permukaan saat hujan dan menyebabkan eutrofikasi. Unsur hara anorganik Nitrogen (N) dan Fosfor (P) menjadi nutrisi bagi alga sehingga menyebabkan tumbuhnya alga yang berlebihan pada perairan atau biasa disebut algae bloom. Penelitian ini bertujuan untuk mengkaji seberapa besar pengaruh jenis dan tinggi lapisan media pada non-vegetated swale dalam menyaring parameter Nitrogen (N) dan Fosfor (P) yang berasal dari larutan pupuk NPK komersial. Metode yang diterapkan adalah dengan menyiramkan aliran air larutan pupuk NPK melalui non-vegetated swale dengan dua ketebalan lapisan yang berbeda. Konsentrasi masuk larutan NPK yaitu 123,77-124,77 mg/l fosfat, 16,54-16,72 mg/l amoniak serta kandungan nitrat dan nitrit yang kecil. Aliran air larutan pupuk NPK sebelum dan sesudah melalui non-vegetated swale diambil sampelnya yang kemudian diuji dengan alat spektrofotometer untuk mengetahui perbedaan kandungan fosfat, nitrat, nitrit dan amonianya. Hasil penelitian menunjukkan bahwa kedua non-vegetated swale memiliki kemampuan menyaring konsentrasi fosfat pada larutan air pupuk NPK yang sangat baik, keduanya mampu mengurangi konsentrasi fosfat hingga 120 mg/l. Hasil pengukuran nitrat dan nitrit menunjukkan kenaikan sekitar 5 mg/l, sedangkan kandungan amoniak turun sekitar 16 mg/l. Hal ini menunjukkan terjadinya proses nitrifikasi dan menunjukkan bahwa kedua non-vegetated swale pada penelitian ini memiliki kemampuan penyaringan N yang belum optimal.
Thermal Stability Test and Formulation of Sodium Lignosulfonate with Isoamyl Alcohol as EOR Surfactant Andriani, Anisa Novi; Azis, Muhammad Mufti; Purwono, Suryo
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Sodium lignosulfonate (SLS) is a promising low-cost surfactant that can be prepared from biomass. There has been large interest to utilize SLS as a chemical Enhanced Oil Recovery (EOR) surfactant. For that purpose, SLS is often mixed with other chemicals such as alcohols. The aim of this study was to find the best formulation of mixed-surfactant and to perform its thermal stability. The resulting mixed-surfactant was then characterized with variety of tests: aqueous stability, phase behavior, and IFT values. We found that a mixture that consists of 50 wt.% SLS, 30 wt.% Isoamyl Alcohol, and 20 wt.% of Palm Fatty Acid Distillate (PFAD) soap gave ultralow IFT at 1.864 × 10-3 mN/m. Phase behavior test shows that 1 wt% of mixed-surfactant formed a Winsor Type III. Subsequently, thermal stability test was conducted at 70°C for 90 days. The results showed that the IFT value fluctuates within the range of 10-3 mN/m for the first three weeks. After three weeks, the IFT values tend to increase to 10-2 mN/m until the end of the test. Hence, although ultralow IFT was achieved in the beginning of the test, further study is needed to improve the long-term stability of the present mixed-surfactant
Demineralisasi Batubara Berkadar Abu Tinggi dengan Leaching Menggunakan Alkali Ikhsana, Mifta Aulia; Azis, Muhammad Mufti; Purwono, Suryo
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

The study was comdustred on the demineralization of Jambi coal with high ash content as an effort to improve quality. The coal selected first crushed to -80 + 115 mesh. Demineralization was carried out using leacjing process with NaOH 20, 25, and 30% (%weight). The best parameter was used in subsequent leaching process to determine the effect of temperature of 50, 70, 90oC. The result showed that the percentage of demineralization increased with increasing demineralization reduction 34%
Preparation and Characterization of Ni/H-ZSM-5 Catalysts for Producing Green Diesel from Palmitic Acid Kurniati, Sayekti; Azis, Muhammad Mufti; Dwiatmoko, Adid Adep
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Biofuel is a promising alternative as a sustainable energy resource in the transportation sector in Indonesia. Green diesel is one of biofuels that can be produced from feedstock containing fatty acid. Fatty acid conversion to green diesel can be conducted via hydrodecarboxylation or hydrodeoxygenation process. Catalyst Ni/H-ZSM-5 is a potential catalyst to convert fatty acid to n-alkane which is the main component in green diesel. In this work, we prepared Ni/H-ZSM-5 catalyst with various Ni loading of 7%, 13%, 18%, and 25%, respectively. The catalysts were synthesized according to a simple incipient wetness impregnation method. Those catalysts were characterized with X-ray fluorescence, Field-Emission Scanning Electron Microscopy, and NH3-TPD. The highest nickel-loading catalyst, Ni 25%/H-ZSM-5, gave the best dispersion. NH3-TPD results showed the presence of two acid sites, namely Brønsted acid site and Lewis acid site. The presence of Brønsted acid sites is crucial to facilitate fatty acid conversion to n-alkane.
Catalytic Pyrolysis of Corn Cob Using Fe-Ni/Char Catalyst Safitri, Mutia; Azis, Muhammad Mufti; Wintoko, Joko; Kristanto, Jonas; Caroko, Novi
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

There is a growing interest to convert biomass waste such as corn cob to biofuel. Thermal conversion such as pyrolisis may play an important role to produce bio-oil. The objective of this research was to develop a kinetic study of catalytic pyrolysis of corn cob over Fe-Ni/Char catalyst using Thermogravimetric Analysis (TGA). The solid catalyst was prepared by impregnation method. The ratio of the percentages of Fe and Ni metals in the X-Ray Fluorescence (XRF) analysis of the catalyst was close to 1:1, resulting in metal loading values of 2.5% (1.062% and 1.013%), 5% (2.291% and 2.794%), and 10% (4.947% and 5.417%) for the catalyst. The pyrolysis experiments were performed using various catalyst loadings of 0, 2.5, 5, and 10%. In addition, the present study also investigated the influence of heating rates of 5, 10, and 20 K min-1. Two isoconversion models, Kissinger-Akahira-Sunose (KAS) and Ozawa-Flynn-Wall (OFW) were utilized to determine the activation energies. The activation energies calculated using the KAS and OFW models revealed a consistent trend, with values of activation energy of corn cob pyrolysis around 124 - 303 kJ/mol and 133 - 313 kJ/mol, respectively.
Co-Authors Alfian Hayu Sudibya Andriani, Anisa Novi Anis Nurdhiani Rosdi Arief Budiman Ariff Trisetia Anggara Arista Dwi Rahmawati Caroko, Novi Damayanti, Sri Ismiyati Derek Creaser Desi Amalia Fenyka Dwiatmoko, Adid Adep Edwin Nur Huda Fergie Febrina Galuh Almas Darmawati Hartanto, Danang Tri Hary Sulistyo Hary Sulistyo Hary Sulistyo Hary Sulistyo Haryanto, Imam Hilya Mudrika Arini Himawan Novianto Ignesti Anindia Ikhsana, Mifta Aulia Imam Karfendi Putro Indah Hartati Indah Hartati Intan Supraba, Intan Irma Atika Sari Jonas Kristanto Kristanto, Jonas Kurniati, Sayekti Margaretha Praba Aulia Moh Fahrurrozi Moh Fahrurrozi Mohd Razif Harun Muhammad Abdul Ghony Muhammad Kurniawan Adiputra Muhammad Noor Ridho Aji Muslikhin Hidayat Nur Baiti Listyaningrum Ramadhani, Laily Isna Ringgani, Retno Rio Arya Pratama Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Sabariyanto Sabariyanto Safitri, Mutia Sarto Sarto Sarto Sarto Sarto Sarto Siti Syamsiah Soni Hartanto Sudibyo, Hanifrahmawan Suprihastuti Sri Rahayu Suryo Purwono Sutijan Sutijan Sutijan Sutijan Titi Tiara Anasstasia Titi Tiara Anasstasia Titi Tiara Anasstasia Titi tiara Anasstasia Tri Sarifah Utami Wahyudi Budi Sediawan Wahyudi Budi Sediawan Wahyudi Budi Sediawan Wingo Wira Dewanatan Wiratni Budhijanto Wulandari, Lisa Ayu Zulapriansyah, Rizki