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All Journal Jurnal Teknik Kimia Seminar Nasional Teknik Kimia Kejuangan Jurnal IPTEK Konversi INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Journal of Research and Technology Tibuana : Journal of Applied Industrial Engineering JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Prosiding Seminar Nasional Sains dan Teknologi Terapan Ensiklopedia Education Review Jurnal Teknik Kimia Indonesia Journal of Mechanical Engineering, Science, and Innovation Jurnal Teknologi Lingkungan Lahan Basah Prosiding Seminar Nasional Teknik Elektro, Sistem Informasi, dan Teknik Informatika (SNESTIK) Prosiding Seminar Nasional Teknologi Industri Berkelanjutan Jurnal Pengabdian Masyarakat dan aplikasi Teknologi International Journal of Educational Insights and Innovations (IJEDINS) International Conference on Maritime Technology and Its Application Dinamika Kerajinan dan Batik: Majalah Ilmiah Science Get Journal
Erlinda Ningsih, Erlinda
LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)
Arts Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Pemanfaatan Tempurung Kelapa sebagai Katalis pada Proses Konversi Minyak Curah Menjadi Biodiesel Yustia Wulandari Mirzayanti; Erlinda Ningsih; Zain Lillahulhaq; Zuhdi Ma’sum; Chevy Renova; Yasin Wijaya
Journal of Research and Technology Vol. 6 No. 2 (2020): JRT Volume 6 No 2 Des 2020
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v6i2.351

Abstract

Vegetable oil is one of the alternative sources of raw material for fuel oil to produce biodiesel. The conversion reaction process requires the help of a catalyst to break down triglycerides into methyl esters. Therefore, this study aims to determine the performance of catalysts made from coconut shells to convert bulk oil into biodiesel. The catalyst performance is focused on biodiesel's yield parameters through the influence factor of catalyst weight, molar ratio, and %FAME. This research was conducted in three stages, namely (1) catalyst preparation, (2) application of catalyst performance through the conversion process of bulk oil into biodiesel, (3) washing of biodiesel. The first stage was catalyst preparation carried out by utilizing a coconut shell, which was first made into charcoal, then activated using H3PO4 then sulfonated with H2SO4. The second stage was the conversion process of bulk oil into biodiesel using coconut shell catalysts through a transesterification process using variations in the catalyst's weight to bulk oil (0.5; 1; 1.5; 2; and 2.5% wt/wt) and bulk oil molar:methanol ratio (1: 3; 1: 6; and 1: 9). The third stage was the process of washing biodiesel using HCl. Based on this study's results, the best catalyst weight was 2% wt/wt with a molar ratio of 1: 9 resulting in the highest yield of 89% and the FAME of 80.36%.
Removal of COD and Color Concentration in Batik Wastewater Using Electrofenton Niam, Achmad Chusnun; Mirzayanti, Yustia Wulandari; Fardiansyah, Muhammad Edo; Ningsih, Erlinda
Journal of Research and Technology Vol. 9 No. 2 (2023): JRT Volume 9 No 2 Des 2023
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v9i2.1040

Abstract

The effluent discharged from the batik textile industry often contains azo compounds and organic contaminants. One method employed to address these pollutants is the Electrofenton (EF) technique. This study aims to assess the effectiveness of electrofenton in reducing both color content and COD (Chemical Oxygen Demand) in batik dyeing effluent. The Electrofenton process was conducted in batch mode, varying electrode distances at 4 cm and 6 cm, H2O2:FeSO4 molarity ratios of (10:0.05) and (10:0.1), and electric voltage strengths at 6 volts and 8 volts. The research revealed that employing an electric voltage of 8 volts, an electrode distance of 4 cm, a contact time of 120 minutes, and a Fenton dosage molarity of 10:0.05 M resulted in a remarkable removal efficiency of 97.8% with a final concentration of 103 mg/L for color content. Additionally, for COD, employing the same parameters led to a removal effectiveness of 90.1%, with a final concentration of 730 PtCo. The impact of Fenton dosage on COD removal was statistically analyzed using the t-test. The computed t-value of 3.444 surpassed the tabulated t-value of 2.776, indicating a significant influence of Fenton dosage on COD removal.
ELEKTROKOAGULASI LIMBAH INDUSTRI SARUNG TENUN DENGAN ELEKTRODA AL-Zn DISUSUN SERI Ningsih, Erlinda; Mirzayanti, Yustia Wulandari; Ni'am, Achmad Chusnun
Dinamika Kerajinan dan Batik: Majalah Ilmiah Vol. 39 No. 1 (2022): DINAMIKA KERAJINAN DAN BATIK : MAJALAH ILMIAH
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Industri Kerajinan dan Batik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22322/dkb.v39i1.6941

Abstract

Elektrokoagulasi merupakan teknologi pengolahan limbah cair menggunakan tegangan listrik. Elektrokoagulasi memanfatkan prinsip elektrokimia untuk mengendapkan berbagai pengotor didalam limbah baik bahan organik maupun anorganik. Penelitian ini bertujuan untuk mengetahui pengaruh variasi jarak elektroda dan waktu proses elektrokoagulasi terhadap persen removal COD, TSS dan Intensitas warna. Pada penelitian ini menggunakan elektroda Al-Zn dengan ukuran 5x10 cm dan reaktor elektrokoagulasi 20x16x16 cm. Jarak elektroda pada proses elektrokoagulasi ini divariasikan yaitu pada jarak 2, 4 dan 6 cm. Waktu proses yang digunakan yaitu selama 220, 240, 260, 280 dan 300 menit. Tegangan listrik dalam proses elektrokoagulasi yang digunakan 12 volt. Hasil penelitian menunjukkan Persen removal COD dan Intensitas tertinggi pada lama waktu elektrokoagulasi 300 menit yaitu 93,49% dan 95,5%. Sedangkan untuk persen removal TSS lama waktu elektrokoagulasi terbaik pada 280 menit sebesar 78,71%. Jarak antar elektroda terbaik menghasilkan persen removal COD, TSS, dan intensitas warna, pada jarak terbaik pada 2 cm.
Zeolite Nanocomposites from Coal Fly Ash for Arsenic Removal in Wastewater Erlinda Ningsih; Hanifah Sriamelia; Salsabilla
Science Journal Get Press Vol 3 No 2 (2026): April, 2026
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/science.v3i2.575

Abstract

Arsenic contamination in wastewater poses serious environmental and public health risks because of its toxicity, persistence, and bioaccumulation potential. This study investigated the synthesis and performance of magnetic zeolite nanocomposites (MZN) derived from coal fly ash (CFA) for efficient As(V) removal from wastewater. CFA obtained from the PT PLN Ombilin Power Plant, West Sumatra, Indonesia, was converted into zeolite NaA/NaX through an alkaline hydrothermal method and subsequently modified with Fe₃O₄ nanoparticles to enhance adsorption capacity and magnetic separability. The synthesized MZN was characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDX), Brunauer–Emmett–Teller (BET), and vibrating sample magnetometer (VSM) analyses. Batch adsorption experiments were conducted to evaluate the effects of pH, contact time, adsorbent dosage, initial arsenic concentration, and temperature on adsorption performance. The maximum As(V) removal efficiency reached 97.4% under optimum conditions of pH 6, adsorbent dosage of 2 g/L, and contact time of 120 min. Adsorption behavior followed the Langmuir isotherm and pseudo-second-order kinetic models, indicating monolayer chemisorption. Thermodynamic analysis confirmed a spontaneous and endothermic process. Regeneration tests showed that MZN maintained over 85% removal efficiency after five adsorption–desorption cycles, demonstrating its potential as an effective, reusable, and low-cost adsorbent for industrial wastewater treatment.
Co-Authors Abas Sato Abdul Kadir Djaelani Achmad Chusnun Ni'am Agus Budianto Alfania, Vicha Ali Altway Andika Putri Ratnasari Anggraheny, Nurul Arif, Mochammad Arlini Dyah Radityaningrum Arrad Ghani Safitra Bakhtiar, Dian Syaifulloh Basuki, Febrianus Agnos Budhikarjono, Kuswandi Kusno Chevy Renova D. Cahyo, Septian Daniel Saputra Dewi, Risty Christina Dian Yanuarita Purwaningsih Dwi Setiawan Dwicahyani, Anindya Rachma Eksalia, Lina Eky Novianarenti Eky Novianarenti Fadilah, Siti Nur Fardiansyah, Muhammad Edo H, Naufal Putra Hanifah Sriamelia Heroe Poernomo Heroe Poernomo Imaniah Sriwijayasih Julaika, Sofiyya Kartika Udyani Lily Pudjiastuti, Lily Maharani, Agustin Misbahul Munir Mochamad Agil Yogi Parama Mustikasari, Yeni Ratu Nafiuddin, Mochammad Alfan Najuba, Maulidina Aulia Nanik Astuti Rahman Nur Azizah Nur Ihda Farikhatin Nisa Nur, M. Fachrul Mi’rad. Parama, Mochamad Agil Yogi Pratama, Angga Saptya Puguh Rumanto Putra, Ganda Gautama Trisa Putranto, Wisnu Setyo Rizal Mahmud Romadahnia, Clarisa Novela Salsabila, Kintan Rizky Salsabilla Saputra, Udi Widodo Suparto Suparto Vaggy, Wahyu Sandwi W. Putrisya, Santi Wulandari, Putri Oktavia Wulansari, Dessy Yasin Wijaya Yusof, Khairunnisa M. Yustia Wulandari Mirzayanti Zain Lillahulhaq Zuchrilah, Daril Ridho Zuhdi Ma’sum Zulaikha, Devie Mirza