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All Journal Jurnal Rekayasa Proses Reaktor GEMA TEKNOLOGI JURNAL SAINS PERTANIAN EQUATOR Jurnal Neutrino : jurnal fisika dan aplikasinya Eksergi: Chemical Engineering Journal Seminar Nasional Teknik Kimia Kejuangan Prosiding Semnastek Jurnal Dinamika Penelitian Industri Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Ampere IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Sriwijaya International Seminar on Energy-Environmental Science and Technology Sistemasi: Jurnal Sistem Informasi JURNAL MANAJEMEN MOTIVASI ALCHEMY Jurnal Penelitian Kimia Jurnal Distilasi Jurnal Rekayasa Proses Jurnal Redoks Jurnal ULTIMA Computing Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jurnal Inovator ADLIYA: Jurnal Hukum dan Kemanusiaan Jurnal Abdimas Mandiri INTERNATIONAL JOURNAL OF SOCIAL, POLICY AND LAW (IJOSPL) Indobiosains Jurnal Pengabdian kepada Masyarakat ARRUS Journal of Engineering and Technology Management Science Research Journal EPSILON: Journal of Electrical Engineering and Information Technology Jurnal Teknik Kimia dan Lingkungan Jurnal Migasian Jurnal Dwija Kusuma Integrasi : Jurnal Ilmiah Teknik Industri Jurnal Rekayasa Proses Jurnal Surya Energy
Eko Ariyanto
Universitas Muhammadiyah Palembang
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Synthesis and Characterization of an Adsorbent from Chicken Eggshell and Its Application for Methyl Orange Eka Sri Yusmartini; Mardwita Mardwita; Eko Ariyanto; Wahyu Triaji Rahadianto; Ikbal Oktaviansyah; Muhammad Dzaky Muzhaffar
ALCHEMY Jurnal Penelitian Kimia Vol 22, No 1 (2026): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.22.1.96880.170-178

Abstract

Eggshell is a part that protects egg components from various external threats, including chemical, physical, and biological factors. This study aimed to obtain an adsorbent from chicken eggshells using physical and chemical activation techniques. The quality of the eggshell-derived adsorbent was assessed and compared with the Indonesian National Standard (SNI) 1995, with a focus on parameters such as ash content, moisture content, and iodine absorption. The adsorbent obtained was applied to a solution of methyl orange, and Fourier transform infrared spectroscopy (FTIR) analysis was conducted before and after the adsorption process. Furthermore, the study stages include adsorbent preparation, activation, and adsorption. The adsorbent weight for this process was 17 grams, with time intervals of 15, 30, 45, 60, and 75 minutes. The results showed that both physically activated as well as physical and chemical activated adsorbents met the SNI 1995 standard, based on the parameters of water content (1.73% and 2.86%), ash content (8.18% and 6.745), and iodine absorption (761.40 mg/g and 774.09 mg/g). FTIR analysis confirmed the presence of a hydrocarbon and an OH group in the structure before and after adsorption. The optimum methyl orange adsorption capacity was achieved at an adsorbent mass of 17 grams and a contact time of 60 minutes, resulting in removal efficiencies of 20.38% for physical activation and 24.11% for physical and chemical activation.
Simulation Study of Propylene Glycol Formation from Propylene Oxide and Water: Effect of Reactor Type, Reactant Ratio, Temperature, and Reactor Configuration Eko Ariyanto; Eka Sri Yusmartini; Robiah Robiah; Feby Ardianto
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 9, No 1 (2024): February 2024
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v9.i1.26

Abstract

This study investigates the influence of reactor type, reactor configuration, reactor temperature, and reactant ratio on the formation of propylene glycol from propylene oxide and water using HYSYS simulation software. The examined reactor types include Continuous Stirred Tank Reactors (CSTR) and Plug Flow Reactors (PFR). The impact of reactant ratio is explored by varying the mole ratio of propylene oxide to water. The effect of temperature is studied by altering the reaction temperature from 24 to 40 °C. HYSYS simulation results reveal that PFR yields the highest conversion compared to CSTR. Furthermore, consecutive CSTR configuration produces higher conversion than parallel CSTR configuration. Additionally, an increase in reaction temperature from 24 to 40 °C enhances the conversion of propylene oxide to propylene glycol. The reactant ratio 1:1 (propylene oxide to water) yields the highest conversion compared to other reactant ratios. The implications of these findings are to provide insights into more efficient and economical propylene glycol processes. The study suggests that PFR configuration, consecutive CSTR configuration, elevated reactor temperatures, and optimal reactant ratios can significantly improve the efficiency of propylene glycol formation.Keywords: Propylene Glycol, CSTR, PFR, Conversion, HYSYS Simulation
Harnessing Electrochemical Processes for Enhanced Struvite Crystallization: A Comprehensive Review Eko Ariyanto; Eka Sri Yusmartini; Gusmiatun Gusmiatun; Fatimah Fatimah; Mitayani Purwoko
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 10, No 1 (2025): February 2025
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The recovery of nutrients from contaminated water and wastewater can effectively mitigate both the nutrient burden on water resources and the associated environmental issues affecting aquatic ecosystems. This approach presents a valuable solution towards achieving environmental and societal sustainability. Consequently, struvite crystallization technology has emerged as a promising method for nutrient recovery, as the resulting precipitate can be recycled as a natural fertilizer. This review aims to elucidate the characteristics of struvite and provide insight into the fundamental process of crystallization. Furthermore, it comprehensively discusses the various variables that influence struvite crystallization, with a special focus on its application in urine-contaminated water using electrochemical methods. The review also highlights the advantageous on environmental and economic aspects. In addition, the limitations of struvite crystallization technology are examined, and future research prospects are explored, particularly in the context of electrochemical techniques which offer innovative solutions for controlled nutrient extraction. Ultimately, this work serves as a foundational resource for the future utilization of struvite crystallization technology in nutrient recovery, in response to the escalating environmental challenges and depletion of natural resources.Keywords: Struvite formation, electrochemical process, magnesium anode, struvite crystallization, natural fertilizer
Peningkatan Pengetahuan Masyarakat Melalui Pelatihan Pembuatan Minyak Atsiri di Kelurahan Plaju Darat Kota Palembang Eko Ariyanto; Netty Herawati; Robiah Robiah; Heni Juniar; Dian Kharismadewi
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 9 No. 3 (2023): Agrokreatif Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.9.3.355-361

Abstract

Lemongrass (Cymbopogon citratus) is a family medicinal herb commonly used as a kitchen spice. Lemongrass contains essential oils such as citral, myrcene, geraniol, citronellol, and α-oxo bisabolene that have a high-selling value and benefits as a fungal growth inhibitor, antibacterial, anti-insect, and anti-cancer. Socialization about the benefits of lemongrass essential oils and training on producing its essential oils was conducted through community service. The activity material was delivered through a presentation, and training in processing lemongrass to essential oils was conducted through a demo activity directly in front of participants. This community service activity was held in the Plaju Darat urban village meeting hall involving family welfare empowerment representatives, the head of the neighborhood, and the urban village community as participants. Pre-tests and post-tests were given to participants to determine the level of their understanding of the material presented. The test results improved participants’ understanding of the benefits of essential oils and their processing methods. It was concluded that participants understood the benefits of lemongrass essential oils and knew how to produce them.
Analysis of Service Quality Improvement Strategies for the PTSP Online System using E-SERVQUAL and Importance–Performance Analysis (IPA) Eko Ariyanto; Eri Zuliarso
SISTEMASI Vol 15, No 7 (2026): Sistemasi: Jurnal Sistem Informasi
Publisher : Universitas Islam Indragiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32520/stmsi.v15i7.6610

Abstract

The digital transformation of higher education has increased the demand for high-quality, efficient, and user-centered electronic services. Sunan Kudus State Islamic University has implemented the Online One-Stop Integrated Service (PTSP Online) system to support academic and administrative service delivery. However, a comprehensive evaluation of its service quality from the users' perspective has not yet been conducted. This study aims to evaluate the service quality of PTSP Online, identify the gaps between users' expectations and perceptions, and determine service improvement priorities as a basis for developing strategies to enhance digital service quality. A quantitative research approach was employed using the E-SERVQUAL and Importance–Performance Analysis (IPA) methods. Data were collected through a questionnaire survey involving 382 users who had previously accessed PTSP Online for academic services. The E-SERVQUAL analysis was conducted to measure the service quality gaps between users' perceptions and expectations across five dimensions: Efficiency, System Availability and Reliability, Responsiveness, Privacy Security Assurance, and Contact and Ease of Use. Subsequently, Importance–Performance Analysis (IPA) was applied to map service attributes according to their perceived importance and performance. The results indicate that the overall service quality of PTSP Online is satisfactory, with relatively small gap values across all dimensions. The Responsiveness dimension exhibited the highest positive gap (0.06), whereas Efficiency recorded the largest negative gap (−0.03). The IPA results identified service data and information accuracy (SAR4) as the highest priority for improvement, while nine service attributes were positioned in Quadrant II (Keep Up the Good Work). This study extends the application of the integrated E-SERVQUAL and IPA approach to the context of digital administrative services in Islamic higher education institutions, an area that remains underexplored in the existing literature. Furthermore, the findings provide empirical evidence to support PTSP Online administrators in formulating sustainable strategies for improving digital service quality.
Pengaruh Pupuk Kotoran Ayam Pada Berbagai Jarak Tanam Terhadap Terhadap Pertumbuhan dan Hasil Ubi Jalar Ungu Di Tanah Gambut ARIYANTO, EKO
Jurnal Sains Pertanian Equator Vol. 7 No. 3 (2018): AGUSTUS 2018
Publisher : Fakultas Pertanian Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jspe.v7i3.24837

Abstract

ABSTRAKPenelitian ini bertujuan untuk menemukan berapa jarak tanam dan dosis pupuk kotoran ayam terbaik pada ubi jalar ungu di tanah gambut, serta untuk mengetahui apakah terjadi interaksi antara jarak tanam dan dosis pupuk kotoran ayam pada ubi jalar di tanah gambut. Penelitian ini menggunakan Rancangan Petak Terbagi (Split PlotDesign) pola faktorial dengan dua faktor perlakuan terdiri dari jarak tanam (J) sebagai petak utama (mainplot) dan pupuk kotoran ayam (P) sebagai anak petak (subplot). Adapun jarak tanam terdiri dari tiga taraf, yaitu : j1 = (70 cm x 20 cm) j2 = (70 cm x 25 cm) j3 = (70 cm x 30 cm)dan pupuk kotoran ayam terdiri dari tiga taraf, yaitu : p1 = (10 ton/ha) p2 = (15 ton/ha ) p3 = (30 ton/ha). Masing-masingperlakuan diulang sebanyak 3 kali.Variabel yang diamati pada penelitian ini adalah, panjang batang utama (cm), klorofil daun (spad unit), Berat kering tanaman (g), Jumlah umbi Per Tanaman, Berat umbi segar Per Tanaman, Berat umbi segar Per petak. Berdasarkan hasil penelitian ini tidak ditemukan perlakuan berbagai jarak tanam dan dosis pupuk kotoran ayam yang terbaik untuk pertumbuhan dan hasil tanaman ubi jalar ungu di tanah gambut serta tidak terjadi interaksi antara jarak tanam dan pupuk kotoran ayam terhadap pertumbuhan dan hasil ubi jalar ungu di tanah gambut. Kata kunci:JarakTanam,UbiJalarUngu, KotoranAyam, Tanah Gambut
Perancangan dan Analisis Gerbang Logika Dasar dengan Menggunakan SIMULINK pada MATLAB Fadilah; Sofiah; Muhammad Hafiz Haikal; Eko Ariyanto
Jurnal Surya Energy Vol. 9 No. 2 (2025)
Publisher : Teknik Elektro, Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jse.v9i2.346

Abstract

Teknologi digital menjadi dasar bagi berbagai teknologi modern yang inamis dan terus berkembang. Secara fundamental, rekayasa digital mencakup beberapa konsep penting, termasuk gerbang logika, flip-flop, system bilangan, dan aritmatika biner. Aplikasi rekayasa digital sangat luas. Gerbang logika dasar seperti AND, OR, NOT, NAND, NOR, XOR, dan XNOR memiliki peran yang sangat fundamental dalam desain system digital. Penelitian ini bertujuan untuk meningkatkan pemahaman, efisiensi, dan kinerja system digital melalui pemodelan dan analisis menggunakan Simulink. Simulink digunakan untuk merancang model representatif dari gerbang logika dasar. Dengan melakukan simulasi untuk memvalidasi operasi dan respons gerbang logika, analisis dapat dilakukan untuk mengukur waktu respons, stabilitas, dan toleransi terhadap gangguan. Dengan mengombinasikan pendekatan pemodelan menggunakan Simulink dengan analisis kinerja, penelitian ini diharapkan dapat memberikan kontribusi yang signifikan dalam pengembangan sistem digital yang lebih canggih dan andal di masa depan.
Penyuluhan Mengenai Desain, Logo, dan Slogan untuk Meningkatkan Pemasaran Produk Bank Sampah Kenanga Palembang sri martini; Erna Yuliwati; Eka Sri Yusmartini; Elfidiah Martini; Dian Kharismadewi; Mardwita Martini; Eko Ariyanto
Jurnal Abdimas Mandiri Vol. 10 No. 2 (2026)
Publisher : UNIVERSITAS INDO GLOBAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36982/jam.v10i2.7560

Abstract

Permasalahan umum yang dihadapi oleh sebagian besar UMKM saat ini adalah ketatnya persaingan untuk memasarkan produk yang dapat bersaing dengan berbagai produk sejenis yang diproduksi oleh industri skala besar yang telah lebih dulu dikenal masyarakat. Salah satu hal yang menjadi tantangan bagi produk UMKM dalam persaingan di pangsa pasar umum dan komersial adalah masih relatif terbatasnya kemampuan untuk membentuk citra atau branding produk. Dengan demikian, Produk UMKM tidak hanya dituntut untuk dapat memperbaiki kualitas produk itu sendiri, tetapi yang tidak kalah pentingnya adalah meningkatkan citra produk dengan cara memberikan desain kemasan, logo, dan slogan yang menarik dan spesifik terhadap produknya.  Identifikasi visual tersebut diharapkan dapat membuat produk lebih mudah dikenali saat bersanding dengan produk sejenis di pangsa pasar komersial.  Penyuluhan dan pelatihan yang diberikan kepada masyarakat pelaku UMKM di Bank Sampah Kenanga di Kawasan 19 Ilir Kotamadya Palembang menunjukan peningkatan yang signifikan. Perbandingan hasil pra-test dan post-test pada sesi evaluasi terhadap wawasan dan keterampilan peserta terkait citra produk mereka yang berbentuk sabun padat, eco enzim, dan anyaman dekorasi ruangan berbahan dasar limbah organik menunjukan peningkatan sebesar 45%
Persiapan dan Penerapan Karbon Aktif NaOH dari Limbah Teh untuk Penghilangan Amonium dan Besi dari Air Sungai Heni Juniar; Elfidiah; Eko Ariyanto; Amsi Ramadani Pratama Pratama
Jurnal Migasian Vol 10 No 1 (2026): Jurnal Migasian
Publisher : LPPM Institut Teknologi Petroleum Balongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36601/jm.v10i1.394

Abstract

Penelitian ini bertujuan untuk memanfaatkan limbah ampas teh sebagai bahan baku pembuatan karbon aktif yang diaktivasi menggunakan NaOH serta mengkaji kemampuannya dalam menurunkan kadar amonium (NH₄⁺), besi (Fe). Proses pembuatan karbon aktif meliputi tahap pengeringan, karbonisasi, dan aktivasi kimia dengan variasi massa adsorben 5 g, 10 g, 15 g, 20 g, dan 25 g serta waktu kontak 1 jam. Analisis dilakukan menggunakan spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa peningkatan massa adsorben meningkatkan efisiensi penurunan ammonium sebesar 16,66%, namun kapasitas adsorpsi per satuan massa cenderung menurun. Untuk parameter besi (Fe), kondisi optimum diperoleh pada massa adsorben 15 g dengan hasil penurunan terbaik. Sementara itu, penurunan suhu paling signifikan terjadi pada massa adsorben 25 g, yaitu dari 32°C menjadi 27°C.
Co-Authors Abid Djazuli Adiyatma, Muhammad Riko Afrian Satria Nugraha Agung Firmansyah Agus Djoko Purnomo Ajie Tentara, Muhammad Alqorni, Muhammad Faris Amsi Ramadani Pratama Pratama Ani Melani Ani Melani Apriani, Yosi Arni Kartikaningtyas, Arni Ary Rahmady Pratama Ary Rahmady Pratama Azhar, Ade Siti Sarah Azzahra Aprilia Rosa Budi Santosa Budi Santosa Cecilia Andriani Cekmas Cekdin, Cekmas Devita Amalia, Devita Dian Dwi Lestari Dina Samei Dwiyani Dista Yoel Tadeus Dwi Zulfita Edy Wahyudi Eka Sri Yusmartini Elfidiah Elfidiah Martini Elsa Wardani Eni Sulastri Eri Zuliarso Fadilah Fakhruddin Mangkusasmito Farid Samsu Hananto Fatimah Feby Ardianto Galih Abriansyah Gita Sintya Gumelar B, Muhammad Adi Guna, Diah Septa erita Gusmiatun Gusmiatun Heru Winarno Ikbal Oktaviansyah Iman Setiono Ismi Islamiyati Remuso Juniar, Heni Kharismadewi, Dian Komaini, M Ali Krisna, Andy E Lia Katerina M. Taufiq Noor Rokhman Mardwita Mardwita Martini Megido, Adiel Meli Astriani Merisha Hastarina Mitayani Purwoko Muhammad Abimas Halimzikri Muhammad Alvin Pratama Muhammad Arief Karim Muhammad Dzaky Muzhaffar Muhammad Hafiz Haikal Muhammad Pebri Pratama Muhammad Zainudin Nanda Shafira Netty Herawati Oktaviansyah, Ikbal Pamungkas, Zaka Adi Priyo Sasmoko Ristiawan, Masde Rizal Alfa Rizki Rizanti Fadilah Robiah Robiah Robiah, Robiah Rosyid Ridlo Al-Hakim Ruliansyah, M. Wahyu Sasky Oktafian Nabilla Septiaranisi, Eci Dwi Shanti Mayasari Sofiah Sri Martini Sri Martini Sri Rahayu Sri Wardhani Suarni, Ertati Sungkowo, Aming Surachman Surachman Tjatur Supriyono Tri Anggraini Trikolas, Trikolas Wahyu Triaji Rahadianto Yanuar Zulardiansyah Arief Yayuk Ngesti Rahayu Yudistira Yuliwati, Erna Yuniarto Yuniarto, Yuniarto Yuyun Niyati Yuyun Niyati