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All Journal Eksergi: Chemical Engineering Journal Journal Of Chemical Process Engineering (JCPE) Journal of Research and Technology Journal Pharmasci (Journal of Pharmacy and Science) Jurnal Ilmu Pendidikan dan Sains Islam Interdisipliner Journal of Science and Social Development Journal Of Chemical Process Engineering Nusantara Technology and Engineering Review
Trisna Kumala Dhaniswara
Universitas Nahdlatul Ulama Sidoarjo
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences

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Integrasi Aspen Plus Dynamics dengan Matlab Simulink (Studi Kasus Simulasi Proses Distilasi Propana-Isobutana) Azizah, Zahrotul; Dhaniswara, Trisna Kumala
Journal of Chemical Process Engineering Vol. 6 No. 2 (2021): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jcpe.v6i2.818

Abstract

Sebagian besar proses kimia berkaitan erat dengan proses nonlinier sehingga masalah pengendalian menjadi tantangan bagi seorang engineer dan industri kimia itu sendiri. Penelitian ini bertujuan mengintegrasikan antara Aspen Plus Dynamics dan Matlab Simulink sebagai upaya untuk menghilangkan teknik linierisasi sehingga proses yang bersifat nonlinier mampu dikendalikan secara maksimal. Metode yang digunakan adalah simulasi steady state menggunakan Aspen Plus pada proses distilasi dengan studi kasus pemisahan propana dan isobutana. Selanjutnya simulasi dynamic menggunakan Aspen Plus Dynamics. Proses yang telah dibangun di Aspen Plus Dynamics selanjutnya diintegrasikan dengan Matlab Simulink melalui blok AMSimulation. Hasil penelitian ini yaitu simulasi steady-state dan dynamics berhasil dijalankan. Aspen Plus Dynamics dan Matlab Simulink telah terintegrasi dan mampu secara bersama – sama dijalankan dalam satu waktu. Terdapat tiga controller yang terpasang yaitu refluk drum level control, top column pressure control, dan reboiler level control. Ketiga controller mampu mengendalikan proses dengan baik dibuktikan dengan proses dapat kembali ke setpoint.
Enhancing Fuel Oil from Polyethylene Waste: A Comparative Study of Catalyst Efficiency in Thermal Pyrolysis Dhaniswara, Trisna Kumala; Juliasti, Sri Rachmania; Mahfud, Mahfud
Eksergi Vol 22 No 2 (2025)
Publisher : Prodi Teknik Kimia UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v22i2.14780

Abstract

The growing accumulation of polyethylene (PE) plastic waste poses a significant environmental challenge, necessitating effective recycling and waste management solutions. Thermal pyrolysis has emerged as a promising method for converting plastic waste into valuable hydrocarbons. This study presents a comparative analysis of catalyst efficiency in the thermal pyrolysis of PE waste, with a focus on maximizing product yield and optimizing chemical composition. Various catalysts were evaluated to assess their impact on the degradation process, product distribution, and overall conversion efficiency. The research utilized 100 grams of PE waste in the form of 2 cm pellets. The catalysts tested—activated carbon, HZSM-5, and low-rank coal (LRC)—were each added at 10% of the plastic's weight. The experiments were conducted under varying conditions of time (30, 60, 90, 120, 150, and 180 minutes) and temperature (350, 450, 550, and 650°C). The thermal pyrolysis setup included an integrated furnace with glass column fractionation and four trays for collecting liquid pyrolysis products. Key parameters such as total yield, °API and calorific value were analyzed and compared to those of conventional fuel oil. The results demonstrated that the LRC catalyst outperformed both activated carbon and HZSM-5, achieving a yield of 61.10% at 650°C for 180 minutes. The pyrolysis product obtained using the LRC catalyst exhibited properties—such as °API and calorific value—comparable to those of conventional gasoline. This study highlights the potential of catalytic pyrolysis in managing plastic waste effectively, offering a viable approach to reducing plastic pollution while producing valuable hydrocarbon products. The findings underscore the importance of catalyst selection in optimizing pyrolysis outcomes, providing valuable insights for sustainable plastic waste management
PENGARUH PERLAKUAN AWAL SAMPAH ORGANIK TERHADAP PRODUKSI BIOGAS SECARA ANAEROBIC DIGESTION Dhaniswara, Trisna Kumala; Fitri, Medya Ayunda
Journal of Research and Technology Vol. 3 No. 2 (2017): JRT Volume 3 No 2 Des 2017
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v3i2.231

Abstract

The biggest problem currently in Indonesia is accumulated and uncontrolled of garbage amount everywhere, especially organic waste. There are also more methods to utilize waste. One of waste utilization is Biogas. Organic content in organic waste can be used as a substart source for anaerobic bacteria. Initial treatment of organic waste in this study used as a variable, namely chopped and blended. This initial treatment was done before it was mixed with other materials, ie cattle dung and water. 200% water was added to the reactor along with other variables. Temperature, pH and biogas volume were observed for 30 days. Initial treatment factor of organic waste as biogas production substrat showed blend treatment with decay, it had higher biogas production than others. Biogas volume was resulted 189.99 cm3 with a composition ratio of 50% cattle dung and 50% organic waste.Keywords: Biogas, Livestock Manure, Organic Waste.
PEMANFAATAN KOTORAN SAPI DAN SAMPAH SAYUR PADA PEMBUATAN BIOGAS DENGAN FERMENTASI SAMPAH SAYURAN Fitri, Medya Ayunda; Dhaniswara, Trisna Kumala
Journal of Research and Technology Vol. 4 No. 1 (2018): JRT Volume 4 No 1 Jun 2018
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v4i1.233

Abstract

Biogas is one solution to the use organic waste (livestock manure and vegetables). The aim of the research was to find out the effectiveness of livestock manure and fermentation of vegetable waste into biogas. This research was carried out using fermented vegetable waste for 10-12 days, then it was chopped and blended. The vegetable waste is then mixed with cow dung and water according to the determined variables. The mixture was put into a brown glass bottle and the bottle mouth was closed with a balloon and deposited for 8 days. Furthermore, the CO2 gas produced wasreleased and start to deposite again for 20-30 days. Trapped methane gas obtained from in the balloon was then stored to measure the produced volume and pH and also the methane gas. The results obtained from the research that is were the best pH obtained from vegetable waste blender fermentation treatment (% water100 and the percentage ofKS: SO was 75:25) was 7 and the largest volume was obtained from fermented chopped vegetable waste treatment (water% 300 and percentage KS: SO was 100: 0) of 78.73 cm3. Keywords: Biogas, Fermentation of Vegetable Waste, Cow Manure.
Produksi Bahan Bakar Minyak (BBM) dari Sampah Botol Plastik Bekas Air Minum dengan Metode Pirolisis Dhaniswara, Trisna Kumala; Dian Fahriani
Journal of Research and Technology Vol. 7 No. 1 (2021): JRT Volume 7 No 1 Jun 2021
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v7i1.413

Abstract

Garbage is the biggest contributor to environmental damage, especially plastic waste that is not processed properly. One of the problems in the community is the management of plastic waste, which until now has not been controlled. It is estimated that each person consumes 170 plastic bags each year and that around 500 billion to one trillion plastic bags are used worldwide. As well as more than 17 billion plastic bags distributed free of charge by supermarkets around the world for each year. In fact, if all the plastic bags on earth were opened, they could cover the entire surface of the earth up to 11 times. Plastic is a material that is very familiar in human life and has been considered a staple for household or domestic needs so that the presence of plastic waste is increasing. The purpose of this research is to convert plastic waste bottles used for drinking water into fuel oil using the pyrolysis method. The reactor used is pyrolysis with a temperature of 200 °C, 250 °C, 300 °C, 350 °C, and 400 °C for 30, 60, and 90 minutes. After the fuel is obtained, it is taken for analysis of its heating value, flash point, ash content, moisture content, and composition analysis. The results of this research will help the processing of plastic waste in addition to used plastic bottles.
Studi Kinerja Distilasi Packed Kolom dan Adsorpsi Silika Gel dalam Pemisahan Etanol–Air Dhaniswara, Trisna Kumala; Suryanti, Fenni
Nusantara Technology and Engineering Review Vol. 3 No. 2 (2025): Nusantara Technology and Engineering Review
Publisher : LPPM UNUSIDA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/fxsmqz34

Abstract

Pemurnian etanol dari campuran alkohol dan air merupakan tahapan penting dalam produksi bioetanol, terutama untuk meningkatkan kualitas produk akhir. Penelitian ini bertujuan untuk mengevaluasi kinerja pemisahan etanol melalui kombinasi proses distilasi menggunakan kolom berkemasan dan adsorpsi menggunakan silika gel. Variasi rasio refluks distilasi sebesar 1,36; 2,86; dan 3,00 mL/min serta temperatur adsorpsi 80°C, 90°C, 100°C, dan 110°C digunakan untuk menentukan kondisi operasi optimum. Hasil penelitian menunjukkan bahwa peningkatan rasio refluks meningkatkan konsentrasi etanol hasil distilasi, dengan nilai tertinggi diperoleh pada rasio refluks 3,00 mL/min. Pada tahap adsorpsi, temperatur 80°C menghasilkan konsentrasi etanol tertinggi dan persentase penyerapan air terbesar. Selain itu, penggunaan pelarut octanol memberikan kinerja pemisahan yang lebih baik dibandingkan dodecanol. Purification of ethanol from alcohol–water mixtures is an essential step in bioethanol production to improve the quality of the final product. This study aims to evaluate the performance of ethanol separation using a combination of packed column distillation and adsorption with silica gel. Variations in distillation reflux ratios of 1.36, 2.86, and 3.00 mL/min, as well as adsorption temperatures of 80°C, 90°C, 100°C, and 110°C, were applied to determine the optimum operating conditions. The results indicate that increasing the reflux ratio enhances the ethanol concentration in the distillate, with the highest value obtained at a reflux ratio of 3.00 mL/min. In the adsorption stage, an operating temperature of 80°C produced the highest ethanol concentration and the greatest water adsorption efficiency. In addition, the use of octanol as a solvent resulted in better separation performance compared to dodecanol.
Pengaruh Pretreatment Eceng Gondok (Eichhornia crassipes) melalui Variasi Pengeringan dan Ukuran Partikel terhadap Karakteristik Briket Biomassa Tanpa Perekat Cindi Erlin Carlita; Trisna Kumala Dhaniswara; Ahmad Musonnifin Aziz; Yulia Tri Rahkadima; Medya Ayunda Fitri; Zahrotul Azizah
Jurnal Ilmu Pendidikan dan Sains Islam Interdisipliner Vol. 5 No. 2 Mei 2026: Jurnal Ilmu Pendidikan dan Sains Islam Interdisipliner
Publisher : Yayasan Azhar Amanaa Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59944/jipsi.v5i2.708

Abstract

Eceng gondok (Eichhornia crassipes) merupakan gulma perairan yang memiliki pertumbuhan sangat cepat dan berpotensi menimbulkan permasalahan lingkungan. Namun, kandungan lignoselulosanya menjadikan eceng gondok berpotensi dimanfaatkan sebagai bahan baku biomassa untuk energi terbarukan. Penelitian ini bertujuan untuk menganalisis pengaruh pretreatment melalui variasi metode pengeringan dan ukuran partikel terhadap karakteristik biomassa eceng gondok sebagai bahan baku briket tanpa perekat. Proses pretreatment meliputi pencucian, pencacahan, pengeringan menggunakan sinar matahari, oven, serta kombinasi keduanya, kemudian dilanjutkan dengan proses grinding dan pengayakan. Analisa proksimat dilakukan untuk mengetahui perubahan kadar air, kadar abu, volatile matter, dan fixed carbon sebelum dan sesudah treatment termal. Hasil penelitian menunjukkan bahwa pretreatment termal mampu meningkatkan kualitas biomassa secara signifikan. Kadar air menurun dari 9,95% menjadi 6,50% dan volatile matter menurun dari 56,30% menjadi 24,80%, sedangkan fixed carbon meningkat dari 17,40% menjadi 43,16%. Metode kombinasi pengeringan menghasilkan biomassa yang lebih homogen dengan efisiensi energi yang lebih baik dibandingkan metode tunggal. Secara keseluruhan, proses pretreatment mampu meningkatkan karakteristik fisik dan termal eceng gondok sehingga berpotensi digunakan sebagai bahan baku biomassa alternatif yang ramah lingkungan dan berkelanjutan.
The Effect of Substrate Mixture Ratio on Biogas Volume in Co-digestion of Water Hyacinth (Eichhornia crassipes) and Cow Manure through Anaerobic Digestion Ahmad Musonnifin Aziz; Trisna Kumala Dhaniswara; Zahrotul Azizah; Ferdiansyah Ferdiansyah; Dharma Putra Proboncono; Achmad Faris
Jurnal Ilmu Pendidikan dan Sains Islam Interdisipliner Vol. 4 No. 4 November 2025: Jurnal Ilmu Pendidikan dan Sains Islam Interdisipliner
Publisher : Yayasan Azhar Amanaa Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59944/jipsi.v4i4.684

Abstract

Biogas is a renewable energy source that can be produced from organic waste, such as water hyacinth and cow dung. Utilizing these two materials through co-digestion has the potential to increase biogas production due to a better nutrient balance. This study aims to analyze the effect of the substrate ratio on the volume of biogas produced through anaerobic digestion. The method used is a Systematic Literature Review (SLR) by reviewing five relevant scientific articles based on certain inclusion and exclusion criteria. The parameters analyzed include the substrate ratio, biogas volume, and hydraulic retention time (HRT) or fermentation duration. The results of the study indicate that the substrate ratio has a significant influence on biogas production. Ratios that are close to balance, such as 50:50 and 47:53, tend to produce more optimal and stable biogas volume. Conversely, unbalanced ratios, such as 33:67, show varying results depending on operational conditions. Differences in biogas volume between studies are also influenced by other factors, such as retention time, raw material characteristics, and process conditions such as pH and temperature. The lignocellulose content of water hyacinth can inhibit the degradation process if not balanced with an adequate nitrogen source from cow dung. In conclusion, a balanced substrate ratio plays a crucial role in increasing biogas production, but it needs to be supported by controlling other operational parameters to achieve optimal and sustainable results.
Co-Authors Achmad Faris Ali Altway Anis Febriati Aziz, Ahmad Musonnifin Cindi Erlin Carlita Dharma Putra Proboncono Dian Fahriani Ferdiansyah Ferdiansyah Juliasti, Sri Rachmania Mahfud Mahfud Medya Ayunda Fitri Qurrota A’yuni Suryanti, Fenni Tri Widjaja Yulia Tri Rahkadima Yulia Tri Rahkadima Zahrotul Azizah