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All Journal Jurnal Teknik ITS IPTEK The Journal for Technology and Science Jurnal Teknik Kimia Rekayasa Mesin AGRITEPA: Jurnal Ilmu dan Teknologi Pertanian Jurnal IPTEK Konversi Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Journal of Research and Technology BERDIKARI : Jurnal Inovasi dan Penerapan Ipteks SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal ABDINUS : Jurnal Pengabdian Nusantara Nusantara Science and Technology Proceedings International Journal of Eco-Innovation in Science and Engineering (IJEISE) Jurnal PkM (Pengabdian kepada Masyarakat) AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Jurnal Pengbdian Teknik Mesin JURNAL REKAYASA KIMIA & LINGKUNGAN
Erliyanti, Nove Kartika
Chemical Engineering UPN Veteran Jatim, Surabaya
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Journal : Konversi

 1 
TRANSESTERIFICATION OF BIODIESEL FROM KAPOK SEED OIL (Ceiba pentandra) Nove Kartika Erliyanti; Afida Kartika Sari; Achmad Chumaidi; Rachmad Ramadhan Yogaswara; Erwan Adi Saputro
Konversi Vol 10, No 2 (2021): Oktober 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i2.11247

Abstract

The purpose of this study was to determine the effect of KOH concentration and reaction time on the flash point and pour point of biodiesel from kapok seed oil. The biodiesel transesterification process is carried out in a batch reactor equipped with stirrer. The first step in this research is to reduce the free fatty acid content (esterification process). The second step is transesterification of biodiesel from kapok seed oil. The concentrations of KOH used in this research were 0.5, 1.0, 1.5, and 2.0% by weight of the oil and the reaction time were 0.25, 0.5, 1.0, and 1.5 hours. The operating conditions used in this study were a temperature of 60 oC and a pressure of 4 bar. The results showed that the concentration of KOH and reaction time had a significant effect on the flash point and pour point of biodiesel. The best flash point and pour point were obtained at a concentration of 0.5% KOH and a reaction time of 1.5 hours, which were 163 oC and -8 oC.
MASS TRANSFER COEFFICIENT OF EXTRACTION TANNIN COMPOUNDS FROM PAPAYA LEAVES WITH 96% ETHANOL SOLVENT Devri Eko Nurwahyuwono; Viola Eka Afrienty; Soemargono Soemargono; Nove Kartika Erliyanti
Konversi Vol 10, No 1 (2021): April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i1.10414

Abstract

Papaya leaves contain antibacterial compounds such as flavonoids, terpenoids, alkaloids, tannins, and saponins.. Tannins are compounds that are often used as antibacterial, antioxidant, pest control, plant fungi, tanners and as a corrosion inhibitor.In this study, the value of the mass transfer coefficient was determined. This study used two varied operating conditions, namely stirring rotational speed (100, 200, 300 rpm) and extraction time (30, 60, 90, 120, and 150 minutes). The extraction process is carried out using a stirred extractor at a temperature of 65 ° C.The value of the mass transfer coefficient obtained is 0.00004 second-1 (100 rpm), 0.00005 second-1 (200 rpm), and 0.00007 second-1 (300 rpm) for the best concentration obtained at 150 minutes with speed turn the stirrer 300 rpm
EFFECT OF NAOH CONCENTRATION AND RESIDENCE TIME ON THE CONVERSION OF REMOVAL OF Ca2+ AND Mg2+ IN SEAWATER CONTINUOUSLY USING AN BAFFLED REACTOR Dita Nurmala Tristanti; Harishul Ulum; Soemargono Soemargono; Nove Kartika Erliyanti
Konversi Vol 10, No 1 (2021): April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i1.10339

Abstract

The aims of this study were to determine the effect NaOH concentration and residence time on the conversion of calcium (Ca2+) and magnesium (Mg2+) removal as impurities. The concentration of NaOH used in this study were 0.05N, 0,1N, 0.15N, and 0,2N. The reactor used in this study is an baffled reactor equipped with air as a stirrer with air flow rates of 10000, 15000, 20000, 25000, and 30000 ml/minute. The ratio between the flow rate of seawater toward the flow rate of NaOH solution in this study was 85ml/minute : 25ml/minute.The results showed that the NaOH concentration and residence time had a significant effect on the conversion of removal of (Ca2+) and magnesium (Mg2+) impurities. The best results were obtained at 0.25N NaOH concentration, residence time of 13,08 minute, and gas flow rate of 30000ml/minute with removal conversion of calcium (Ca2+) of 73.083% and magnesium (Mg2+) of 89.621%.
ISOLATION OF CLOVE ESSENTIAL OIL BY FERMENTATION PROCESS Khurotul Ainiyah; Fita Andriyani; Soemargono Soemargono; Nove Kartika Erliyanti
Konversi Vol 10, No 1 (2021): April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v10i1.10415

Abstract

Clove essential oil is processed product of clove leaves which is used as perfumes and medicines. In general, the method used to extract clove leaf essential oil is the steam distillation method. This method has not maximized the yield essential oils produced because a lot of essential oils are still trapped in plant tissues. Modification of the essential oil isolation methods to produce more yields needs to be done, one of which is the fermentation method with the help Rhizopus oligosporus before the distillation process is carried out. The fermentation method is able to destroy the oil tissues on the leaves using enzymes produced by rhizopus oligosporus. The aims of this study were to isolate the essential oil clove leaves and look for the effect of the mass and fermentation time on the yield and content of clove leaf essential oil compounds produced. The results showed that the isolation  essential oils using fermentation methods was successfully carried out, the mass and fermentation time had a significant influence on the yield and content of essential oil chemical compounds. The best result was obtained at a mass of 35 grams with a fermentation time of 36 hours with a yield 0.32% and the content eugenol, caryopillene compounds obtained respectively at 93.43% and 2.28%.
REDUCTION OF CHROMIUM ION (Cr6+) WITH ION EXCHANGE RESIN IN LIQUID WASTE OF BATIK Abdurrahman Wahid; Neno Nidia Lifiana; Soemargono Soemargono; Nove Kartika Erliyanti
Konversi Vol 11, No 1 (2022): APRIL 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v11i1.12768

Abstract

Industri batik tergolong industri dalam jumlah besar dan berbahaya. Salah satu limbah yang dihasilkan adalah limbah cair yang mengandung ion krom (Cr 6+). Cairan limbah yang dikeluarkan sangat keruh, berwarna, dan memiliki pengelolaan yang busuk sehingga menimbulkan masalah serius bagi badan air, masyarakat, dan lingkungan. Limbah tanpa perlakuan khusus dibuang ke lingkungan. Sehingga metode pertukaran ion dapat mengurangi pencemaran lingkungan akibat limbah industri batik. Penelitian ini bertujuan untuk mengetahui pengaruh resin dalam menurunkan kandungan ion kromium pada limbah cair industri batik dengan menggunakan metode pertukaran ion. Yaitu dengan menggunakan dua kondisi operasi yang divariasikan yaitu berat resin (40, 60, 80, 100, dan 120 gram) dan kecepatan pengadukan (150, 175, 200, 225, dan 250 rpm). Ion kromium yang bermuatan positif akan bertukar dengan H +ion yang ditemukan dalam resin dowex. Sehingga kandungan krom pada limbah cair batik dapat dikurangi. Hasil tersebut diperoleh dari kecepatan pengadukan dan berat resin yang digunakan. Penurunan kandungan ion chromium tertinggi terjadi pada kecepatan pengaduk 250 rpm dengan berat resin 120 gram sebesar 97,86%.
Parameter evaluation of extraction using microwave hydrodistillation ultrasonic-pretreatment on yield of black pepper oil Panjaitan, Renova; Erliyanti, Nove Kartika; Putra, Sandy Buana; Wicaksono, Achmad Pemadi; Syahrani, Alza Nadilla; Amanda, Nabila Ayu
Konversi Vol 12, No 1 (2023): April 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v12i1.14984

Abstract

Black pepper is one of Indonesia's agricultural commodities, contributing foreign exchange to the country. However, the economic value of this commodity has decreased. It is influenced by the lack of diversified black pepper products, which of course, have a higher value than raw material marketing. One product diversification that can be developed is black pepper oil. In obtaining essential oils, appropriate methods and technology are needed so that the resulting product is of high quality and the process is carried out efficiently. The latest methods in extraction that are being developed are microwave and ultrasonic technology. Therefore, in this study, black pepper oil extraction was carried out using the microwave hydrodistillation method, whereas previously, ultrasonic pretreatment was given for the material. In this case, observations were made on the influence of extraction parameters. Based on the research, it was found that increasing the distiller size flask and ambient temperature could increase the percentage of essential oils yield. At the same time, the longer extraction time caused a decrease in yield. Decreasing the material particle size and increasing microwave power could cause an increase in yield up to a certain point. The best results in black pepper oil extraction were obtained under extraction conditions using a distiller size of 1000mL, extraction time of 60 minutes, at an ambient temperature of 30 oC, the particle size of 60 mesh, at a power of 450 W with a yield of 1.056%, with the characteristics of having a clear greenish colour and anRI of 1.480. These specifications comply with ISO 3061:2008 for essential oil from black pepper. Thus, these parameters can be considered in the black pepper oil extraction process to produce marketable products. As a suggestion for further research, modeling, and process scale-up can be developed.
Characterization of essential oil from red citronella leaves (Cymbopogon nardus L.) Wicaksono, Akhmad Permadi; Afandi, Fadila Ardiansyah; Wira, Guardiola Rosa; Adzani, Mayla Fayzza; Erliyanti, Nove Kartika
Konversi Vol 13, No 2 (2024): OKTOBER 2024
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v13i2.20129

Abstract

Citronella leaves are generally processed using conventional methods to obtain its essential oil. UMAE (Ultrasound-Microwave Assisted Extraction) method can be a replacement of conventional methods. UMAE is an extraction process assisted by ultrasonic waves and microwaves. NaCl solution can be used as a solvent in the UMAE method due to its large dielectric constant value. This research aimed to examinethe effect of microwave power and salt concentration on the characteristics of citronella leaf essential oil (density, refractive index, color, and solubility in alcohol). The extraction method used in this research was Ultrasound Microwave-Assisted Extraction (UMAE). The solvent and material used in this research were NaCl salt solution and Red Citronella Leaves (Cymbopogon nardus L.). The first stage carried out in this research was pre-treatment assisted by ultrasonic waves for five minutes at a temperature of 35 ᵒC, solvent concentrations of 0, 2, 4, 6, and 8% (w/v). The second stage was microwave-assisted extraction with a microwave power of 150, 300, 450, 600, and 750 Watts. The best results were produced at a concentration of 4% NaCl salt solution and 450Watt microwave power with yellow color, density value 0.8898 g/mL, refractive index 1.456, and solubility in alcohol 1:2. Overall, the quality of citronella leaves essential oil was in range of SNI 06-3953 1995. Therefore, the Red Citronella Leaves (Cymbopogon nardus L.) in the future can be considered as the alternative resource of citronella essential oil due to its good characteristics, among many varieties of citronella plants.
Unveiling the role of cellulose solvent systems in direct and sustainable silica amination: a new pathway beyond aminopropyl agents Ajiz, Hendrix Abdul; Widiyastuti, Widiyastuti; Setyawan, Heru; Muljani, Srie; Suryandari, Ade Sonya; Erliyanti, Nove Kartika
Konversi Vol 14, No 2 (2025): OCTOBER 2025
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v14i2.23610

Abstract

The functionalization of silica surfaces using sustainable amine sources is critical for advancing environmentally friendly materials in CO2 capture technologies. In this study, bio-based organosilanes derived from coconut fiber cellulose were explored as a green alternative to conventional aminosilane. Two solvent systems DMSO/NH4OH and NaOH/urea were utilized to dissolve and regenerate cellulose, enabling direct grafting onto silica surfaces. Comparative analysis revealed that while DMSO/NH4OH-dissolved cellulose exhibited a modest amine loading of 23.43% wt, comparable to aminopropyl-based modification (22.41% wt), the NaOH/urea system significantly improved the grafting efficiency, reaching 40.52% wt. This enhancement is attributed to urea’s amphiphilic properties, which facilitate both hydrophobic interactions and carbamate formation. The use of a sulfur-free NaOH/urea system not only improves performance but also aligns with green chemistry principles. These results demonstrate the potential of biomass-derived cellulose as a viable modifying agent for silica, paving the way for scalable, low-toxicity, and circular-economy-based material design strategies.
Sonochemical-assisted biosynthesis of silver nanoparticles using cymbopogon nardus L. essential oil: advanced process optimization through response surface methodology Wira, Guardiola Rosa; Maharani, Hijria Putri; Erliyanti, Nove Kartika; Panjaitan, Renova; Pujiastuti, Caecilia
Konversi Vol 14, No 1 (2025): APRIL 2025
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v14i1.21906

Abstract

This research investigates the fabrication and characterization regarding silver nanoparticles (AgNPs) utilizing essential oil derived from citronella leaves (Cymbopogon nardus L.) as a bioreductant. The synthesis method employed is sonochemistry, with variations in pH levels to determine optimal conditions for AgNPs yield. The use of essential oil as a bioreductant offers eco-friendly advantages and high efficiency in reducing metal ions. The results indicate that the highest yield of 8.67% was achieved at pH 9.0280 and 59.7190 minutes of sonochemical processing. Statistical optimization of processing parameters was conducted to maximize the yield of AgNPs, with the optimization process analyzed using Response Surface Methodology (RSM). The sequence of experimental runs, condition variations, and obtained results were determined using the Central Composite Design (CCD). The model demonstrates a strong correlation with the experimental data, exhibiting an adjusted R² value of 0.9684. A high F-value of 30.61 and a low p-value of 0.0009 suggest that the regression model is statistically significant and effectively accounts for variations in AgNPs yield. The lack-of-fit value for the model is 0.0359, indicating no significant discrepancy between the experimental data and the model's predicted values. The successful formation of AgNPs was confirmed, with absorption peaks observed within the 400–450 nm range.
Co-Authors Abdurrahman Wahid Achmad Chumaidi, Achmad Achmad Rizaldi Adzani, Mayla Fayzza Afandi, Fadila Ardiansyah Afida Kartika Sari Ahmad Rizaldi Ajiz, Hendrix Abdul Alwansyah, Yuki Amru Amanda, Nabila Ayu Andre Yusuf Trisna Putra Annisa Rachma Meydyanti Anugerah Dany Priyanto Anugerah Dany Priyanto, Anugerah Dany Ardika Nurmawati Aththobarani, Muhammad Daffa' Bellani Yunfa Winata Billah, Mu’tasim Billah, Mu’tasim Bimantara Hidayah Caecilia Pujiastuti Caecilia Pujiastuti Devri Eko Nurwahyuwono Dhining Ayu Dika Prasetyo Dita Nurmala Tristanti Dwi Nur Arinal Khaq Elsa Rosyidah Erwan Adi Saputro Fita Andriyani Fransisca Asteria Nandra Febiola Hamzah Fansuri Harishul Ulum Heru Setyawan Hidayah, Bimantara Ira Wikartika Kaffah, Elsyaff Visshilmi Khurotul Ainiyah Kusuma, Meidina Rafida Kusumawati, Yuly Laksminingsih, Arieanthi Maharani, Hijria Putri Mardiansyah, Yuda Eka Mohd Hafiz Dzarfan Othman Mu'tasim Billah Muchamad Fajar Alamsyah Mutasim Billah Nana Dyah Siswati, Anwar Zain and Mohammad Nandini , Atika Neno Nidia Lifiana Norizul Inayah Panjaitan, Renova Pujiastuti , Caecilia Pujiastuti, Caecilia Putra , Sandy Buana Putra, Andre Yusuf Trisna Putra, Sandy Buana Rachmad Ramadhan Yogaswara Rachmad Ramadhan Yogaswara Rachmad Ramadhan Yogaswara Rachmad Ramadhan Yogaswara Rachmad Yogaswara Rangga Kurnia Putra Renova Panjaitan Rina Yulianti Romalawati, Meiswita Silvana Dwi Nurherdiana Sintha Soraya Santi Soemargono Soemargono Soemargono Soemargono Sri Redjeki SRIE MULJANI Sunarto, Sandy Ryan Hendrawanto Suprianti, Lilik Suryandari, Ade Sonya Syafsir Akhlus Syahrani, Alza Nadilla Tahan Aprijal Simamora Tahan Simamora Tikat Deri Agratiyan Titi Susilowati triani, nova Viola Eka Afrienty Wicaksono, Achmad Pemadi Wicaksono, Akhmad Permadi Widiyastuti Widiyastuti Wira, Guardiola Rosa Yogaswara, Rachmad Ramadhan Yogaswara, Rachmad Ramadhan Yoghaswara, Rachmad Ramadhan Yuki Amru Alwansyah Zamzami, Muhammad Rifqy