Articles
<![CDATA[The Effect of Binahong (Anredera cordifolia (Ten.) Steenis) Medicinal Plant Extract Addition on Glucose Detection ]]>
<![CDATA[Dennis Farina Nury]]>;
<![CDATA[Tri Widjaja]]>;
<![CDATA[Fredy Kurniawan]]>
<![CDATA[ Jurnal Sains dan Seni ITS Vol 8, No 2 (2019) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), ITS ]]>
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DOI: 10.12962/j23373520.v8i2.49944
<![CDATA[The potential of binahong (Anredera cordifolia (Ten.) Steenis) medicinal plant extract as glucose biosensor have been analyzed using cyclic voltammetry (CV) method. Glucose biosensor was prepared by modified electropolymerization technique of polypyrrole (PPy) to the active materials, such as binahong (Anredera cordifolia (Ten.) Steenis on the surface of gold electrode. Modified pyrrole polymerization was conducted at potential -1.3 to +1.3 V using voltammetry method with sweep rate 50mV/s for 30 cycles at pH 6.8. The performance of the modified sensor was tested in samples: glucose, urea, ascorbic acid and uric acid at the same concentration 10 mM, respectively. All samples were analysed using cyclic voltammetry method from -1.3 to +1.3 V with sweep rate of 50 mV/s in 0.1 M phosphate buffer at neutral condition (pH 7) room temperature. The best response of polypyrrole-binahong (Anredera cordifolia (Ten.) Steenis)-modified gold electrode was obtained during glucose measurement. No response detected from urea, ascorbic acid and uric acid. The result was proved that the modified electrode has a good potential for selective electrochemical sensor in determination of glucose.]]>
<![CDATA[Pemisahan Butanol dari Campuran ABE Menggunakan Software Aspen Plus: Pengaruh Refluks Rasio terhadap Kandungan Butanol ]]>
<![CDATA[Dennis Farina Nury]]>;
<![CDATA[Pramahadi Febriyanto]]>;
<![CDATA[Lisa Anggraini Ismi]]>;
<![CDATA[Rahmat Taufik Hidayah]]>
<![CDATA[ REACTOR: Journal of Research on Chemistry and Engineering Vol 3, No 1 (2022): Published in June 2022 ]]>
Publisher : <![CDATA[Politeknik ATI Padang ]]>
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DOI: 10.52759/reactor.v3i1.43
<![CDATA[Production of acetone-butanol-ethanol (ABE) through the fermentation process is one alternative that needs to be developed. Less economical in the ABE fermentation process is the difficulty of the separation process from the fermentation product and the by-products of the reaction. Among the separation process methods, such as extraction, distillation, adsorption, and gas stripping, the distillation method is still the most widely used method in the ABE separation process. The purpose of this study was to provide recommendations for predicting good ABE separation and producing optimum operating conditions to produce high % butanol content. Which is then simulated using Aspen Plus V11 software. This study varied the reflux ratio in the distillation column and the decanter operating temperature. The results showed that butanol purity reached 90.33% in the radfrac 1 column operated at a pressure of 1.3 atm with a reflux ratio of 5, the location of the 7th feed stage and the number of stages 11. Then proceed to the purification stage in the radfrac column 2 which is operated at a pressure of 2 atm with a reflux ratio of 5, the location of the 4th stage feed and the number of stages 5. The decrease in the reflux ratio of the radfrac column causes a decrease in the butanol content at the bottom so that the purity of butanol also decreases and decreases % recovery or recovery of butanol. This is also followed by the location of the feed stage, which is getting higher, and the number of stages is increasing.]]>
<![CDATA[Pengaruh Kondisi Temperatur Pirolisis Tandan Kosong Kelapa Sawit Terhadap Komposisi Produk Tar ]]>
<![CDATA[Dennis Farina Nury]]>;
<![CDATA[Muhammad Zulfikar Luthfi]]>;
<![CDATA[Siti Zullaikah]]>
<![CDATA[ REACTOR: Journal of Research on Chemistry and Engineering Vol 3, No 1 (2022): Published in June 2022 ]]>
Publisher : <![CDATA[Politeknik ATI Padang ]]>
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DOI: 10.52759/reactor.v3i1.47
<![CDATA[Oil palm empty fruit bunch (EFB) is one of the biomass wastes that have a great potential of a bioenergy resource due to its natural properties, such as high calorific value. The conversion of EFB biomass into valuable biofuels can achieved through biochemical and thermochemical processes. Tar (bio-oil), the liquid product from the pyrolysis is one of the most attractive biofuels. The study aims to determine the effect of temperature process of pyrolysis EFB on its tar production under droptube reactor. The results showed that maximum tar yield was 43,80% obtained at 500 °C. The EFB tar produced at 500 °C was also determined to have a higher of phenol compound at 51,9%. The high phenolic content indicates its potential to be used for the production of renewable phenolic resins. Hence, the present work of pyrolysis of EFB presents itself as a promising method to produce phenol rich tar (bio-oil) from biomass waste.]]>
<![CDATA[Trauma Healing Bagi Anak-Anak SDN 4 Sipa Rayo Jorong Bunga Tanjuang Terdampak Korban Gempa Pasaman ]]>
<![CDATA[Feerzet Achmad]]>;
<![CDATA[Melani Putri]]>;
<![CDATA[Agnesia Putri Rini]]>;
<![CDATA[Dennis Farina Nury]]>;
<![CDATA[Suhartono Suhartono]]>;
<![CDATA[Suharto Suharto]]>
<![CDATA[ Jurnal Abdi Masyarakat (JAM) Vol 8, No 1 (2022): JAM (Jurnal Abdi Masyarakat)-September ]]>
Publisher : <![CDATA[Universitas Mercu Buana ]]>
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DOI: 10.22441/jam.v8i1.15949
<![CDATA[Bencana gempa bumi yang menimpa Kabupaten Pasaman Barat mengakibatkan banyak kerugian yang dapat dirasakan secara fisik maupun non fisik. Kerugian berupa non fisik yang terjadi adanya trauma yang dimiliki terutama terjadi pada anak-anak pasca bencana gempa. korban yang selamat dan luka mengalami kerugian non fisik berupa trauma sehingga terganggu secara mental serta psikologis. Traumatik yang terjadi pada korban bencana gempa ini, bukanlah masalah yang dapat dibiarkan berlarut-larut. Korban bencana harus melakukan pemulihan trauma atau trauma healing, agar korban dapat melanjutkan kehidupan secara normal sebagaimana mestinya sebelum adanya bencana yang terjadi. Tujuan KKN Tematik ini dilakukan untuk menciptakan suasana yang lebih ceria dan dukungan secara psikis sehingga dapat memulihkan trauma yang terjadi setelah bencana gempa bumi. Metode KKN yang dilakukan ialah dengan mewujudkan bentuk nyata untuk pemulihan trauma melalui permainan (play therapy) dan dance therapy agar dari kegiatan ini diharapkan menghilangkan rasa takut yang terjadi serta meminimalisir kesedihan atas trauma yang dialami, agar anak-anak dapat kembali dalam keadaan ceria dan bahagia.]]>
<![CDATA[Implementasi Pupuk Cair Organik Masaro Terhadap Produktivitas Jagung Manis di Sabah Balau ]]>
<![CDATA[Dennis Farina Nury]]>;
<![CDATA[Arysca Wisnu Satria]]>;
<![CDATA[Deviany Deviany]]>;
<![CDATA[Mustafa Mustafa]]>;
<![CDATA[Akhmad Zainal Abidin]]>
<![CDATA[ Journal of Industrial Community Empowerment Vol 2, No 1 (2023): Published in April 2023 ]]>
Publisher : <![CDATA[Politeknik ATI Padang ]]>
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DOI: 10.52759/jice.v2i1.150
<![CDATA[This community service activity aims to increase corn production in Sabah Balau using POCI (Special Liquid Organic Fertilizer) products from Masaro. POCI is used as an organic fertilizer and its farming produces a higher production number, higher quality product, faster production rate while its production cost is lower. On the other hand, the problem of Indonesia is that national agriculture is stuck in inorganic chemical fertilization that has an impact on accelerating the degradation of agricultural land fertility. This matter can occur due to various problems, especially the culture of using chemical fertilizers that have been going on for too long. The activities carried out include socializing about recycling organic waste with POCI Masaro, conducting outreach activities about the benefits of POCI Masaro and practicing composting for corns. The results showed the enthusiasm of the community in participating to make POCI Masaro and demonstration plots. The output of this activity: Increased corn production, increased of knowledge and skills of community in making and applying POCI Masaro on plant and motivation of farmers to independently develop alternative organic fertilizers that are in accordance with farmers' needs.]]>
<![CDATA[Pengolahan Kelapa Menjadi Virgin Coconut Oil (VCO) dengan Metode Fermentasi Sederhana ]]>
<![CDATA[Dennis Farina Nury]]>;
<![CDATA[Yunita Fahni]]>;
<![CDATA[Reni Yuniarti]]>;
<![CDATA[Feerzet Achmad]]>;
<![CDATA[Deviany Deviany]]>;
<![CDATA[Yeni Variyana]]>
<![CDATA[ Journal of Industrial Community Empowerment Vol 2, No 2 (2023): Published in October 2023 ]]>
Publisher : <![CDATA[Politeknik ATI Padang ]]>
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DOI: 10.52759/jice.v2i2.215
<![CDATA[Coconut plant is frequently referred to as the plant of life since every part of it may be utilized and turned into a product. One of the commercial processed product by coconut is virgin coconut oil (VCO), which has many benefits to health properties. VCO is extracted from coconut milk from coconut fresh. The introduction of virgin oil (VCO) to partners aimed about VCO's advantages and development of appropriate technology that can be applied to local communities in Negeri Katon, Lampung Selatan. This community service activity program introduced fermentation method using yeast to convert coconut milk into VCO. The activity were conducted in three steps: i.e presentation of VCO process production and discussion, demonstration of making VCO together, and evaluation based on pre and post-test form results. Several analysis have been conducted including the percentage yield, density, viscosity and pH of the VCO. The evaluation of this activity was obtained from pre and post-test results. The results of the pre-test showed that among 50% the people of Negeri Katon really needs to the activity of making VCO by fermentation together. Based on the highest post-test result of 91%, it can be concluded that the VCO-making activities are very useful. Further development of activities, such as intensive practice in making VCO and training in packaging and selling VCO is very needed. Based on the results obtained, it can be concluded that the activity of making VCO by fermentation for the community of Negeri Katon is very necessary to be carried out in terms of utilizing coconut into VCO and creating business opportunities for the future.]]>
<![CDATA[Pengaruh Pre-Treatment Kimia dan Biologi Terhadap Produksi Biogas dari Kulit Kopi ]]>
<![CDATA[Dennis Farina Nury]]>;
<![CDATA[Muhammad Zulfikar Luthfi]]>;
<![CDATA[Ahmad Rifqiyan Farohi]]>;
<![CDATA[Tri Widjaja]]>
<![CDATA[ REACTOR: Journal of Research on Chemistry and Engineering Vol 4, No 2 (2023): Published in December 2023 ]]>
Publisher : <![CDATA[Politeknik ATI Padang ]]>
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DOI: 10.52759/reactor.v4i2.99
<![CDATA[Coffee, as a major commodity in Indonesia, produces a huge number of byproducts and residues during the processing process. Coffee wastes and byproducts produced during coffee berry processing are a major source of contamination and represent significant environmental challenges in the coffee production process. One promising alternative in utilizing coffee wastes is converting into energy source i.e, of biogas from coffee pulp. Coffee pulp has toxic components that act as a methane inhibitor; these type of biomass have a problem with the lignin degradation process, which binds cellulose and hemicellulose. The use of cow's rumen fluid for methane production from coffee pulp is still rare, particularly for rumen fluid. Chemical pretreatment was carried out using alkali-peroxide followed by rumen fluid pretreatment. The performance of biogas produced from coffee pulp (with and without pretreatment) using rumen fluid as an inoculum has been investigated. Biogas was produced in a semi-batch reactor with a working volume of 2 liters for 30 days. Removal lignin, SS, VFA, and biogas yield were measured. This study aims to determine the biogas production from coffee pulp using variation HRT 20 and 30 days. It can be concluded that chemical pretreatment of NaOH - H2O2 combination can reduce lignin up to 75.02%. The volume of biogas produced increased with chemical pretreatment and rumen fluid as compared to the substrate with only rumen pretreatment According to Gas Chromatography analysis, the methane gas obtained from chemical pretreatment and rumen with HRT 30 days is 47.93%, while the methane obtained from rumen pretreatment with HRT 30 days is 34.28%.]]>
<![CDATA[Biosynthesis of silver nanoparticles (AgNP) using leaves extract of Jatropha Curcas L. ]]>
<![CDATA[Nury, Dennis Farina]]>;
<![CDATA[Febriyanto, Pramahadi]]>;
<![CDATA[Arum, Amalia Sekar]]>;
<![CDATA[Mayastuti, Sherina]]>;
<![CDATA[Luthfi, Muhammad Zulfikar]]>
<![CDATA[ Konversi Vol 12, No 2 (2023): OKTOBER 2023 ]]>
Publisher : <![CDATA[Universitas Lambung Mangkurat ]]>
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DOI: 10.20527/k.v12i2.16610
<![CDATA[Due to the increased demand for ecologically friendly material synthesis techniques, biosynthesis of nanoparticles has drawn a lot of attention. It has been claimed that an environmentally benign method for producing silver nanoparticles (AgNPs) efficiently can be achieved utilizing leaves extract of the multifunctional plant Jatropha curcas. Maximum absorption were obtained from different types of solvents, in distilled water resulted at wavelength 428-434, meanwhile in ethanol 96% solvent, maximum absorption was obtained at wavelength 338-340 nm by using UV-Vis spectrophotometer, respectively. The results of FTIR formed on silver nanoparticles are O-H functional groups with distilled water and O-H functional groups, and C-O with 96% ethanol solvent. The particle sizes formed in distilled water and 96% ethanol solvents were 104.6 nm and 110.7 nm respectively with PI values of 0.341 and 0.644. Based on the results, (AgNPs) passes the nanoparticle range caused by agglomeration. It can be interpreted that the results of this synthesis are fine particles.]]>
<![CDATA[Efek laju alir dan arah aliran terhadap analisis performa alat penukar panas tipe shell and tube heat exchanger menggunakan SCADA ]]>
<![CDATA[Achmad, Feerzet]]>;
<![CDATA[Tampubolon, Yosi Anugrah S.M]]>;
<![CDATA[Fajri, Muhammad]]>;
<![CDATA[Nury, Dennis Farina]]>;
<![CDATA[Prahmana, Rico Aditia]]>;
<![CDATA[Suhartono, Suhartono]]>;
<![CDATA[Suharto, Suharto]]>
<![CDATA[ Jurnal Rekayasa Proses Vol 17, No 2 (2023) ]]>
Publisher : <![CDATA[Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada ]]>
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DOI: 10.22146/jrekpros.77376
<![CDATA[Panas atau kalor merupakan energi yang dapat berpindah dikarenakan perbedaan temperatur. Dalam melakukan perpindahan panas, dibutuhkan sebuah alat agar mendukung terjadinya perpindahan panas. Alat perpindahan panas yang digunakan pada penelitian ini adalah Shell and Tube Heat Exchanger (STHE). Penelitian ini menggunakan program SCADA yang dapat melakukan proses akusisi data dan kontrol terhadap variabel dependen yaitu laju alir fluida panas sehingga diharapkan data yang ditampilkan pada program SCADA dapat merepresentasikan pengaruh laju alir dan arah aliran terhadap analisis performa alat penukar panas tipe STHE. Penelitian dilakukan dengan memvariasikan laju alir fluida panas pada rentang 0.8 L/min – 1.8 L/min, dimana pada alat ini memiliki maksimum laju alir 2,1 L/min. Dari penelitian ini didapatkan bahwa efektivitas tertinggi sebesar 0,44 pada laju alir fluida panas 1.8 L/min dengan aliran fluida berlawanan arah. Dari hal ini, dapat disimpulkan bahwa laju alir fluida dan arah aliran fluida mempengaruhi efektivitas alat penukar panas, namun bukan hanya mempengaruhi efektivitas alat penukar panas, laju alir dan arah aliran fluida juga mempengaruhi analisis yang lainnya seperti bilangan Reynold, perubahan temperatur rata-rata logaritmik, Number of Transfer Unit (NTU), dan juga efektivitas NTU. Laju alir pada alat penukar panas berpengaruh terhadap besarnya panas yang akan diserap maupun dikeluarkan sehingga, ketika laju alir mengalami peningkatan maka efektivitas alat penukar panas juga akan mengalami peningkatan dikarenakan hal ini dipengaruhi oleh besarnya panas yang dikeluarkan maupun yang diterima.]]>
<![CDATA[Efek laju alir dan arah aliran terhadap analisis performa alat penukar panas tipe shell and tube heat exchanger menggunakan SCADA ]]>
<![CDATA[Achmad, Feerzet]]>;
<![CDATA[Tampubolon, Yosi Anugrah S.M]]>;
<![CDATA[Fajri, Muhammad]]>;
<![CDATA[Nury, Dennis Farina]]>;
<![CDATA[Prahmana, Rico Aditia]]>;
<![CDATA[Suhartono, Suhartono]]>;
<![CDATA[Suharto, Suharto]]>
<![CDATA[ Jurnal Rekayasa Proses Vol 17, No 2 (2023) ]]>
Publisher : <![CDATA[Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada ]]>
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DOI: 10.22146/jrekpros.77376
<![CDATA[Panas atau kalor merupakan energi yang dapat berpindah dikarenakan perbedaan temperatur. Dalam melakukan perpindahan panas, dibutuhkan sebuah alat agar mendukung terjadinya perpindahan panas. Alat perpindahan panas yang digunakan pada penelitian ini adalah Shell and Tube Heat Exchanger (STHE). Penelitian ini menggunakan program SCADA yang dapat melakukan proses akusisi data dan kontrol terhadap variabel dependen yaitu laju alir fluida panas sehingga diharapkan data yang ditampilkan pada program SCADA dapat merepresentasikan pengaruh laju alir dan arah aliran terhadap analisis performa alat penukar panas tipe STHE. Penelitian dilakukan dengan memvariasikan laju alir fluida panas pada rentang 0.8 L/min – 1.8 L/min, dimana pada alat ini memiliki maksimum laju alir 2,1 L/min. Dari penelitian ini didapatkan bahwa efektivitas tertinggi sebesar 0,44 pada laju alir fluida panas 1.8 L/min dengan aliran fluida berlawanan arah. Dari hal ini, dapat disimpulkan bahwa laju alir fluida dan arah aliran fluida mempengaruhi efektivitas alat penukar panas, namun bukan hanya mempengaruhi efektivitas alat penukar panas, laju alir dan arah aliran fluida juga mempengaruhi analisis yang lainnya seperti bilangan Reynold, perubahan temperatur rata-rata logaritmik, Number of Transfer Unit (NTU), dan juga efektivitas NTU. Laju alir pada alat penukar panas berpengaruh terhadap besarnya panas yang akan diserap maupun dikeluarkan sehingga, ketika laju alir mengalami peningkatan maka efektivitas alat penukar panas juga akan mengalami peningkatan dikarenakan hal ini dipengaruhi oleh besarnya panas yang dikeluarkan maupun yang diterima.]]>
