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All Journal Jurnal Rekayasa Proses Jurnal Teknik Kimia USU Eksergi: Chemical Engineering Journal Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Seminar Nasional Teknik Kimia Kejuangan JURNAL INTEGRASI PROSES Jurnal Ilmiah Pangabdhi Konversi Jurnal Penelitian Karet Journal of Science and Applicative Technology Jurnal Rekayasa Proses Jurnal Teknik Kimia Jurnal Abdi Masyarakat (JAM) Jurnal Teknologi Bahan dan Barang Teknik Abdimasku : Jurnal Pengabdian Masyarakat Jurnal Graha Pengabdian Jurnal Riset Teknologi Pencegahan Pencemaran Industri REACTOR : Journal of Research On Chemistry And Engineering Jurnal Engineering JURNAL LENTERA KARYA EDUKASI: Jurnal Pengabdian Kepada Masyarakat TRIBUTE: JOURNAL OF COMMUNITY SERVICES Jurnal Teknik Kimia USU Journal of Industrial Community Empowerment DEDIKASI : Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian Masyarakat Pinang Masak TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Jurnal Rekayasa Proses Babakti : Journal of Community Engangement JURNAL REKAYASA KIMIA & LINGKUNGAN Jurnal Teknologi dan Inovasi Industri Jurnal Bioteknologi & Biosains Indonesia (JBBI) Jurnal Bioteknologi & Biosains Indonesia
Feerzet Achmad
Institut Teknologi Sumatera
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PENYEDIAAN INFORMASI STATISTIK DESA MELALUI PENGOLAHAN DATA DI PEKON BAMBANG, PESISIR BARAT, PROVINSI LAMPUNG Achmad, Feerzet
TRIBUTE: JOURNAL OF COMMUNITY SERVICES Vol. 4 No. 2
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/tribute.v4i2.29187

Abstract

Informasi statistik yang akurat dan terpercaya memainkan peran penting dalam pengambilan keputusan, pembuatan kebijakan, dan pengembangan masyarakat. Pekon Bambang, Pesisir Barat, Provinsi Lampung memiliki database tentang kependudukan, namun belum mampu mengolahnya menjadi informasi statistik yang mudah dipahami bagi aparat maupun masyarakat desa. Kegiatan Penyediaan informasi Statistik ini bertujuan untuk menyediakan informasi statistik yang berguna. Kegiatan ini juga bertujuan untuk memberikan aparat desa keterampilan dan pengetahuan yang diperlukan untuk mengelola data secara mandiri di masa mendatang. Kegiatan ini dilakukan melalui pendekatan partisipatif, melibatkan aparat desa sebagai pemangku kepentingan utama. Data dikumpulkan melalui wawancara, dan survey yang dilakukan dari rumah ke rumah. Selanjutnya, data yang terkumpul dianalisis dan disajikan dalam bentuk informasi statistik yang mudah dipahami menggunakan metode visualisasi dan penyajian data yang sesuai. Informasi satatistik tersebut diharapkan dapat digunakan aparat pekon untuk membuat keputusan, pembuatan kebijakan yang lebih efektif, serta memberikan kontribusi positif terhadap pembangunan Pekon secara keseluruhan.
Pembuatan Selai Kopi sebagai Inovasi Produk di Desa Tapak Gedung Kabupaten Kepahiang Bengkulu Fadhilah, Nurul; Achmad, Feerzet; Sylvia, Teny; Hatta, Madani
Jurnal Ilmiah Pangabdhi Vol 10, No 1: April, 2024
Publisher : LPPM Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/pangabdhi.v10i1.23247

Abstract

Coffee is one of the leading commodities in Indonesia. Indonesia is one of the largest coffee producers in the world. Jam is a type of semi-wet food through a cooking process made by adding a combination of fruits, sugar, without food additives or food additives that have been permitted. Coffee jam is one form of product diversification made from original ground coffee. In this jam making activity add granulated sugar as another main component. Tapak Gedung Village, which is one of the villages in Tebat Karai District, Kepahiang Regency, Bengkulu Province, has natural resources and coffee potential that supports. Coffee is the crop of the majority of the local population. Arabica and Robusta coffee types are the most widely cultivated. The level of coffee liking among the people is very high, and it has become a daily routine to consume it. Therefore, it is necessary to make coffee product innovations that aim to create a different sensation when consuming coffee, extend shelf life, and are expected to increase selling value that is beneficial to the local community. Furthermore, to support the success of making coffee jam, organoleptic test questionnaire sheets related to taste, aroma, color and texture were distributed to village and community officials.
Potensi Mikroorganisme Indigen Perairan Teluk Lampung sebagai Pendegradasi Masker Sekali Pakai (Disposable Face Mask) Deviany, Deviany; Achmad, Feerzet; Purwanti, Millennia Rischa; Yudhanti, Tri Febri
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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

Abstract

To prevent the transmission of COVID-19, the World Health Organization recommends the implementation of health protocols including using disposable masks. The use of disposable face masks has an impact on the emergence of mask waste in aquatic environments which results in pollution of water sources by microfibers. Degradation by indigenous microorganisms can be one of the solutions for handling waste that is environmentally friendly and cost effective. In this study, bacteria were isolated from the coast of Lampung Bay which was polluted with plastic waste and masks. Bacterial isolates were characterized by morphological and biochemical tests before the selected one being used for degradation. After seven days of incubation, gravimetric analysis showed that the mask pieces increased in weight when compared to the control. However, the degradation process can be shown by the results of Scanning Electron Microscope (SEM) analysis which shows damage in the form of holes on the surface of the mask when compared to the new mask and the control. SEM images also showed the presence of bacterial biomass remnants attached to the surface of the mask. Based on the results of this study, Lampung Bay indigenous microorganism isolate showed potential as a degrader of disposable face masks.
Degradasi Masker Sekali Pakai dengan Vermiremediasi dan Penambahan Isolat Bakteri Teluk Lampung Deviany, Deviany; Achmad, Feerzet; Rosafira, Adela; Aini, Syarifah
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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

Abstract

The use of disposable face masks during the Covid-19 pandemic has resulted in the emergence of mask waste polluting aquatic environments due to poor management. This waste will decompose into microfibers which accumulate in aquatic organisms. The combination of vermiremediation with the addition of degrading microorganisms can be one of the solutions for treating disposable mask waste. In this study, Eudrilus eugeniae, an earthworm species, was used in vermiremediation with variations in the treatment by adding indigenous bacterial isolate from the waters of Lampung Bay which has been proven able to degrade disposable masks. The results showed that the vermiremediation technique can be used to degrade disposable masks, indicated by a decrease in mask weight after incubation for two months in the amount of 0.03 grams and 0.05 grams for the treatment with the Eudrilus eugeniae and a combination of bacterial isolate respectively against the initial weight. Lampung Bay indigenous bacterial isolate helped accelerate the mask degradation process in the combined vermiremediation technique. The carbon, nitrogen, phosphorus, and potassium contents of the compost produced by the vermiremediation process have met the SNI for compost from domestic organic waste.
Pembuatan Tapal Batas di Pekon Malaya Kecamatan Lemong, Kabupaten Pesisir Barat, Lampung Bindar, Muhammad Abdul Mubdi; Kurniawan, Jatmiko; Fandi, Oki Okta; Manullang, Roida; Fergusta, Wilibrordus Bima Digdya; Achmad, Feerzet
Journal of Industrial Community Empowerment Vol 3, No 1 (2024): Published in April 2024
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v3i1.248

Abstract

The certainty of village boundaries is important in the management of rural areas. The lack of clarity in the boundaries between Pekon Malaya and Pekon Bambang in Lemong District, Pesisir Barat Regency, Lampung, has led to the need to establish clear boundaries between the two villages. This study aims to construct physical boundary markers between the two pekons to avoid territorial conflicts. The methods used include inter-village consultation, design, and physical construction of the boundary markers. The main result of this study is the creation of clear physical boundary markers between Pekon Malaya and Pekon Bambang, which can be used as a reference in resolving village boundary issues in the future. The conclusion of this study is that the construction of physical boundary markers can be an effective solution to address the problem of unclear village boundaries.
Pengaruh Konsentrasi Ekstrak Buah Belimbing Wuluh (Averrhoa bilimbi) sebagai Koagulan Alami terhadap Karakteristik Karet Klon PB 260 Achmad, Feerzet; Amelia, Devita; Pratiwi, Ayu; Wahyu Saputri, Laila; Deviany; Yuniarti, Reni; Suhartono; Suharto
Jurnal Teknik Kimia USU Vol. 11 No. 1 (2022): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (282.308 KB) | DOI: 10.32734/jtk.v11i1.8418

Abstract

Averrhoa bilimbi is a plant rich in benefits, one of which as natural coagulant. The aim of this research is to increase the potential of Averrhoa bilimbi as an environmentally friendly natural coagulant for the coagulation of rubber clone PB 260. The concentrations of Averrhoa bilimbi used were 45%, 55%, 65%, 75% and 85%. The characteristics of the rubber tested were dry rubber content (DRC), initial plasticity (Po) and Plasticity Retention Index (PRI). Based on the results of this study, the optimum concentration of Averrhoa bilimbi is 85% for latex coagulation time of 11 minutes with 33% DRC, 41% Po and 97% PRI. The highest the concentration of Averrhoa bilimbi used, the faster the coagulation process occurred. 2% formic acid was used as a chemical coagulant for comparison. From the results of this study, it can be concluded that Averrhoa bilimbi can be used as a natural coagulant producing rubber characteristics equal in quality as the ones using formic acid as a chemical coagulant and meets Indonesian Rubber Standard SNI 06-1903-2000.
Pengaruh Perlakuan Awal terhadap Karakteristik Bioetanol dari Limbah Kulit Singkong Karet (Manihot glaziovii) Yuniarti, Reni; Satria, Arysca Wisnu; Wiandini, Wandha; Zaezarini, Nabhila; Achmad, Feerzet; Yusupandi, Fauzi
Jurnal Teknik Kimia USU Vol. 13 No. 1 (2024): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v13i1.13174

Abstract

Rubber cassava peel waste (Manihot glaziovii) has a high carbohydrate content, so it is feasible to convert it into bioethanol. In general, bioethanol production consists of four steps, pretreatment, hydrolysis, fermentation, and purification. The purpose of this study was to determine the suitable treatment for obtaining bioethanol with the finest characteristics from rubber cassava peel using three treatment variations, the pretreatment process with variations in the dissolving ratio of sodium hydroxide (NaOH) 0.5 M of 1:10; 1:12.5; and 1:15 (w/v), the hydrolysis process with various concentrations of sulfuric acid (H2SO4) of 0.15 N; 0.30 N; and 0.45 N, and the fermentation process with variations in the fermentation time for 3 days, 7 days, and 9 days. Based on the research results, the highest glucose content was 0.91%, with variations in dissolving NaOH 0.5 M 1:15 (w/v) in the pretreatment process and variations in the concentration of 0.30 N H2SO4 in the hydrolysis process, while the highest ethanol content was 68.05% at a fermentation time of 7 days.
Pengaruh Kenaikan Laju Alir Fluida Panas dan Arah Aliran terhadap Kinerja Plate and Frame Heat Exchanger Achmad, Feerzet; Naldi, Roy; Uzlifah Janah, Dikri; Sufra, Rifqi; Yuniarti, Reni
Jurnal Teknik Kimia USU Vol. 13 No. 1 (2024): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v13i1.14321

Abstract

Plate and Frame Heat Exchanger (PFHE) is a plate and frame type heat exchanger that is efficient and effective in improving energy efficiency. Research using PFHE aims to determine the effect of increasing the flow rate of hot fluid on heat exchanger performance. This research was conducted at a flow rate variation of 0.7 L/min, 0.9 L/min, 1.1 L/min, 1.3 L/min, 1.5 L/min, 1.7 L/min, and 1.8 L/min with 180 seconds of testing each variation and recording data every 2 seconds. The cold fluid used is tap water and the hot fluid used is distilled water. The results showed that with the increase in hot fluid flow rate, the performance of PFHE also increased because the effectiveness of NTU (Ɛ-NTU) increased. The Ɛ-NTU value of unidirectional flow is 25.37% - 44.87% and in the opposite direction 37% - 68.39%. The largest Ɛ-NTU value in the countercurrent flow indicates that the countercurrent flow is more effective than the unidirectional flow. In addition, increasing the flow rate increases the Reynold's number (Nre) and Nusselt's number (Nu) which indicates the greatest convection heat transfer occurs at the highest flow rate.
FISIBILITAS PEMANFAATAN KOAGULAN ALAMI TERHADAP KARAKTERISTIK KARET PADA PRODUKSI SIR 20 Achmad, Feerzet; DEVIANY, DEVIANY; Nuranisa, Ayunda; Antika, Rindi; SUHARTONO, SUHARTONO; SUHARTO, SUHARTO
Jurnal Penelitian Karet JPK : Volume 41, Nomor 2, Tahun 2023
Publisher : Pusat Penelitian Karet - PT. Riset Perkebunan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/ppk.jpk.v41i2.876

Abstract

Tujuan penelitian ini adalah memahami pengaruh koagulan alami pada karakteristik karet SIR 20. Koagulan alami yang digunakan yaitu mangga kweni, asam gelugur, manggis, ciplukan, dan rambutan, karena bersifat asam dan banyak ketersediaannya. Koagulan alami diekstrak dan selanjutnya langsung digunakan sebagai koagulan, namun ekstrak ini juga dilakukan sentrifugasi untuk mendapatkan ekstrak yang lebih bersih. Koagulan kimia yang digunakan sebagai pembanding adalah asam formiat dengan konsentrasi 2%. Volume koagulan sentrifugasi dan tanpa sentrifugasi yang digunakan adalah 75 ml dicampur dengan 150 ml lateks, sehingga terjadinya proses koagulasi dan menghasilkan koagulum. Koagulum dikarakterisasi sesuai mutu SIR 20 dalam SNI 1993:2017 meliputi parameter Po, PRI, viskositas mooney, kadar abu, kadar pengotor, kadar zat menguap, dan kadar nitrogen. Pengaruh karakteristik karet dengan koagulan alami tanpa sentrifugasi menghasilkan nilai Po tertinggi dari ciplukan sebesar 44, PRI tertinggi dari manggis sebesar 75%, viskositas mooney tertinggi dari manggis, ciplukan, dan rambutan sebesar 81 MU, kadar zat menguap terendah dari mangga kweni sebesar 0,31% dan kadar nitrogen dari ciplukan sebesar 0,02%. Sedangkan kadar abu dan kadar kotoran terendah dihasilkan dari koagulan alami sentrifugasi dengan kadar abu terendah dari rambutan sebesar 0,192% dan kadar kotoran terendah pada mangga kweni sebesar 0,20%. Penggunaan koagulan alami sebagai koagulan lateks menghasilkan mutu karet yang lebih baik dibandingkan dengan koagulan kimia asam formiat 2%, tetapi penggunaan koagulan alami menghasilkan kandungan nitrogen yang tinggi. Koagulan alami dengan sentrifugasi dan tanpa sentrifugasi pada asam gelugur, ciplukan, rambutan yang digunakan telah memenuhi persyaratan SNI 06-1903-2017 SIR 20.
Efek laju alir dan arah aliran terhadap analisis performa alat penukar panas tipe shell and tube heat exchanger menggunakan SCADA Achmad, Feerzet; Tampubolon, Yosi Anugrah S.M; Fajri, Muhammad; Nury, Dennis Farina; Prahmana, Rico Aditia; Suhartono, Suhartono; Suharto, Suharto
Jurnal Rekayasa Proses Vol 17, No 2 (2023)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.77376

Abstract

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.
Co-Authors AA Sudharmawan, AA Aditya, Fajri Agnesia Putri Rini Agus Firmansyah Aldillah Herlambang Alfernando, Oki Alya Deenanti, Dara Amelia, Devita Ananda, Novia Putri Andri Sanjaya Anggi Oktasari Antika, Rindi Ardian, Muhammad Ikhwan Arie Sabdi Sembiring Armanda, Selvy Auriyani, Wika Atro Ay Ahmad Ayu Pratiwi, Ayu Az-zahra, Syifa Azizah, Rifka Noor Azzahra, Syifa Damayanti Damayanti Damayanti Damayanti Daulay, Yuliana Dennis Farina Nury Desi Riana Saputri Deviany Deviany Deviany, Deviany Devita Amelia Didik Supriyadi, Didik Donny Lesmana Dufan Saragih, Juro Edwin Rizki Safitra Enjel Saputri Ezra Sitorus, Fajar Fahmi, Yunita Fahni, Yunita Fajri Aditya Fandi, Oki Okta Febrina, Yane Fita Fergusta, Wilibrordus Bima Digdya Fikrah, Faizatul Fitranita, Vika Galeh Widharma Hatta, Madani Herri Susanto Herti Utami Hukama, Ikhwan Irene Seventina Lubis Jarwinda, Jarwinda Jayawarsa, A.A. Ketut Jerry Jerry Khaerunissa Anbar Istiadi Kurniawan, Jatmiko Lince Muis Lisa Angraini Lismeri, Lia Lisnurani, Lisnurani Mahardika, Melbi Mahendra, Lufi Eka Mahendra, Lufy Eka Manullang, Roida Manurung, Pandapotan Maruli Tua Mardiansyah, Rio Marlina, Titi Melani Putri Melbi Mahardika Muhammad Abdul Mubdi Bindar Muhammad Abdul Muhdi Bindar Muhammad Alfarizi Tazkia Muhammad Fajri Muhammad Ikhwan Ardian Muhammad Iqbal Muhammad Reahan Ramadhan Muhammad Triyogo Adiwibowo Muhammad Zulfikar Luthfi Musa Musa Musa Musa Mustafa Mustafa Mutiara Fajar Naldi, Roy Noorsaly, Siti Rizkyna Novia Putri Ananda Nuranisa, Ayunda Nurul Fadhilah Oktasari, Anggi Pandiangan, Kamisah Delilawati Prahmana, Rico Aditia Pramahadi Febriyanto Prasetyo, Rizky Dimas Purwanti, Millennia Rischa Qarimah, Akhlatul Qorimah, Akhlatul Rahmadini, Gustia Ratih Ainun Mardiyah Reni Yuniarti Ridho Ramadhan Ridwan Pratama Yudha Rifqi Sufra Rizky Dimas Prasetyo Rosafira, Adela Saputri, Desi Riana Sarah Fiebrina Heraningsih Satria, Arysca Wisnu Sembiring, Arie Sabdi Setianingrum, Nur setiawan, Darma Sida Mubin, Abror Simbolon, Nur Indah Simbolon, Yusril Mahendra Simparmin br Ginting Sinaga, Kristomi Yahya Sinurat, Riristiani Stevence Manalu, Laurentsius SUHARTO Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suhartono Suhartono Suhartono Suhartono Suhartono Suhartono Suhartono Sulaiman, Ali Khotib Suryanto, Ido Syarifah Aini Sylvia, Teny Tambunan, Yonathan Marasi Tampubolon, Yosi Anugrah S.M Uzlifah Janah, Dikri Variyana, Yeni Wahyu Saputri, Laila Wardani Putri, Elfira Wiandini, Wandha Widiyanti Aprilia Wika Atro Auriyani Yazid Bindar Yudhanti, Tri Febri Yuli Darni Yuniar Luthfia Listyadevi Yunita Fahni Yusuf, Reggina Aulia Yusupandi, Fauzi Zaezarini, Nabhila Zhofiroh, Nawrah Meisyah Muthi'ah Zuhri, Ahmad Azkal Azkiya