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All Journal Natural Science: Journal of Science and Technology JURNAL KIMIA SAINS DAN APLIKASI Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Biologi Universitas Andalas Majalah Obat Tradisional BERITA BIOLOGI JURNAL BIOLOGI INDONESIA Jurnal Biologi Tropis JURNAL PENDIDIKAN TAMBUSAI Biota Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Unri Conference Series: Community Engagement Bioscientist : Jurnal Ilmiah Biologi Journal of Community Engagement Research for Sustainability Al-Khidmah Jurnal Pengabdian Masyarakat JURNAL KIMIA SAINTEK DAN PENDIDIKAN Jurnal Karya Abdi Masyarakat Jurnal Pengabdian Masyarakat Bangsa Molekul: Jurnal Ilmiah Kimia
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Pusat Penelitian Biologi LIPI, Jl. Ir. H. Djuanda No. 18, Bogor
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Produksi Bioetanol Dari Reject Of Stock Preparation Pada Proses Pembuatan Kertas Dengan Proses Hidrolisis Dan Fermentasi Sitinjak, Jufri Suanto; Chairul, Chairul; Muria, Sri Rezeki
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Indonesia is one of the largest paper producing and exporting countries in the world. Along with the increase in paper production, solid waste is generated from the reject of stock preparation. These reject of stock preparation has the potential to produce bioethanol because it contains a high cellulose content of 85,53% and hemicellulose 3,88% which is able to support the provision of renewable and environmental friendly fuels. The purpose of this study was to obtain the concentration of sulfuric acid (H2SO4) and hydrolysis temperature that can produce the highest sugar concentration in the reject of stock preparation hydrolysis process into sugar; to get the best pH value and fermentation time in the fermentation process by using Saccharomyces cerevisiae; and also get the percent yield of fermented sugar into bioethanol. The stages in this research is pretreatment of samples refined with a 1000 micron sieve (18 mesh), then the hydrolysis process with various concentrations of sulfuric acid (H2SO4) 6, 8, 10, 12% (v/v) and temperatures of 120oC, 130oC and 140oC for 30 minutes. Finally, the fermentation process was carried out with a variation of pH 4.5; 5; and 5,5 and fermentation time of 24, 48, 72 and 96 time. Based on the research results, the highest total sugar concentration of 9,8244 g/l was obtained in the hydrolysis process with a concentration of 12% (v/v) H2SO4 and a temperature of 140oC. The highest bioethanol concentration of 5.83 g/l was obtained in the fermentation process with the best pH 4.5 and fermentation time of 72 hours with the percent yield obtained at 85.88% (0.44 gram bioethanol / gram sugar). Keywords : Bioethanol, fermentation, hydrolysis, reject of stock preparation, Saccharomyces cerevisiae
Pembuatan Bioetanol Dari Ampas Sagu Menggunakan Proses Hidrolisis Dan Fermentasi Menggunakan Asam Sulfat Sebagai Katalis Dirgantara, Doni Ari; Chairul, Chairul; Zultiniar, Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Bioethanol is one of the alternative energy substitutes for petroleum. the wasted of sago can be used for bioethanol production. The main component of sago is used for the production of bioethanol is lignocellulose which consist of cellulose, hemicellulose and lignin. Ethanol is made by hydrolisiys and fermentation with the help of an acid catalyst and saccharomyces cerevisiae. This study aims to exploit the potential contained in sago waste as a producer of bioethanol by using the hydrolysis process method acid and time of the hydrolysis process, knowing the amount of sugar content resulting from the acid hydrolysis process and the time of the hydrolysis process, Knowing the ethanol content formed from the time variation in the fermentation process. The variables used are sulfuric acid concentration, hydrolysis time and also the time when fermentation. this research starts with the pre treatment of sago pulp, then hidrolysis with, with variation 1n, 2n, 3n in 145 degree during 20 minutes, 30 minutes, minutes, 40 minutes and 50 minutes. Then the results of hydrolysis fermented using sacchaomces cerevisiae. The fermentation process lasted for 24 hours, 48 hours 72 hours, 96 hours, and 120 hours. The results showed that the largest sugar concentration was obtained during concentration of H2SO4 3 N with time 50 minutes amounting to 25,08 g/L the greatest bioethanol content and levels are obtained from the fermentation during 96 hours is 4,751 g/L or 15 %. Keywords : bioethanol, fermentation, hydrolisis, sago pulp, pre-treatment
Pemanfaatan Ampas Sagu Untuk Produksi Bioetanol Hendra, Alfino; Chairul, Chairul; Zultiniar, Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Sago waste is a lignocellulosic material that can be used as a raw material for making bioethanol. The lignin content in lignocellulose can inhibit the rate of saccharification by blocking access to cellulase enzymes in cellulose. The pretreatment stage is the initial stage of the conversion process of lignocellulose to bioethanol with the aim of reducing lignin levels in lignocellulose. The next steps in the conversion of lignocellulosic material to bioethanol are saccharification and fermentation. In this study, the pretreatment stage was carried out using 10% NaOH solution at a 4 bar pressure reactor and a temperature of 140 oC, while the saccharification and fermentation stages were carried out simultaneously (SSF) with the help of cellulase enzymes and yeast Saccharomyces cerevisiae at temperature conditions of 30 oC and pH 5. The research was carried out by varying the ratio of sago waste with NaOH solution and the time of the pretreatment process. The ratio of sago waste and the solvent used were 1:5, 1:6, and 1:7, while the processing time started from 20 minutes, 30 minutes and 40 minutes.. The results of the initial treatment stage were then continued with SSF for 0 hours, 24 hours, 48 hours, and 72 hours with the highest bioethanol content of 12% at 72 hours. Keyword: Bioethanol, lignocellulose, pretreatment, sago solid waste, SSF
Pembuatan Bioetanol Dari Limbah Padat Sagu Menggunakan Enzim Selulase Dan Yeast Saccharomyces Cerevisiae Dengan Proses Simultaneous Sacharificatian and Fermentation (SSF) Nuryanti, Lidya; Muria, Sri Rezeki; Chairul, Chairul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Bioethanol is one of alternative energy that more friendly to environment because has an ability to reduce carbon dioxide emissions.  Biothehanol produced from fermentation process of glucose that comes from carbohydrate materials with the help of microorganism. The purposes of this research are to get the best operation condition that influenced by particle size and source of the nutrients to produce high level of biothanol and find the best time to do fermentation process. There are four step in this research, they are : preparation of material, equipment and nutrients sterilization, the making of inoculums and finally is scarification simultaneous fermentation process (SSF). Variations of particle size are 20-40 mesh and 60-80 mesh. Variations of nutrients source are come from urea and yeast extract. Fermentation process is done at pH 5 and room temperature. The highest level of biothanol produced by material with particle size  60-80 mesh and nutrients from urea. The best time for fermentation process is during 72 hours.  Key Words: Bioetanol, Cellulase enzym, Fermentation, solid waste of sago, Saccharomyces cerevisiae.
Pemurnian Bioetanol Hasil Fermentasi Nira Nipah Menggunakan Proses Destilasi-Adsorpsi Pada Variasi Rasio Adsorben Dengan Modifikasi Yuliana, Yuliana; Chairul, Chairul; Yenti, Silvia Reni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Bioethanol is used in the fuel mixture to the vehicle must be anhydrous so as not to cause corrosion in the engine, so that bioethanol should have a grade of 99% -100%. One of the main problems in the process of making bioetanol is the process of separation water with ethanol to get ethanol dry ( 99,95 % ). Purification of ethanol is usually done by distillation, but the distillation process has the disadvantage because of the azeotrope so hard to get dry ethanol. One method that is cheaper and easier is by distillation-adsorption using porous media. This study aims to obtain bioethanol from nypa using distillation purification process-adsorption using bentonite pellets, to obtain comparative data on the adsorption ability of bentonite pellets and data additions optimum starch and characterize the physical properties of bioethanol and qualitative test with GC. This research was conducted in several stages of the preparation of bioethanol, activation of bentonite, bioethanol purification by distillation-adsorption process, and product analysis. Variations of ratio adsorbent: bioethanol 1: 2, 1: 3, and 1: 4, and variations of the addition of starch varied namely 30, 35, 40 and 45% of the weight of bentonite, process temperature 78 °C, the activation of bentonite in physics. From the research results, obtained by the process of distillation-optimum adsorption with activated bentonite adsorbent physics with the addition of 35% starch with a ratio of 1: 2. Ethanol levels increased from 96% to 99.8% volume.Keywords: Bentonite, bioethanol, distilation- adsorption process, nypa, starch
Penentuan Suhu Dan Waktu Optimum Pada Tahap D0 (Delignifikasi Pertama) Proses Bleaching Pembuatan Pulp Silaban, Kardiman; Chairul, Chairul; Sembiring, Maria Peratenta
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

PT. Riau Andalan Pulp and Paper (RAPP) is a company has produced pulp and paper with Elemental Clorine Free (ECF) system in bleaching pulp stage. PT. RAPP used four process bleaching stage of pulp that’s D0 – EP - D1 – D2. Using clorine dioxide (ClO2) as bleaching pruff but EP stage were lignin extract process using oxygen and sodium dioxide (NaOH). One of the important thing in bleaching pulp is D0 stage process. For producing high quality pulp, one of important pruff must be recheck is temperature and time of bleaching pulp. The purpose of research was knowing effect of temperature in cooking timeof the first bleaching pulp stage process with accasia to quality pulp and economic value. Result of research to be used with get variation bleaching time 60, 70, 80, 90, 100 and 120 minutes and get variation bleaching temperature 65, 75, 80, and 90 (0C). in 650C and 60 minutes brightness was produced higher than else that is 66.42% ISO.
Peningkatan Kompetensi Bahasa Inggris Dasar Melalui Program Pengabdian di SDN 008 Teluk Jira Chairul, Chairul; Salsabilla, Dhiyya; Simanjuntak, Tagonna Serasi Asnita; Br. Silaban, Nesia Rachel Lina; Ardesta, Ribbi Sukma; Ginting, Theresia Ellyandra Destri; Presi, Familindo; Ningsih, Lisa Septia; Filda, Aiska; Simanjuntak, Billy Oktavianus; Hijran, Muhammad Hafiyyan Naufal
Jurnal Pengabdian Masyarakat Bangsa Vol. 2 No. 7 (2024): September
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v2i7.1297

Abstract

Penelitian ini mengkaji posisi bahasa Inggris dalam konteks politik bahasa Indonesia dan dampaknya terhadap pendidikan bahasa Inggris di tingkat sekolah dasar. Di Indonesia, bahasa Inggris tidak diprioritaskan dalam kebijakan bahasa nasional, seperti yang tercantum dalam Undang-Undang No. 24 Tahun 2009 yang menetapkan bahasa Indonesia sebagai bahasa utama pengantar di sekolah dan bahasa resmi di sektor publik dan swasta. Meskipun kebutuhan global terhadap bahasa Inggris terus meningkat, penghapusan pengajaran bahasa Inggris dari kurikulum sekolah dasar pada tahun 2013 dan pengurangan waktu pengajaran di sekolah menengah yang dimulai pada 2014 menunjukkan keputusan yang kontroversial. Keputusan ini berakar pada anggapan bahwa bahasa Inggris dapat berdampak negatif pada kinerja akademis siswa, meskipun penelitian menunjukkan bahwa penguasaan bahasa Inggris dapat mendukung, bukan mengganggu, penguasaan bahasa Indonesia. Artikel ini juga membahas implementasi program pembelajaran bahasa Inggris dasar di SDN 008 Teluk Jira, sebuah sekolah dasar di Desa Teluk Jira, Kabupaten Indragiri Hulu. Program ini, yang baru dimulai dua bulan lalu, mencakup semua tingkat kelas dari 1 hingga 6 dengan metode pembelajaran interaktif seperti menyanyi dalam bahasa Inggris dan praktik langsung. Evaluasi dengan pre-test dan post-test menunjukkan peningkatan signifikan dalam kemampuan bahasa Inggris siswa, serta peningkatan minat belajar mereka. Meskipun ada kemajuan, beberapa siswa masih memerlukan peningkatan dalam keterampilan menulis dan berbicara. Penelitian ini menggunakan pendekatan kuantitatif dengan metode eksperimen untuk mengukur efek program ini terhadap pengetahuan bahasa Inggris dasar siswa. Hasil menunjukkan bahwa pendekatan interaktif dan menyenangkan dalam pembelajaran dapat memotivasi siswa dan meningkatkan keterampilan bahasa Inggris mereka secara efektif. Artikel ini menyoroti pentingnya integrasi bahasa Inggris dalam kurikulum pendidikan dan strategi yang berhasil diterapkan untuk meningkatkan kualitas pendidikan di SDN 008 Teluk Jira.
EKSTRAKSI UNSUR FERRUM DARI LIMBAH PADAT PABRIK PULP DAN KERTAS Sembiring, Maria Peratenta; Heltina, Desi; Chairul, Chairul; Zulfansyah, Zulfansyah
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 6 No. 1 (2022): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v6i1.3012

Abstract

Functioning industrial waste as raw material or as a product is an achievement that will continue to be optimized, especially in industries where the amount of waste is significant. Pulp and paper mills produce waste in the form of solid, sludge, liquid and gas. The objective of this research is to extract the element ferrum contained in one of the solid wastes in pulp and paper mills. By using two fatty amine extractor, lauryl amine and stearyl amine with ethanol and n-hexane as solvents. The results showed that the use of stearyl amine as an extractor and n-hexane as a solvent with operating conditions of 4 hours and a dose of 5 grams gave the best results with an extraction yield of 10,964 mg/kg.
Menggali Potensi Kelapa Sawit Pada Peningkatan Ekonomi Masyarakat Desa Kelumpang Jaya Kecamatan Nibung Kabupaten Musi Rawas Utara Perspektif Ekonomi Islam Kusbiantoro, Sigit; Rianti, Rianti; Fitria, Fitria; Sakutteri, Riza; Ristia Ningsi, Maya; Satria, Fitra; Chairul, Chairul
Al-Khidmah Jurnal Pengabdian Masyarakat Vol. 4 No. 2 (2024): OKTOBER
Publisher : Institute for Research and Community Service (LPPM) of the Islamic University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56013/jak.v4i2.3380

Abstract

Nowadays, there is a lot of organic waste that is not managed properly and appropriately. This happens in Dukuh Mencek Village, Sukorambi District, Jember Regency, every day it produces an abundance of organic waste but it does not receive serious handling by the village government or related parties. This rubbish is usually thrown into the river or piled up behind the house, causing an unpleasant odor. Therefore, handling is needed, namely managing organic waste into compost through organic waste bins or composters, which can later bring economic benefits to the manager. Organic waste bins or what are called composters are special disposal places for organic waste that can directly process waste into compost. This research aims to reduce the waste problem that is currently occurring in the village and provide education to the local community that processed organic waste can be useful and bring economic benefits. This management is carried out by providing appropriate innovative technology in the form of making organic waste bins as a means of breaking down waste into compost. The method used is to start with the initial steps of preparing the necessary materials, preparing the tools used, and modifying the trash can. The results of the activity of making organic waste bins, namely composers, were successfully implemented by Collaborative Real Work Lecture (KKN) 160 students in Dukuh Mencek Village, Sukorambi District, Jember Regency. This organic or compost bin is implemented on village agricultural land next to the catfish pond which is managed by the local village PKK women. Organic waste that has been processed takes around 14 days to 30 days to become compost.
Aplikasi Kertas Bekas untuk Seed paper sebagai Kampanye Budaya Cinta Lingkungan di Desa Batu Belah Kecamatan Kampar Utami, Syelvia Putri; Evelyn, Evelyn; Yusnimar, Yusnimar; Komalasari, Komalasari; Chairul, Chairul; Saputra, Edy
Unri Conference Series: Community Engagement Vol 6 (2024): Seminar Nasional Pemberdayaan Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/unricsce.6.83-86

Abstract

The increase in writing paper waste is quite large in office and educational areas. Likewise in households and the surrounding community. Therefore, the utilization of used paper into seed paper is an interesting thing to be tested in village communities. This community service activity aims to educate the community regarding the utilization of used paper into seed paper. This used paper is soaked in water then printed with a paper printing tool, then given flower seeds. The paper that is ready to be printed is then dried. Seed paper that is no longer used is then planted. This activity is expected to be an alternative to empowering used paper in the Batu Belah Village community, Kampar District.
Co-Authors , Deviona, , Agrina, Agrina Amanda, Falencia Mauri ANDRIA AGUSTA Annisa, Syarifah Sari Apriliani, Prapita Ardesta, Ribbi Sukma Armaini, Armaini Arofi, Habib Astrandana, Yudi Besri Nasrul Br. Silaban, Nesia Rachel Lina Dahlan Tampubolon Darliansyah, Danny Desi Heltina Dewi Kusrini DEWI WULANSARI Dirgantara, Doni Ari Drastinawati Drastinawati, Drastinawati Emelda, Retta Emma Sri Kuncari Erizal Mukhtar EVELYN EVELYN Fadhlan, Adli Febiani, Hartika Febrialismanto, Febrialismanto Febriamansyah, Thoriq Alfath Febriansyah, Beni Fermi, Iwan Filda, Aiska Fitria Fitria Geovana, Savira Geovani Meiwanda Ginting, Theresia Ellyandra Destri Gunawan Tabrani Hasibuan, Muhammad Ilham Febrian Mahodum Hendra, Alfino Hengki Firmanda Hijran, Muhammad Hafiyyan Naufal Indra Lesmana Indriana, Hanifah Izmiarti Izmiarti, Izmiarti Khairunnisa, Syakira Nada Khoirul Amru Nst, Khoirul Amru Komalasari Komalasari Kusbiantoro, Sigit Lia Nazliana Nasution M. Idris Maria Peratenta Marpaung, Masdalena Marzuki, Salman Miftahul Jannah Muchtar, Erizal Muh Wawan Junuansyah, Muh Wawan Muhammad Furqan, Muhammad Najah, Muthiya Safinatun Nelvia Nelvia Ningsih, Lisa Septia Nurainas Nurainas Nurwijayanti Nuryanti, Lidya Ohi, Hiroshi Pertiwi, Vera Presi, Familindo Putri, Alivia Hardana Putri, Novia Anas Radith Mahatma Rahimmi, Anna Fithra Rahmah, Yulia Rianti, Rianti Ristia Ningsi, Maya Rohaya, Rohaya Romi Kurniadi Saefudin Saefudin Safitri, Nadira Sakutteri, Riza Salsabilla, Dhiyya Sandy, Athifah Faradilla Satria, Fitra Sayyidhani, Muhammad Hisna Sefmaliza, Rizka Serly Marselina Arifin, Serly Marselina Silaban, Kardiman Silvia Reni Yenti Simanjuntak, Billy Oktavianus Simanjuntak, Tagonna Serasi Asnita Sinaga, Raihan Daffansyah Sitinjak, Jufri Suanto Sitompul, Diantika Elena Sofnie M Chairul Sofnie Marusin Soleh Kosela Solfiyeni Solfiyeni Sri Budi Sulianti, Sri Budi Sri Endang Kornita Sri Rezeki Muria SYAIFUL BAHRI Syamsuardi Syamsuardi Syelvia Putri Utami Tasman, Annaya Qamara Tesri Maideliza Tri Murningsih, Tri Triani, Leni Villarul, Trya Nungky Wahyu Hidayat Wahyu, Pri Widodo, Prio Wulandari, Siti Rahmi Indri Wulandari, Zarah Ayu Yasminto, Habib Maulana Yasra, Firham Yaumil Mutia Akhir, Yaumil Mutia Yayan Setiawan, Yayan Yelmida Azis Yuanita, Mira Yuliana Yuliana Yuliasri Jamal Yusnimar Sahan Zahtamal Zahtamal Zainul, Zuherti Zulaspita, Witri Zulfansyah Zulfansyah Zultiniar, Zultiniar