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Zainal Arifin
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Department Of Chemical Engineering, Politeknik Negeri Samarinda Jl. Dr. Ciptomangunkusumo Kampus Gunung Panjang Samarinda 75131
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Kota samarinda,
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INDONESIA
JIMSI
Published by Politeknik Negeri Samarinda
ISSN : 27759083     EISSN : 27759075     DOI : http://dx.doi.org/10.46964/jimsi
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Materials Science & Nanotechnology
This Journal publishes current original research on Chemical Engineering and Chemistry, especially on catalysts, biofuel, petro and oleo, and enviroment.
Arjuna Subject : Teknik Kimia (semua kategori) - Kimia Proses dan Teknologi
Articles 20 Documents
 1   2 
PEMBUATAN BIOETANOL DENGAN TEKNI IMOBILISASI SEL Saccharomyces cerevisiae DARI LIMBAH KERTAS HVS Dea Prisca Amanda; Marlinda Marlinda; Ramli Ramli; Andri Kurniawan
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 1, No 2 (2021): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/jimsi.v1i2.865

Abstract

Paper production in Indonesia based on the Center for Pulp and Paper (BBPK) reaches 12.98 million tons/year. Paper that has been used and thrown away can cause problems for the environment. The cellulose content in paper is very high so that it can be used as a raw material for bioethanol. The fermentation technique used is modern biotechnology, namely the cell immobilization method. This method uses an inert material that is not soluble in the substrate. The purpose of this study is to determine the effects of the concentration of immobilized saccharomyces cerevisiae cells on bioethanol levels to increase the levels of bioethanol produced. Paper was hydrolyzed with 2N HCl to break down cellulose into glucose which would be used as a substrate. The research variable used was the concentrations of immobilized saccharomyces cerevisiae cells, namely 0, 5, 10, 15, 20, and 25% (w/w) in substrate. Fermentation was carried out in a batch system for 4 days. Immobilization of saccharomyces cerevisiae cells was made using 10% Na-Alginate and 7% CaCl2. Ethanol concentration was analyzed using gas chromatography and cell number analysis using gravimetry. The results showed the maximum concentration of bioethanol at a concentration of 15% cell immobilization. Where the concentration of bioethanol was 8.1876% and the number of cells was 1.84 g cells/LKeywords: bioethanol, fermentation, immobillization, paper, saccharomyces cerevisiae
PENGARUH JENIS DAN KONSENTRASI FIKSASI TERHADAP KUALITAS WARNA KAIN BATIK DENGAN PEWARNA ALAM SABUT KELAPA Dina Ayu Sukmawati; Ahmad M Fuadi; Agus Haerudin
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 2, No 1 (2022): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (795.573 KB) | DOI: 10.46964/jimsi.v2i1.1470

Abstract

Batik merupakan warisan budaya Indonesia yang harus dijaga. Pewarnaan kain batik umumnya menggunakan bahan sintesis, namun pewarna sintesis dapat menimbulkan dampak negatif terutama untuk lingkungan. Maka pewarna alam lebih dipilih karena keunggulannya yang lebih murah, ramah lingkungan, dan menghasilkan warna yang khas. Pada penelitian ini dilakukan upaya pengembangan zat warna alam dengan memanfaatkan sumber pewarna potensi lokal yaitu limbah sabut kelapa. Penelitian ini bertujuan untuk mengetahui pengaruh jenis dan konsentrasi zat fiksasi terhadap ketahanan luntur warna pada kain batik. Metode penelitian ini eksperimen dengan melakukan perlakuan pada variasi jenis zat fiksasi yakni tawas dan tunjung, serta variasi konsentrasi zat fiksasi 5%; 7,5%; dan 10%. Hasil penelitian menunjukkan bahwa ekstrak sabut kelapa  dapat dimanfaatkan sebagai zat warna alami. Hasil uji beda warna L*,a*,b* dan identifikasi kode warna serta cahaya warna melalui encycolorpedia, arah warna yang dihasilkan dari ekstrak sabut kelapa variasi fiksasi tawas menghasilkan warna red-orange sedangkan pada fiksasi tunjung menghasilkan warna orange. Hasil uji ketahanan luntur dan penodaan warna menunjukkan bahwa penggunaan zat fiksasi tawas didapatkan nilai ketahanan luntur yang lebih baik dibandingkan dengan zat fiksasi tunjung sedangkan pada konsentrasi zat fiksasi tidak memberikan pengaruh terhadap ketahanan luntur warna karena konsentrasi zat fiksasi yang dibutuhkan sudah optimal.
PENENTUAN MODEL KINETIKA DINAMIS PADA ADSORPSI LIMBAH CAIR ZAT WARNA REMAZOL YELLOW FG ARTIFISIAL MENGGUNAKAN KOMPOSIT KARBON AKTIF-KITOSAN Galuh Arya Ramdani; Zainal Arifin; Muhammad Kasim
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 1, No 1 (2021): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (744.783 KB) | DOI: 10.46964/jimsi.v1i1.635

Abstract

Dye waste that contains synthetic dyes like Direct Black 38, Remazol Yellow FG, and Reactive Red 2 in high concentration, is the main source of water pollution which can decrease the quality and ecosystem of water due to its difficult degradation properties. Physical and chemical adsorption method using adsorbent like activated carbon-chitosan composites can be carried out to decrease the concentration of dye waste. The purpose of this research is to find out the adsorption capacity of activated carbon-chitosan composites on Remazol Yellow FG dye waste using fixed bed column continuous system. The composites were made by adding 1:1 of the activated carbon into chitosan solution and then dropping it into the 15% NaOH-96% Ethanol in 4:1 v/v as the coagulant. Then, composites were used to adsorb the dye waste in order to find out the adsorption capacity. Next, samples were analyzed using UV-Vis Spectrophotometer. The results showed the optimum point was on 8 mL/min flow rate. The best adsorpstion capacity of 1.21781 mg/g was obtained in Thomas and Yoon-Nelson’s Models.
KAPASITAS ADSORBSI LOGAM KROMIUM (VI) DENGAN ADSORBEN PEKTIN DARI KULIT LEMON Mardhiyah Nadir; Yuli Patmawati; Aditya Alexander
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 1, No 2 (2021): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/jimsi.v1i2.869

Abstract

Chromium is a heavy metal that can pollute the aquatic environment. Tackling water pollution can be done by using the adsorption method using pectin from lemon peel. This study aims to determine the adsorption equation of chromium (VI) with pectin adsorbent from lemon peel and to determine the effect of adsorbent mass on chromium (VI) metal uptake. The lemon peel was extracted with a mass of 15 grams using the help of Microwave Assisted Extraction (MAE) with an extraction time of 26 minutes using 300 Watt power. The adsorption process was carried out with mass variations (1.2 gr; 1.3 gr; 1.4 gr; 1.5 gr and 1.6 gr) with a contact time of 1 hour and a stirring speed of 250 rpm. The analytical method used to measure the adsorption value is Atomic Absorption Spectrophotometry (AAS). The Cr (VI) adsorption equation follows the Langmuir equation. The results of this study indicate that the optimum conditions for adsorption, namely the pectin mass of 1.5 g, can reduce Cr(VI)  levels by 0.0452 mg / g (70.23%).
HIDROLISIS AMPAS TEBU MENJADI FURFURAL DENGAN KATALISATOR ASAM SULFAT BERBANTUKAN GELOMBANG MIKRO Arief Adhiksana; Cantika Nawang Wulan; Nurul Hidayatul Islamiyah
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 2, No 1 (2022): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (705.041 KB) | DOI: 10.46964/jimsi.v2i1.1472

Abstract

Tebu yang merupakan bahan proses pembuatan gula memiliki tingkat produksi yang tinggi di Indonesia. Hasil samping dari proses ini berupa ampas tebu yang jumlahnya mencapai 35–40% dari tebu gilingan. Pemanfaatan kembali ampas tebu masih belum optimal, padahal ampas tebu kaya akan pentosan dengan persentase 29,97% yang dapat diolah menjadi furfural dengan metode hidrolisis. Tujuan dari penelitian ini adalah mengetahui pengaruh konsentrasi katalisator asam sulfat dan waktu hidrolisis dalam pembuatan furfural dari ampas tebu berbantukan gelombang mikro. Pada penelitian ini ampas tebu dikeringkan dan diayak dengan ukuran -20 +70 mesh. Proses dijalankan menggunakan 15 gram ampas tebu pada variasi konsentrasi asam sulfat antara 1,5 M sampai dengan 3,5 M sebanyak 450 mL dan variasi waktu hidrolisis antara 20 menit sampai dengan 40 menit. Campuran dihidrolisis dengan bantuan gelombang mikro berdaya 600 W 50 Hz. Hidrolisat disaring dan filtratnya ditambahkan dengan kloroform untuk memisahkan furfural dengan sisa asam dan air. Produk furfural dianalisa kualitatif menggunakan anilin asetat dan analisa kuantitatif dengan Gas Chromatography (GC). Berdasarkan hasil analisa kualitatif, perubahan warna sampel dari kuning menjadi merah menandakan terbentuknya furfural. Akan tetapi, konsentrasi furfural yang didapatkan masih belum diketahui hasilnya secara kuantitatif menggunakan GC. 
POTENSI DAUN WARU DAN KULIT APEL SEBAGAI BAHAN AKTIF HAIR TONIC UNTUK MENGATASI RAMBUT RONTOK Fitri Nur Hidayah; Erfa Kurnia Prastiwi; Fitriana Saputri; Rois Fatoni
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 1, No 1 (2021): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (722.126 KB) | DOI: 10.46964/jimsi.v1i1.613

Abstract

The problem of hair loss is often underestimated, because it is considered normal and experienced by many people. Though the problem of hair loss should be watched out for. Most people today solve the problem of hair loss by using cosmetics on the market in the form of hair tonics. If used too often, the synthetic chemicals contained in it have the potential to cause damage to the hair and scalp. This requires natural ingredients such as hibiscus leaves and apple skin as active hair tonic ingredients. The purpose of writing this scientific article is to explore the potential of hibiscus leaves (Hibiscus tiliaceus L) and apple skin (Malus domestica) as hair tonic to treat hair loss. The writing method used is narrative review. Journals and articles obtained from online databases are compared and then analyzed to obtain results relevant to the purpose of scientific articles. The results of previous research on hibiscus leaves showed that the hair tonic formulation in testing the appearance and aroma had good information, was attractive and did not sting. Apart from that, it also meets the requirements in testing pH, homogeneity, stability and viscosity. Meanwhile, apple skin contains polyphenols which are active antioxidants with a power of 100 times more effective than vitamin C and 25 times higher than vitamin E and also able to strengthen hair roots and overcome dandruff. Utilization of hibiscus leaves and apple skin as active ingredients for hair tonic production is considered effective as a form of hair care to prevent hair loss.
PEMBUATAN PUPUK ORGANIK CAIR DARI URINE SAPI DENGAN VARIASI JENIS BIOAKTIVATOR Firda Anisa; Fitriyana Fitriyana; Noorma Kurnyawaty
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 1, No 2 (2021): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/jimsi.v1i2.870

Abstract

Cow urine is one of the waste materials or the results of the excretion system of cow metabolism that greatly interferes with the community around the farm if not processed properly. Cow urine in general contains macro nutrients, including: 1.4 - 2.2% Nitrogen, 0.6 - 0.7% Phosphorus, 1.6 - 2.1% Potassium, and C-organic, so that cow urine can be used as a liquid organic fertilizer in order to become a more useful agricultural product. This study aims to find out the best bioactivator for the manufacture of Liquid Organic Fertilizer (POC) from cow urine. The manufacture of liquid organic fertilizer from cow urine can be done by fermentation method. The fermentation process was carried out for 14 days in a closed state with variations in the types of bioactivators used namely EM4, Promi, Orgadec, Stardec and Petrofast. Bioactivators were used to speed up the process of decomposing and remodeling organic matter from cow urine. From the results of the analysis conducted, the best bioactivator was stardec bioactivators with N content of 0.07%, P of 0.016%, K of 0.478%, C-organic of 1.27% and pH of 4.90.
PENGARUH JENIS DAN VARIASI KONSENTRASI FIKSASI TERHADAP KUALITAS WARNA BATIK PEWARNA ALAMI DAUN PETAI CINA Estytia Mayanti; Ahmad M Fuadi; Agus Haerudin
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 2, No 1 (2022): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (755.961 KB) | DOI: 10.46964/jimsi.v2i1.1471

Abstract

Penggunaan pewarna alami kini mulai banyak diminati untuk berbagai industri pembatikan. Hal ini mengingat penggunaan zat warna alami dipandang lebih murah karena bahan baku banyak diperoleh di Indonesia dan tidak memiliki efek samping yang membahayakan kesehatan manusia. Salah satu tanaman yang dapat digunakan sebagai bahan baku pewarna alami dan banyak ditemukan di Indonesia adalah daun petai cina (Laucaena leucocephala) yang mengandung zat aktif yang berupa alkaloid, saponin, flavonoida, dan tanin sebagai zat penimbul warna. Tujuan penelitian ini untuk mengetahui pengaruh jenis dan konsentrasi zat fiksasi terhadap hasil pewarnaan yang ditinjau dari ketahanan luntur warna terhadap pencucian sabun dan gosokan secara basah. Metode penelitian ini eksperimen dengan melakukan perlakuan pada variasi jenis zat fiksasi yakni tawas dan tunjung, serta variasi konsentrasi zat fiksasi pada 50 gram, 75 gram dan 100 gram. Hasil penelitian menunjukkan bahwa ekstrak daun petai cina dapat dimanfaatkan sebagai zat warna alami. Hasil uji ketahanan luntur dan penodaan warna menunjukkan bahwa penggunaan zat fiksasi tawas menghasilkan nilai ketahanan luntur yang lebih baik dibandingkan dengan zat fiksasi tunjung sedangkan pada konsentrasi zat fiksasi tidak berpengaruh terhadap ketahanan luntur warna karena konsentrasi zat fiksasi yang dibutuhkan sudah optimal. Hasil uji beda warna L*,a*,b* zat fiksasi tawas menghasilkan warna yang lebih terang dibandingkan dengan zat fiksasi tunjung dan identifikasi kode warna serta cahaya warna melalui encycolorpedia, arah warna yang dihasilkan dari ekstrak daun petai cina variasi fiksasi tawas dan tunjung semuanya menghasilkan arah warna orange.
PENGARUH VARIASI VOLUME ETANOL PADA PEMBUATAN TINTA SPIDOL WHITEBOARD MENGGUNAKAN PEWARNA EKSTRAK KULIT BUAH RAMBUTAN Ida Ayu Lestari; Fitriyana Fitriyana; Yuli Padmawati
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 1, No 1 (2021): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (907.883 KB) | DOI: 10.46964/jimsi.v1i1.645

Abstract

The rambutan peel will only be discarded after the fruit is eaten. Rambutan peel contains tannin compounds which are used as dyes in the paint and ink industries. The tannin compounds contained in the rambutan peel can also be used as a dye base material in the manufacture of ink markers. The purpose of this study is to determine the effect of ethanol volume variations on the characteristics of whiteboard markers with dye base material from rambutan peel extract to meet the Indonesia National Standard (SNI) for ink 06-1567-1999 which is safer for health. Making ink markers was carried out in several stages, namely, preparation of rambutan peel, extraction of rambutan peel, and mixing ink ingredients, among others, 3.5 g of arabic gum, 7 mL of aquades, 1 g of skin extract rambutan fruit, 10 drops of 10% FeCl3 solution, 0.2 g PEG 400, and 96% ethanol. Ethanol volume was varied as follows: 2 mL, 4 mL, 6 mL, 8 mL, and 10 mL. Based on the results of the analysis, the best results were obtained on the variation of 10 mL ethanol volume with a density of 0.9431 g/mL and a viscosity of 1.1169 cP which have met the SNI for ink 06-1567-1999. In addition, ink has dry time of 2.20 minutes, a smell like raw materials and purplish black colour.
KETAHANAN SOBEK KERTAS DARI PULP CAMPURAN SABUT KELAPA (Cocos nucifera) DAN PELEPAH PISANG KEPOK (Musa paradisiaca Linn) Sartika Nur Aisyah; Ramli Ramli; Marlinda Marlinda
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 1, No 2 (2021): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/jimsi.v1i2.867

Abstract

In general, the main material for making paper making is cellulose. Coconut coir waste contains 23,87% cellulose and kepok banana stem contains 64% cellulose, so that has the potential as an alternative raw material in the manufacture of paper pulp. Kepok banana peels contains 12,8% so it can be used as an adhesive (binder) to increase paper quality. The purpose of this study was to determine the best concentration of cooker solution NaOH in the mixture of coconut coir and banana smelter in producing the best pulp in accordance with SNI 0698:2010 and find out the effect of the concentration of cooking solution NaOH on the resistance of composite paper tear. A mixture of coconut coir and 120 g of banana smelter with a ratio of 40:80 cooked for 4 hours at a temperature of 100 ° C by varying the concentration of cooking solution NaOH 2%, 4%, 6%, 8% and 10%. Then the resulting pulp is printed into paper with the addition of a 35 g banana peel binder. The results in this study found that the best concentration of cooking solution NaOH at a concentration of 8% with cellulose levels of 81.80%, lignin levels of 13.34%, water content of 6.63%, ash content of 2.79% and paper tear resistance of 4393.54 mN.

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