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INDONESIA
PROSIDING SEMINAR KIMIA
Published by Universitas Mulawarman
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Chemistry
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Articles 18 Documents
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Search results for , issue "2020: Prosiding Seminar Nasional Kimia Berwawasan Lingkungan (SNK-BL) 2020" : 18 Documents clear
PEMBUATAN BIOETANOL DARI BUAH SUKUN (Artocarpus altilis) SECARA FERMENTASI DENGAN MENGGUNAKAN Saccharomyces cerevisae DAN PENAMBAHAN AMPAS TAHU SEBAGAI SUMBER NUTRISI BAGI MIKROBA Fajariah Fajariah
PROSIDING SEMINAR KIMIA 2020: Prosiding Seminar Nasional Kimia Berwawasan Lingkungan (SNK-BL) 2020
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Research on the manufacture of bioethanol from breadfruit (Artocarpus altilis ) starch by fermentation using Saccharomyces cerevisae and adding tofu pulp as a nutrient for microbes. This research was conducted to determine the nutrient concentrasiton and fermentation time to produce the optimum ethanol concentration. The hydrolysis process is carried out enzymatically through the liquefaction phase using É‘-amylase saccharification and gluko-amylase phases. The fermentation procces is carried out by a nurient source. The variation of tofu dregs used was 0,75%,1,5% and 2,25% (b / v ) and the variation of fermentation time was (6,8 and 10) days. The destillations process obtained the most distillate results on the 6th day with the addition of tofu dregs as much as 0,75% namely 18,4 ml. Keywords : Bioethanol, tofu pulp, breadfruit (Artocarpus altilis) hydrolisis
APLIKASI ENZIM SELULASE TIPE ASAM PADA PROSES BIOWASHING KAIN DENIM DAN ANALISIS AIR LIMBAH YANG DIHASILKAN Kurniawan Kurniawan
PROSIDING SEMINAR KIMIA 2020: Prosiding Seminar Nasional Kimia Berwawasan Lingkungan (SNK-BL) 2020
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Teknologi enzimatis berkembang sangat pesat, pada industri tekstil enzim dapat diaplikasikan pada proses pre treatment sampai dengan proses finishing. Salah satu proses enzimatis adalah penyempurnaan bio washing pada kain denim. Pada penelitian ini dilakukan proses bio washing menggunakan enzim selulase tipe asam dengan memvariasikan konsentrasi enzim dari 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 dan 3.5%. Karakterisasi yang dilakukan pada kain hasil bio washing adalah uji pengurangan berat kain, uji kekuatan tarik dan mulur kain, serta uji kekakuan kain. Karakterisasi air limbah meliputi COD, BOD, TSS. Hasil percobaan menunjukkan konsentrasi optimum adalah pada penggunaan enzim selulase konsentrasi 2.5%. Kondisi optimum tersebut menghasilkan kain yang memenuhi standar mutu kain denim menurut SNI 08-0560-2008 tentang kain denim. Kekuatan tarik arah lusi dan pakan adalah 47,0 kg dan 25,6 kg dan COD setelah pengolahan limbah adalah 296,98 mg/l, BOD 148,58 mg/l, padatan tersuspensi 80 mg/l, padatan terlarut adalah 280 mg/l. Kata kunci : biowashing, denim, enzim selulase
PRODUKSI BIOETHANOL DARI BIJI BUAH NANGKA (Artocarpus heterophyllus Lam.) SECARA HIDROLISIS ENZIMATIS DENGAN PENAMBAHAN AMPAS TAHU SEBAGAI NUTRISI PADA FERMENTASI MENGUNAKAN MIKROBA Saccaromyces cerevisiae Ana Fitriani
PROSIDING SEMINAR KIMIA 2020: Prosiding Seminar Nasional Kimia Berwawasan Lingkungan (SNK-BL) 2020
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Jackfruit seeds are one of the foods that have not been used so far. Jackfruit seeds contain carbohydrates which can be used as bioethanol. Research on the manufacture of ethanol from jackfruit seed flour (Artocarpus heterophyllus Lam.) Using Saccharomyces cerevisiae with the addition of tofu pulp as a source of nutrition for microorganisms at the time of fermentation. This research was conducted to determine nutrient concentration and fermentation time to produce optimal ethanol concentration. The hydrolysis process is carried out enzymatically using α-amylase at the liquefaction stage at pH (6 - 6.5) and gluco-amylase at the saccharification stage at pH (4- 5). Then carried out the fermentation process with a variation of time (6; 8 and 10) days using yeast Saccharomyces cerevisiae with a nutrient concentration of tofu pulp (0.75; 1.5 and 2.25)% (w / v). Then the distillation process on the results of the fermentation was carried out to produce the most ethanol distillate on day 8 of 14.5 mL. Keywords: Bioethanol, Jackfruit Seed (Artocarpus heterophyllus Lam.), Tofu Dregs, Fermentation
PEMBUATAN ARANG AKTIF DARI AMPAS TEBU DAN APLIKASINYA SEBAGAI ADSORBEN ZAT WARNA MERAH DARI LIMBAH PENCELUPAN BENANG TENUN SARUNG SAMARINDA Ririn Ariyani
PROSIDING SEMINAR KIMIA 2020: Prosiding Seminar Nasional Kimia Berwawasan Lingkungan (SNK-BL) 2020
Publisher : PROSIDING SEMINAR KIMIA

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The research about preparation of activated charcoal from bagasse and its application as an adsorbent for red dye from the waste weaving of the sarong in Samarinda has been conducted. Determination of the surface area of ​​charcoal before and after activation using the methylene blue method was 176.1918 m2/g and 180.2635 m2/g, respectively, characterization by FT-IR on activated charcoal before and after activat ion showed that there are C - H. aromatic, C = O, C = O and C - O, based on the XRD characterization results showed that after activation activated carbon there is an amorph peak with a heterogeneous surface which indicated that the characteristic carbon appeared in the area between 22.26-24.31o. Analysis of the quality of charcoal after activation obtained a moisture content of 5%; ash content 4.20% and volatile mater 29.44%. The use of activated charcoal for adsorption on the rhodamine B dye and the red dye from waste dyeing yarn weaving sarong Samarinda used a UV-Vis spectrophotometer with several variations of optimization, namely: optimum contact time variation, optimum adsorbent weight variation, optimum concentration variation and comparison of the optimum optimization results at time variations contact and adsorbent weight of rhodamine B dye and red dye from from waste dyeing yarn weaving sarong Samarinda, the results of the optimization comparison of optimum contact time obtained the highest degradation% in red dye from from waste dyeing yarn weaving sarong Samarinda, namely 66.410%, optimum at 45 minutes and the optimization of adsorbent weight variations obtained the highest The optimum red dye from from waste dyeing yarn weaving sarong Samarinda is 93.387% at a weight of 0,2 g. Keywords: Sugarcane Bagasse, Activated Charcoal, Adsorbent, from waste dyeing yarn weaving sarong Samarinda.
TREN PENELITIAN PENDIDIKAN PROSES PEMBELAJARAN DARING SELAMA PANDEMI COVID 19 Nurfajriani Nurfajriani
PROSIDING SEMINAR KIMIA 2020: Prosiding Seminar Nasional Kimia Berwawasan Lingkungan (SNK-BL) 2020
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Abstract

Pembelajaran daring di rumah merupakan salah satu upaya pencegahan penyebaran virus corona. Banyak para peneliti telah melakukan penelitian mengenai pembelajaran daring di rumah. Penelitian ini tertarik untuk melakukan analisis tren penelitian pendidikan proses pembelajaran daring selama pandemi covid 19 yang telah dipublikasi dalam jurnal yang terdaftar dalam SINTA dengan tujuan untuk memberikan gambaran dan kecenderungan tren penelitian pendidikan selama pandemi covid-19 dengan menggunakan metode analisis konten. Hasil penelitian didapatkan bahwa jumlah artikel yang terpublikasi dalam jurnal terdaftar SINTA masih sangat sedikit berujumlah 39 artikel. Banyak para peneliti menggunakan jenis penelitian kualitatif dalam melakukan penelitian dengan berbagai macam desain penelitian yang digunaka seperti desain deskriptif kualitatif, studi kasus, naratif dan studi fenomonologi. Sedangkan peneliti yang menggunakan jenis penelitian kuantitatif memilih desain penelitian berupa desain penelitian deskriptif survey, pra eksperimen, dan quasi eksprimen. Dan ada juga peneliti menggunakan penelitian campuran serta R&D. Teknik pengumpulan data yang paling banyak digunakan peneliti berupa wawancara, angket dan dokumentasi dengan subjek penelitian yang beragam dari tingkat dasar sampai perguruan tinggi. Pemilihan jenis penelitian, desain penelitian, subjek penelitian teknik pengumpulan data serta analisis data didasarkan pada permasalahan yang ingin diteliti serta kemungkinannya terlaksana penelitian yang dilakukan ditinjau dari kondisi saat ini yaitu pandemi covid-19. Kata Kunci : Tren, Pembelajaran daring, pandemi Covid-19
POTENSI KOMBINASI EKSTRAK DAUN STEVIA (Stevia Rebaudiana Bertoni) DAN DAUN YAKON (Smallanthus Sonchifolius (Poepp.) H.Rob.) SEBAGAI INHIBITOR ENZIM α-GLUKOSIDASE Lilik Sulastri
PROSIDING SEMINAR KIMIA 2020: Prosiding Seminar Nasional Kimia Berwawasan Lingkungan (SNK-BL) 2020
Publisher : PROSIDING SEMINAR KIMIA

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Diabetes melitus adalah salah satu penyakit metabolik yang ditandai dengan meningkatnya kadar glukosa dalam darah yang tinggi atau di atas nilai normal. Salah satu pengobatan yang dapat digunakan pada diabetes melitus adalah dengan menghambat aktivitas enzim α-glukosidase. Secara empiris tumbuhan obat Indonesia yang telah digunakan untuk menurunkan kadar glukosa darah adalah daun stevia (Stevia rebaudiana Bertoni) dan daun yakon (Smallanthus sonchifolius (Poepp.) H.Rob.). Tujuan penelitian ini adalah untuk mengetahui aktivitas penghambatan enzim a-glukosidase ekstrak etanol 96% daun stevia dan daun yakon serta kombinasinya. Daun stevia dan yakon secara terpisah dimaserasi secara bertingkat menggunakan pelarut n-heksana, etil asetat, etanol 96% dan air. Ekstrak yang diperoleh (n-heksan, etilasetat, etanol dan air) diuji aktivitas penghambatan enzim a-glukosidase. Ekstrak terbaik dari kedua tanaman dikombinasikan sampai diperoleh nilai IC50. Hasil penelitian menunjukkan bahwa aktivitas penghambatan enzim a-glukosidase terbaik terdapat pada kedua ekstrak etanol 96% yaitu sebesar 69% dan 64,5% dengan IC50 berturut-turut 68,07 ppm dan 18,84 ppm. Kombinasi ekstrak terbaik diperoleh pada perbandingan ekstrak EtOH 96% stevia dan yakon adalah 1:1 dengan nilai IC50 sebesar 14,48 ppm, dengan akarbose sebagai kontrol (+) sebesar 17,72 ppm. Hasil tersebut menunjukkan bahwa ada hubungan yang sinergis antara senyawa kimia yang terkandung dalam stevia dan yakon. Kata kunci: Diabetes; Enzim a-glukosidase, Stevia rebaudiana Bertoni, Smallanthus sonchifolius (Poepp.) H.Rob.
VALIDASI METODE PENENTUAN KADMIUM (Cd) PADA PUPUK ORGANIK PADAT MENGGUNAKAN SPEKTROFOTOMETER SERAPAN ATOM (SSA) DI PT. GLOBAL ENVIRONMENT LABORATORY Astari Simbolon Monica Magdalena
PROSIDING SEMINAR KIMIA 2020: Prosiding Seminar Nasional Kimia Berwawasan Lingkungan (SNK-BL) 2020
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Validation of the method of determining cadmium (Cd) in manure using Atomic Absorption Spectrophotometer (AAS) at PT Global Environment Laboratory has been carried out. The determination of cadmium metal (Cd) in manure refers to the Indonesian National Standard (SNI) 2803: 2012. Based on the results of testing for cadmium (Cd) in manure, the correlation coefficient (r) was 0.9997 and the cadmium (Cd) content obtained was 1.954 mg / kg with a relative standard deviation (RSD)% value of 0.028% less than 2 / 3 CV Horwitz amounted to 2.41. 0Accuracy value ranges from 105.05% to 116.86%. The detection limit value (LOD) was 0.38 mg / kg and the quantization limit value (LOQ) was 0.43 mg / kg. The instrument limit value (IDL) is 0.022 ppm and the method limit value (MDL) is 0.0194 ppm, these results meet the MDL acceptability requirements. Based on the research results, the determination of cadmium (Cd) in manure with the SNI method for solid NPK fertilizers using Atomic Absorption Spectrophotometer (AAS) can be used with valid results. Keywords : Manure, Validation method, Atomic Absorption Spechtrophotometer (AAS), Cadmium (Cd)
PEMANFAATAN DIMENSI SETTLING POND UNTUK PENURUNAN PENCEMARAN KIMIA-FISIK AIR LIMBAH PERTAMBANGAN BATUBARA Saibun Sitorus
PROSIDING SEMINAR KIMIA 2020: Prosiding Seminar Nasional Kimia Berwawasan Lingkungan (SNK-BL) 2020
Publisher : PROSIDING SEMINAR KIMIA

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The use of settling pond dimensions in coal mining has been widely used to reduce chemical-physical pollution of wastewater. This study aims to take advantage of the dimensions of the settling pond in wastewater pollutants based on quality and to see the comparison of the actual load of wastewater with the maximum pollutant load in the settling pond location. The method in this research is descriptive qualitative. The sampling location consisted of 3 stations, namely the settling pond location 1, location 2 and location 3. The results showed that the decrease in the settling pond in treating mining wastewater based on chemical-physical parameters can reduce the pollutant load by 2% (0.0031 kg/second) for the settling pond location 1.21% (0.4281kg/second) for location 2 and 1% (0.0074 kg/second) for location 3.The actual pollutant load of wastewater, physical and chemical parameters are smaller than the pollutant load maximum (CPA<BPM). Actual pollutant load (BPA) of settling pond location 1 is 0.107 kg/second, location 2 is 0.032 kg/second and location 3 is 0.105 kg/second. Meanwhile, the maximum pollutant load (BPM) of settling pond for location 1 is 0.165 kg/second, location 2 is 2.01 kg/second and location 3 is 0.628 kg/second. Decreasing pollutant load in settling ponds. Several factors include vegetation, distance between the source of pollutants (catchment area) and the settling pond, dimensions of the settling pond (retention pond), the process of coagulant application, topography, type of lithology. Keywords : Settling pond, pollution reduction, pollutant load, chemical-physical

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