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INDONESIA
PROSIDING SEMINAR KIMIA
Published by Universitas Mulawarman
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Chemistry
Arjuna Subject : -
Articles 45 Documents
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Search results for , issue "SEMINAR NASIONAL KIMIA 2017" : 45 Documents clear
PEMANFAATAN AMPAS TAHU SEBAGAI ARANG AKTIF DALAM MENURUNKAN KADAR COD, NITRIT DAN NITRAT PADA LIMBAH CAIR INDUSTRI TAHU Eka Riskhi M; Saibun Sitorus
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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Utilization of dregs as activated charcoal in lowering COD, Nitrite and Nitrate in tofu industry liquid waste. This research has been conducted to know the variation of time and pH value on decreasing COD, Nitrite and Nitrate from wastewater tofu by using dye technique from tofu waste as activated charcoal. The result of ANOVA analysis that Fcount is smaller than Ftable means there is positive influence at contact time 0-30 minutes while 30-60 min have negative effect to decrease COD, Nitrite and Nitrate level in tofu industry liquid waste. At pH value Fcount smaller than Ftabel means there is positive influence on pH value that is COD pH 7, Nitrite pH 5, Nitrate pH 7 while at alkaline pH (9 and 11) have negative effect to decreasing COD, Nitrite and Nitrate on industrial liquid waste tofu. Keywords: Active Charcoal, COD, Nitrite, Nitrate and Industrial Tofu Liquid Waste.
ANALISIS KADAR LOGAM Pb (TIMBAL) DAN KANDUNGAN PROTEIN PADA TERITIP (Balanus. sp) DI PESISIR PULAU BUNYU KALIMANTAN UTARA Annuary Laksono; Rudi Kartika; Noor Hindryawati
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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The researched about “The Correlation Level of Metal Lead (Pb) Towards The Protein Content of Teritip (balanus. sp)” this research was taken In The Coastal Water of Bunyu Island, North Borneo “This research aims to know the level of Metal (Pb) and protein content of Teritip (balanus. sp) based on the size and location of the different sampling. Afterwards, The Lead (Pb) metal and protein are correlated using Least Square method. Analysis of Metal (Pb) content by using AAS (Atomic absorption Spectrofotometry) and analysis of protein content using Kjeldahl method. From this research, it is found the Pb metal ion levels on point 1 is by an average of 0,574 mg/L, On point 2 is by an average of 0,816 mg/L, On points 3 is by an average of 0,648 mg/L and point 4 is by an average of 0,569mg/ L . It is also found the content protein of Teritip (balanus. sp) on point 1 is by an average of 22,9447 %. On point 2, it is found the average of protein content of 27,5737 %, point 3 by an average of 24,1332 % and point 4 by an average 20,9972 % . The correlation of Pb Metal level towards protein conten on Teritip (balanus. sp) symbolized as R2 = 0,810. Keywords: Pb Metal, Protein, Teritip (balanus. sp)
PEMANFAATAN KARBON AKTIF DARI ARANG TEMPURUNG KELAPA SEBAGAI KATALIS PADA SINTESIS n-BUTIL ESTER DARI MINYAK JELANTAH Rahmat Fajar Riyanto; Daniel Daniel; Saibun Sitorus
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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Penelitian tentang pemanfaatan karbon aktif dari arang tempurung kelapa sebagai katalis dalam sintesis n-butil ester telah dilakukan. Arang aktif tersulfonasi ini dibuat dengan mereaksikan karbon aktif dengan asam sulfat. Karbon aktif dibuat dari tempurung kelapa yang telah dipirolisis pada suhu 350°C kemudian disulfonasi dengan asam sulfat 10 N selama 6 jam. Hasilnya kemudian dicuci dan dikeringkan. Karbon aktif tersulfonasi dikarakterisasi dengan uji FT-IR dan SEM. Tujuan dari penelitian ini adalah mengetahui pemanfaatan karbon aktif dari arang tempurung kelapa sebagai katalis. Karbon aktif tersulfonasi ini dimanfaatkan sebagai katalis pada sintesis n-butil ester dari minyak jelantah. Untuk karbon aktif tersulfonasi keberadaan gugus sulfonat ditunjukkan pada bilangan gelombang 1103,28 cm-1 dan 763,81 cm-1 yang merupakan gugus –S=O dan S-O. Untuk hasil sintesa ditunjukkan pada 725,23 cm-1 yang menunjukkan gugus CH2 dan bilangan gelombang 1735,93 cm-1 yang menunjukkan gugus C=O yang didukung dengan C-O pada bilangan gelombang 1242,16 cm-1. Kata Kunci : Tempurung Kelapa, Arang Aktif Tersulfonasi, n-butil ester, Minyak Jelantah.
ISOLASI AMILASE DARI BIJI MANGGA (Mangifera indica L.) Eno Julia Shafarini; Winni Astuti; Rudi Kartika
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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Penelitian ini bertujuan untuk mengisolasi amilase dari biji mangga (Mangifera indica L.), mengetahui kadar protein, mengetahui kondisi optimum (derajat keasaman, suhu dan konsentrasi substrat), serta aktivitas spesifik amilasenya. Penentuan kadar protein total dilakukan dengan menggunakan metode Bradford. Penentuan kondisi optimum dan aktivitas spesifik amilasenya dilakukan dengan menggunakan metode asam dinitrosalisilat (DNS). Hasil penelitian ini menunjukkan kadar protein total yang terdapat dalam ekstrak kasar enzim biji mangga (Mangifera indica L.) adalah 3.176,9 μg/mL, aktivitas amilase sebesar 0,068 U/mL dan aktivitas spesifiknya sebesar 0,858 U/mg. Kata Kunci: Kecambah Biji Nangka (Artocarpus heterophyllus Lam), Ekstrak Kasar Enzim, Protein Total dan Amilase.
MEMBRAN SELULOSA ASETAT DARI MAHKOTA BUAH NANAS (Ananas Comocus) SEBAGAI FILTER DALAM TAHAPAN PENGOLAHAN AIR LIMBAH SARUNG TENUN SAMARINDA Manja’a Khasanah; Bohari Yusuf; Aman Sentosa Panggabean
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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Telah dilakukan penelitian tentang pemanfaatan Mahkota Buah Nanas (Ananas Comocus) sebagai membran selulosa asetat dalam menurunkan kadar COD, BOD, TDS, TSS, Turbiditas dan pH pada air limbah sarung tenun Samarinda. Membran selulosa asetat dibuat dengan memcampurkan seluosa asetat dengan Aseton sebagai pelarut, kemudian ditambahkan polietilen glikol (PEG) sebagai zat aditif. Hasil karakterisasi membran selulosa asetat dapat dilihat dari hasil analisis FT-IR yang menunjukkan adanya gugus ulang gugus fungsi (C=O) dan unit ulang –CH2-CH2O- yaitu pada panjang gelombang 1739,79 cm-1 dan 1427,32 cm-1. Hasil penelitian menunjukkan bahwa serat dari Mahkota Buah Nanas dapat dimanfaatkan menjadi membran selulosa asetat dengan komposisi optimum pada perbandingan selulosa asetat:aseton:PEG yaitu 23%:72%:5%. Hasil penelitian menunjukkan adanya penurunan kadar limbah dari sarung tenun Samarinda dengan parameter COD, BOD, TDS, TSS, Turbiditas dan pH berturut-turut sebesar 2336,44 mg/L; 1,0458 mg/L; 136,3 mg/L; 23 mg/L; 11,0 NTU; 5,49 dengan hasil persen penyisihan berturut-turut yaitu sebesar 30,56 %; 47,32 %; 54,11 %; 47,73 %; 83,31 %; 8,01 % dengan nilai awal COD, BOD, TDS, TSS, Turbiditas dan pH masing-masing sebesar 3364,49 mg/L; 1,9853 mg/L; 297 mg/L; 44 mg/L; 65,9 NTU; 5,05. Kata Kunci : Mahkota Buah Nanas, Membran Selulosa Asetat, Filter Air Limbah
SINTESIS ETILENDIAMIDA DARI METIL ESTER MINYAK BIJI BINTARO (Cerbera manghas L.) MELALUI REAKSI AMIDASI DENGAN KATALIS NaOCH3 Fath Ali Akbar; Daniel Daniel; Chairul Saleh
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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Synthesis of ethylendimide from methyl ester of bintaro seed (Cerbera manghas L) through amidation reaction using NaOCH3 as catalyst have been done. Result of the sythesis have showed oil amount of bintaro seed are 50,36 % with acid value are 2,9192 mg KOH/g and free fatty acid are 1,4671 %. Oil of bintaro seed are converted to methyl ester using H2SO4 as catalyst for 5 hours in temperature 60-70 ºC in benzene which ratio of methanol and oil are 6:1 gave acid value are 21,4967 mg KOH/g and saponification value are 53,2352 mg KOH/g. Methyl ester of bintaro seed are reacterd with ethylendiamine and with NaOCH3 as catalyst. The result of amidation are viscous liquid and yellowish white color with acid value are 102,8435 mg KOH/g and saponification value are 33,7064 mg KOH/gram with HLB value are 13,446 which is higher than theoritically HLB value are 12,94. Analysis of FTIR showed ethylenediamide have formed which have proven by vibration of wave number at 1643,35 cm­-1 for tetiary carbonyl amide group, 1056,99 cm-1 for ─C─N─ group and 3302,13 cm-1 for ─N─H─ group, but there are wave number appearance for ester carbonyl group at 1743,65 cm-1 which showed that methyl ester are not compeletely converted into ethylenediamide. Keywords: oil of bintaro seed, esterification, amidation, ethylenediamide
PEMBUATAN KATALIS BASA HETEROGEN DARI BATU GAMPING (LIMESTONE) GUNUNG PUGER Rakhmad Rakhmad; Noor Hindryawati; Daniel Daniel
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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Telah dilakukan penelitian tentang pembuatan katalis basa heterogen dari batu gamping (limestone). Serbuk batu gamping yang telah dipreparasi, dikalsinasi menggunakan furnace selama 6 jam pada suhu 900 °C. Penentuan kadar kalsium pada serbuk batu gamping menggunakan XRFdan karakterisasi menggunakan XRD dan SEM. Hasil karakterisasi XRD batu gamping sebelum kalsinasi menunjukkan puncak yang muncul pada 2θ = 29,4049°, 31.4176°, 39,4009°, 43.1447°, 47,4886°, 48,5122°, 57.4001°, 58.0733° dan 60.9857° menunjukkan bahwa mineral yang terkandung dalam sampel batu gamping berupa CaCO3 termasuk jenis calcite dengan system kristal rhombohedral. Mineral calcite batu gamping ini dapat dikalsinasi dengan nilai kristalinitas 99,6978 %dan setelah dikalsinasi pada suhu 900 °C selama 6 jam. Serbuk batu gamping yang telah dikalsinasi berjenis portlandite berupa Ca(OH)2 yang muncul pada puncak 18.0073°, 28.6709°, 34.1013°, 47.1200°, 50.8120°, 54.3565°, 62.6319° dan 64.2314°. Serbuk batu gamping yang telah dikalsinasi memiliki nilai kristalinitas sebesar 96,4945 %. Hasil karakterisasi SEM pada batu gamping sebelum dikalsinasi memiliki ukuran partikel bervariasi, terdapat ukuran bervariasi yang tidak merata yang menumpuk berwarna putih yang cenderung lebih kecil yang menyebabkan nilai kristalinitasnya tinggi sebagai mineral calcite. Citra uji SEM batu gamping setelah dikalsinasi pada suhu 900 °C selama 6 jam terjadi perubahan ukuran partikel yang membesar dan lebih seragam. Hal ini ditunjukkan oleh partikel berwarna putih. Uji kebasaan katalis dengan metode Hammett indicator pada indikator pp rentang kebasaan katalis pada rentang 8,6<H_<15 dan uji dengan metode benzoic acid titration menunjukkan nilai kebasaan katalis CaO dari batu gamping sebesar 1,7372 mmol/gr. Kata kunci: Batu gamping, katalis basa heterogen, CaCO3, calcite, portlandite
PENGARUH SUHU TERHADAP PENJERAPAN EKSTRAK ETANOL PDPM (PUCUK DAUN PUCUK MERAH) OLEH KERTAS SARING Sela Defi Alib Pradani; Sukemi Sukemi; Harra Ismi Farah; Ade Irfan
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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The use of natural extracts from plants mobilized onto solid media as acid-base and pH indicators is being attention of researchers. The mobilization of the ethanol extract of Syzigium oleana shoot leaves has been done and produces paper indicator that can be changed its colorin different pH. This study was designed to determine the effect of temperature on the adsorption of the ethanol extract of S. oleana shoot leavesonto filter paper. The ethanol extract of S. oleana shoot leaves was obtained by using maceration technique for 24 hours with material liquor ratio (MLR) of 1: 7. The adsorption ofethanol extract of S. oleana shoot leaves onto filter paper was carried out at different temperature, i.e. 27°C, 52°C and 81°C with MLR of 1: 100, filter paper weight of 0.2949 ± 0.0035 gram and solution volumeof 30 mL for 2 hours. The results showed that temperature effect on the adsorption of ethanol extract of S. oleana shoot leaves onto filter paper. The % adsorption of S. oleana shoot leaves onto filter paper increased with an increase in the temperature. Keywords : pucuk daun pucuk merah, Syzigium oleana, temperature, adsorption
SINTESIS ESTER GALAKTOSA ASAM LEMAK DARI METIL ESTER MINYAK BIJI KOPI ARABIKA (Coffea arabica) DAN GALAKTOSA ASETAT Josua K. Panannangan; Daniel Daniel; Chairul Saleh
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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The synthesis of ester galactose fatty acid from methyl ester of arabica coffee seed oil (Coffea arabica) and galactose acetate with a toxic solvent-free synthesis process has been performed. Methyl ester oil of coffee beans is synthesized from coffee seed oil that has been macerated for 3 days with oil content of 17% and the result of methyl ester synthesis of coffee seed oil has a yield percentage of 87.93% with methanol reaction medium with 1% H2SO4 catalyst. Galactose acetate was synthesized from galactose and anhydrous acetic acid on a 1: 1 ratio resulting in galactose acetate with a yield percentage of 91.29%. The synthesis of fatty acid galactose ester from methyl ester coffee seed oil and galactose acetate was synthesized with a 1: 1 mole ratio using a 1 M M NaHCO3 catalyst with a temperature of 80-100 ºC for 6 hours yielding galactosil ester of fatty acid coffee seed oil. FTIR analysis showed that ester group formed from coffee seed oil methyl ester at wave number 1745,58 cm-1. FTIR analysis of galactosil acetate showed the presence of ester group formed from galactose at wave number 1728,22 cm-1. FTIR analysis of galactose oil seed oil ester showed the presence of ester group at wave number 1743,65 cm-1 and group (CH2)n at wave number 721,38 cm-1 with value of HLB obtained 3,494. Keywords: Coffee bean oil, galactose acetate, interesterification, fatty acid ester galactose
SENYAWA METABOLIT SEKUNDER EKSTRAK METANOL DAUN MANGROVE SONNERATIA ALBA DAN SIFAT TOKSISITASNYA Indri Rizki Eriani; Usman Usman
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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Sonneratia alba is one of the most important and widespread mangrove species. Although Indonesia has various types of mangroves but the utilization of mangroves as medicinal products, food and health has not been done because of the limited information about bioactive compounds in mangroves. The aim of this research is to know phytochemical group contained in mangrove leaf extract of Sonneratia alba and toxicity content of mango leaf extract of Sonneratia alba to Artemia salina larvae. Phytochemical tests performed are alkaloids, flavonoids, steroids / triterpenoids, saponins, phenolic and tannins. The method used in the toxicity test against Artemia salina is the BSLT method of this method carried out in the preliminary test for screening or screening pharmacological activity on natural products. The results showed that mango leaf extract of Sonneratia alba contain phenol, steroid / triterpenoid, saponin and tannin. Based on the results of toxicity test of mango leaf extract of Sonneratia alba has weak toxicity because obtained LC50 result more than 100 μg / mL that is 441.67 ppm. So that can be done further testing anti-cancer activity and drug development. Keywords: Sonneratia alba, phytochemicals, toxicity, Artemia salina

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