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INDONESIA
Seminar Nasional Teknik Kimia Kejuangan
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science
Prosiding Seminar Nasional Teknik Kimia Kejuangan adalah media online dari makalah yang telah diseminarkan pada acara Seminar Nasional Teknik Kimia “Kejuangan” (SNTKK). SNTKK merupakan agenda tahunan yang diselenggarakan oleh Program Studi Teknik Kimia FTI UPN ”Veteran” Yogyakarta. Seminar ini merupakan sarana komunikasi bagi para peneliti dari perguruan tinggi, institusi pendidikan, serta lembaga penelitian maupun industri, dalam mengembangkan teknologi kimia untuk pengolahan sumber daya alam Indonesia.
Arjuna Subject : -
Articles 588 Documents
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Pengaruh Waktu Pengendapan dan Dosis Biokoagulan dari Biji Kelor dan Biji Kecipir terhadap Limbah Laundry Erlinda Ningsih; Abas Sato; Nur Azizah; Puguh Rumanto
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2018: PROSIDING SNTKK 2018
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Optimasi Proses Ozonasi Untuk Penurunan Kadar Krom (Cr) dalam Limbah Cair Elektroplating dengan Metode Respon Permukaan Aji Prasetyaningrum; M. Djaeni; Bakti Jos; Yudhy Dharmawan
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Industrial wastewater from electroplating process containing the heavy metals, such as Chromium (Cr). The initial content of Cr in electroplating waste water was approximately 78.24 ppm. The Cr content may be discharged into waters and safe for the environment is 2 ppm.Industrial electroplating waste water usually treated with a combination of chemical and physical processes such as coagulation and flocculation. However, conventional processing system requires a long of processing time and a large area. This study aims to provide an alternative treatment of electroplating wastewater through the application of ozonation technology. Response Surface Methodology was used to obtain optimum conditions in decreased levels of Cr content. Variable for ozonation process included of ozonation time (X1), pH (X2) and ozone gas flow rate (X3). The results showed that the effectiveness of ozonation treatment increase at lower pH. The high value of correlation (R2 = 0.93767) indicated that a high correlation values between the experimental and prediction data. The optimum conditions for Cr degradation at 30 minutes of ozonation treatment, pH 2 and ozone gas flow rate of 3 L min-1, with the lowest contentration of Cr was 1.92 ppm.
Sintesis Carboxymethyl Konjac-Glucomannan (CM-KGM) dari Tepung Porang: Pengaruh Media dan Suhu Karboksimetilasi terhadap Nilai Derajat Substitusi Sperisa Distantina; Amellia Setyani Putrie; Inas Novianti
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

To increase the solubility of porang flour or konjac flour, the konjac flour was modified chemically into carboxymethylation konjac-glucomannan (CM-KGM). CM-KGM was prepared by alkalization of konjac flour using sodium hydroxide for 30 minutes at 30oC. After then, product alkalization was carboxymeted using sodium monochloroacetic (Na-MCA) with ratio 1:1 gram flour/NA-MCA. The aims of this research were to study the effect of concentration ethanol as the solvent media (50% ethanol and 90% ethanol) and temperature (45-50oC dan 65-70oC) to the rate of degrees of substitution (DS) formation in carboxymethylation step. Based on the data, the highest DS was attained by carboxymethylation using media solvent 90% ethanol, time of carboxymethylation 150 minute and temperature carboxymethylation 45-50C. The relationship between temperature and reaction constant (k) follows      k = 0,3082 exp (-15.227,8064/8,314T )
Synthesis of Salacca Peel Based Activated Carbons Using Microwave Induced ZnCl2 Activation Arenst Andreas; Jessica Atin; Christiandi Arifin; Hans Kristianto
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

In this research, snake fruit (salacca) peel based activated carbons were prepared by ZnCl2 activation using microwave heating method. By using microwave heating, it is expected that the energy consumption in the activation process will be more efficient than that obtained by conventional heating. The effects of mass ratio of snake fruit peel to ZnCl2 (1:2 and 1:4), microwave power (130 watt, 230 watt, 380 watt, 540 watt, and 700 watt), and microwave radiation time (5, 15, 20, and 25 minutes) on the characteristics of activated carbons were investigated in detail. Activated carbons with BET surface area of 1796 m2/g were obtained at mass ratio of snake fruit peel to ZnCl2 of 1:4, microwave power of 540 watt, and 25 minutes of radiation time. Activated carbons were then used for adsorption of Cu(II) metal ions with initial concentration variations of 100, 150, 200, 250, and 300 ppm. Isotherm models used were Langmuir and Freundlich. From adsorption process, it was found that Langmuir model fitted experiment data well, with maximum adsorption capacity of 1262.62 mg Cu2+/g activated carbons. Kinetic model that were studied were pseudo first order, pseudo second order, and intraparticle diffusion mechanism. It was found that kinetic data followed well the pseudo second order model.
Extraction of Phytochemical Compounds from Pressed-Palm Fiber Using Water and Pressurize Carbon Dioxide Putu Adhitya Dita Putra; Bella Putri Novitasari; Sugeng Winardi; Tantular Nurtono; Kusdianto Kusdianto; Siti Machmudah
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Sub-critical extraction of palm oil from pressed palm fiber using water and preassured carbon dioxide solventwas conducted via the dynamic mode to investigate the ability of water and CO2 to extract α-tocopherol, β-carotene, and phenolic compounds. The yield of palm oil and the solubility of α-tocopherol, β-carotene, andphenolic compounds were investigated at 120; 140; 160; and 180oC and pressure range from 30–100 bar. Theextracted oil was analysed α-tocopherol, β-carotene, and phenolic compounds content using UV–Visspectrophotometry. The results The temperature increase on the process of extracting hydrothermal on thetemperature (120-180oC) increase yield α-tocopherol .The steady to extract α-tocopherol , an acid palmitateand β-carotene on the temperature 180oc with pressure 10 MPa .From the experiment done get the best resulton the temperature 180oC to pressure 10 MPa with yield α-tocopherol 271,28 mg/g sample (% recovery is73,06%), yield pamitate acid 2,066 mg/g sample (% recovery is 0,55% ), and yield β-carotene 0,008 mg/gsample (% recovery is 0,0021 %) as compared to that achieved through conventional palm oil processingindicates that extraction of α-tocopherol, β-carotene, and phenolic compounds using this methode is viable.
Central Composite Statistical Design of Tapioca Starch Hydrolysis using Immobilized Glucoamylase on Mesostructured Cellular Foam Silica (MCF-9.2T-3D) Joni Agustian; Lilis Hermida; Ade Febriana Syahfitri
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2018: PROSIDING SNTKK 2018
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Pengaruh Aditif Sodium Lauryl Sulfate dan Carboxy Methyl Cellulose pada Pembuatan Coal Water Mixture I Gusti S. Budiaman; S. Diyar Kholisoh; Placidia Osita O.; Priscilla Hilary K.
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Nowadays Indonesia’s energy needs are increasingly high and estimated at about 2 million barrels of oilequivalent (2 MMBOE). Indonesia's oil reserves are already dwindling, while coal has not well-utilized yet.Recent utilization of coal in the solid phase causes incomplete combustion. An alternative way to completethe combustion is by converting coal into CWM (coal water mixture). CWM is expected to have similarproperties to fuel oil so that it will be more easily atomized and burned. A relatively high calorific value coalfrom Murung Raya (Central Kalimantan) was applied. CWM was experimentally prepared by crushing coalinto very fine granules, it was therefore mixed into the water added by sodium lauryl sulfate (SLS) andcarboxy methyl cellulose (CMC) as dispersant and stabilizer, respectively. Two experimental paramaterschosen in this study included parameter-1 (0,7% SLS and 0,1% CMC) and parameter-2 (0,8% SLS and 0,2%CMC), based on the total mass. Each parameter was mixed into the flask (mixing vessel) containing water.Therefore coal was gradually added with the coal-water ratio of 50%, 55%, 60%, 65%, and 70%. The mixingwas conducted for 120 minutes at temperature of about 50 °C and stirring speed of 500 rpm. The best resultof CWM was performed on parameter-2 with 55% of coal. It had a calorific value of 3845 cal/g and wasstable during its storage within 20 hours.
Pemisahan Campuran THF-Etanol Menggunakan Extractive Dividing Wall Column (E-DWC) Juan Christoper; Nanette Litya; Herry Santoso; Yansen Hartanto
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2018: PROSIDING SNTKK 2018
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Analisis Kadar Zat Menguap dan Kadar Karbon Terikat Pada Briket Eceng Gondok – Sekam Padi Tauny Akbari
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Water hyacinths are aquatic weeds that have negative impacts of social, economical, and environmental. Water hyacinth has not been widely used as a renewable energy. Aim of this research is to analyze volatile matter content and fixed carbon content at renewable energy sources in the form of water hyacinth – rice husk briquette. The research design is experiment using Factorial Complete Randomized Design (3x3) with two factors; the charcoal combinations of rice husk : water hyacinth and the percentage of tapioca binder. This experiment is repeated 3 times, so there are 27 treatments. The calculation of volatile matter content using ASTMD-3175 standard and the calculation of fixed carbon content using ASTMD-3172 standard. The results show that the lowest volatile matter content (50.5%) and the highest fixed carbon content (20.3%) are owned by briquette A1P3 (combination of rice husk : water hyacinth 1:1 and the percentage of tapioca binder 5%). That briquette is not appropriate with the standards of charcoal briquette (SNI 01-6235-2000)
Pectin Extraction of Citrus aurantifolia’s Peel Using Microwave Assisted Extraction Megawati Megawati; Ruth Samaria Pardede; Desy Putri Nawangsari
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

This research investigated pectin extraction of lime (Citrus aurantifolia) peel with oxalic acid solvent using Microwave Assisted Extraction (MAE) method. Prior of usage, lime peel was dried and ground to reduce water content and increase contact surface. Extraction using conventional method was also performed to study comparison with extraction using MAE. Extraction using MAE was performed to 10 g material and 300 mL oxalic acid 0.2 N. Pectin solution was then dehydrated using 96% ethanol (1:1 v/v) to get pure pectin. Experiment showed that MAE method obtained pectin with shorter duration (6 minutes with rendement 10.9%) compared to conventional method (20 minutes with rendement 11.8%). Pectin extraction using MAE for 6 minutes at 450 Watt produced 10.9 g pectin, higher than 350 W which produced 10.2 g. At 450 Watt with duration of 2, 3, 4, 5 and 6 minutes, pectin obtained are 0.75; 0.87; 0.93; 1.01 and 1.09 g respectively. The result of FTIR (Fourier Transform Infrared Spectroscopy) and other properties analysis showed that pectin consists of ester, cyclic-carbon, carboxylic and carbonile; and also 8.15% metoxil, 74.57% galacturonic acid, 2.7% water, 0.236% ash, esterification degree of 79.2%, and equivalent weight of 612.

Page 20 of 59 | Total Record : 588

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