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INDONESIA
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Industrial & Manufacturing Engineering
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI adalah jurnal yang diterbitkan oleh Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro untuk mempublikasikan karya ilmiah - karya ilmiah mahasiswa Program S1 Teknik Kimia Undip.
Arjuna Subject : -
Articles 178 Documents
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PROSES KULTIVASI Spirulina platensis MENGGUNAKAN POME (Palm Oil Mill Effluent) SEBAGAI MEDIA KULTUR DALAM RECEWAY OPEN POND BIOREACTOR Erlinda Khoirunisa; Elisa Mutiah; A Abdullah
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Spirulina platensis is being cultivated in POME as a medium using raceway open pond bioreactor during 5 days. Purpose of this research, which has POME concentration (3×, 4×, 5× diluted) and feed loading concentration of Spirulina platensis (0.443 g/L; 0.618 g/L; 0.952 g/L) as variables, are learning the effect of those variables to the Spirulina platensis growth and finding the best variable composition for Spirulina platensis growth. The response for this research is dry weight of Spirulina platensis.The result shows that POME which is five times diluted as a medium gives the highest dry weight of Spirulina platensis, it is 0.7592 g/L. For the feed loading concentration of Spirulina platensis, the best result shown at 0.443 g/L feed loading concentration which gives 0.9932 g/L dry weight of Spirulina platensis. It can be conclude that POME which is five times diluted and 0.443 g/L feed loading concentration of Spirulina platensis give the best result for Spirulina platensis growth. From this research, it is expected to have a  further research in a longer cultivation period of Spirulina platensis so that it can be a contribution for Spirulina platensis cultivation which can be commercially exploited for the supplements in human food, animal feed, beauty products and pharmaceuticals
PENURUNAN KADAR KAFEIN KOPI ARABIKA DENGAN PROSES FERMENTASI MENGGUNAKAN NOPKOR MZ-15 Danang Kristiyanto; Broto Dhegdo Haris Pranoto; Abdullah Abdullah
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 4, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Coffee is one of the most famous drinks in the world. Many people like to drinks coffee because it has a unique flavor. Besides its flavor, coffee also has the benefit of stimulating the brain's performance as well as antioxidants. Chlorogenic acid is the predominant antioxidants contained in coffee beans in the form of esters. Chlorogenic acid is also providing the typical aroma of coffee and a parameter to determine the quality of coffee. Besides having a beneficial substance, coffee also contain caffeine which is not good for health. One of the most famous type of coffee is civet coffee (kopi luwak). This coffee is unique because in the process of this coffee should be consumed first by the civet. The issue is populations of civet who began to decreaseand the process that makes it difficult to be produced on a large scale in a short time. In the present research we tried to apply the culture of a mixture of several types of microorganisms called NOPKOR MZ-15 for processing regular coffee that resembles the civet coffee. The coffee we use in tihis research is arabica coffee. This quality is still below the civet coffee because it contains caffeine higher. Economically,arabica coffee price is still far below the civet coffee. Through a fermentation method using NOPKOR MZ-15 caffeine contained in coffee is decomposed into ester to produce better flavor. After going through the process of fermentation, caffeine levels will drop so that the economic value of coffee also increased. This process also produces acidity that not too high so that the coffee is still safe to consumsed. This research can be obtained through alternatives to improve the quality of coffee without civet.
EKSTRAKSI FOSFOR DARI LIMBAH BUAH JENGKOL DAN PETAI UNTUK PEMBUATAN PUPUK ORGANIK CAIR Rentdo Reinnoki; Waskito Rohim; Slamet Priyanto
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Waste jengkol and petai is a class of organic waste that can pollute the environment. For that pollution problemscan be overcome by utilizing the waste into liquid organic fertilizer which can raise the economic value that arebeneficial to the environment. The process of making is solid liquid extraction (leaching) with leaching timevariation, species composition and bioactivator waste type. The mixture is fermented for 25 days once every 5 daysof leachate were taken to measure the content of phosphor. Variation time of leaching showed that the longer time,more and more content of phosphorus is produced. Optimum time on the day to 25 where each variable is theamount of phosphorus in every 663.33 mg / l; 596.69 mg / l; 427.48 mg / l and 398.98 mg / l. Bioactivator type andtype of waste that is used also affects the amount of phosphorus produced. Rendement produced on the 25th dayfrom each variable is 62.07%, 48.28%, 44.83% and 37.93%. The rank of variable composition that produces a highphosphorus content and high yield is jengkol EM4, petai EM4, jengkol Boisca boisca and petai Boisca.
PEMBUATAN DEKSTRIN DARI TEPUNG TAPIOKA SECARA ENZIMATIK DENGAN PEMANAS MICROWAVE Lis Pudiastuti; Tika Pratiwi; Herry Santosa
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 2, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Dextrin is partial hydrolysis product from starch with enzyme catalys. This research’s aim are to (1) make dextrin from tapioca starch, (2) learn the influence of starch concentration and liquefaction time to DE and viscosity. The process include 3 step (1) preparation, (2) formation of dextrin, and (3) result evaluated. The formation of dextrin consist of 2 phase, that is gelatinization phase which held in microwave and liquifaction phase which held in stirer tank. The control variable are starch genus (tapioca starch merck “Gunung Agung”), catalist genus (α-amylase)0,5-0,6 kg/tons dry starch, CaCl2.2H2O 40 ppm, pH 6 – 6,5, liquifaction temperature 94oC, Microwave with power 10 and defrost d2. Free variable that use are liquifaction period (30, 60, 90, 120,150,180 minutes) and starch soluion concentration (10, 15, 20, 25, 30, 35% w/v). At the end of researc, product analysed DE with volumetric method (Woodman, 1941),  viscosity with Leach method (1963) and Thermo Haake method. From this reaserch, the product dextrin was maltodextrin with maximal DE 12,839. And known that (1) as long as the liquifaction time,  higher DE from dextrin product and decrease in its viscocity, (2) small starch concentration produce dextrin with higher DE and smaller viscosity than high starch concentration.
STUDI AWAL PROSES PEMBUATAN GLYCEROL TRIBENZOAT DARI GLISEROL DAN ASAM BENZOAT DENGAN MENGGUNAKAN KATALIS ASAM KLORIDA A Abdurrakhman; Yanuar Rifianto; W Widayat
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 3, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Glycerol esterification process is one method that is widely in the conversion of glycerol. The product of conversion glycerol is environmentally friendly and renewable because it is not derived from petroleum. The products of the conversion of glycerol is commonly used in the food industry, cosmetics industry, polymer industry and can also be used as an additive for biodiesel which is also the compound before the glycerol formed. This study aims to examine the reaction of glycerol and benzoic acid using hidrochloric acid as catalyst. Experiments carried out by reacting glycerol and benzoic acid in stirred batch reactor with controlvariables are 100 rpm of stirrer speed, 500 ml volume (include glycerol, benzoate acid, and catalyst), and 60 minutes of reaction time. There are three random variables i.e. temperature of reaction 600C, 650C, 700C, mole ratio of acid to glycerol benzoate 3:1, 3.5:1, 4:1, and catalyst concentration (wt% glycerol) which is 5,32%, 7%, 8,68%. FTIR analysis results showed that the samples contained the results of IR spectra wavelength 1761 cm-1 in the fingerprint region and 3165 cm-1 frequency region group. The existence of these two adjustments that fixed in the area is strong evidence that the compound is Glycerol Tribenzoat.
ADSORBSI Fe DENGAN MENGGUNAKAN ZEOLIT ALAM SUATU USAHA UNTUK MENINGKATKAN MUTU MINYAK NILAM Bhagus Alfiyan; Hamdillah Usman; Herry Santosa
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Patchouli oil quality could be determined by the amount of Fe impurity contained in. The presence of Fe in patchouli oil is an accomplished fact, nevertheless its presence, for some cases, isn’t desirable. Adsorption is a method to reduce the amount of Fe in patchouli oil. The research would be done beyond by two steps.  First step is preparation of active zeolite which consists of (1) reducing zeolite size into 80 mesh and (2) activating the zeolite. In this step, zeolite  will be immersed  into 250 ml  KMnO4 1 M solution during 24 hours then it will be dried  using   110-1200C oven during 30 minutes.  Second step is Fe adsorption in patchouli oil. The aim of adsorption step is to determine the most influencing independent variable among the weight of zeolit, adsorption temperature, and adsorption time using 2 levels Factorial Design Method. The adsorption will be done on 5 gr and 10 gr weight of zeolit, 300C and 900C adsorption temperature, along with 30 minutes and 60 minutes adsorption time.  The analysis of the amount of Fe that can be reduced will be done using Atomic Absorption Spectrofotometry (AAS) at the end of each variable. From experiment result, we have determined that the weight of zeolite is the most influencing independent variable to reduce Fe in patchouli oil.
PENGERINGAN GABAH DENGAN MENGGUNAKAN PENGERING RESIRKULASI KONTINYU TIPE KONVEYOR PNEUMATIK Ivan Aditya Gunawan; Aulia Rahman Majid; Siswo Sumardiono
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 4, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Rice is one of the most important food commodities in the world. So we need to handle it seriously to reduce loss due to improper post-harvest handling. One of the post-harvest handling that noteworthy is the paddy grain drying process. Paddy grain drying process by conventional methods are often encounter many obstacles and no longer relevant to use. Therefore, required an innovative drying tool as an alternative to paddy grain drying.Recirculating paddy grain dryers with pneumatic conveyor could be an alternative, because it has several advantages that good quality dried grain and uniform, and easy to perform control during the drying process. The purpose of this study was to determine the effect of temperature and velocity of pneumatic air to the drying rate. The variables studied in this research isthe velocity of pneumatic airflow, and temperature of drying air. From the research we got that it will be running effectively at a temperature of 60 ° C and pneumatic air velocity of 20 m / s.
PENGARUH PENGERINGAN JAGUNG DENGAN METODE MIXED ADSORPTION DRYING MENGGUNAKAN ZEOLITE PADA UNGGUN TERFLUIDISASI TERHADAP KANDUNGAN LEMAK DAN PROTEIN JD Ryan Christy S; Muhammad Ulil Absori; Luqman Buchori
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Corn (Zea mays L.) is one of the important world food crops, other than wheat and rice. Becausecorn is an important role as a source of food and medicine, the post-harvest handling is veryimportant because it determines the quality of the corn for the next use. Drying process byadsorption is an option to replace conventional corn drying systems. In our study, the zeolite asadsorbent was mixed with corn in campfire the fluidized with air at 30-50oC. The air willevaporate water from the corn, and at the same time, the zeolite will absorb the water from the air,so the humidity will be maintained low. Thus heat consumption can be lowered and drying willbecome faster. Required materials in this study are corn and zeolite. Research conducted usingfixed variable sampling time (15 minutes). Incoming air temperature(room temp, 30oC, 40oC, 50oC)and ratio between corn and zeolitedrying the corn, characterization must do first. The dried corn tested the water, protein, fatcontains and the colors. The results from this research show the best variable is variable with ratiobetween corn and zeolite (1:0, 1:3, 1:1, 3:1) are used as changing variables. Beforeappropriate with SNI standard for dried food ( 14 % ) is variable using incoming air temperature40oC and 50oC with ratio between corn and zeolite 1 : 3 and using incoming air temperature 50oC. The suitable variable andappropriate with SNI standard for dried food ( 14 % ) is variable using incoming air temperature 40oC and 50oC with ratio between corn and zeolite 1 : 3.
PENGGUNAAN ZEOLITE SINTETIS DALAM PENGERINGAN GABAH DENGAN PROSES FLUIDISASI INDIRECT CONTACT Affian Widjanarko; R Ridwan; M. Djaeni; R Ratnawati
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 2, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Grain drying process being one of the constraints experienced by grain farmers in Indonesia. This is because the farmers still rely on the sun to dry their grain crops. Meanwhile, the drying is still constrained by the type of season. Drying by fluidization processes using zeolite considered an alternative to grain drying process. The purpose of this research, make use of zeolite to accelerate the drying of grain, determine the relation of drying air temperature with drying rate and determine the relation of air flow rate into the dryer with drying rate. The operating conditions in this experiment is the drying air temperature 30oC; 40°C; 50oC and 60oC), drying air flow rate (1 m/s; 1,5 m/s; 2 m/s and 2,5 m/s) and 1 kg of zeolite. The research was conducted by flowing dry air at a specific operating conditions and then contacted with the grain in the fluidized bed to obtain the water content of 12-14%. The results obtained indicate the temperature of 30oC, Nc = 0,0082, while the temperature of 60°C, Nc = 0,0138. In the air flow rate of 1 m/s, Nc = 0,0094 while the air flow rate of 2,5 m/s, Nc = 0,0118. From this data it can be concludedthatthe higher the temperature and the rate of the air dryer, the drying rate will be faster, so as to make the drying process faster.
EKSTRAKSI LIPID DARI MIKROALGA (NANOCHLOROPSIS sp.) DENGAN SOLVEN METHANOL DAN CHLOROFORM Bambang Wijanarko; Lanny Diane Putri
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Nanochloropsis sp. is the one of  kind microalgae which is already cultivated in Indonesia. Nanochloropsis sp. contain of lipid which has potensial to product some biodiesel. In order that this research is acted to get an alternative fuel source  which derivative from Nanochloropsis sp. The objective from this research are to explain effect of comparison mixture of solvent ; time of extraction; and also temperature to get the best result extract of lipid from Nannochloropsis sp. This research is acted with solid-liquid extraction methode which used mixture of solvent methanol and chloroform.The powder of Nannochloropsis sp. is extracted with various variable. The extract is then purified with destilation methode and analyzed used volumetric titration methode with NaOH 0,25N. The result indicate that  the best way to get  an optimum extract are mixed the solven, a comparison mixture of solvent methanol and chloroform which obtained optimum extract is 2:3 with time of extraction 3 hour and temperature 70°C.

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