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PEMURNIAN VIRGIN COCONUT OIL MENGGUNAKAN ZEOLIT 3A SEBAGAI BAHAN BAKU OBAT KULIT Suharmadi, Sri Handayani; Enjarlis, Enjarlis
Jurnal Bahan Alam Terbarukan Vol 5, No 2 (2016): December 2016 [Nationally Accredited]
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v5i2.6467

Virgin coconut oil (VCO) is the feedstock for the production of cocozone oil, a substance that can be used as a medicine for several skin problems. This work is aimed to find the best method for producing VCO with low water content which is the prerequisite to be a suitable feedstock of cocozone oil. Two methods of VCO production i.e. agitation in room temperature (30oC) and cooling at 5oC for 24 hours were compared. The amount of zeolite 3A added to 20 ml of VCO was varied on 10, 20, and 30 gram. It is found that the agitation method with 30 gram zeolite 3A can lower the water content down to 30%.

PEMURNIAN VIRGIN COCONUT OIL MENGGUNAKAN ZEOLIT 3A SEBAGAI BAHAN BAKU OBAT KULIT Suharmadi, Sri Handayani; Enjarlis, Enjarlis
Jurnal Bahan Alam Terbarukan Vol 5, No 2 (2016): December 2016 [Nationally Accredited]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v5i2.6467

Virgin coconut oil (VCO) is the feedstock for the production of cocozone oil, a substance that can be used as a medicine for several skin problems. This work is aimed to find the best method for producing VCO with low water content which is the prerequisite to be a suitable feedstock of cocozone oil. Two methods of VCO production i.e. agitation in room temperature (30oC) and cooling at 5oC for 24 hours were compared. The amount of zeolite 3A added to 20 ml of VCO was varied on 10, 20, and 30 gram. It is found that the agitation method with 30 gram zeolite 3A can lower the water content down to 30%.

STUDI PENDAHULUAN OZONASI (KATALITIK DAN NON KATALITIK) LIMBAH CAIR KARBOFURAN Enjarlis Enjarlis; S. Bismo; Slamet Slamet; Roekmijati Roekmijati
Reaktor Volume 10, Nomor 2, Desember 2006
Publisher : Dept. of Chemical Engineering, Diponegoro University

Karbofuran adalah insektisida yang banyak digunakan oleh petani padi di Indonesia. Di perairan karbofuran berpotensi membentuk organoklorida dengan klor atau turunan klor. Oleh sebab itu, karbofuran digunakan sebagai objek penelitian untuk disisihkan dalam air dengan proses ozonasi. Proses ozonasi mampu menguraikan organik kompleks menjadi sederhana dan meningkatkan sifat biodegradable. Tujuan penelitian yaitu membandingkan penyisihan karbofuran dalam air dengan proses ozonasi non-katalitik dan katalitik menggunakan katalis karbon aktif. Ragam percobaan yaitu pH (2, 7, dan 9) pada suhu kamar selama 60 menit. Analisis konsentrasi karbofuran menggunakan kromatografi gas dan konsentrasi zat organik sebagai Chemical Oxigen Deman (COD) secara titrasi pada satiap10 menit selama 60 menit. Hasil percobaan memperlihatkan proses ozonasi katalitik dan non-katalitik terbaik pada kondisi basa (pH 9) dengan penyisihan karbofuran 100 % dan COD turun dari 134 ppm menjadi 38 ppm untuk ozonasi katalitik, sedangkan pada ozonasi non-katalitik penyisihan karbofuran 46,4 % dan COD turun menjadi 70 ppm. Perubahan suhu dan pH selama proses baik ozonasi katalitik maupun non-katalitik tidak menunjukkan perubahan yang berarti.

PENGOLAHAN LINDI TPA DENGAN METODE KOAGULASI DAN OZONASI Latin Hanum Lalasari; Enjarlis Enjarlis
Widyariset Vol 12, No 1 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

Landfilling of municipal waste is a major problem of the waste management system in Indonesia. The generated leachate must be appropriately treated before being discharged into the environment because it ivas toxic. The aim of this research was to compare the coagulation, ozonation, coagulation-ozonation, and ozonation- coagulation processes of landfill leachate at TPA Bantar Gebang Bekasi, to classify the result of landfill leachate treatment, and to provide an efficient methodf or the treatment ofleachates, in order to reduce pollutants' content to concentration values lower than the corresponding limits. The variables selected in this research were types of coagulant, dosage of coagulant, and time duration of ozonation process. Parameters selected in this research were colour, taste, pH, Chemical Oxygen Demand ( COD), Total of Suspended Solid ( TSS), Chloride ion (Cl) and ammonia ion( NH4+). The result of research have shown that the best optimum method of landfall leachate treatment was coagulation-ozonation combination process using FeC13 0.25% as a coagulant and a ozonator (0.25 g 03//h) for 75 minutes at pH of 9. The process succeed to degrade the value of COD, Cl, NII; were about 90,91%, 13,45% , 6,68%, respectively and category of B grade for treated leachate.

Degradation of Phenol in Pharmaceutical Wastewater using TiO2/Pumice and O3/Active Carbon R. Ratnawati; E. Enjarlis; Yuli Amalia Husnil; Marcelinus Christwardana; S. Slamet
Bulletin of Chemical Reaction Engineering & Catalysis 2020: BCREC Volume 15 Issue 1 Year 2020 (April 2020)
Publisher : Department of Chemical Engineering - Diponegoro University

Phenol is a toxic organic compound that detectable in the pharmaceutical wastewater, and therefore it should be eliminated. This study aims to degrade phenol in the pharmaceutical wastewater treatment using Advanced Oxidation Processes (AOPs) include the photocatalytic process applying Titanium Oxide (TiO2) that immobilized on pumice stone (PS), as well as ozone process with O3 and O3/granulated activated carbon (GAC). Degradation system used two configuration reactors that worked alternately at pH 3 and 9. Photocatalysis was conducted for 4 hours in the photoreactor that equipped with mercury lamp as a photon source, while ozonation was performed for 1 hour in the cylinder glass reactor contained an ozone generator. Phenol degradations were done by photocatalysis, ozonation, photocatalysis followed by ozonation and vice versa. The FESEM-EDS and XRD results depicted that TiO2 has impregnated on pumice stone and FESEM characterization also indicated that the photocatalyst spread across the surface of the pumice stone. BET analysis results in an increased surface area of the PS-TiO2 by 3.7 times, whereas bandgap energy down to 3 eV. It can be concluded that ozone process (with O3/GAC) that followed by photocatalysis at pH 9 could treat the liquid waste with phenol concentration 11.2 down to 1.2 ppm that nearly according to the discharge standards quality (1 ppm). Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Homogeneous and heterogeneous catalytic ozonation of endosulfan with activated carbon as catalyst E Enjarlis; Setijo Bismo; S Slamet; Roekmijati W Soemantojo
Jurnal Teknik Kimia Indonesia Vol 6, No 3 (2007)
Publisher : ASOSIASI PENDIDIKAN TINGGI TEKNIK KIMIA INDONESIA (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jtki.2007.6.3.3

Homogeneous and heterogeneous catalytic ozonation of endosulfan with activated carbon as catalystCatalytic ozonation of endosulfan with the presence of activated carbon as catalyst was investigated at neutral pH and different temperatures. The model kinetics was developed based on the mechanism of catalytic decomposition ozone, namely homogeneous and heterogeneous decomposition reaction. This study focuses on determining the contribution of homogeneous and heterogeneous reaction to endosulfan removal in catalytic ozonation with activated carbon as catalyst. Endosulfan was selected as a target of study because it is organic pollutant and organic chlorine pesticide (OCPs) groups that may cause a serious environmental concern. The use of activated carbonfrom Bogar Forest Centre actually provides a slightly contribution in enhancing endosulfan oxidation reaction with ozone. This is because endosulfan has sulfide group or sulfur element that is very reactive to ozone. Even though, the amount of OH increases because of ozonation with activated carbon use. The heterogeneous and homogeneous reaction contributions at neutral pH and temperature range of 20- 30oC were 11-21% and 79- 89% from overall endosulfan removal in catalytic ozonation with promoted by of activated carbon, respectively.Keywords: Activated Carbon, Catalytic Ozonation, Endosulfan AbstrakOzonasi katalitik endosulfan dengan adanya katalis karbon aktif dilakukan pada pH netral dan suhu yang berbeda-beda. Persamaan kinetika reaksi dikembangkan berdasarkan mekanisme reaksi dekomposisi ozon secara katalitik yaitu reaksi homogen dan heterogen. Penelitian ini ditujukan terutama untuk menentukan kontribusi reaksi homogen dan heterogen terhadap penyisihan endosulfan di dalam ozonasi katalitik dengan karbon aktif sebagai katalis.Endosulfan dipilih sebagai sasaran penelitian karena merupakan polutan organik dan kelompok pestisida organoklorida (OCPs) yang menjadi perhatian serius di lingkungan. Karbon aktif yang digunakan berasal dari Balai Hutan Bogar yang ternyata memberikan pengaruh kecil terhadap peningkatan reaksi oksidasi endosulfan dengan ozon. Hal ini disebabkan endosulfan mempunyai gugus sulfida atau sulfur yang sang at reaktif terhadap ozon. Meskipun, jumlah OH meningkat disebabkan penggunaan ozonasi dengan karbon aktf. Kontribusi reaksi homogen dan heterogen terhadap penyisihan endosulfan pada kondisi pH netral dan suhu 20-30 oC masing-masing sebesar 79- 89% dan 11- 21% dari total penyisihan endosulfan dalam ozonasi katalitik dengan dipromosikan oleh karbon aktifKata kunci: Endosulfan, Karbon Aktif, Ozonasi Katalitik

PEMBUATAN SABUN TRANSPARAN BERBASIS VIRGIN COCONUT OIL DENGAN PENAMBAHAN ADITIF MINYAK SEREH: Pemanfaatan Limbah Dedak Padi Menjadi Minyak Sebagai Bahan Baku Obat Sri Handayani; Melati Zahra Nur Abrar; Olivia Yolanda Bellanimalona; Enjarlis Enjarlis
JURNAL ILMU PENGETAHUAN DAN TEKNOLOGI (IPTEK) Vol. 5 No. 2 (2021): Jurnal Ilmu Pengetahuan dan Teknologi (IPTEK)
Publisher : Institut Teknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31543/jii.v5i2.185

Abstrak Dedak padi adalah hasil samping dari pengolahan padi yang umumnya digunakan untuk makanan ternak. Minyak dedak padi dapat digunakan sebagai bahan baku bidang farmasi, kosmetik, dan minyak pangan. Tujuan dari penelitian ini adalah untuk mendapatkan konsentrasi asam fosfat dan jenis adsorben terbaik yang digunakan dalam pemurnian minyak dedak padi dan diharapkan akan diperoleh minyak dedak padi yang memenuhi standar baku mutu untuk obat dengan melihat 4 parameter, yaitu bilangan asam, bilangan peroksida, bilangan iodin, dan komposisi asam lemak. Proses pemurnian dilakukan dengan 3 tahap, yaitu proses degumming, netralisasi, dan adsorpsi. Variabel konsentrasi asam fosfat yang digunakan, yaitu 6, 9, dan 12% (v/v) terhadap minyak dan jenis adsorben, yaitu zeolit dan bentonit dengan pemakaian adorben 25% dari berat minyak dedak padi kasar. Hasil penelitian didapatkan bilangan asam dari tiap variabel konsentrasi berturut-turut nilainya adalah 11,54; 6,6; 6,64%, bilangan peroksida adalah 10; 9,77; 2,36 mgrek/kg, dan bilangan iodin adalah 103,50; 126,45 dan 73,42 gr I2/gr minyak. Hasil pemurnian terbaik dari ketiga parameter tersebut terdapat pada konsentrasi asam fosfat 9% yang kemudian dilanjutkan dengan proses netralisasi menggunakan NaOH dan proses adsorpsi dengan menggunakan dua jenis adsorben, yaitu zeolit dan bentonit. Hasil analisis asam lemak menggunakan GCMS pada adsorben zeolit adalah 41,4% asam oleat dan 25,7% asam linoleat, dan pada adsorben bentonit adalah 42,6% asam oleat dan 20,7% asam linoleat. Dari hasil analisis asam lemak tersebut, kedua jenis adsorben baik zeolit maupun bentonit dapat digunakan sebagai adsorben pada proses pemurnian minyak dedak padi karena memberikan nilai komposisi asam lemak yang memenuhi persyaratan sebagai bahan baku obat. Kata Kunci : degumming, asam fosfat, adsorben, minyak dedak padi, asam oleat

PENGOLAHAN LINDI TPA DENGAN METODE KOAGULASI DAN OZONASI Latin Hanum Lalasari; Enjarlis Enjarlis
Widyariset Vol 12, No 1 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

Landfilling of municipal waste is a major problem of the waste management system in Indonesia. The generated leachate must be appropriately treated before being discharged into the environment because it ivas toxic. The aim of this research was to compare the coagulation, ozonation, coagulation-ozonation, and ozonation- coagulation processes of landfill leachate at TPA Bantar Gebang Bekasi, to classify the result of landfill leachate treatment, and to provide an efficient methodf or the treatment ofleachates, in order to reduce pollutants' content to concentration values lower than the corresponding limits. The variables selected in this research were types of coagulant, dosage of coagulant, and time duration of ozonation process. Parameters selected in this research were colour, taste, pH, Chemical Oxygen Demand ( COD), Total of Suspended Solid ( TSS), Chloride ion (Cl) and ammonia ion( NH4+). The result of research have shown that the best optimum method of landfall leachate treatment was coagulation-ozonation combination process using FeC13 0.25% as a coagulant and a ozonator (0.25 g 03//h) for 75 minutes at pH of 9. The process succeed to degrade the value of COD, Cl, NII; were about 90,91%, 13,45% , 6,68%, respectively and category of B grade for treated leachate.

Evaluation of Total Hardness and Qualitative Analysis of Boiler Water at the Food Jam Industry, Tangerang, Indonesia Satrio Kuntolaksono; Imam Wicaksono; Febrianty Emilia; Enjarlis Enjarlis; Linda Aliffia Yoshi
Journal of Bioresources and Environmental Sciences Vol 1, No 3 (2022): December 2022
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jbes.2022.15826

Food industry is one of the most crucial and rapidly growing economic sectors in Indonesia. One of the examples is the food jam industry. This industry was located in Tangerang, Indonesia. The majority of the food jam industry uses its own source of water, so this part is also important to water producers in Indonesia. Water used in the food jam industry should meet the requirements of at least drinking water quality, so the factories need to treat the water. Good quality water is water that requires good physical, chemical, and bacteriology properties. Hard water is a term known for water that contains a high concentration of minerals such as Calcium (Ca) and Mag-nesium (Mg). Moreover, water with very high degrees of hardness is harmful to health. In this study, we want to evaluate and determine the pH, total hardness, and total dissolved solids (TDS) at three different times namely morning, midday, and afternoon. The results obtained in the range of pH analysis are 6.98 to 7.99 with all cover times. The total hardness in the boiler water and the TDS are around 252.6 to 388.2 mg/L and 310 to 406 mg/L, respectively. These results indicated that it has fulfilled the requirements for total hardness values under the Minister of Health Regulations (Permenkes) No. 492/Menkes/Per/IV/2010.

Zinc Removal from ZnO Industrial Wastewater by Hydroxide Precipitation and Coagulation Methods: The Role of pH and Coagulant Dose Ratnawati Ratnawati; Marcelinus Christwardana; Sudirman Sudirma; Enjarlis Enjarlis
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 11 No. 2 (2020)
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2020.v11.no2.p35-42

Liquid waste from the ZnO industry must be treated to meet the quality standards of wastewater into water bodies, according to the Minister of Environment Regulations No.5, 2014. It still contains 79 mg/L of Zn metal, cloudy with turbidity above 500 NTU, and COD value around 222 mg/L. This study aims to determine the effect of pH on reducing Zn metal and the coagulant dose to minimize turbidity and COD in liquid waste produced by the ZnO factory in Depok, West Java. The waste treatment has been carried out by adding alkaline to neutralize the acid conditions in the equalization basin. However, the results have not met the requirements. It is necessary to vary the pH (8.5; 9.0; 9.5; 10.0 and 10.5) to precipitate of Zn optimally, modify the dose of coagulants (50; 100 and 150 mg/L) and reaction times (10; 15 and 20 minutes) to reduce its turbidity and COD concentration. The best results were obtained at a pH of 9.5 with a coagulant dose of 50 mg/L and a reaction time of 10 minutes. This condition can reduce Zn concentration (79 to 3.71 mg/L), turbidity (557 to 1.42 NTU), COD (222 to 68 mg/L) with a removal efficiency of 95.3%; 99.7%; and 69.4% respectively. These values have met the standard requirements according to government regulations.

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