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INDONESIA
CHEMICA Jurnal Teknik Kimia
Published by Universitas Ahmad Dahlan
ISSN : 2355875X     EISSN : 23558776     DOI : 10.26555
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Energy
CHEMICA Jurnal Teknik Kimia ISSN, 2355-875X (print) 2355-8776 (online) is a journal that publishes manuscripts or scientific papers in Chemical Engineering. The scope of this journal covers chemical reaction techniques, separation, optimization, process control, process system engineering, waste treatment, food and material technology. Journals are published in print and online twice a year, in June and December by Chemical Engineering Program, Faculty of Industrial Technology, Universitas Ahmad Dahlan Yogyakarta.
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Articles 10 Documents
 1 
Search results for , issue "Vol 2, No 1 (2015): Juni 2015" : 10 Documents clear
Catalytic Pyrolysis of Biomass to Synthesize Bio-oil and Chemicals: A Review Dewayanto, Nugroho; Nordin, Mohd Ridzuan
CHEMICA: Jurnal Teknik Kimia Vol 2, No 1 (2015): Juni 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (508.682 KB) | DOI: 10.26555/chemica.v2i1.4566

Abstract

Increasing of global energy demand and depletion of fossil fuels reserves encourage people to search alternative energy resources. Biomass becomes promising candidate as alternative energy sources since their sustainability. Pyrolysis is one of method to convert biomass into bio-fuel. Almost all of biomass materials can be converted into products by pyrolysis process. However, quality of bio-oil produced by pyrolysis is still considered as low quality, due to their high oxygen content and acidity. This paper provides a critical review of catalytic pyrolysis of biomass to produce bio-oil with better properties. Types of catalysts are discussed in this manuscript, as well as their capability to reduce the oxygen content of product and enhance the properties of bio-oils.
KARAKTERISTIK ARANG AKTIF DARI TEMPURUNG KELAPA DENGAN PENGAKTIVASI H2SO4 VARIASI SUHU DAN WAKTU Jamilatun, Siti; Salamah, Siti; Isparulita, Intan Dwi
CHEMICA: Jurnal Teknik Kimia Vol 2, No 1 (2015): Juni 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.526 KB) | DOI: 10.26555/chemica.v2i1.4562

Abstract

Activated charcoal is charcoal that has activated for increasing its surface area by opening the pores so that increase the adsorption power. The surface area of the activated charcoal is between 300 and 3500 m2/g. Adsorption power from activated charcoal is very large, i.e. ¼ to 10 times the weight of activated charcoal. Activated charcoal is a good adsorbent for the adsorption of gases, liquids, and solution. Characteristics of activated charcoal which are moisture content, ash content, and absorption of the iodine. Manufacture of activated charcoal begins with soaking for 24 hours using 2N H2SO4 solution, after it was drained and then roasted to remove the remaining water. Moisture content test was doing by weighing 1 gram of activated charcoal and then put it ini the oven at 105-1100C temperature for 120 minutes. Ash content test was by weighing 1 gram of activated charcoal and put in the furnace at a temperature of 5000C for 30 minutes, raise the temperature to 8150C for 90 minutes. Determination of the absorption of iodine is to weigh approximately 0.5 gram of activated charcoal and mix with 50 ml of iodine solution 0,1 N. Shake it for 15 minutes. Take 10 ml of the sample solution and titrate with natrim thio sulfate solution 0.1 N. Adding amylum solution of 1% as an indicator to the titration result becomes colorless.Pada penelitian ini dihasilkan kondisi optimum pada suhu pengovenan 1000oC selama 60 menit. Arang aktif yang didapatkan pada kondisi ini memiliki kemampuan adsorbsi yang baik dengan kadar penyerapan iod yang tinggi sebesar 529,94 mg I2/gram arang.In this research produced the optimum conditions of oven temperature 10000C for 60 minutes. Activated charcoal obtained under these conditions has a good adsorption capability with high levels of iodine absorption of 529.94 mg I2/g charcoal.
Pengaruh Panjang Kolom Distilasi Bahan Isian Terhadap Hasil Produk Cair Sampah Plastik Azizah, Isti Nur; Sari, Ninda Puspita; Maryudi, Maryudi
CHEMICA: Jurnal Teknik Kimia Vol 2, No 1 (2015): Juni 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (557.252 KB) | DOI: 10.26555/chemica.v2i1.4563

Abstract

Plastic waste is a problem that has to be taken seriously for the pollution of the environment, especially for land contamination. For now, the handling of plastic waste normally disposed (landfills), burned or recycled (recycle). At burning of plastic waste is usually carried out by pyrolysis method to produce plastic oil. To get the maximum results needed further analysis in the form of purification by distillation, where the distillation is a method that can be used for advanced analysis, one with a distillation column. Fractional distillation is often called the distillation column is to separate liquid components, two or more, of a solution based on differences in their boiling points. This distillation can also be used to mix with boiling point less than 20°C and work at atmospheric pressure or low pressure. Application of this type is used in the distillation of crude oil industry, to separate the components in the crude oil distillation Differences simple fractionation and distillation is the fractionation column. In this column warming occurs gradually with different temperatures on each license plate. Different heating is intended for refining distillates from the plates underneath. Getting to the top, the less volatile liquid. The distillation process depends on the characteristics of the vapor pressure of a liquid mixture of components.The distillate was obtained at temperature of 195oC, 200oC, 220oC, 235oC and 240oC and the most products component of pyrolysis plastic in previous research was obtain at 195oC, 200oC and 220oC
Adsorption Process for Acrylic Acid Removal from Wastewater Mat Saad, Nur Sakinah
CHEMICA: Jurnal Teknik Kimia Vol 2, No 1 (2015): Juni 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (557.927 KB) | DOI: 10.26555/chemica.v2i1.4559

Abstract

The objectives of this study were to develop the mathematical model of the adsorption process of the acrylic acid by using the activated carbon and also to validate the simulation of the adsorption process by using the experimental data. Simulation of the adsorption process is necessary to understand the acrylic acid removal using adsorption process. Acrylic acid is removed from the waste water because it can cause serious damage to the environment due to its high toxicity for the aquatic organisms. As a conclusion, the objective is expected to achieve. The new mathematical model of the adsorption process of the acrylic acid by using the activated carbon can be created. The validation of the simulation is carried out to compare the simulation data with the experiment data.
PENGARUH METODE KOAGULASI, SEDIMENTASI DAN VARIASI FILTRASI TERHADAP PENURUNAN KADAR TSS, COD DAN WARNA PADA LIMBAH CAIR BATIK Rahmah, Rahmah; Mulasari, Surahma Asti
CHEMICA: Jurnal Teknik Kimia Vol 2, No 1 (2015): Juni 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (415.197 KB) | DOI: 10.26555/chemica.v2i1.4560

Abstract

Batik  industry  in  Indonesia  increased,  so  that  the  impact  result  from the production  process  in  the  form  of  wastewater  is  increasing.  Wastewater disposal after staining and   washing    process    without    processing    will    improve environmental contamination such as TSS, COD and color levels. The problems of batik wastewater contamination can be resolved by treatment of wastewater in chemistry and physics. One way batik wastewater treatment are coagulation, sedimentation and filtration. Filtration media are used as filter media is activated charcoal, quartz sand and zeolite. The purpose  of  this  research  to  determine  the  effect  of  coagulation,  sedimentation  and filtration variation method to decreased levels of TSS, COD and color in the wastewater of batik. The type of this research was a true experiment with pre-test post-test group design.  Samples  of  this  research  were  batik  wastewater  with  levels  of  TSS,  COD  and color  are  818  mg/  l,  1133,57  mg/  l  and  100  TCU.  Data analyzed using one-way ANOVA. The  result  after  treatment  of  coagulation,  sedimentation  and  filtration  variety occurs  decreased  levels  of  TSS,  COD  and  color  on  filtration  variation  of  activated charcoal  and  quartz  sand,  respectively  for  99,8%,  99,49%  and  99,6%,  variation  of  the zeolite filtration and activated charcoal was, 99,6%, 92,31% and 99,5%, and  variations in zeolite filtration and quartz sand was 99,7%, 89,92% and 99,3%. Based on the statistical test using ANOVA test on the TSS levels were obtained p= 0,190, while the COD were obtained value of p= 0,008 and the value of color was p= 0,017. The methods of coagulation, sedimentation and filtration variation using activated charcoal, quartz sand and zeolite can reduce TSS, COD and color levels.  There is no difference between the   variation of filtration to decrease levels of TSS, while there is a difference between the variation filtration to decreased levels of effluent COD and color Batik.
Catalytic Pyrolysis of Biomass to Synthesize Bio-oil and Chemicals: A Review Nugroho Dewayanto; Mohd Ridzuan Nordin
CHEMICA: Jurnal Teknik Kimia Vol 2, No 1 (2015): Juni 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (508.682 KB) | DOI: 10.26555/chemica.v2i1.4566

Abstract

Increasing of global energy demand and depletion of fossil fuels reserves encourage people to search alternative energy resources. Biomass becomes promising candidate as alternative energy sources since their sustainability. Pyrolysis is one of method to convert biomass into bio-fuel. Almost all of biomass materials can be converted into products by pyrolysis process. However, quality of bio-oil produced by pyrolysis is still considered as low quality, due to their high oxygen content and acidity. This paper provides a critical review of catalytic pyrolysis of biomass to produce bio-oil with better properties. Types of catalysts are discussed in this manuscript, as well as their capability to reduce the oxygen content of product and enhance the properties of bio-oils.
PENGARUH METODE KOAGULASI, SEDIMENTASI DAN VARIASI FILTRASI TERHADAP PENURUNAN KADAR TSS, COD DAN WARNA PADA LIMBAH CAIR BATIK Rahmah Rahmah; Surahma Asti Mulasari
CHEMICA: Jurnal Teknik Kimia Vol 2, No 1 (2015): Juni 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (415.197 KB) | DOI: 10.26555/chemica.v2i1.4560

Abstract

Batik industry in Indonesia increased so that the impact resulting from the production process in the form of wastewater is increasing. Wastewater disposal after staining and washing process without processing will improve environmental contamination such as TSS, COD, and color levels. The problems of batik wastewater contamination can be resolved by the treatment of wastewater in chemistry and physics. One way batik wastewater treatment is coagulation, sedimentation, and filtration. Filtration media are used as filter media is activated charcoal, quartz sand, and zeolite. The purpose of this research is to determine the effect of the coagulation, sedimentation, and filtration variation method on decreased levels of TSS, COD, and color in the wastewater of batik. The type of this research was a true experiment with a pre-test post-test group design. Samples of this research were batik wastewater with levels of TSS, COD, and the color is 818 mg/ l, 1133.57 mg/ l, and 100 TCU. Data was analyzed using one-way ANOVA. The result after treatment of coagulation, sedimentation, and filtration variety occurs decreased levels of TSS, COD, and color on filtration variation of activated charcoal and quartz sand, respectively for 99.8%, 99.49% and 99.6%, variation of the zeolite filtration and activated charcoal was, 99.6%, 92.31%, and 99.5%, and variations in zeolite filtration and quartz sand were 99.7%, 89.92%, and 99.3%. Based on the statistical test using the ANOVA test on the TSS levels were obtained p= 0.190, while the COD was obtained a value of p= 0.008 and the value of color was p= 0.017. The methods of coagulation, sedimentation, and filtration variation using activated charcoal, quartz sand, and zeolite can reduce TSS, COD, and color levels. There is no difference between the variation of filtration to decrease levels of TSS, while there is a difference between the variation filtration to decreased levels of effluent COD and color Batik.
KARAKTERISTIK ARANG AKTIF DARI TEMPURUNG KELAPA DENGAN PENGAKTIVASI H2SO4 VARIASI SUHU DAN WAKTU Siti Jamilatun; Siti Salamah; Intan Dwi Isparulita
CHEMICA: Jurnal Teknik Kimia Vol 2, No 1 (2015): Juni 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.526 KB) | DOI: 10.26555/chemica.v2i1.4562

Abstract

Activated charcoal is charcoal that has been activated for increasing its surface area by opening the pores so increases the adsorption power. The surface area of the activated charcoal is between 300 and 3500 m2/g. Adsorption power from activated charcoal is very large, i.e. ¼ to 10 times the weight of activated charcoal. Activated charcoal is a good adsorbent for the adsorption of gases, liquids, and solutions. Characteristics of activated charcoal are moisture content, ash content, and absorption of the iodine. Manufacture of activated charcoal begins with soaking for 24 hours using 2N H2SO4 solution after it was drained and then roasted to remove the remaining water. Moisture content test was done by weighing 1 gram of activated charcoal and then put it in the oven at 105-1100C temperature for 120 minutes. Ash content test was by weighing 1 gram of activated charcoal and put in the furnace at a temperature of 5000C for 30 minutes, raise the temperature to 8150C for 90 minutes. Determination of the absorption of iodine is to weigh approximately 0.5 grams of activated charcoal and mix it with 50 ml of iodine solution 0.1 N. Shake it for 15 minutes. Take 10 ml of the sample solution and titrate with natrium thiosulfate solution 0.1 N. Adding amylum solution of 1% as an indicator to the titration result becomes colorless.This research produced the optimum conditions of oven temperature 10000C for 60 minutes. Activated charcoal obtained under these conditions has a good adsorption capability with high levels of iodine absorption of 529.94 mg I2/g charcoal.
Pengaruh Panjang Kolom Distilasi Bahan Isian Terhadap Hasil Produk Cair Sampah Plastik Isti Nur Azizah; Ninda Puspita Sari; Maryudi Maryudi
CHEMICA: Jurnal Teknik Kimia Vol 2, No 1 (2015): Juni 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (557.252 KB) | DOI: 10.26555/chemica.v2i1.4563

Abstract

Plastic waste is a problem that has to be taken seriously for the pollution of the environment, especially for land contamination. For now, the handling of plastic waste is normally disposed (landfills), burned, or recycled (recycle). The burning of plastic waste is usually carried out by the pyrolysis method to produce plastic oil. To get the maximum results needed further analysis in the form of purification by distillation, where the distillation is a method that can be used for advanced analysis, one with a distillation column. Fractional distillation often called the distillation column is to separate liquid components, two or more, of a solution based on differences in their boiling points. This distillation can also be used to mix with a boiling point of less than 20°C and work at atmospheric pressure or low pressure. Application of this type is used in the distillation of crude oil industry, to separate the components in the crude oil distillation Differences simple fractionation and distillation is the fractionation column. In this column, warming occurs gradually with different temperatures on each license plate. Different heating is intended for refining distillates from the plates underneath. Getting to the top, the less volatile liquid. The distillation process depends on the characteristics of the vapor pressure of a liquid mixture of components.The distillate was obtained at a temperature of 195oC, 200oC, 220oC, 235oC, and 240oC and the most products component of pyrolysis plastic in previous research was obtained at 195oC, 200oC, and 220oC
Adsorption Process for Acrylic Acid Removal from Wastewater Nur Sakinah Mat Saad
CHEMICA: Jurnal Teknik Kimia Vol 2, No 1 (2015): Juni 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (557.927 KB) | DOI: 10.26555/chemica.v2i1.4559

Abstract

The objectives of this study were to develop the mathematical model of the adsorption process of the acrylic acid by using the activated carbon and also to validate the simulation of the adsorption process by using the experimental data. Simulation of the adsorption process is necessary to understand the acrylic acid removal using adsorption process. Acrylic acid is removed from the waste water because it can cause serious damage to the environment due to its high toxicity for the aquatic organisms. As a conclusion, the objective is expected to achieve. The new mathematical model of the adsorption process of the acrylic acid by using the activated carbon can be created. The validation of the simulation is carried out to compare the simulation data with the experiment data.

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