cover
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota semarang,
Jawa tengah
INDONESIA
Jurnal Bahan Alam Terbarukan
ISSN : 23030623     EISSN : 24072370     DOI : -
Core Subject : Science,
This journal presents articles and information on research, development and applications in biomass conversion processes (thermo-chemical conversion; physico-chemical conversion and bio-chemical conversion) and equipment to produce fuels, power, heat, and value-added chemicals from biomass. A biorefinery takes advantage of the various components in biomass and their intermediates therefore maximizing the value derived from the biomass feedstock. A biorefinery could, for example, produce one or several low-volume, but high-value, chemical or nutraceutical products and a low-value, but high-volume liquid transportation fuel such as biodiesel or bioethanol (see also alcohol fuel). The high-value products increase profitability, the high-volume fuel helps meet energy needs, and the power production helps to lower energy costs and reduce greenhouse gas emissions from traditional power plant facilities. Future biorefineries may play a major role in producing chemicals and materials that are traditionally produced from petroleum.
Arjuna Subject : -
Articles 12 Documents
Search results for , issue " Vol 4, No 2 (2015): December 2015" : 12 Documents clear
PEMBUATAN PUPUK ORGANO-MINERAL FERTILIZER (OMF) PADAT DARI LIMBAH INDUSTRI BIOETANOL (VINASSE) Kusumaningtyas, Ratna Dewi; Oktafiani, Oktafiani; Hartanto, Dhoni; Handayani, Prima Astuti; Muhammad, Dimas Rahadian Aji
Jurnal Bahan Alam Terbarukan Vol 4, No 2 (2015): December 2015
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v4i2.4189

Abstract

Organo-mineral fertilizer solid was generated from liquid-waste vinasse with the addition of other materials as variations such as filter cake, boiler ash, urea, and NPK through the evaporation of water content in the material. Each solid OMF has a different mixture. OMF A made of evaporated vinasse or sticky vinasse, OMF B made of vinasse and urea, OMF C made from vinasse and filter cake, omf D made of vinasse and boiler ash 2 : 2, OMF E made of vinasse and boiler ash 2 : 4, OMF F made of vinasse, filter cake, and boiler ash, OMF A3 made of vinasse and 3% NPK, OMF made of A6 vinasse and 6% NPK, OMF A9 made of vinasse and 9% NPK. OMF analysis includes NPK and C/N ratio. Solid OMF which meet the SNI (Indonesian National Standard) are OMF A3, OMF A6, OMF A9 based on the quantity of NPK and C/N ratio where NPK is a source of primer macro nutrients on the plant while the C/N ratio equilibrium will determine the equilibrium of the vegetative and generative stage. NPK content and C/N ratio of OMF A3 are 0,63%, 0,45% ,0,38%, and 10,30, respectively.OMF A6 was 0,59%, 0,52% ,0,41%, and 13,66, respectively as well as OMF A9 are 0,68%, 0,52% ,0,45% and 14,16, respectively. OMF that meet SNI applied to the watermelon plants. OMF that gives the best results in plants is OMF A9 compossed from vinasse and NPK 9% because the plants growth faster shown based on plant height and stem diameter, leaf shape, flower and fruit appearance time. 
EKSTRAKSI MINYAK ATSIRI KULIT JERUK MANIS DENGAN METODE VACUUM MICROWAVE ASISSTED HYDRODISTILLATION Megawati, Megawati; kurniawan, rosa dwi
Jurnal Bahan Alam Terbarukan Vol 4, No 2 (2015): December 2015
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v4i2.4143

Abstract

The objective of this research is to extract essential oil of sweet orange peel (Citrus sinensis) using vacuum microwave assisted hydrodistillation (VMAHD) method. The operation condition was at various orange peel mass (50, 100, and 150 g) and extraction times (2, 4, 6, 8, and 10 min). The volume of water as solvent was about 300 mL. Before extraction, analysis of oil content in orange peel was conducted using solvent extraction by soxhlet method with 100 mL of n-hexane and 20 cycles number. The analysis resulted in the oils of sweet orange peel is about 3.2% v/w. Effect of extraction in vacuum conditions is studied by comparing the result of extraction in vacuum pressure to extraction at atmospheric pressure. The boiling temperature in atmospheric pressure was 80 oC and in vacuum pressure decreased to 50 oC. Thus oil yield in vacuum pressure is greater than at atmospheric pressure for 8 min of time. The experimental data showed that the oil yield is influenced by time; the longer time of extraction, oil yield obtained tends to be increased. In the material’s mass variation, oil yield tends to be decreased in percentage with increasing mass of material. The VMAHD method results on the oil content of 0.22% v/w yield obtained materials, test oil density of 0.84 g / mL, and essential oil dissolved in alcohol 70%. GC-MS analysis indicates that orange peel oil is composed of Limonene (96.69%), and Pinene (3.31%), which are in the class of sesquiterpenes
KARAKTERISASI EDIBLE FILM BERBAHAN DASAR EKSTRAK KARAGENAN DARI RUMPUT LAUT (Eucheuma cottonii) Fardhyanti, Dewi Selvia; Julianur, Syara Sofia
Jurnal Bahan Alam Terbarukan Vol 4, No 2 (2015): December 2015
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v4i2.4127

Abstract

Extraction process of carrageenan doing at 2 hours with temperature 80-90°C using sodium hidroxide with variant consentration of sodium hydroxide is 0,55N; 0,75N; 0,95N; 1,2N; 1,4N. The edible film makes with raw material carrageenan with 2 blended material is carrageenan composite with beeswax and the plasticizer sorbitol, along carrageenan with plasticizer sorbitol. The optimal yield from extraction process of carrageenan ressult at consentration of sodium hydroxide 1,2 N with value 43,42%. Optimal sulphate content get ressult at consentration of sodium hydroxide 0,45 N with value 10,28%. Optimal water content get ressult at consentration of sodium hydroxide 0,9 N with value 8,47%. Identification from FTIR to showing group of ester sulphate at spectrum 1227,67 cm-1. The identification chains of glicoxide at spectrum 1067,17 cm-1, the identification of group function 3,6 anhydrogalactose at spectrum 931,04 cm-1, and for group function galactose 4-sulphate can identification kind of kappa-carrageenan at spectrum 848,19 cm-1. Result of this ressearch showing the edible film makes with from blanded carrageenan composite and beeswax has best characteristic is high tensile strength with value 1,0755 MPa, percent elongation with 257,738% and miscible with value 15,45%.
PENGARUH PENAMBAHAN MAGNESIUM STEARAT DAN JENIS PROTEIN PADA PEMBUATAN BIODEGRADABLE FOAM DENGAN METODE BAKING PROCESS hendrawati, Nanik; Sofiana, Anna Rubi; Widyantini, Ilmi Nur
Jurnal Bahan Alam Terbarukan Vol 4, No 2 (2015): December 2015
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v4i2.4166

Abstract

Biodegradable foam with cassava starch, protein and chitosan as the basic ingredients can be produced by using baking process method. Variation on magnesium stearate amount and protein types gave different effect on the biodegradable foam quality. The amount of magnesium stearate was varied as 1; 1.6; 2.2; 2.8; 3.4 and 4 % w/w and the sources of protein used in this research were taken from soy bean, peanut and egg white. The foam produced in this research was then tested for its mechanical properties, water resistance and biodegradability. It was found that addition of magnesium stearate as much as 4% w/w reduced water adsorption and biodegradability of foam. Magnesium stearate affected the ability of absorption of water and foam degradation, but did not influence on tensile strength. Different types of protein also gave influence on water absorption, biodegradability and tensile strength. The best improvement of tensile strenght among the compounds tested was shown by soy bean based foam.
GRANULASI ABU LAYANG BATUBARA MENGGUNAKAN KARAGENAN DAN APLIKASINYA SEBAGAI ADSORBEN Pb(II) Astuti, Widi; Izzati, Indah Nurul
Jurnal Bahan Alam Terbarukan Vol 4, No 2 (2015): December 2015
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v4i2.4361

Abstract

The increase of electrical industry using coal as an energy source resulting in accumulated solid waste such as fly ash.Coal fly ash is mainly composed of some oxides including Al2O3, SiO2 having active siteand unburned carbon as a mesopore material that anables it to act as a potentialadsorbent.However, the use of powder coal fly ash as an adsorbent is quite complex, especially in the filtration installation, so difficult to be applied in the industry.The aim of this study is to carry out granulation of the coal fly ash with the addition of carrageenan as a binder to improve the mechanical and chemical stability thereby increasing the effectiveness and efficiency of the adsorption process. Coal fly ash wasreacted with sodium hydroxide solution and then granulated with the addition of carrageenan 10, 15 and 20 w/w. Granular coal fly ash was further characterized its specific surface area, functional group and morphology. Furthermore, granular and powder treated coal fly ash were tested their adsorption ability for ion Pb (II). The results show that the addition of carrageenan as a binder can change the characteristics of coal fly ash, decrease specific surface area and adsorption capability. The adsorption of Pb (II) by coal fly ash granular follows the Langmuir isotherm model with a constant value of is 0.173 and KLis 0.329.
THE EFFECT OF AMOUNT OF NATURAL ZEOLIT CATALYST IN PRODUCT OF POLYPROPILENE (PP) PLASTIC WASTE PYROLYSIS Juliastuti, Sri Rachmania
Jurnal Bahan Alam Terbarukan Vol 4, No 2 (2015): December 2015
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v4i2.4171

Abstract

To overcome the waste problem, especially plastic waste , environmental concerned scientists from various disciplines have conducted various research and actions. Catalytic pyrolysis processes was chosen as an alternative method to recycle plastic waste. The purpose of this experiment was to determine the effect of natural zeolit catalyst on the pyrolysis process with oxygen-free conditions to obtain maximum hydrocarbon compounds (gasoline fraction in C5-C9). The process of pyrolysis was conducted in 3.5 dm3 unstirred stainless steel semi-batch reactor. This process operated at atmospheric pressure with nitrogen injection. Plastic waste that used in this particular paper was 50 grams of polypropylene (PP). In pyrolysis process, natural zeolite catalysts was added 2,5 gram (5% weight of natural zeolite per weight of plastic waste samples), 5 gram (10% ), and 10 gram (20%). Temperature of pyrolysis was 450°C and were maintained until 30 minutes. Steam that produced from pyrolisis was condensed and analysed by gas chromatography–mass spectrometry (GC-MS) to determine yield of hydrocarbons produced. From the analysis of GC-MS, liquid products of pyrolysis contained lots of aromatic hydrocarbons. The optimal amount of catalyst that produce liquid with hydrocarbon compound that has the quality of gasoline was 10 gram (20%) with ≤C9 composition as 29,16% n-paraffin, 9,22% cycloparaffin, and 61,64% aromatics.
THE EFFECT OF AMOUNT OF NATURAL ZEOLIT CATALYST IN PRODUCT OF POLYPROPILENE (PP) PLASTIC WASTE PYROLYSIS Juliastuti, Sri Rachmania
Jurnal Bahan Alam Terbarukan Vol 4, No 2 (2015): December 2015
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v4i2.4171

Abstract

To overcome the waste problem, especially plastic waste , environmental concerned scientists from various disciplines have conducted various research and actions. Catalytic pyrolysis processes was chosen as an alternative method to recycle plastic waste. The purpose of this experiment was to determine the effect of natural zeolit catalyst on the pyrolysis process with oxygen-free conditions to obtain maximum hydrocarbon compounds (gasoline fraction in C5-C9). The process of pyrolysis was conducted in 3.5 dm3 unstirred stainless steel semi-batch reactor. This process operated at atmospheric pressure with nitrogen injection. Plastic waste that used in this particular paper was 50 grams of polypropylene (PP). In pyrolysis process, natural zeolite catalysts was added 2,5 gram (5% weight of natural zeolite per weight of plastic waste samples), 5 gram (10% ), and 10 gram (20%). Temperature of pyrolysis was 450C and were maintained until 30 minutes. Steam that produced from pyrolisis was condensed and analysed by gas chromatographymass spectrometry (GC-MS) to determine yield of hydrocarbons produced. From the analysis of GC-MS, liquid products of pyrolysis contained lots of aromatic hydrocarbons. The optimal amount of catalyst that produce liquid with hydrocarbon compound that has the quality of gasoline was 10 gram (20%) with ?C9 composition as 29,16% n-paraffin, 9,22% cycloparaffin, and 61,64% aromatics.
PEMBUATAN PUPUK ORGANO-MINERAL FERTILIZER (OMF) PADAT DARI LIMBAH INDUSTRI BIOETANOL (VINASSE) Kusumaningtyas, Ratna Dewi; Oktafiani, Oktafiani; Hartanto, Dhoni; Handayani, Prima Astuti; Muhammad, Dimas Rahadian Aji
Jurnal Bahan Alam Terbarukan Vol 4, No 2 (2015): December 2015
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v4i2.4189

Abstract

Organo-mineral fertilizer solid was generated from liquid-waste vinasse with the addition of other materials as variations such as filter cake, boiler ash, urea, and NPK through the evaporation of water content in the material. Each solid OMF has a different mixture. OMF A made of evaporated vinasse or sticky vinasse, OMF B made of vinasse and urea, OMF C made from vinasse and filter cake, omf D made of vinasse and boiler ash 2 : 2, OMF E made of vinasse and boiler ash 2 : 4, OMF F made of vinasse, filter cake, and boiler ash, OMF A3 made of vinasse and 3% NPK, OMF made of A6 vinasse and 6% NPK, OMF A9 made of vinasse and 9% NPK. OMF analysis includes NPK and C/N ratio. Solid OMF which meet the SNI (Indonesian National Standard) are OMF A3, OMF A6, OMF A9 based on the quantity of NPK and C/N ratio where NPK is a source of primer macro nutrients on the plant while the C/N ratio equilibrium will determine the equilibrium of the vegetative and generative stage. NPK content and C/N ratio of OMF A3 are 0,63%, 0,45% ,0,38%, and 10,30, respectively.OMF A6 was 0,59%, 0,52% ,0,41%, and 13,66, respectively as well as OMF A9 are 0,68%, 0,52% ,0,45% and 14,16, respectively. OMF that meet SNI applied to the watermelon plants. OMF that gives the best results in plants is OMF A9 compossed from vinasse and NPK 9% because the plants growth faster shown based on plant height and stem diameter, leaf shape, flower and fruit appearance time.
EKSTRAKSI MINYAK ATSIRI KULIT JERUK MANIS DENGAN METODE VACUUM MICROWAVE ASISSTED HYDRODISTILLATION
Jurnal Bahan Alam Terbarukan Vol 4, No 2 (2015): December 2015
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v4i2.4143

Abstract

The objective of this research is to extract essential oil of sweet orange peel (Citrus sinensis) using vacuum microwave assisted hydrodistillation (VMAHD) method. The operation condition was at various orange peel mass (50, 100, and 150 g) and extraction times (2, 4, 6, 8, and 10 min). The volume of water as solvent was about 300 mL. Before extraction, analysis of oil content in orange peel was conducted using solvent extraction by soxhlet method with 100 mL of n-hexane and 20 cycles number. The analysis resulted in the oils of sweet orange peel is about 3.2% v/w. Effect of extraction in vacuum conditions is studied by comparing the result of extraction in vacuum pressure to extraction at atmospheric pressure. The boiling temperature in atmospheric pressure was 80 oC and in vacuum pressure decreased to 50 oC. Thus oil yield in vacuum pressure is greater than at atmospheric pressure for 8 min of time. The experimental data showed that the oil yield is influenced by time; the longer time of extraction, oil yield obtained tends to be increased. In the materials mass variation, oil yield tends to be decreased in percentage with increasing mass of material. The VMAHD method results on the oil content of 0.22% v/w yield obtained materials, test oil density of 0.84 g / mL, and essential oil dissolved in alcohol 70%. GC-MS analysis indicates that orange peel oil is composed of Limonene (96.69%), and Pinene (3.31%), which are in the class of sesquiterpenes
KARAKTERISASI EDIBLE FILM BERBAHAN DASAR EKSTRAK KARAGENAN DARI RUMPUT LAUT (Eucheuma cottonii) Fardhyanti, Dewi Selvia; Julianur, Syara Sofia
Jurnal Bahan Alam Terbarukan Vol 4, No 2 (2015): December 2015
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v4i2.4127

Abstract

Extraction process of carrageenan doing at 2 hours with temperature 80-90C using sodium hidroxide with variant consentration of sodium hydroxide is 0,55N; 0,75N; 0,95N; 1,2N; 1,4N. The edible film makes with raw material carrageenan with 2 blended material is carrageenan composite with beeswax and the plasticizer sorbitol, along carrageenan with plasticizer sorbitol. The optimal yield from extraction process of carrageenan ressult at consentration of sodium hydroxide 1,2 N with value 43,42%. Optimal sulphate content get ressult at consentration of sodium hydroxide 0,45 N with value 10,28%. Optimal water content get ressult at consentration of sodium hydroxide 0,9 N with value 8,47%. Identification from FTIR to showing group of ester sulphate at spectrum 1227,67 cm-1. The identification chains of glicoxide at spectrum 1067,17 cm-1, the identification of group function 3,6 anhydrogalactose at spectrum 931,04 cm-1, and for group function galactose 4-sulphate can identification kind of kappa-carrageenan at spectrum 848,19 cm-1. Result of this ressearch showing the edible film makes with from blanded carrageenan composite and beeswax has best characteristic is high tensile strength with value 1,0755 MPa, percent elongation with 257,738% and miscible with value 15,45%.

Page 1 of 2 | Total Record : 12