Pengaruh Jenis Co-Solvent terhadap Rendemen dan Mutu Biodiesel secara Transesterifikasi In Situ Menggunakan Radiasi Gelombang Mikro

2016 ◽  
Vol 10 (2) ◽  
pp. 119-126
Author(s):  
Mahlinda Mahlinda ◽  
Fitriana Djafar
Keyword(s):  
Catalyst Concentration ◽  
Maximum Yield ◽  
Acid Value ◽  
Experimental Result ◽  
In Situ Transesterification ◽  
Yield And Quality ◽  
Solvent Type ◽  
Biodiesel Quality

The main purpose of this research was to observer effect co-solvent type (n-Hexane, chloroform and without co-solvent)  toward yield and quality of biodiesel via in situ transesterification process using microwave irradiation. The process was studied at microwave power 450 watt, reaction time 4 minutes, methanol to seed ratio 25:1 and catalyst concentration 5%. The physicochemical parameters of the biodiesel produced such as viscosity, density and acid value were analysed and compared with the SNI 7182-2012 standard. The experimental result showed the maximum yield biodiesel 78,32% obtained by using co-solvent chloroform.Test result of physicochemical properties (viscosity, density and acid value) of biodiesel products using co solvent n-Hexane, chloroform and without co solvent showed that these products conform to the SNI 7182-2012 standars. The type of co-solvent only affectedon biodiesel yield dan not affected on biodiesel quality (viscosity, density and acid value).  ABSTRAKTujuan penelitian ini adalah untuk mempelajari pengaruh jenis co-solvent (n-Hexane, chloroform dan tanpa co-solvent) terhadap rendemen dan mutu biodiesel secara trasesterifikasi in situ menggunakan radiasi gelombang mikro. Proses dilakukan pada daya gelombang mikro 450 watt, waktu reaksi 4 menit, perbandingan berat metanol terhadap bahan baku 25:1 dan jumlah katalis 5%. Parameter fisiko kimia dari produk biodiesel seperti viskositas, densitas dan angka asam di analisa dan dibandingkan dengan standar SNI 7182-2012 tentang biodiesel. Hasil penelitian menunjukkan rendemen maksimum biodiesel sebesar 78,32% diperoleh dengan menggunakan co-solvent chloroform. Hasil pengujian  karakteristik fisiko kimia (viskositas, densitas dan angka asam) dari produk biodiesel menggunakan co-solvent n-Hexane, chloroform dan tanpa co-solvent menunjukkan bahwa semua parameter ini masih memenuhi standar SNI 1782-2012 tentang biodiesel. Jenis co-solvent hanya berpengaruh pada rendemen biodiesel dan tidak berpengaruh terhadap mutu biodiesel (viskositas, densitas dan bilangan asam).Kata kunci: co-solvent, in situ transesterifikasi, microwave, rendemen, mutu   

scholarly journals In situ trans-esterification of oil-containing Jatropha curcas seeds to produce biodiesel fuel

2018 ◽  
Vol 11 (1) ◽  
pp. 41
Author(s):  
I Amalia Kartika ◽  
M Yani ◽  
D Ariono ◽  
Ph Evon ◽  
L Rigal
Keyword(s):  
Reaction Time ◽  
Acid Value ◽  
Biodiesel Fuel ◽  
Direct Production ◽  
Yield And Quality ◽  
Optimum Reaction ◽  
Biodiesel Quality ◽  
Jatropha Seed

The objective of this study was to investigate in situ trans-esterification allowing direct production biodiesel from jatropha seed. The influences of amount of KOH catalyst, methanol to seed ratio, amount of n-hexane to methanol and seed ratio, stirring speed, temperature and reaction time were examined to define the best performance of biodiesel yield and quality. Generally, methanol to seed ratio, amount of KOH and n-hexane to methanol and seed ratio affected biodiesel yield. An increase of biodiesel yield was observed as methanol to seed ratio, amount of KOH and n-hexane to methanol and seed ratio were increased. Stirring speed, temperature and reaction time did not affected biodiesel yield. Highest biodiesel yield (89%) was obtained under 6:1 methanol to seed ratio, 0.075 mole/L KOH in methanol, 3:3:1 n-hexane to methanol and seed ratio, 600 rpm stirring speed, 40 °C temperature and 6 h reaction time. The effect of process parameters on biodiesel quality was less important. In all experiments tested, the biodiesel quality was very good (acid value < 0.3 mg of KOH/g, viscosity < 5.5 cSt, saponification value > 183 mg of KOH/g). The quality of biodiesel produced under optimum reaction condition was in accordance with the Indonesian Biodiesel Standard. Keywords: biodiesel, in situ, jatropha seed, transesterificationAbstrakPenelitian ini bertujuan untuk memproduksi biodiesel secara langsung dari biji jarak pagar melalui proses transesterifikasi in situ. Parameter proses yang dipelajari adalah pengaruh konsentrasi katalis KOH, rasio metanol terhadap bahan, rasio n-heksan terhadap metanol dan bahan, kecepatan pengadukan, suhu dan waktu reaksi terhadap rendemen biodiesel dan kualitasnya. Rasio metanol terhadap bahan, konsentrasi KOH dan rasio n-heksan terhadap metanol dan bahan berpengaruh nyata terhadap rendemen biodiesel. Semakin tinggi rasio metanol terhadap bahan, konsentrasi KOH dan rasio n-heksan terhadap metanol dan bahan, rendemen biodiesel semakin meningkat. Kecepatan pengadukan, suhu dan waktu reaksi tidak berpengaruh nyata terhadap rendemen biodiesel. Rendemen biodiesel tertinggi (89%) diperoleh dari perlakuan rasio metanol terhadap bahan 6:1, 0.075 mol/L KOH dalam metanol, rasio n-heksan terhadap metanol dan bahan 3:3:1, kecepatan pengadukan 600 rpm, suhu 40 °C dan waktu reaksi 6 jam. Kualitas biodiesel yang dihasilkan dari proses transesterifikasi in situ biji jarak pagar pada seluruh perlakuan yang diuji sangat baik (bilangan asam < 0.3 mg KOH/g, viskositas < 5.5 cSt, bilangan penyabunan > 183 mg KOH/g), dan tidak dipengaruhi oleh parameter-parameter proses. Kualitas biodiesel yang dihasilkan dari kondisi proses optimum memenuhi Standar Biodiesel Indonesia.Kata kunci: biodiesel, in situ, biji jarak, transesterifikasi

scholarly journals Transesterifikasi In Situ Biji Kemiri (Aleurites moluccana L) Menggunakan Metanol Daur Ulang dengan Bantuan Gelombang Ultrasonik

2018 ◽  
Vol 37 (3) ◽  
pp. 295
Author(s):  
Mahlinda Mahlinda ◽  
Meuthia Busthan
Keyword(s):  
Reaction Time ◽  
Catalyst Concentration ◽  
Maximum Yield ◽  
Acid Value ◽  
Acid Number ◽  
In Situ Transesterification ◽  
Two Parameters ◽  
Aleurites Moluccana ◽  
Test Result

The purpose of this research was to study the effect of the use of recovered methanol for in situ transesterification reaction candlenut seed (Aleurites moluccana L) as a biodiesel bysonication. The influence of the ratio of recovered methanol to seed, catalyst concentration, reaction time and the temperature was investigated. Important properties of biodiesel such as density, viscosity and acid number were checked according to SNI 7182:2012 standards. The result showed that the maximum yield which has been obtained was 57,85% at recovered methanol to seed ratio 40:1, catalyst concentration 4%, reaction temperature 65 °C and reaction time 80 minutes. The test result of biodiesel properties showed that two parameters (density and viscosity)  were conformed to SNI 7182:2012 standards, meanwhile acid value was higher than the maximum standards. In conclusion, the recovered methanol was feasible to produce biodiesel via in situ transesterification but the yield was lower if compared with the use of fresh methanol.                                         ABSTRAKTujuan dari penelitian ini adalah untuk mempelajari penggunaan metanol daur ulang pada reaksi transesterifikasi in situ biji kemiri (Aleurites moluccana L) menjadi biodiesel menggunakan radiasi gelombang ultrasonik. Pengaruh dari rasio metanol daur ulang terhadap biji, jumlah katalis, waktu reaksi dan temperatur telah diteliti. Sifat penting dari biodiesel seperti densitas, viskositas dan bilangan asam telah diuji menurut satandar SNI 7182:2012. Hasil penelitian menunjukkan bahwa rendemen maksimum yang dapat diperoleh adalah 57,85% pada rasio metanol daur ulang tehadap biji 40:1, jumlah katalis 4%, temperatur reaksi 65 °C dan waktu reaksi 80 menit. Hasil pengujian sifat biodiesel menunjukkan bahwa dua paramater (densitas dan viskositas) telah memenuhi standar SNI 7182:2012, sementara bilangan asam lebih tinggi dari standar maksimum. Dapat disimpulkan bahwa metanol daur ulang cocok untuk memproduksi biodiesel secara in situ transesterifikasi tetapi rendemennya lebih rendah jika dibandingkan dengan penggunaan metanol baru.Kata kunci: Biodiesel; kemiri; transesterifikasi in situ; metanol daur ulang

scholarly journals YIELD AND QUALITY OF GRAPES AT VARIOUS LOAD RATES

Russian vine ◽  
2020 ◽  
Vol 14 ◽  
pp. 69-73
Author(s):  
N.A. Sirotkina ◽  
Keyword(s):  
Mass Concentration ◽  
Maximum Yield ◽  
Research Data ◽  
Yield And Quality ◽  
Russian Research Institute ◽  
Russian Research ◽  
Research Institute

The article presents research data on the de-pendence between the yield and quality of grapes and shoot load. The studies were car-ried out at the All-Russian Research Institute of Viticulture and Winemaking named after Ya.I. Potapenko, Novocherkassk, Rostov re-gion. On the root-own vineyards of the Per-venets Magaracha variety tolerant to phyllox-era, the following load rates were studied: 30; 35; 40; 45 shoots per bush. For two years of research, the maximum yield was obtained in plantations with a load of 45 shoots per plant: in 2019 - 23.2; in 2020 - 14.7 t / ha with the mass concentration of sugars in berry juice 183 and 170 g / dm3, respectively. The best indicators of the quality of grapes were marked in the variant with the minimum load of shoots in the experiment: the mass concen-tration of sugars in berry juice was 196 g / dm3 in 2019 and 180 g / dm3 in 2020; the concentration of titratable acids was 7.6 and 8.8 g / dm3, respectively.

scholarly journals Influence of basic soil tillage methods on fresh yield and quality of winter rape cultivars

2020 ◽  
Vol 15 (4) ◽  
pp. 335-342
Author(s):  
Anvar Sh. Gadzhikurbanov
Keyword(s):  
Crop Yields ◽  
Maximum Yield ◽  
Soil Tillage ◽  
Flowering Stage ◽  
Winter Rape ◽  
Yield And Quality ◽  
Significant Difference ◽  
Weed Infestation ◽  
The Republic

The development of rational system of basic soil tillage results in formation of sufficiently high crop yields. A two-factor field experiment was carried out to address these issues when cultivating winter rape cultivars on light chestnut soils of the Primorsko-Caspian sub-province of the Republic of Dagestan. VEM (standard), Elvis and Meteor winter rape cultivars were studied in the experiment. The following methods of soil tillage were studied: real tillage (control), subsoil tillage. The research revealed that there was no significant difference in agrophysical indicators between the soil cultivation variants. Data on weed infestation of winter rape fields showed that the number of weeds and their weight increased significantly after subsoil tillage. At the budding stage, the number of weeds increased 2.1-fold compared to the control (real tillage), and the weight of weeds increased 1.88-fold. During flowering stage, these indicators were 2.2 times higher. The maximum yield in all variants of the experiment was formed by Elvis cultivar - 44.9 and 41.4 t/ha, respectively, which is more than VEM (standard) and Meteor cultivars by 20.4 t/ha (7.9 %) and 20.0 t/ha (8.7 %), respectively. The yield of Meteor cultivar in these variants was also high and amounted to 41.6 and 38.1 t/ha, respectively, which was higher by 11.5 and 10.4 % compared with the standard. The greatest increase in the fresh yield was provided by real tillage. On average, the yield increased by 8.7 % for varieties in comparison with subsoil cultivation. Elvis cultivar formed the best quality indicators, followed by Meteor cultivar.

Effect of nitrogen on the yield and quality of irrigated onions (Allium cepa L.) cv. Cream Gold grown on siliceous sands

1990 ◽  
Vol 30 (6) ◽  
pp. 845 ◽  
Author(s):  
NA Maier ◽  
AP Dahlenburg ◽  
TK Twigden
Keyword(s):  
Field Experiments ◽  
Maximum Yield ◽  
Soluble Solids ◽  
Fresh Weight ◽  
Marketable Yield ◽  
Scale Thickness ◽  
Yield And Quality ◽  
Allium Cepa L ◽  
Nitrogen Rates

The effect of nitrogen (N), at rates up to 590 kg N/ha, on the yield and quality of Cream Gold onions grown on siliceous sands was investigated in field experiments conducted during 1987-88 (1 site) and 1988-89 (2 sites). As the rate of applied N increased there was a significant (P<0.001) increase in the fresh weight of tops harvested when the largest bulbs were 25-30 mm in diameter. Fresh weight of tops was significantly (P<0.001) correlated with final marketable yield of bulbs. Nitrogen application accelerated top senescence. Nitrogen-deficient plants had erect green tops at harvest. Marketable yield was significantly (P<0.01) increased and the yield of culls (unmarketable bulbs) was significantly (P<0.01) decreased as the rate of N increased at all sites. Nitrogen rates in the range 299-358 kg N/ha were required for 95% of maximum yield. Scale thickness increased significantly (P<0.05) and glucose and fructose concentrations decreased significantly (P<0.05) at 2 sites as the rate of applied N increased. Soluble solids and dry matter of bulbs were not affected by N. Bulb size increased as the rate of applied N increased, however, the magnitude of the effect varied between sites. Number of days to 10% sprouting during storage at 15 � 0.5�C was significantly increased as the rate of applied N increased up to 40 kg N/ha at 2 sites. We have concluded that for the cv. Cream Gold grown on siliceous sands, the high rates of fertiliser N required to maximise marketable yield and bulb size were not detrimental to quality.

C ase S tudy : Yield and quality of traditional senescent and stay-green sorghum and in situ ruminal disappearance of respective crop residues

2017 ◽  
Vol 33 (6) ◽  
pp. 748-755
Author(s):  
J.D. Sugg ◽  
P.B. Campanili ◽  
J.O. Sarturi ◽  
M.A. Ballou ◽  
S.J. Trojan
Keyword(s):  
Crop Residues ◽  
Stay Green ◽  
Yield And Quality

scholarly journals YIELD AND QUALITY OF GRAPES AT DIFFERENT LOAD RATES

Russian vine ◽  
2021 ◽  
Vol 15 ◽  
pp. 52-56
Author(s):  
N.A. Sirotkina ◽  
Keyword(s):  
Mass Concentration ◽  
Maximum Yield ◽  
Research Data ◽  
Yield And Quality ◽  
Rostov Region ◽  
Search Institute

The article presents research data on the de-pendence of the yield of vineyards and the quality of grapes on the load of shoots. The studies were carried out at the All-Russian Re-search Institute of Viticulture and Winemaking named after Ya.I. Potapenko, Novocherkassk, Rostov region. On grafted vineyards of the Krasnostop Zolotovsky variety, load rates were studied: 20; 25; 30; 35 shoots per bush. The conducted studies revealed: the maximum yield was obtained in plantings with a load of 35 shoots per plant and amounted to 5.78 t / ha with the best grape conditions in the experi-ment – the mass concentration of sugars in ber-ry juice was 284, and the titrated acids were 6.2 g/dm3.

A green method to increase yield and quality of bio-oil: ultrasonic pretreatment of biomass and catalytic upgrading of bio-oil over metal (Cu, Fe and/or Zn)/γ-Al2O3

RSC Advances ◽  
2015 ◽  
Vol 5 (101) ◽  
pp. 83494-83503 ◽  
Author(s):  
Surachai Karnjanakom ◽  
Guoqing Guan ◽  
Bayu Asep ◽  
Xiao Du ◽  
Xiaogang Hao ◽  
...  
Keyword(s):  
Green Method ◽  
Ultrasonic Pretreatment ◽  
Catalytic Upgrading ◽  
Yield And Quality ◽  
Bio Oil

A green method is developed to increase the yield and quality of bio-oil by ultrasonic pretreatment of biomass followed by in situ catalytic upgrading of bio-oil over metal (Cu, Fe and/or Zn)/γ-Al2O3.

scholarly journals Influence of agrotechnical receptions and fertility soils on the yield of the Monsoon variety in the conditions of the Primorsky Territory

2020 ◽  
Author(s):  
Р.В. ТИМОШИНОВ ◽  
Л.Е. БАБИНЕЦ ◽  
Е.Ж. КУШАЕВА ◽  
А.А. ДУБКОВ ◽  
А.Г. КЛЫКОВ
Keyword(s):  
High Efficiency ◽  
Maximum Yield ◽  
Mineral Fertilizers ◽  
Row Crops ◽  
Seed Rate ◽  
Yield And Quality ◽  
Soybean Plants ◽  
Fertilizer System ◽  
Germinating Seeds

Представлены результаты исследований реакции растений сои сорта Муссон на изменение норм высева, способа посева и влияния различных систем удобрений на урожайность и качество семян в условиях Приморского края. Для получения максимальной урожайности сои сорта Муссон рекомендуется проводить рядовой посев на 15 см с нормой высева 500–600 тыс. или широкорядный посев на 30 см с нормой высева 550–650 тыс. всхожих семян на 1 га. Показана высокая эффективность комплексной системы удобрений с одинарной дозой минеральных удобрений (Н40 + И4,5 + 1NPK). The article presents the results of studies on the reaction of soybean plants of the Monsoon variety to changes in seeding rates, method of sowing, the influence of various fertilizer systems on the yield and quality of soybean seeds in the Primorsky Territory. It has been established that in order to obtain maximum yield, the soybean Monsoon variety is recommended to be sown with row crops of 15 cm with a seed rate of 500–600 thousand germinating seeds per 1 ha, with a wide-row method of sowing of 30 cm with a seed rate of 550–650 thousand germinating seeds on 1 ha. Of the applied in crop rotation, high efficiency of integrated fertilizer system with a single dose of mineral fertilizers (manure 40 + lime 4.5 + 1NPK) is shown.

Sign in / Sign up

Export Citation Format

Share Document