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EKSTRAKSI FOSFOR DARI LIMBAH BUAH JENGKOL DAN PETAI UNTUK PEMBUATAN PUPUK ORGANIK CAIR

JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : JURNAL TEKNOLOGI KIMIA DAN INDUSTRI

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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.

OPTIMASI PROSES EKSTRAKSI KITIN MENJADI KITOSAN DARI LIMBAH KULIT ULAT HONGKONG ( TENEBRIO MOLITOR )

JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : JURNAL TEKNOLOGI KIMIA DAN INDUSTRI

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Abstract

Chitosan has a lot of benefits such as antifungal, antibacterial, coatings, absorbing water and fat.Most of research to process chitosan use a waste from crustaceans such as shrimp, small crab skins, leather and other crabs. But in reality, there are many other types of arthopoda that contain chitin, for example is the class of Insecta as Tenebrio Molitor (meal worm). Meal worm contain the chitin in the skin. Meal worm  change of skin as much as 15 times before it finally turns into a cocoon. it is the waste in meal worm cultivation and still have rich in chitin. To extract the chitin into chitosan consists of three stages namely deprotenisasi, demineralization and deacetylation. Product of in this research is if with increase of consentration NaOH and increase of operation temperature so protein contain will be decrease, mineral contain so much the decrease, and deacetylation of degree be increase. Optimum condition of deproteinisation process at 3% w/v concentration of NaOH and temperature at 90 oC with protein contain 4,25%. Optimum condition of demineralization process at 2,5 N concentration of HCl with Ca contain 0,76% and Mg contain 2,44 mg/100gr. Optimum condition of deacetylation process at 5% w/v concentration of NaOH and temperature at 100oC with deacetylation of degree is 61,2% and product of rendemen is 33,1%.

PENGARUH WAKTU FERMENTASI DAN EFEKTIVITAS ADSORBEN DALAM PEMBUATAN BIOETANOL FUEL GRADE DARI LIMBAH POD KAKAO (THEOBROMA CACAO)

JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : JURNAL TEKNOLOGI KIMIA DAN INDUSTRI

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Abstract

The scarcity of fuel oil globally will need to use biofuels as a alternative fuel. One of it is bioethanol. Bioethanol is ethanol produced from sugar fermentation. Generally bioethanol made from crops like sugar cane and sweet sorghum. Though the plant has a use value as food. This can cause food prices creeping up highly interest in plants and biofuel producers to process the material into bioethanol. Cocoa plantation commodities whose role is quite important to the national economy. Components of the cocoa pod waste is the largest cocoa pod which is 75%. The cocoa pod has a coarse fiber which consists of 27,8278 % lignin, 22,852 % cellulose,and 11,9482 % hemicellulose. The content of cellulose and hemicellulose in the cocoa pod can be further processed into bioethanol by hydrolysis, fermentation, distillation and adsorption (purification). Method for the purification of bioethanol used adsoption, to separate water from ethanol compound. The study was conducted using experimental methods and performed in the laboratory of chemical engineering, University of Diponegoro. Phases of the study are preparation materials, hydrolysis, fermentation, distillation, adsorption, and analysis of results. Variables change at the time of fermentation experiments (144: 168: 192: 216) hours, but its kind of adsorbent during the distillation of molecular sieve 3A, silica gel and a mixture of molecular sieve 3A and silica gel. Variables fixed at the stage of hydrolysis is 100 grams of cocoa pod powder, 2N H2SO4, 1 liter distilled water, 4 hours of hydrolysis time, hydrolysis temperature 100OC. Variables fermentation stage are 0.23% w S. cerevisiae, 18% glucose, 0.5% w Urea, 0.06% w NPK, pH 5. At this stage of the distillation temperature of 85 °C, the volume of 60 ml, 1.5-hour distillation time and at this stage of dehydration is 90gram weight of adsorbent, temperature 78OC. Responses were observed levels of ethanol that is produced on fermentation time and the ability of  molecular sieve 3A or silica gel in ethanol purification. The result showed that the fermentation of the cocoa pod is the best at 168 hours. Molecular sieve 3A is a better adsorbent than silica gel or molecular sieve 3A + mixture of silica gel. Fuel grade ethanol is obtained by the adsorption of the ethanol content of 95.87% to 99.16% using molecular sieve 3A.

SINTESIS SELULOSA DIASETAT DARI ECENG GONDOK (Eichhornia crassipes) DAN POTENSINYA UNTUK PEMBUATAN MEMBRAN

JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 3, Tahun 2013
Publisher : JURNAL TEKNOLOGI KIMIA DAN INDUSTRI

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Abstract

Water hyacinth population that continues to grow every day becomes a problem that must be solve immediately. One of the prospective utilization is synthesis cellulose diacetate based on  cellulose which containing in water hyacinth. The purpose of this research are to determine the potential of water hyacinth in the manufacture of membranes and determine the effect of polymer concentration and evaporation time on membrane performance. In this research, there were two series of experiments, synthesis of cellulose diacetate from water hyacinth and manufacture of membranes. Synthesis cellulose diacetate was done by two steps, cellulose insulation and cellulose acetylation. While, manufacture of membranes was done by phase inversion method, where the parameters that will be examined is the optimization point of polymer concentration 13, 14 and 15% weight as well as  evaporation time 0, 5, 10 and 15 seconds. Cellulose diacetate used as polymer, with acetone as solvent and polyethylene glycol (PEG) as additives. Characterization of membrane was done by measuring flux and rejection to separate humic acid water, and analysis using FTIR and SEM. The results showed that water hyacinth can be utilized as cellulose diacetate and has potential to be used as membranes. In addition, it can be concluded that the concentration of polymer and evaporation time have an affect to the performance of the membrane where the greater concentration of the polymer and the longer of the evaporation time caused the morphological structure of the membrane will be more dense and pores become smaller, so flux getting smaller while the rejection getting larger. Membrane with 15 %wt polymer concentration and 10 seconds evaporation time produces the best performance with flux 460,54 L/m2.hour and rejection 64,28%.

The Principal’s Leadership in Developing the Religious Values in SMA Negeri 1 Jatiroto

MANAZHIM Vol 1 No 1 (2019): FEBRUARI
Publisher : Manajemen Pendidikan Islam STIT Palapa Nusantara

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Abstract

The values of religion in SMANJA recently is described as a school community which hasn’t applied the values of religious (optimally/maximally) in daily life. The school life has not given the life based on the religious values taught by islam. The headmaster is trying to motivate all the school citizen to create/ develop the religious values and try to implement the values at school maximally. In daily life, most of school citizen do implement the religious values at school, for example: a) The activity of praying dzuhur and ashar, b) The activity of prayer Dhuha  are not maximally implemented. The goal of this research is to reveal the principal’s leadership of developing the religious values in SMANJA. 1. Describing the religious values which are implemented in school community. 2. Describing the role and the effort of the principal in developing the religious values. 3. Describing the response of school citien in the offense of developing the religious values. This research applies the qualitative research approach. The sources of the research are the school principal, the vice principal, the teachers, the TU staff, OSIS committee and Remush, while the data collecting methodology is done by observation, and documentation. The results of the research are analyzed by data reduction, data display and data verification. The result of the research on the leadership in developing the religious values principal in SMAN Jatiroto including: 1. A calling for praying dhuhurwhichis done by the OSIS committee’s member in turn. 2. Holding the Dhuhur/Ashar praying. 3. Celebrating the Islamic Religion Day. 4. Holding the examination DO’A together with students of XII grade and their parents face the national and school

EVALUASI PROGRAM PELATIHAN: STUDI KASUS BAGIAN MESIN LOGAM DI BLK SLEMAN TAHUN 2017

TAMAN VOKASI Vol 5, No 2 (2017)
Publisher : TAMAN VOKASI

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Abstract

This research aims to get an overview of: metal machine training curriculum; metal machine trainee qualification; the qualifications of trainers (educator) metal machine; metal machine skills practice facilities; the process of metal machine skills training; and competences achieved by the trainee machine metal. The methods used to collect data in this study are: (1) an interview with head of BLK metal machines and instructors to get the data of the curriculum, metal machine practice worksheets, learning methods, evaluation tools; (2) the observation data to get the process of education and training; (3) documentation to get the data infrastructure workshop machinery metal. To keep the validity of qualitative data in this study, performed the triangulation techniques. Input in training consists of instructors; participants of the training; training materials; training tools in the form of the machine with his supporters, machinery and equipment, the infrastructure of the training and Training curriculum-oriented metal machine KKNI. The process of metal machine includes two training activities. Proponents of the theory of practice activities carried out in the room of the theory and practice of the activities carried out in the workshop. Evaluation of products in the study found that the competence achieved are: 50% of the participants achieved 8 competencies; 25% of the participants achieved the 7 competencies; 18.75% of participants achieving 6 competencies; and 6.25% of the participants achieved competency 5 of 8 competencies to be achieved by the participants of the training at the end of training.

Aktivitas Amilase dan Laju Metabolisme Ikan Lele Dumbo (Clarias gariepinus) pada Kondisi Puasa dan Pemberian Pakan Kembali

Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 30, No 1 (2013)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

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Abstract

The study to determine amylase activity and metabolic rate of catfish, Clarias gariepinus under starvation and refeeding conditions has been conducted with three treatments and four replications in randomized completely design. The result showed that the amylase activity was significant different (P<.05) only at second week after treatment  and metabolic rate was significant different (P<.050 at first and second week after treatment. Conclutions, the amylase activity and metabolic rate of catfish have been decreased at starvation, especially at second week, but it recovery at refeeding condition.

THE CORRECLATION BETWEEN STUDENTS’ LEARNING MOTIVATION AND PARENTS’ ATTENTION TOWARD THE LEARNING ACHIEVEMENT OF FUEL SYSTEM MAINTENANCE MOTORCYCLE OF TENTH GRADE STUDENTS OF SMK COKROAMINOTO WANADADI

TAMAN VOKASI Vol 2, No 1 (2014)
Publisher : TAMAN VOKASI

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Abstract

The objectives of this study are to descibe (1) the correlation between the students’ motiation  toward the learning achievement of fuel system maintenance motorcycle, (2) the correlation and parents’ attention toward the learning achievement of fuel system maintenance motorcycle, and (3) the correlation between students’ learning motivation and parents’ attention toward the learning achievement of fuel system maintenance motorcycle of tenth grade students of SMK Cokroaminoto Wanadadi. The study reports that (1) there was positive and significance correlation between the students’ motiation toward the learning achievement of fuel system maintenance motorcycle, (2) there was positive and significance correlation between parents’ attention toward the learning achievement of fuel system maintenance motorcycle, and (3) there was positive and significance correlation between students’ learning motivation and parents’ attention toward the learning achievement of fuel system maintenance motorcycle of tenth grade students of SMK Cokroaminoto Wanadadi. It could be interpreted that to improve students’ achievement, it was needed motivation and parents’ attention. The learning motivation was need by the students to support their learning activities because motivation was the main factor in increasing their learning achievement. The parents’ attention was also important to improve the students’ learning achievement because parents or family was the first education place for the students. 

PENERAPAN METODE STAD (STUDENT TEAM ACHIEVEMENT DIVISION) UNTUK MENINGKATKAN HASIL BELAJAR MATA PELAJARAN SISTEM STATER DAN PENGISIAN SISWA KELAS XI TKR SMK PUTRA TAMA BANTUL TAHUN AJARAN 2014/2015

TAMAN VOKASI Vol 3, No 2 (2015)
Publisher : TAMAN VOKASI

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Abstract

Researched was purposes to improve learning outcomes subjects starter and charging system in class XI TKR student of SMK Putra Tama Bantul Academic Year 2014/2015 by using STAD.            The experiment was conducted in SMK Putra Tama Bantul XI Academic Year 2014/2015 as a class by the number of study subjects was 26 students. This study is included classroom action research conducted in three cycles, each cycle carried out in four phases: 1. Planning the action, 2. Implementation of the action, 3. Observations, 4. Reflection. Data collection techniques in this class action research using test instruments in the form of questions about the pre-test and post-test was used to measure the improvement of student learning outcomes while the non-test instrument using observation sheet used to measure students learning activities.            The results showed that the application of the method of STAD (Student Team Achievement Division) can improve student learning outcomes in subjects starter and charging system. This can be seen from the acquisition of the average value obtained by the students in the first cycle of 65.76 with a highest score of 75 the lowest value of 40. In the second cycle the average value obtained by students at 73.84 with a highest score of 85 acquisition lowest score of 60. In the third cycle of acquisition average value of 77.5 a high of 85. The activity of students in the first cycle of 23.07% is included in the low category. Activity of students in the second cycle 37.82% is included in the low category. Activity of students in the third cycle of 57.05% in the high category. Based on the results of action research can be concluded that the use of STAD method can improve learning outcomes and charging system subjects in class XI student of SMK Putra Tama TKR Bantul with success indicators 88.46% of the total students. 

PENERAPAN METODE PEMBELAJARAN INKUIRI SEBAGAI UPAYA MENINGKATKAN MOTIVASI BELAJAR DAN PRESTASI BELAJAR KOMPETENSI ALAT UKUR SISWA KELAS X TEKNIK KENDARAAN RINGAN SMK AL-MUJAHIDIN NW KUMBUNG LOMBOK TIMUR TAHUN PELAJARAN 2016/2017

TAMAN VOKASI Vol 4, No 2 (2016)
Publisher : TAMAN VOKASI

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Abstract

The purpose of this study is to knowing: (1) can the application of inquiry learning methods increases learning motivation of measuring tool; and (2) can the application of inquiry learning methods increases learning achievement of measuring tool of Light Vehicle Engineering of Al-Mujahidin NW Kumbung East Lombok.This study included a Classroom Action Research. Subject of This research is Light Vehicle Engineering in 10th class of SMK Al-Mujahidin NW Kumbung which amounts to 18 students. While the object of this research is motivation of learning and achievement of measuring tool subjects. Data collection technique in this study uses the technique of questionnaires and tests. The Istrumen in this study uses the syllabus, lesson plans, questionnaires, tests and observation sheet. And than the data analysis technique uses descriptive and quantitative analysis to determine the percentage of student achievement.The results of this research showed that: (1) the application of inquiry learning methods on measuring tool subject can increases learning motivation, indicated with an average of Students learning motivation in 1st cycle 61.22, on the 2nd cycle 76.33, and on the 3rd cycle 90.17; And (2) the application of inquiry learning methods can increases student learning achievement on measuring tool subjects. this research showed that an increase in the average value of 49.44 in 1st cycle into 78.88 in the 2nd cycle and into 85.55 on the 3rd cycle before the action.