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INDONESIA
Journal of Research and Technology
Published by Universitas NU Sidoarjo
ISSN : 24605972     EISSN : 24776165     DOI : -
Core Subject : Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Industrial & Manufacturing Engineering
Journal of Research and Technology published since 2015 contains a collection of a selected articles from the results of research and study of literature which is relevant to industrial , chemical, and environment engineering. Target readers of the Journal of Research and Technology are scientists, academics, and practitioners from various fields of industry.
Arjuna Subject : -
Articles 454 Documents
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PENURUNAN BOD PADA BIOGAS KOTORAN SAPI CAMPURAN LIMBAH CAIR INDUSTRI PENYAMAKAN KULIT DENGAN VARIASI KECEPATAN DAN LAMA PENGADUKAN Indrawati, Rosiana
Journal of Research and Technology Vol. 3 No. 2 (2017): JRT Volume 3 No 2 Des 2017
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (244.937 KB) | DOI: 10.55732/jrt.v3i2.239

Abstract

The scarcity of energy sources, especially fuel oil (BBM) has become a world problem. The abundant cattle dung in the community has not been optimally utilized. In addition, the Tannery Industry (IPK) has not been optimally utilized. The aim of this research was to know the effect of speed and stirring duration to biogas volume and final BOD concentration on cow manure biogas mixed with tannery industry wastewater (IPK). The experiment used biodigester reactor as much as five pieces, one unit as a controller without stirring and four other unit as the test digester with stirring. IPK 0 as a control digester without stirring. Variation of stirring speed were 5 and 10 rpm, and stirring time were 10 and 15 minutes. The volume of biogas was measured for 20 days. BOD level was measured on the last day of fermentation process. The experiment results showed that the highest biogas volume was found on PK10L10 test digester that was mixture of cow manure and tannery industry wastewater (IPK) with variation of 10 rpm and duration of stirring 10 minutes ie 0.904 m3, and the lowest biogas volume was 0,158 m3 in IPK0 digester. The highest decreasing in BOD content was 20% in PK10L15 digester and the lowest decreasing IPK0 digester was 4%. The stirring process had a significant effect on biogas production and decreased BOD concentration in the digester. Keywords: BOD, Tannery Industry Wastewater, Biogas, Cow Manure.
The Kinetics Reaction of Phosphoric Acid Formation from Cow Bone Pujiastuti, Caecilia; Yustina Ngatilah; Muhammad Septianto; Angelia Tantyono
Journal of Research and Technology Vol. 6 No. 2 (2020): JRT Volume 6 No 2 Des 2020
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v6i2.234

Abstract

Phosphoric acid can be formed from bone waste, including cow bone which contains calcium phosphate. When reacted with sulfuric acid it becomes phosphoric acid. The purpose of this research was to determine the reaction constant of phosphoric acid from cow bones. The reaction constant can determine the good operating conditions in a reactor design. Starting with the cow bones that have been powdered with a size of 200 mesh, dissolved in the water until saturated. Then saturated solution 500 ml was taken and reacted with 4 N sulfuric acid 100 ml, stirring process was carried out at 200 rpm, with variable temperature were (70oC, 80oC, 90oC, 100oC, and 110oC) and time were (40, 50, 60, 70, and 80 minutes). Next, the sample was filtered, and the sediment was taken, and analysed of phosphoric acid filter and separated the sediment. Based on this research, an equation k = 1.1627 e -3742.4 / T was generated. The graph in picture 5 shows that the equation followed a pseudo first order reaction.
UJI ANTIBAKTERI EKSTRAK JAHE MERAH Zingiber officinale var. Rubrum TERHADAP Staphylococcus aureus DAN Escherichia coli Handrianto, Prasetyo
Journal of Research and Technology Vol. 2 No. 1 (2016): JRT Volume 2 No 1 Jun 2016
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v2i1.259

Abstract

The study of inhibition testing antibacterial extract Fresh Red Ginger Zingiber officinale var. Rubrum Against Staphylococcus aureus, and Escherichia coliguna to determine the source of antibacterial natural products, especially red ginger has been conducted. Anti-bacterial inhibition test using disc diffusion method with fresh red ginger rhizome material. The study was conducted using concentrations: 0%, 20%, 40%, 60%, 80%, and 100%. Concentration of 0% was used as a negative control. The data obtained will be tested statistically using ANOVA with sig. 0.05. The results showed that the extraction of fresh red ginger (Zingiber officinale var. Rubrum) at a concentration of 100% has the highest inhibitory region to S. aureus (15.83 mm)and E. coli (14:22 mm). It can be concluded that the extract of fresh red ginger Zingiber officinale var. Rubrum at a concentration of 100% has a moderate level of inhibition to S. aureus and weak level of inhibition to E. coli. Keywords: Escherichia coli, Fresh red ginger extract of Zingiber officinale var. Rubrum, Staphylococcus aureus.
REKOMENDASI PENINGKATAN PEMANFAATAN LAYANAN PERSALINAN NORMAL DI KLINIK PRATAMA RAWAT INAP RUMAH BERSALIN GRATIS RUMAH ZAKAT Disrinama, Am Maisarah
Journal of Research and Technology Vol. 2 No. 1 (2016): JRT Volume 2 No 1 Jun 2016
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v2i1.260

Abstract

Intention of buying product or service is very important thing on purchasing stage. It depends on alternatives evaluation process on pre purchasing stage. K4 Pregnant woman has to decide the place to birth. The objective of this study is to create recommendation to increase Normal Labour on K4 Pregnant Women using Brand Image Analysis dan Three Stage Model of Service Consumption in Klinik Pratama Rawat Inap Rumah Bersalin Gratis Rumah Zakat. This research uses observasional analytic and prospective cohort. The primary data is collected two times, before and after delivery process. There are 54 respondents, whether all of K4 pregnant women with pregnancy age are more than 32 weeks. The samples were taken from March to August 2014. The result shows that some characteristics have relationship with purchasing decision. The recommendations consist of product, place, promotion, people, process, and physical evidence. Overall, the head of branch needs to fix the service for mother and child evaluation soon. Keywords: Brand image, Clinic, Normal birth, Three stage model of service consumption, Utilization of service.
STUDI EKSPERIMENTAL FALLING FILM EVAPORATOR PADA EVAPORASI NIRA KENTAL Fitri, Medya Ayunda; Suhadi; Altway, Ali; Susianto
Journal of Research and Technology Vol. 2 No. 1 (2016): JRT Volume 2 No 1 Jun 2016
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v2i1.261

Abstract

Falling film evaporator is a constructed equipment for concentrating dilute solution that are sensitive to heat flowing form a thin film. This research aims to study the evaporation of cane juice concentrated with air flow on falling film evaporator and knowing evaporation rate occured in falling film evaporator used. In the process, cane juice from plant pumped to the falling film evaporator that used in this experiment. This research used concentrated cane juice and air flow rate for variables of this experiment. Cane juice flow from top of evaporator through distributor to form thin film and air flow from the bottom of evaporator. After that, temperatur of pipe wall, inlet and outlet temperature of cane juice and air were measured. This experiment concluded that the highest concentration of outlet solution is 59 brix for liquid flow rate 154 l/h and air flow rate 10 m3/h, and the other hand inlet solution concentration 51 brix. Optimum evaporation rate is 35 kg/m2.h for 51 brix and air flow rate 10 m3/h. Keywords: Concentrated cane juice, Evaporator, Evaporation rate, Falling film.
VEHICLE ROUTING PROBLEM DENGAN APLIKASI METODE NEAREST NEIGHBOR Prasetyo, Waluyo; Tamyiz, Muchammad
Journal of Research and Technology Vol. 3 No. 2 (2017): JRT Volume 3 No 2 Des 2017
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v3i2.263

Abstract

Transportation problem is just like inventory, this is an activity in logistics area. This activity is possible to make some production in one place and to consume them in another place. The aim of this research were to evaluate the existing network distribution model performance and to provide sugestions to proper the networkdistribution model used. The applied metode to achieve the goal was Nearest Neighbor Algorithm. The results were: (a) Distance saving was 538,2 Km or 26,59%, (b)Distribution time of product could be reduced to 9,37 hours or 19,07%, (c) Fuel cost could be reduced to 403.650 rupiahs or 26,59%, (d) Driver and assistance cost could be saved to 272.850 rupiahs or 4,5%, and (f) Total of distribution cost could be saved to 676.500 rupiahs or 25,71%. Keywords: Logistics, Distribution, Nearest Neighborhod, Distance, Cost.
VEHICLE ROUTING PROBLEM ON JUICE DISTRIBUTION USING NEAREST NEIGHBOR METHOD Tamyiz, Muchammad; Waluyo Prasetyo
Journal of Research and Technology Vol. 4 No. 1 (2018): JRT Volume 4 No 1 Jun 2018
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v4i1.265

Abstract

Product distribution problem becomes an important topic in a company transportation system. PT Amanah Prima Indonesia (API), a company that focuses on national-scalejuice production. With the sum of scattered consumers in Semarang, it is necessary a solution in the products distribution to obtain operational efficiency.The method used is Nearest Neighborh Algorithm. The results obtained are: (a) The total distance traveled by the truck results in a distance savings of 144.20 Km or 40.06%, (b) The time of product distribution can be reduced for 5.15 hours or by 30.31%, (c) The savings of fuel cost resulted Rp.108,150,- or 40.06%, (, d) There is no difference cost for the driver and partner, which is Rp.600,000, and (e) Total savings for product distribution cost obtained of Rp.108,150, - or 12.43%. Keywords: Cost, VRP, Transportation.
OPTIMASI KUALITAS BRIKET BIOMASSA PADI DAN TONGKOL JAGUNG DENGAN VARIASI CAMPURAN SEBAGAI BAHAN BAKAR ALTERNATIF Hamidah, Laily Noer; Rahmayanti, Ardhana
Journal of Research and Technology Vol. 3 No. 2 (2017): JRT Volume 3 No 2 Des 2017
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v3i2.274

Abstract

The energy crisis demands the development of an alternative energy that can meet daily needs. The existence of rice straw biomass waste and corn cob are potential to be utilized as bioenergy in the briquettes form. This research was conducted to develop and to test the characteristics of biomass briquettes as alternative fuels. Biomass used in this research is rice straw and corn cob. The making of briquettes is done through carbonation and compaction with 10% starch adhesive. To know the best quality of briquettes, a mixture of rice straw (100%) was used, mixed rice straw:corn cobs (25%:75%, 50%:50%, and 75%:25%), and corn cob (100 %). Test parameters used were ash content, volatile matter content, and calorific value. The results showed that briquettes from corn cobs were the best briquettes from ash content and volatile matter content of 9.52% and 9.7% respectively. While based on calorific value, briquettes with highest heating value was rice straw briquettes which was equal to 3562 Kcal/kg. Keywords: Biomass Briquette, Rice Straw, Corn cob, Ash Content, Volatile Matter, Calorific Value, Bioenergy.
PENGARUH JENIS BAHAN ATAP PADA PROSES DESALINASI EVAPORASI AIR LAUT Novitrie, Nora Amelia; Afiuddin, Ahmad Erlan; Hardiansyah, Rizal
Journal of Research and Technology Vol. 3 No. 2 (2017): JRT Volume 3 No 2 Des 2017
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v3i2.275

Abstract

Treatment technology of sea water into freshwater is known as desalination. An effective and economical desalination technique is desalination with evaporation. Thisstudy aims to determine the effect of roofing materials on the amount of freshwater produced. The study was conducted using a miniature evaporative tub that had a rooflike shape. Evaporative tubs dimension was 1m x 1m x 0.02m of laminated wood material. 20 liters of brackish water was pumped into the tub. Water in the tub was then closed using a roof designed like a roof made of fiberglass and polycarbonate. Brackish water was left in contact with the sunlight for 24 hours. As a result of heat transfer from sunlight to evaporation tub, brackish water experienced evaporation. The steam moved upward and was captured by the roof wall then condensated resulting in fresh water. The conclusion obtained was a miniature roof of evaporative desalination using fiberglass material obtained 427 ml of fresh water while using polycarbonate material obtained 136 ml fresh water. Keywords: Roof, Desalination, Evaporation.
PERBANDINGAN METODE KONVENSIONAL EKSTRAKSI PEKTIN DARI KULIT BUAH PISANG DENGAN METODE ULTRASONIK Adhiksana, Arief
Journal of Research and Technology Vol. 3 No. 2 (2017): JRT Volume 3 No 2 Des 2017
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v3i2.276

Abstract

The Banana is the most widely produced fruit in Indonesia with waste of banana peel about 1/3 of the fruit. If the banana peel is not utilized in large quantities it will cause environmental problems and is a waste of resources because the waste can still be utilized. The Banana peel contains a variety of compounds such as pectin 10-21%. Based on its content, banana peels have potential as a source of pectin. Pectin can be utilized in various industries of making jelly, jam, gelling, thickener, stabilizer and emulsifier. The purpose of this study was to find the influence of ultrasonic and mass on pectin yield. This research was conducted by using ultrasonic method extraction using 0.05 N HCl solvent of 400 mL and extraction temperature of 60oC. variation of mass in this research are 5, 10, 20, 30 and 40 grams. The highest yield obtained in ultrasonic method is 20.0008 gram with yield of 25,59%. The conventional method only can reach 18,3%. Keywords: Conventional, Banana peel skin, Ultrasound, Yield of pectin.

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