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Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia

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Published by Universitas Tribhuwana Tunggadewi

ISSN : 25033654 EISSN : 25032682 DOI : -

Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Industrial & Manufacturing Engineering

Focus and Scope of this journal are : Chemical Engineering including : bioenergy processing, environmental engineering, natural resource management, Heat and Mass Transfer, Chemical Reaction, Analytical Chemistry, Biochemistry, Designing tools and chemical processes, Chemical industry process, Computing and modeling (simulation) process, Particle and nano technology, membrane technology, esessential oil technology, and phytopharmaca, etc. Civil Engineering including : technology of construction materials, transportation system, environmental layout, concrete and wood structures, steel construction, bridge and dam construction, management of water resources and Hydrology, earthquake engineering, sanitation systems and urban drainage.

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Articles 182 Documents

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PENATAAN RUANG KAWASAN SUMBER AIR JERUK DAN MARON KABUPATEN MALANG Galih Damar Pandulu
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i1.640

The area of Jeruk and Maron water source has been determined as tourism development area in Area Lay-Out Planning of Malang 2007. This research is aimed to identify the physical characteristics and arrange the spatial development brief of Jeruk and Maron water source. Analysis method is used land capability analysis. Assessment is adapted with physical characteristics which is used the scoring method to appropriate land capability analysis. Assessment factors are viewing zones , topography , vegetation density and soil type . Determination of land value is adapted to land capability value. The research result shows that the area of Jeruk and Maron water source has a varied topography and altitude ranges from 300 to 337.5 meters above sea level, Alluvial soil type , soil effective depth is at a depth of more than 90 cm , and the average rainfall is 1761mm per year with 84.85 rainy days per year. Based on result of land ability analysis be concluded that the area of Jeruk and Maron water source is at high and medium class conservation land. The Brief of spatial planning to spatial distribution in the area of Jeruk and Maron water source is conducted to appropriate with zoning analysis result which it obtained from analysis of land ability as protection and utilization block. Distribution block is a form of attempts to form a synergy and harmonious order of site plan between activities in the area for conservation functions.

EKSPERIMEN DAN MODEL EKSTRAKSI MINYAK ATSIRI DENGAN BAHAN CYMBOPOGON SP. MENGGUNAKAN HIDROSTEAM DISTILLATION Zuhdi Ma'sum; Pramono Sasongko
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 2, No 1 (2017)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v2i1.665

This work has as objective to modeled time extraction and yield of the citronella oil extraction processes from stems by hydrosteam distillation. The process variables evaluated in this study were extraction time, and material weight. The yield is calculated from the relation between mass essential oil obtained and the raw material mass used in the extraction and the quantitative and qualitative analyses of the oils were performed by capillary GC/MS. The experimental condition for the maximum yield, 0.36 %, is the following one: extraction time, 4 h, natural plant. The modeling of these results is proposed from the description of the mass transfer from a single plate particle. Yield curves for all studied conditions were fairly well fitted using one adjustable parameter of the model and the experimental monitoring of oil composition as function of extraction time was realized in laboratory steam distillation apparatus and compared with industrial scale results.

Perencanaan Groundsill di Hilir Bendung Waikomo Kabupaten Lembata - NTT Suhudi ST., MT.; Damianus Dai Tukan
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 3, No 2 (2018): EDISI SEPTEMBER 2018
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v3i2.966

Waikomo weir located in Lembata Regency - East Nusa Tenggara is the only building on the river were built in 1972 and used to raise the water level Waikomo River to flow into the rice field of 1200 Ha. The length of Weir 40 m and height 1.50 m, was made of concrete. The condition of Waikomo weir todays has occurred crush depth 1.0 m downstream of the dam to 75.00 m further downstream and ruined retaining wall along the side of 7.00 m. The purpose of this research was to determine the cause of crush and how dimensions of groundsill building used to overcame the crushing and how stability groundsill planned to roll, shear and bearing capacity. Phase of this research includes observations, measurements in the field and collected secondary data from government instances. After used analysis cause of scour in the downstream weir, rainfall analysis, then continued with the Log Pearson Type III method. Once known discharge plans period return 50 years of 39.999 m3/sec, so did the design of groundsill measure and calculate the stability. The results showed that the cause of crush in the downstream weir is due to the mining Waikomo excavated material C by the local community. Groundsill planned height of 1.00 m, length 30.00 m, width 4.61 m, used energy absorbers pool type III and was located 75.00 m from Waikomo weir. From the calculations were known that groundsill plan safe to roll, moved and soil bearing capacity with a safety factor (SF) 1,5.

OPTIMALISASI KINERJA ALAT PENGHASIL ASAP CAIR DARI BAHAN BAKU LIMBAH PERTANIAN Sinar Abrina Anggraini; Tiya Nurhazisa
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 2 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i2.655

Currently the rottenable food material needs for preservation technology that was safe for people's health. Recently, liquid smoke technology which is used as an alternative material of food preservatives is from any agricultural waste. Liquid smoke beginning to develop by researchers, to get the higher quality in order to become safe for consumption by the public and not contains carcinogenic substance. The purpose of this study was to determine the performance of liquid smoke tools, the quantity and quality of liquid smoke. In this research, the material used was corn cob and coconut shell using the main tool of pyrolysis reactor, with the optimum operating conditions and then analyzed using GC/MS and LC/MS. The result showed that the yield of liquid smoke coconut shell without drying and through drying was 36% and 28.8%, while from the corn cob was 61.2% and 30.4%. Charcoal of coconut shell 33% and 50% while from the corn cob was 16.7% and 33.3%. The number of missing components from coconut shell is 31% and 21.2% while from the corn cob was 22.1% and 36.3%%. Performance of liquid smoke tools from coconut shell is 4.37 g/(hour.m) and 5.59 g/(hour.m) while from corncobs is 7.42 g/(hour.m) and 7.37 g/(hour.m). The phenol quality of the resulting liquid smoke from coconut shell and corncob was 3.04% and 1.38%. Acidity quality was 7.3% and 1.3%. The value of pH was 1.41 and 2.47.

Distribusi Weibull Kecepatan Angin Wilayah Kecamatan Pangarengan Kabupaten Sampang Madura Arin Wildani; Septiana Kurniasari
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 4, No 1 (2019): EDISI MARET 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

ABSTRAK Ketergantungan Indonesia terhadap ketersediaan energi fosil menjadi masalah baru dalam kelangsungan hidup rakyat Indonesia di masa yang akan datang. Energi fosil yang bersifat terbatas dan tidak terbarukan akan habis dalam kurun waktu tertentu. Sehingga diperlukan langkah baru untuk menggunakan energi baru dan terbarukan seperti energi angin. Penelitian ini dilakukan untuk mengetahui potensi pembangunan pembangkit listrik tenaga angin di wilayah Kecamatan Pangarengan Kabupaten Sampang Madura. Penelitian ini dilakukan dengan cara menganalisa kecepatan angin berdasarkan data dari pengukuran anemometer menggunakan distribusi Weibull. Data yang digunakan yaitu data sekunder yang didapatkan dari dari BMKG Kalianget Sumenep. Berdasarkan distribusi weibull didapatkan bahwa parameter k sebesar 2,67dan c sebesar 2,88. Dari nilai k dan c didapatkan bahwa persentase probabilitas energi angin paling banyak pada tahun 2016 yaitu 2,5 m/s sebanyak 45% sedangkan tahun 2017 sebesar 2,6 m/s dengan probabilitas 70%.Kata kunci: energi angin, kecamatan pangarengan, distribusi weibull ABSTRACTIndonesia's dependence on fossil energy availability is a new problem in the survival of the Indonesian people in the future. Fossil energy that is limited and non-renewable will run out in a certain period of time. So that new steps are needed to use new and renewable energy such as wind energy. This research was conducted to determine the potential for the construction of wind power plants in the Pangarengan District, Sampang Madura District. This research was conducted by analyzing wind speed based on data from anemometer measurements using the Weibull distribution. The data used are secondary data obtained from BMKG Kalianget Sumenep. Based on the weibull distribution it was found that the parameters k were 2.67 and c were 2.88. From the values of k and c, it was found that the percentage of probability of wind energy was the most in 2016, which was 2.5 m/s as much as 45% while in 2017 it was 2.6 m / s with a probability of 70%.

Biodiesel dari Minyak Biji Kapuk (Ceiba Pentandra) Menggunakan Katalis Ca/Hydrotalcite Erlinda Ningsih; Yustia Wulandari Mirzayanti; Achmad Chusnun Niam; Pipit Febrianita; Wanvia Vangesti
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 4, No 1 (2019): EDISI MARET 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

The availability of fuel caused by fossil decline, so that required alternative fuel that can fulfill a need consumers.Biodiesel is alternative fuel of seeds having a big to be developed.One of seeds that can be used is seeds kapok.The purpose of this research is to know the influence of ratio molar oil methanol and the addition of a catalyst to yield.Making biodiesel this through four stage that is preparasi a catalyst ca / hydrotalcite, degumming.Esterifikasi and transesterifikasi.Oil the kapok already omitted gum and lowered levels ffa below 1 %, then the oil processed transesterifikasi by the addition of a catalyst already dipreparasi ( 0.5 %, 1 percent and 1.5 % w / w of a mass oil ).Based on the research obtained on ratios molar 1 oil: 20 methanol produce fame highest levels of 5,55 % and yield biodiesel produced is 3,92 %.

Perencanaan Saluran Drainase pada Jalan Donowarih Kecamatan Karangploso Kabupaten Malang Suhudi Suhudi; Harvy Irvani
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 4, No 1 (2019): EDISI MARET 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

The drainage system is needed to prevent the occurrence of puddles, dispose of rainwater that is not absorbed in the soil, and make the surrounding environment unhealthy. Karangploso sub-district is a sub-district which is the center of economic, social and local government activities. However, there are problems of flooding or puddles which are the thoughts and concerns of various parties, this is due to the lack of drainage channels in and around the Karangploso District area. This research was carried out in the Borogragal hamlet of Donowarih Village, Karangploso District, Malang Regency. The research method used is the Rational method, namely Qa = 0.00278. C.I.A, uses hydrology analysis, rainfall data and land use maps. From the results of the data analysis states that the amount of rainfall with a return period of 10 years. 10 year return flood discharge for: Q sal. = 1.0 m3 / second. The existing drainage channel capacity is as big as Q sal. = 0.389 m3 / second. The existing channel dimensions are not enough to pass a 10-year return flood discharge of 1.0 m3 / sec. Drainage plan is as big as: Q sal. = 0.410 m3 / sec. The construction design for drainage lines on the road is b = 0.60 m and h = 0.80 m. In order to prevent inundation, the community is advised not to dispose of garbage on the canal and to carry out routine maintenance by related agencies and the community.ABSTRAKSistem drainase sangat dibutuhkan untuk mencegah terjadinya genangan air, membuang air hujan yang tidak terserap dalam tanah, serta membuat lingkungan sekitar menjadi tidak sehat. Kecamatan Karangploso merupakan Kecamatan yang menjadi pusat perekonomian, sosial, dan aktivitas pemerintah daerah. Namun terdapat permasalahan banjir atau genangan air yang menjadi pemikiran dan perhatian dari berbagai pihak, Ini disebabkan minimnya saluran drainase di dalam maupun sekitar wilayah Kecamatan Karangploso. Penelitian ini dilaksanakan di dusun Borogragal Desa Donowarih, Kecamatan Karangploso Kabupaten Malang. Metode penelitian yang digunakan adalah metode Rasional yakni Qa = 0.00278. C.I.A, menggunakan analisa hidrologi, data curah hujan dan peta tata guna lahan. Dari hasil analisis data menyatakan bahwa jumlah curah hujan dengan kala ulang 10 tahun. Debit banjir kala ulang 10 tahun sebesar: Q sal. = 1,0 m3/detik. Kapasitas saluran drainase yang ada sebesar Q sal. = 0,389 m3/detik. Dimensi saluran yang ada tidak cukup untuk melewatkan debit banjir kala ulang 10 tahun sebesar 1,0 m3/ detik. Rencana saluran drainase sebesar : Q sal. = 0,410 m3/detik. Desain konstruksi untuk saluran drainase di jalan adalah b = 0,60 m dan h = 0,80 m. Untuk menjaga agar tidak terjadi genangan maka dihimbau kepada masyarakat agar tidak membuang sampah pada saluran dan mengadakan pemeliharaan secara rutin oleh Dinas terkait dan juga masyarakat.Kata Kunci: drainase; banjir; curah hujan; analisa hidrologi

Peningkatkan Mutu Minyak Goreng Curah dengan Penambahan Ekstrak Kulit Pisang Raja Sebagai Antioksidan Alami Dian Yanuarita Purwaningsih; Daril Ridho Zuchrilah; Intan Nurmala
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 4, No 1 (2019): EDISI MARET 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

Minyak goreng merupakan salah satu kebutuhan masyarakat yang semakin hari semakin meningkat baik jumlah maupun harga. Untuk mengatasi hal tersebut, masyarakat menggunakan minyak goreng curah. Minyak goreng curah adalah minyak goreng yang memiliki kualitas maupun higienitas di bawah baku mutu SNI 3555-1998, karena tanpa kemasan yang sesuai, minyak goreng akan mudah teroksidasi. Penelitian bertujuan untuk memperbaiki kualitas minyak goreng curah menggunakan ekstrak kulit pisang raja karena kulit pisang raja mengandung antioksidan alami yaitu flavonoid. Untuk memperoleh antioksidan alami tersebut, kulit pisang raja diekstraksi menggunakan metode maserasi dengan pelarut metanol dan etil asetat. Adapun berat ekstrak yang ditambahkan ke dalam minyak goreng curah yaitu 1; 1,5; 2; 2,5 gram dengan lama pengadukan yaitu 20, 40, 60 menit. Sampel kemudian dianalisis nilai bilangan asam, iod, peroksida. Hasil terbaik pada penelitian ini didapatkan pada penambahan ekstrak sebanyak 2,5 gram dan waktu pengadukan 60 menit dengan hasil bilangan asam 0,19827 meq/kg, bilangan iod 1,86817 meq/kg, bilangan perosida 1,94608 meq/kg.Kata kunci: minyak goreng curah; kulit pisang raja; antioksidan alami; bilangan asam; iod; peroksidaABSTRACTCooking oil is one of the society necessity which is day by day increase terms of quantity and prices.To overcome these issues, of people use cooking oil is.Cooking oil is is cooking oil having of quality and higienitas under of quality standard sni 3555-1998, because without packaging appropriate, cooking oil will easily oxidized.Research aimed at improving the quality of cooking oil is use extract the skin of a banana the king because the skin plantain containing antioxidant natural that is flavonoid.To obtain antioxidant the natural, the skin of a banana the king extracted uses the method maceration with a solvent methanol and ethyl acetate.And the weight of the extract added to the cooking oil is such as 1; 1.5; 2; 2.5 grams with long stirring ie 20, 40, 60 minutes.Sample then analyzed point number acid, iod, peroxide.The best result in this study obtained to adding extract as many as 2.5 gram and time stirring 60 minutes with the result even though the number of the the action of dilute acids 0.19827 meq / from thirty to forty pounds , the number of the iod 1.86817 meq / from thirty to forty pounds , the number of the perosida 1.94608 meq kg.

Kajian Ekstraksi Antosianin dari Buah Murbei dengan Metode Sonikasi dan Microwave Anitarakhmi Handaratri; Yuyun Yuniati
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 4, No 1 (2019): EDISI MARET 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

The pigment in mulberry (Morus alba L.), anthocyanin, is a kind of natural pigment for food processing and has functional potential and commercial values. Some investigators have developed a method to obtain high extraction yields in a short time. High yields with Ultrasonic Assisted Extraction method using ultrasonic waves that affect the cell wall and causes the destruction of a thin layer and helps in releasing phenolic compounds that trapped in the cell wall. Microwave Assisted Extraction method uses the energy of microwave radiation to heat the solvent quickly and efficiently. This study concludes and gives an overview advantages of both methods were compared with conventional methods.

Analisa Kelayakan Teknis dan Ekonomi Embung Putukrejo Kabupaten Malang Ikrar Hanggara; Harvi Irvani
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 4, No 1 (2019): EDISI MARET 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

Putukrejo Village, Kalipare Subdistrict, is one of the villages in Malang Regency which in the last 4 years has always experienced drought. The drought that occurred for 4 months in the dry month caused some problems which made the villagers panic enough. Embung is an alternative solution to overcome drought. Embung has the function of storing rainwater to be stored and used during the dry season. To build a reservoir, it is necessary to study the feasibility of both technical and economic feasibility. The results showed that the stability of the reservoir to bolster was 5.7, for stability against shear was 1.21. The B / C value is 1.1 with a benefit value of Rp 97,485,300.00 and a cost value of Rp 143,790,817.00 so that the embung can be said to be economically and technically feasible.Abstrak: Desa Putukrejo Kecamatan Kalipare merupakan salah satu desa di Kabupaten Malang yang pada 4 tahun terakhir selalu mengalami kekeringan. Kekeringan yang terjadi selama 4 bulan pada bulan kemarau menyebabkan beberapa masalah yang cukup membuat warga desa panik. Embung merupakan salah satu alternatif solusi untuk mengatasi kekeringan. Embung mempunyai fungsi menampung air hujan untuk kemudian disimpan dan digunakan pada saat kemarau. Untuk membangun embung perlu dilakukan kajian terhadap kelayakan baik kelayakan secara teknis maupun ekonomi. Hasil penelitian menunjukkan bahwa stabilitas embung terhadap guling sebesar 5.7, untuk stabilitas terhadap geser sebesar 1.21. Nilai B/C sebesar 1,1 dengan nilai manfaat sebesar Rp 97,485,300.00 dan nilai biaya sebesar Rp 143,790,817.00 sehingga embung dapat dikatakan layak secara ekonomi dan teknis.Kata kunci: embung, kelayakan, konservasi, air, kekeringan

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Contact Name
Ayu Chandra

Contact Email
ayu.chandra21@gmail.com

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Journal Mail Official
ayu.chandra21@gmail.com

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Location
Kota malang,

Jawa timur

INDONESIA