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All Journal Bumi Lestari Jurnal Sains dan Teknologi Jurnal Teknik Sipil Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of Engineering and Technological Sciences Jurnal Rekayasa Sipil dan Lingkungan RACIC : Rab Construction Research Al-Ard: Jurnal Teknik Lingkungan Jurnal Penelitian IPTEKS JURNAL TEKNIK Neo Teknika: Jurnal Ilmiah Teknologi Jurnal Teknik Sipil dan Teknologi Konstruksi Jurnal Daur Lingkungan KAIBON ABHINAYA : JURNAL PENGABDIAN MASYARAKAT Journal of Infrastructure and Civil Engineering Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat) Techno SAINSTEK
Lita Darmayanti
Universitas Riau
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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APLIKASI MODEL HIDROLOGI KONSEPTUAL IHACRES UNTUK PENGALIHRAGAMAN HUJAN DEBIT PADA DAERAH ALIRAN SUNGAI Lita Darmayanti, Trimaijon, Imam Suprayogi Yohanna Lilis Handayani
Jurnal Teknik Sipil Vol 12, No 4 (2014)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (296.607 KB) | DOI: 10.24002/jts.v12i4.636

Abstract

Proses transformasi hujan menjadi debit dapat ditiru dan disederhanakan dalam bentuk model yang lazim disebut model hujan debit. Tujuan utama penelitian ini adalah mengaplikasikan model guna mengatasi keterbatasan akan data debit untuk kebutuhan prediksi akan ketersediaan air di suatu Daerah Aliran Sungai (DAS). Metode pendekatan yang digunakan untuk memprediksi kebutuhan ketersediaan air suatu DAS adalah menggunakan model IHACRES yang dikembangkan di Inggris berdasarkan data curah hujan pada stasiun hujan Tanjung Pati, Sijunjung dan Sentajo periode 1995-2004 serta data klimatologi pada stasiun klimatologi Sentajo periode 1995-2004. Hasil utama penelitian membuktikan bahwa Model IHACRES yang diterapkan di stasiun duga air Lubuk Ambacang dapat dikatakan masih kurang handal karena nilai R2 yang dihasilkan pada tahap simulasi berkisar antara 0,245 – 0,485. Namun dalam hal penggunaannya di lapangan masih dapat diaplikasikan selama pemodelan hujan debit yang memberikan hasil yang lebih baik belum ditemukan.
Model Fisik Sub Surface Flow Constructed Wetland Untuk Pengolahan Air Limbah Musala Al-Jazari Fakultas Teknik Universitas Riau Hidayat, Taufiq; Darmayanti, Lita; Sujatmoko, Bambang
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Musala Al-Jazari is located in the Faculty of Engineering, University of Riau. Activity in musala every day produces a wastewater effluent. Wastewater directly discharged and allowed to seep in flooded soil without first processing that can affect groundwater quality. One of the appropriate technology is simple, inexpensive and easy in operation and maintenance system to reduce pollutants in wastewater was constructed wetland. The purpose of this study is to plan physical model of Sub Surface Flow Constructed Wetland (SSF-Wetland) field scale, determine the effectiveness of SSF-wetland in reducing water waste and calculate budget construction costs SSF-Wetland. Research using medium black soil and water jasmine plants (Alisma plantago). Water quality parameters tested were pH, Chemical Oxygen Demand (COD) and Total Suspended Solid (TSS). The results of the study resulted in the highest efficiency value of 78.07% reduction in COD, TSS of 78.72% and an increase in the pH value of 27.59%. From planning SSF-Wetland obtained the total planned budget of Rp. 6,574,527.16. Overall the results showed that the constructed wetland besides being able to improve the quality of waste water can also beautify the area musala.  Keywords: wastewater, constructed wetland, alisma plantago
Removal of Copper (II) Ions in Aqueous Solutions by Sorption onto Fly Ash Darmayanti, Lita; Notodarmodjo, Suprihanto; Damanhuri, Enri
Journal of Engineering and Technological Sciences Vol 49, No 4 (2017)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1787.449 KB) | DOI: 10.5614/j.eng.technol.sci.2017.49.4.9

Abstract

The ability of fly ash to adsorp Cu(II) ions from two different coal combustion systems was studied. Optimum removal was found at pH 5, contact time 30 minutes and 60 minutes for Fly Ash 1 and Fly Ash 2, respectively, and dosage 10 g/l. The difference in adsorption capacity between both fly ashes may be due to their carbon fraction and CaO content. The removal of Cu (II) ions was caused by both adsorption and/or precipitation. Precipitation is enhanced by lowering the carbon fraction and increasing the CaO content. The adsorption isotherm showed that the Langmuir model fitted well to the experimental data of both fly ashes. A thermodynamic study was conducted at three different temperatures: 25 °C, 45 °C, and 60 °C. The adsorption processes were spontaneous and endothermic and were more favorable at higher temperature.
Karakteristik Mortar Geopolimer Abu Sawit Dengan Variasi Modulus Aktivator Halinda Putri, Winda Astuti; Olivia, Monita; Darmayanti, Lita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Geopolymer is an environmentally friendly alternative construction material that is made from activation of source material with rich in silicon (Si) and alumunium (Al) by alkaline activator solution. This research using palm oil ash from Riau Province as based geopolymer mortar. Properties of geopolymer mortar that was studied based variation of modulus activator, dosage activator, curing temperature, type of processing ash, and rest period. Research showed that increasing compressive strength of geopolymer mortar influenced by increasing modulus activator, dosage activator, and curing temperature with optimum condition, as well as combustion of palm oil ash in furnace, and rest period of geopolymer mortar for 3 days.  Keywords: palm oil ash, geopolymer, modulus activator, dosage activator
Identifikasi Alternatif Sumber Air Baku Baru Pdam Tirta Dharma Duri YR, Habrio Ilva; Siswanto, Siswanto; Darmayanti, Lita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Nowadays, the pure water needs of PDAM Tirta dharma Duri is filled by PT CPI. In the dry season, the water supply is decrease cause about 8614 of costumers get lack of water. In content to fulfil the source of pure water so the company did the survey to investigate water resource around Duri to fill water into the company. This study aims to identify the technical proper of pure water from Jurong I, II, III, Petani and Sam-sam river. Quality of water is analyzed by taking the samples from the rivers then they subjected in physic and chemical parametric. Quantity of water is analyzed by Mock method to find the reliable debit with probability 90%.The finding showed that reliable debit of Jurong I, II, III, Petani and Sam-samriver is 0.743 m3/sec, 1.399 m3/sec, 12.824 m3/sec, 0.13m3/sec, and 1.032 m3/sec. water source quality for Jurong I, II, III, Sam- sam river including on class III, and Petani river on class II.  Key words: Mock Method, Quantity, Water Source,
Pengaruh Dosis Biokoagulan Ekstrak Belimbing Wuluh (Averrhoa Bilimbi) Dan Kecepatan Pengadukan Terhadap Penyisihan Zat Organik Dan Warna Pada Air Gambut Febriana, Hertina; Daud, Syarfi; Darmayanti, Lita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Peat water qualitatively still has constraints such as organic matter and high color, but the use of quantitative peat water has the potential to be processed into clean water. The aim of this study was to study the effect of variations in the dosage of starfruit extract and the speed of stirring on the removal of organic substances and the color of peat water by coagulation and flocculation using the starfruit extract of biokoagulant. This research was carried out with variations in the dosage of starfruit extract of 45 mL, 50 mL, 55 mL, 60 mL  and the stirring speed variations of 100 rpm, 125 rpm, 150 rpm respectively. The results showed the highest removal efficiency of organic matter and color occurred at a dose of coagulant 60 mL / L with a stirring speed of 150 rpm each of 82.23% and 47.22%.   Keywords: Peat Water, Dosage, Stirring Speed, Coagulation-Flocculation, Natural Coagulant
Studi Timbulan Dan Komposisi Sampah Domestik Wilayah Pengembangan IV Kota Pekanbaru Aris, Aris; Yenie, Elvi; Darmayanti, Lita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Sampling is carried out based on SNI 19-3964-1994. The results showed that the number of solid waste generated in units of weight in the District of Tenayan Raya was 0,431 kg/person/day and in the unit volume was 3,376 l/person/day. Waste generation in Bukit Raya Sub-district is in weight units of 0.483 kg /person/ day and in volume units of 3,376 l/person/day. The composition of domestic waste in Development Region IV is dominated by 54.5% food waste, 11.2% foliage, 6.9% plastic, 5.5% paper, 5.7% textile, 4.2% rubber, 3.4% glass and 3.3% metal.  Keywords: waste generation, composition of waste
Karakterisasi Dan Analisis Pengolahan Greywater Menggunakan Karbon Aktif Saputra, Muhammad Ramadhan; Andrio, David; Darmayanti, Lita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The growth of population will increase clean water demand. One of several way that can be done is by treating wastewater and reuse it as an alternative source. This research aims to determine the characteristics of greywater and analyze the removal chemical oxygen demand (COD), oil and grease using activated carbon. The result of this study show the COD, oil and grease in 397 mg/L and 152 mg/L. Keywords: Activated Carbon, Greywater
Karakterisasi Dan Potensi Pengolahan Ampas Sagu Menjadi Briket Cahyani, Anugrah; Andrio, David; Darmayanti, Lita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Sago pulp is a waste from the sago starch industry. Sago pulp has not been used optimally and a small portion is used as animal feed, the rest is dumped into reservoirs or around rivers where sago is processed which can pollute the environment. Sago pulp can be used as solid fuel in the form of briquettes. This study aims to investigate the characteristics of sago pulp and analyze the potential for processing sago pulp into briquettes. The result showed the calorific value of sago pulp was 3383,51 cal/g. This result indicates that sago pulp can be used as a raw material for briquettes. Keywords: sago pulp, briquettes
Karakterisasi Dan Potensi Pengolahan Air Gambut Menggunakan Biosorben Mahardika, Dewa Ayu Divia Pradhaswari; Andrio, David; Darmayanti, Lita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Peat water is surface water with striking characteristics because it has a high content of color and organic subtances, so it needs further processing so that it can be used as clean water. Adsorption using biosorbent is one method that has the potential to remove color and organic matter substances in peat water. This research aims to determine the characteristics of peat water and analyze the removal of colors and organic substances using biosorbent. The results of this study show the colors and organic substances in 1715 Pt/Co and 616,2 mg/l. Keywords: biosorbent, color, organic substances, peat water
Co-Authors Alex Kurniawandy Amalia Masturah Annisa Arifandita Mifshella Arhamny Arhamny Ari Sandhyavitri Aris Aris Aryo Sasmita, Aryo Bambang Sujatmoko Benny urzikri Rahim Cahyani, Anugrah Damanhuri, Enri Damayanti, Elok David Andrio David Andrio, David Dewi Fitria Dewi Fitria DEWI FITRIA, DEWI Dian Kharisma Dewi Dian Paramita Dwiegi Safitri Febriani Dwiegi Safitri Febriani Edward HS Edward HS Edward Hs Edward Sitio Edy Saputra Elvi Yenie, Elvi Enri Damanhuri Enri Damanhuri Enri Damanhuri Ermiyati Ermiyati Eryan Chintya Debby Esther RA Fadli Dirga Subardi Febriana, Hertina Febriansyah, M. Ferdy Ashari Syawal Fika Rahma Yuni Fika Rahma Yuni Fikri Julian Grethy Asmara Sitorus Gunadi Priyambada Habrio Ilva YR Hamdani Hamdani Husni, Afdaul Imelda Dewi Agusti Iqbal Perdana Putra Jaya Alexander Pandiangan Jecky Asmura Kartika Pratama Syafitri Lidya Astuti Lisa Asmiyarna Lisa Asmiyarna M. Khairul Annam M. Ridwansyah Mahardika, Dewa Ayu Divia Pradhaswari Manyuk Fauzi Marta Yudha Ozman May Kristina Maya Septiani Wijaya Monita Olivia Muhamad Yusa Muhamad Yusa Muhammad Hasbu Nazar Muhardi Muhardi Mutia Putri Mutia Putri Nadia Yulia Lestari Nadya Dwi Permatasari Vionola Norima Sabrina Notodarmodjo, Suprihanto Okdika Berliandra Olivia, Arinda Oni Loretha Putri, Dini Riskiana Regina Deva Aulia Reynaldi Saputra Rezeki, Muhammad Dio Rilian Gerry Sitompul Ririn Yuari Farandia Roma Dearni Ryan Renaldi S Siswanto Saputra, Muhammad Ramadhan Sarah Dwi Arini Shinta Elistya Shinta Elystia Sigit Sutikno Siswanto Siswanto Soewignjo Agus Nugroho Sri Febria Suprihanto Notodarmodjo Suprihanto Notodarmodjo Syarfi Daud Tania Octalina Tamamy Taufiq Hidayat Ucok H Pulungan Usman, Ratika Winda Astuti Halinda Putri Wulandari Wulandari Yasmin Nabila Dharma Yogi Guntara Yohanna Lilis H Yohanna Lilis Handayani Yohanna Lilis Handayani Yohanna Lilis Handayani