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All Journal Jurnal Ilmu Lingkungan Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Kendali Teknik dan Sains Journal of Engineering Science and Technology Management Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Venus: Jurnal Publikasi Rumpun Ilmu Teknik BioHealth
Revi Lasmita
Institut Kesehatan Dan Teknologi Al Insyirah
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

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Pre Treatment Air Gambut Dengan Lempung Cengar Dan Penyisihan Zat Organik Dan Kekeruhan Dengan Membran Ultrafiltrasi Sistem Aliran Cross-Flow Lasmita, Revi; Daud, Syarfi; Asmura, Jecky
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Water is an environment element that is needed to support all human life. Peat water is containing a Natural Organic matter (NOM) that make it brown, taste and smelling. Peat water quality not suitable with water quality standards Permenkes No. 416/MENKES/PER/IX/1990. One of the peat water treatment methods used in this study is pre treatment of coagulation-flocculation and ultrafiltration membrane. This study aims to determine the removal efficiency of organic matter and turbidity in the pre treatment of coagulation-flocculation using coagulants Cengar Clay, coagulants Cengar Clay to decrease organic matter and turbidity, determine the performance of membrane for flux and rejection of organic matter and turbidity with and without pre treatment of coagulation-flocculation, determine decrease of organic matter and turbidity in peat water treatment using ultrafiltration membrane with pre treatment of coagulation-flocculation. The highest removal efficiency in coagulation-flocculation for organic matter parameter and turbidity obtained at a dose of 100 ml with a variation efficiency value of 47,733% dan 70,484%. The highest flux ultrafiltration membrane with and without pre treatment of coagulation-flocculation obtained at a pressure of 1,5 bar. Rejection coefficient organic matter and high turbidity ultrafiltration membrane without pre treatment is obtained at a pressure of 0,5 bar respectively by 20,6% dan 96,9%. Rejection coefficient organic matter and high turbidity ultrafiltration membrane with pre treatment is obtained at a pressure of 0,5 bar respectively by 92% dan 100%. Decrease in organic matter and turbidity with the pre treatment of coagulation-floccultion and ultrafiltration membrane from 118,5 mg/l KMnO4 to 9,640 mg/l KMnO4 and 31 NTU to 0 NTU.Keywords: Cengar Clay, Coagulation-Flocculation, Peat Water, Ultrafiltration Membrane.
ANALISIS PENGELOLAAN AIR PROGRAM PAMSIMAS SEBAGAI SUMBER AIR BERSIH DI KECAMATAN KUANTAN MUDIK KABUPATEN KUANTAN SINGINGI Revi Lasmita; Aras Mulyadi; Manyuk Fauzi
Jurnal Ilmu Lingkungan Vol 14, No 1 (2020): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.14.1.p.66-79

Abstract

Clean water according to Permenkes RI No 416 / Menkes / Per / IX / 1990 is water that used for daily needs whose quality meets health requirements and can be drunk after cooking, one of the government's efforts to meet the clean water needs of the community is the Pamsimas Program. The Pamsimas Program is one of the programs and concrete actions of the government (central and regional) with the support of the World Bank to improve and meet the needs of drinking water supply, sanitation to improve the level of public health, especially in reducing the number of diarrheal diseases and other diseases that are transmitted through water and the environment. Muaro Tombang Village, Sungai Manau Village and Bukit Kauman Village are the three villages in Kuantan Mudik Sub-District that have not had access to 100% clean water. Indicators of success and sustainability of the Pamsimas Program are the quantity and quality of water sources, management policies and management strategies for the Pamsimas Program. The quantity of water in the three villages in terms of discharge and minimum reservoir capacity meet the needs of the community, the water quality in the three villages there are several parameters that do not meet the quality standards of the Minister of Health Regulation No. 416 of 1990 concerning Clean Water Quality Requirements, so it needs to be treated for water Pamsimas Program. The community's perception of the socio-economic and management policies of the Pamsimas Program Muaro Tombang Village and Sungai Manau Village is included in the agreed category, while the community's perception of the socio-economic and management policy of the Pamsimas Program in the Bukit Kauman Village is in the neutral category. The right strategy used for the management of the Pamsimas Program in the three villages is the aggressive strategy (Growth Oriented Strategy), namely the development of the Pamsimas Program by utilizing the strengths of the opportunities that have been identified.
Earned Value Analysis Terhadap Waktu dan Biaya Pada Proyek Pembangunan Gedung Pasar Padang Panjang Revi Lasmita; Mela Ardeline
Jurnal Kendali Teknik dan Sains Vol. 2 No. 3 (2024): Juli : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v2i3.3901

Abstract

Along with the population and economic growth of West Sumatra, especially in Padang Panjang City, West Padang Panjang District, the need for public facilities is urgently needed, one of which is the Padang Panjang market. In a project, planning and controlling costs and time is part of overall project management, especially at the implementation stage of the case study reviewed by researchers, namely the Padang Panjang market building construction project. In this research regarding time and cost control, the earned value method is one method that can monitor project performance in terms of time and cost. Which aims to determine project performance in terms of time and costs each week and predict the time and costs to complete the remaining work. So that we can get corrective actions to be taken next to progress the project. In this research, to obtain a basic basis for writing, secondary data collection is used as supporting data for the analysis of the results themselves. The analysis and discussion carried out were calculating the BCWS value, BCWP value and ACWP value in order to obtain the time variance value (SV), cost variance value (CV), calculating the productivity index, calculating project performance and calculating the estimated analysis of total project costs and completion time. The results of the research carried out are, the overall BCWS value of the Padang Panjang market project is IDR 96,213,315,046.3, for the BCWP value at the end of the 22nd week of review IDR 12,688,575,967, the ACWP value at the end of the 22nd week of review is IDR. 12,389,476,444.2 . As for the analysis results obtained from several existing indicators, the SPI value was 1.384 > 1, while the CPI was 1.003 > 1, which means that the project was accelerated in terms of schedule but incurred actual costs that were smaller than the work that had been carried out. The ETC value is IDR 84,134,151,328.9 and the EAC value is IDR 96,523,627,773.1, while the ECD value is 373 days for the project completion time.
Analysis of Environmental Traffic Flow Characteristics on Jalan Kaharuddin Nasution – Marpoyan, Pekanbaru City Lasmita, Revi; Putri Permata MS, Ayu; Gusnanda
Journal of Engineering Science and Technology Management (JES-TM) Vol. 3 No. 2 (2023): September 2023
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v3i2.129

Abstract

Jalan Kaharuddin Nasution, a major educational area in Pekanbaru, hosts numerous schools and universities along with various amenities such as hotels, restaurants, cafes, shops, and street vendors. This study focuses on three key traffic components: Speed, Volume, and Density, aiming to analyze service levels on Kaharuddin Nasution Street. The research investigates the relationship between traffic flow components (Volume, Speed, and Density) using the Greenshield and Greenberg Models. Findings reveal that the Greenshield Model best portrays congestion density (Dj), ranging from 103.17 to 126.41 vehicles/km, compared to Greenberg's much higher Dj values (642.89 – 3990.35 vehicles/km). Greenshield also identifies maximum volume/capacity (1801.74 – 2562.53 vehicles/hour), while Greenberg shows higher capacity (3477.38 – 12826.50 vehicles/hour), inconsistent with the road's actual capacity. Service levels on Kaharuddin Nasution Street throughout the week are categorized as E, indicating service levels beyond speed measurement due to consistently lower speeds than level D. Unstable traffic results from near-capacity volumes, causing congestion and occasional standstill. Effective traffic management considering volume, speed, and density is essential to anticipate future congestion issues on Kaharuddin Nasution Street.
Usulan Peningkatan Kinerja Masinis Dan Asisten Masinis Kereta Api Berdasarkan Metode Fatique Index Dan PSQI Mela Ardeline; Revi Lasmita
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 2 No. 3 (2024): Juni : Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v2i3.300

Abstract

In Indonesia, almost every year train accidents occur which result in casualties and considerable material losses. The factors that cause train accidents are human resources, facilities, infrastructure and environmental factors. The method used in this study is the measurement of the level of fatigue that occurs in machinists and assistant machinists using the fatigue index calculator and for measuring the quality of sleep whether good or not using the Pitsburgh sleep quality index questionnaire. Data collection is divided into two parts, namely the collection of working time data from machinists and assistant machinists to determine the level of fatigue and the collection of data from the distribution of questionnaires to determine sleep quality. Working time data is the schedule of machinists and assistant machinists every day which will then be calculated the level of fatigue using the fatigue index calculator. For the calculation of sleep quality, the Pitsburgh sleep quality questionnaire was distributed to 62 respondents. From the results of the calculation of the fatigue index calculator for machinists and assistant machinists every day, it is found that the fatigue index value varies for each day. This can also be seen from the results of the calculation of the standard deviation for 62 respondents which ranges between the value of 6 or 7. The results of the calculation of the sleep quality index showed that 84% of machinists and assistant machinists have a good sleep quality.
Desain Sumur Resapan Pengolahan Limbah Cucian Mobil X Mela Ardeline; Revi Lasmita; Winda Yuliana Sari
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 3 No. 1 (2025): Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v3i1.734

Abstract

Car washes have become increasingly popular in some areas, but this growth has also had a negative impact on environmental quality, as untreated wash water is often discharged directly into car wash drainage systems without any prior treatment. This discharge of unfiltered wastewater can lead to high levels of COD (chemical oxygen demand) and surfactants in nearby water sources if carried out intensively. Much of the wastewater is often classified as waste. It is discharged by car wash operators into the drainage system and eventually into smaller waterways. In 2014, the Minister of the Environment highlighted the importance of managing cleaning waste due to its harmful effects on the environment and health. Based on the Pekanbaru Municipality's Regional Regulation No. 8 of 2003 on the payment of liquid waste treatment control permit, which stipulates that every industry must carry out waste treatment before discharging into the environment and each industry must also pay a fee, this study will allow the design of absorption wells, which will be used to treat liquid waste from car washes, so that the wastewater absorbed into the ground is no longer a contaminated liquid waste. By treating the waste by the method of infiltration pits, it is hoped that the environment and the health of the residents around the laundry will be well preserved.
DESAIN TEMPAT PENAMPUNGAN SAMPAH REDUCE, REUSE, RECYCLE (TPS 3R) Revi Lasmita; Mela Ardeline
Biomedical and Environmental Health Technology Vol 2 No 1 (2025): Biomedical and Environmental Health Technology (BIOHEALTH)
Publisher : Institut Kesehatan dan Teknologi Al Insyirah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35328/yawtd612

Abstract

Sampah adalah sisa kegiatan sehari hari manusia atau proses alam yang berbentuk padat atau semi padat berupa zat organik atau anorganik bersifat dapat terurai atau tidak dapat terurai yang dianggap sudah tidak berguna lagi dan dibuang ke lingkungan. Pada prinsipnya, penyelenggaraan TPS 3R menggunakan konsep Reduce (mengurangi), Reuse (menggunakan kembali) dan Recycle (daur ulang) dimana upaya pengurangan sampah dilakukan di sumber pada skala komunal atau kawasan sehingga volume sampah yang diangkut ke TPA dapat berkurang secara signifikan. Proses pengolahan sampah yang berlangsung di TPS 3R meliputi proses pemilahan sampah yang secara umum dibagi menjadi sampah organik (dedaunan dan sisa makanan), sampah anorganik ekonomis (plastik, kertas, logam, kaca, dan lain sebagainya), sampah spesifik dan residu. Sampah organik diolah melalui proses biologis, sedangkan sampah anorganik dipilah secara mendetail agar dapat disalurkan kepada pelaku usaha daur ulang proses lanjutan. TPS 3R dapat berkolaborasi dengan bank sampah dalam rangka pengelolaan sampah anorganik ekonomis untuk mendorong pemilahan dapat dilakukan sejak dari sumber. Selain itu banyak cara lainnya yang berkembang saat ini agar dapat mendorong pelibatan aktif masyarakat. Pemilahan sampah sejak dari sumber diharapkan sudah terlaksana minimal 80% dari masyarakat yang terlayani TPS 3R agar mempermudah dan memaksimalkan pengolahan sampah di TPS 3R. Penelitian Desain TPS 3R ini dilakukan di Kelurahan Pematang Kapau, Kecamatan Kulim Kota Pekanbaru yang merupakan salah kelurahan di Kota Pekanbaru yang belum memiliki sarana TPS 3R. Desain TPS 3R ini diharapkan dapat menjadi solusi dalam mengatasi masalah sampah di Kelurahan Pematang Kapau.
Occupational Health and Safety Risk Analysis Using The HAZOP Method at UD Kerupuk Mamak Kito Ardeline, Mela; Lasmita, Revi
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 2 (2025): September 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i2.331

Abstract

Occupational Health and Safety (OHS) is an approach designed to prevent workplace accidents that may cause death, injury, or disability. If potential hazards in the workplace are not adequately identified and managed, they can lead to fatigue, musculoskeletal disorders, injuries, or serious accidents. Due to the high-risk nature of its production processes and the lack of ergonomic considerations, the kerupuk processing industry at UD Mamak Kito must pay greater attention to Health, Safety, and Environment (HSE). One method to support OHS implementation is the HAZOP (Hazard and Operability Study) method, which systematically identifies potential hazards in the workplace. The study identified ten high-risk conditions, primarily associated with the use of personal protective equipment (PPE), ergonomics, and exposure to high heat or hot oil. Six moderate-risk conditions were also found, including failure to use PPE and minor environmental hazards. Low-risk factors, including minor cuts and slippery surfaces, were additionally observed. Based on these findings, recommended improvements include enhancing workplace conditions and promoting safer work practices to reduce the risk of accidents and occupational health problems.
Size and Shape Distribution of Microplastics in PET Recycled Wastewater and Their Removal Behavior during the Coagulation–Flocculation Process Fadlilah, Lilya Irsianti; Ardeline, Mela; Lasmita, Revi
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 2 (2025): September 2025
Publisher : Journal of Engineering Science and Technology Management

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Abstract

Plastic Recycling Facilities (PRFs), although intended to reduce plastic pollution, can act as potential sources of microplastic release due to mechanical processing activities. This study aims to investigate the size and shape distribution of microplastics in polyethylene terephthalate (PET) recycling wastewater and to evaluate their removal behavior through coagulation–flocculation processes. Wastewater samples were collected from several treatment stages of the wastewater treatment system at a PET recycling facility. The results indicate that microplastics are predominantly fragment-shaped, with medium-sized particles representing the most abundant fraction. Coagulation–flocculation was shown to effectively remove microplastics, particularly fragment-shaped and medium-sized particles, compared to film and fiber forms. Removal efficiency was influenced by microplastic size and shape characteristics. These findings suggest that coagulation–flocculation has strong potential as an effective method for controlling microplastic release from PET recycling wastewater and provides a basis for developing more targeted wastewater treatment strategies.
Co-Authors Aras Mulyadi Ardeline, Mela Fadlilah, Lilya Irsianti Fauzi, Manyuk Gusnanda Jecky Asmura Putri Permata MS, Ayu Syarfi Daud Winda Yuliana Sari