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All Journal Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Jurnal Ilmu Lingkungan JURNAL TEKNOLOGI LINGKUNGAN Journal of Environmental Engineering and Sustainable Technology Journal of Mathematical and Fundamental Sciences Journal of Engineering and Technological Sciences Journal of Geoscience, Engineering, Environment, and Technology Journal of Science and Applicative Technology IJEMS (Indonesian Journal of Environmental Management and Sustainability) J SIG (Jurnal Sains Informasi Geografi) Journal of Multidisciplinary Academic Al-Ard: Jurnal Teknik Lingkungan Jurnal Inovasi Pendidikan dan Sains Sustainable Environmental and Optimizing Industry Journal Journal of Multidisciplinary Applied Natural Science Serambi Engineering
Yuni Lisafitri, Yuni
Department Of Environmental Engineering, Faculty Of Regional And Infrastructure Technology, Institut Teknologi Sumatera, Lampung 35365, Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences

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SCREENING OF INDIGENUS BACTERIA’S DEGRADING OF HYDROCARBON PETROLEUM FROM POLLUTED SEA AT BANDAR LAMPUNG’S DOCK Yuni Lisafitri; Tastaptyani Kurnia Nufutomo; Fitralia Elyza
Journal of Environmental Engineering and Sustainable Technology Vol 6, No 2 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2019.006.02.3

Abstract

Indonesia is committed to achieving the SDGs in 2030. One of SDGs is protect the marine ecosystem. Bandar Lampung which has a coastal area in a form of a dock for sea transportation and the anchoring of fishing boats. These area are starting to be polluted due to waste, one of which is the fuel waste of ships or fishing boats that are in the area. When the quality of sea water decreases due to pollution it will have an impact on population and diversity of marine life. If this happens the sea will be damaged and the income of fishermen will decrease. Various studies have been conducted to overcome problems caused by oil (petroleum hydrocarbons), especially research on the use of microbiology in remediating polluted environments. Therefore, this study was conducted to test P1 isolates isolated from sea water in docks around Bandar Lampung. The Measurement was carried out at The Integrated Laboratory of ITERA by observing the growth of the bacteria (population of bacteria) on selective media that had been added with diesel oil as much as 2% (v/v). This measurement was carried out on day 1, day 4 and day 7 after incunbation for population and for % TPH was measurement in the first day and the last day of incubation. The results obtained that the GT1 isolate have a good result in population and decreasing of TPH than the other isolate.
Activated Cassava Leaves As Low-Cost Adsorbent to Remove Dyes From Water Chairunnisa Chairunnisa; Yuni Lisafitri; Mariyam Mariyam
Journal of Science and Applicative Technology Vol 6 No 1 (2022): Journal of Science and Applicative Technology June Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v6i1.771

Abstract

In this study, activated cassava leaves were prepared using NaCl (CLN) and KOH (CLK) as novel and low-cost materials for removing dyes from water. The prepared materials were characterized using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The adsorption experiments were carried out under different conditions of initial dye concentration (50 – 600 ppm), pH solution (4 – 10), and contact time (1 – 180 min) under room temperature. The adsorption kinetics has been studied using the pseudo-first and pseudo-second-order. The equilibrium isotherms have been analyzed using the Langmuir and Freundlich models. The adsorption kinetics of methylene blue onto activated cassava leaves follows a pseudo-second-order model. According to the isotherm study, the Langmuir model shows the best fitting results with the maximum adsorption capacity of 217.39 mg/g and 416.66 mg/g for cassava leaves that were activated by NaCl and KOH, respectively.
Progress and Challenges of Biological Leaching of Heavy Metal in Coal Ash from a Power Plant Yuni Lisafitri; Edwan Kardena
Journal of Engineering and Technological Sciences Vol. 55 No. 1 (2023)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2023.55.1.8

Abstract

Bioleaching is a technique for reducing the heavy metal content of coal ash by using bacteria, fungi, or yeast. Previous studies in heavy metal bioleaching of coal ash discussed the factors affecting the process, but as yet there is little information on the challenges of using microorganisms. Therefore, this study aimed to obtain comprehensive information regarding the use of microorganisms in heavy metal bioleaching. Heavy metal concentrations in coal ash are low, and the metals are diverse. The components of coal ash are complexes that cannot leach certain heavy metals according to previous studies. These low concentrations and complex components make it difficult to investigate the bioleaching mechanism. The combination of biological and chemical interactions involves various components in this system. The high concentration of iron and heavy metal leached could be toxic for microorganisms. The process is influenced by several factors, such as particle size, pH, and pulp density. Most heavy metal bioleaching studies on coal ash have been conducted on a small scale to control conditions affecting the process. Bioleaching kinetics in coal is a liquid-solid reaction that can be represented by the shrinking core model, which was mainly used in this study.
UJI EFEKTIVITAS CACING TANAH, KOTORAN SAPI DAN EM4 TERHADAP PENGOMPOSAN SERBUK GERGAJI KAYU JATI Mufti, Aulia Annas; Harliyanti, Putri; Lisafitri, Yuni
Sustainable Environmental and Optimizing Industry Journal Vol 3, No 1 (2021)
Publisher : Universitas Sahid

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36441/seoi.v3i1.327

Abstract

Di Kota Metro, Provinisi Lampung banyak terdapat limbah serbuk gergaji kayu jati. Hal tersebut dikarenakan semakin berkembangnya kerajinan kayu. Seringkali penanganan Limbah serbuk gergaji kayu jati dilakukan dengan cara di bakar. Hal itu akan menimbulkan dampak negatif terhadap lingkungan seperti pencemaran udara. Salah satu alternatif untuk mengurangi limbah serbuk gergaji yaitu dengan cara pengomposan. Penelitian ini dilakukan berdasarkan variasi perlakuan V1: 0,5 kg serbuk gergaji + 0,5 kg kotoran sapi + 500 ml air, V2 : 0,5 kg serbuk gergaji + 0,5 kg kotoran sapi + 500 ml air + 0,25 kg Cacing, V3 : 0,5 kg serbuk gergaji + 0,5 kg kotoran sapi + 500 ml air + 0,25 kg Cacing + 10 ml EM4, V4 : 0,5 kg serbuk gergaji + 0,5 kg kotoran sapi + 500 ml air + 0,25 kg Cacing + 15 ml EM4. Hasil dari penelitian ini adalah Variasi perlakuan kompos yang paling efektif adalah perlakuan V2 dengan penambahan cacing dengan nilai C/N rasio, pH, suhu, dan warna sudah sesuai dengan standar SNI 19-7030-2004. Penambahan cacing dan dekomposer EM4 berpengaruh terhadap perubahan suhu, pH, warna dan C/N Rasio, hal ini dibuktikan dari hasil pengujian yang berbeda-beda pada setiap perlakuan.
Efektivitas Biokonversi Sampah Organik di Institut Teknologi Sumatera Menggunakan Larva Black Soldier Fly (Hermetia Illucens) Gabriella Anggi Renca; Aulia Annas Mufti; Firdha Cahya Alam; Alfian Zurfi; Yuni Lisafitri; Irhamni
Jurnal Serambi Engineering Vol. 9 No. 4 (2024): Oktober 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In an effort to utilise organic waste that also has high economic value, a promising technology for processing organic waste is bioconversion using Black Soldier Fly (BSF). This research aims to determine the effect of variation in feeding rate on the nutritional content of BSF larvae, the quality of BSF larvae residue and the waste reduction index in the ITERA food waste organic waste decomposition process. The results of the research and data analysis tests show that the residue of BSF larvae does not meet the SNI 19-7030-2004 organic fertiliser quality standards in terms of phosphorus content, but the elements P, K and C/N ratio still meet the standards. Analysis of the proximate content of BSF larvae showed that the highest fat content was 0.8529 in reactor B; for the highest protein content was 12.7204 in reactor A and the highest water content was 64.1010 in reactor C. Calculation results of the waste reduction index reached the highest value of 5.94 grams per day.
Toxic and Hazardous (B3) Solid Waste Management at Abdul Moeloek General Hospital: An Implementation Assessment in 2022 and Recommendations Hasiany, Sillak; Naibaho, Riadi Tomson Eventius; Lisafitri, Yuni; Putri, Intan Andriani
Indonesian Journal of Environmental Management and Sustainability Vol. 7 No. 1 (2023): March
Publisher : Magister Program of Material Science, Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2023.7.1.32-37

Abstract

Making sure that the health and environment are taken care of, solid B3 Waste produced by hospitals has to be treated according to existing regulations. As an A-class hospital in Bandar Lampung, AM General Hospital commit to conducting good practices for its solid B3 waste management. This study aims to analyze the current implementation of solid B3 waste management, the compliance of AM General Hospital’s B3 waste management Standard Operation Procedure (SOP) with current regulations, and recommend improvement strategies for solid B3 waste management in AM General Hospital. For eight consecutive days in August 2022, solid B3 waste samples were collected and analyzed. The average solid B3 waste produced by AM General Hospital was 285 kg/day for infectious waste and 6.3 kg/day for sharp waste. Inpatient installation contributed the majority of solid B3 waste there. Due to the observation sheet that was created according to the regulations, 65% of AM General Hospital’s SOP involving sorting; storage; collection; transportation; and disposal has already complied with the regulations. Several shortcomings were found such as the absence of an official solid B3 waste handling report; the absence of proper labeling in the B3 waste containers; and the use of black plastic bags. Analytical Hierarchy Process (AHP) data analysis technique was deployed, resulting in a technology application and waste minimization as improvement recommendations.
Penerapan Lubang Resapan Biopori Dalam Meningkatkan Laju Infiltrasi di Desa Sungai Langka Nadia Dhannov; Irhamni; Fajriharish Nur Awan; Mutiara Fajar; Nabila Putriyandri Alifa; Yuni Lisafitri; Sillak Hasiany
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Sungai Langka Village area lacks drainage and has elevated roads, causing water to run off during rainfall and onto the roads and into people's yards. In these conditions, efforts will be made to utilise water runoff as an alternative water source. This study aims to determine the effect of infiltration in the application of biopori infiltration pit technology. This research was conducted using a quantitative approach. The data were processed using the Horton method and analysed descriptively. Infiltration data was collected in situ in the field. The data compared the infiltration rate before and after the application of biopori infiltration pits. The results showed that the infiltration rate was constant at 46 cm/hour, 44 cm/hour, 32 cm/hour, 36 cm/hour and 32 cm/hour before the application of biopori infiltration pits. Meanwhile, the infiltration rates after the application of biopore infiltration pits were 110 cm/hour, 78 cm/hour, 70 cm/hour, 104 cm/hour and 138 cm/hour. The aim of the study was to determine how increasing infiltration rates can reduce water runoff and increase groundwater reserves.
Analisis Variasi Jenis Perekat Tetes Tebu dan Tepung Tapioka Pada Pemanfaatan Limbah Ampas Tebu Menjadi Briket Mufti, Aulia Annas; Akram, Muhammad; Lisafitri, Yuni; Kurnianingtyas, Erlina
Al-Ard: Jurnal Teknik Lingkungan Vol. 9 No. 2 (2024): March
Publisher : Department of Environmental engineering, Faculty of Science and Technology, Islamic State University Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/alard.v9i2.1857

Abstract

Energy is a factor that has a very important role in various economic activities and people's lives. The availability of energy and fuel oil is currently lacking, indicating the need to switch to alternative fuels, one of which is charcoal briquettes. Sugarcane bagasse is one of the many biomasses that can be used. as a raw material for making briquettes. The process of making charcoal briquettes requires additional material in the form of an adhesive whose purpose is to glue the charcoal powder so that it becomes a solid form. As a binder for briquettes, molasses has the potential to increase the calorific value because it is rich in carbon content derived from sucrose which is abundant in molasses. Therefore, a study was conducted to analyze the fuel characteristics of bagasse briquettes with adhesive variations in the form of tapioca flour and molasses. The parameters to be tested are moisture content, ash content, volatile matter content during the heating process, bound carbon and heating value. Research on the production of charcoal briquettes was carried out using bagasse waste with variations in the addition of tapioca adhesive and molasses. It can be concluded that the best quality briquettes are A1 briquettes, namely bagasse briquettes with 0.5 gram of adhesive drops, which are close to the standard criteria of briquettes, namely the highest calorific value, lowest moisture content, lowest ash content and lowest volatile matter content.
Implementation of Biopore Infiltration Holes in Increasing Soil Permeability in Sungai Langka Village Meysha Azhara; Irhamni Irhamni; Fajriharish Nur Awan; Aulia Annas Mufti; Yuni Lisafitri; Bambang Prasetio; Sillak Hasiany; Tastaptyani K. Nufutomo; Alfian Zurfi; Dian Neli Pratiwi
Jurnal Inovasi Pendidikan dan Sains Vol 6 No 3 (2025): December
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/jips.v6i3.2665

Abstract

This study aims to improve low soil absorption capacity by implementing biopore infiltration hole technology to reduce waterlogging and increase groundwater availability, especially during the dry season. This biopore infiltration hole technology can create additional pores, allowing rainwater to infiltrate more rapidly. The method used was a field experiment with five soil samples taken from Dusun II, Sungai Langka Village. The biopore infiltration holes were constructed to a depth of 100 cm and a diameter of 10 cm, and soil permeability was measured using the falling head method before and after installation. This method was selected because it is suitable for fine-grained soils with low absorption capacity. Observations were conducted for 14 days to monitor changes in the soil permeability coefficient driven by variations in moisture, microbial activity, and the decomposition of organic materials within the hole. The study found a significant increase in the soil permeability coefficient after the application of biopore infiltration holes. The highest increase occurred at sample point 5, where the permeability coefficient rose from 11.9 cm per hour to 45.7 cm per hour. In conclusion, the application of biopore infiltration holes effectively improves soil pore structure and enhances soil water-absorption capacity, providing an alternative solution for water management and reducing waterlogging in residential areas
Co-Authors Alam, Firdha Cahya Alfian Zurfi Alfian Zurfi Alfian Zurfi Asril, Muhammad Aulia Annas Mufti Aulia Annas Mufti Bambang Prasetio Bambang Prasetio Bayo Alhusaeri Siregar Chairunnisa Chairunnisa Chairunnisa Chairunnisa Chairunnisa Chairunnisa Deni O Lestari Dian Neli Pratiwi Dudung Muhally Hakim DWI ANDREAS SANTOSA EDWAN KARDENA Endang Setiawati Esya Desfia Putri Fajriharish Nur Awan Fajriharish Nur Awan Fitralia Elyza Gabriella Anggi Renca Harliyanti, Putri Irhamni Irhamni Kurnianingtyas, Erlina Mariyam Mariyam Merza Rahmawati Meysha Azhara Mufti, Aulia Annas Muhammad Akram Muhammad Asril Muhammad Ulin Nuha Mutiara Fajar Nabila Putriyandri Alifa Nadia Dhannov Naibaho, Riadi Tomson Eventius Novi K Sari Novi Kartika Sari Putri, Intan Andriani Raden Putra RAHAYU WIDYASTUTI Rizka Firdausi Pertiwi Sillak Hasiany Sillak Hasiany Sillak Hasiany, Sillak Simarmata, nirmawana Tastaptyani K Nufutomo Tastaptyani K. Nufutomo Tastaptyani Kurnia Nufutomo Yanies Meiyanti