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Department of Environmental Engineering Faculty of Landscape Architecture and Environmental Technology Universitas Trisakti, Jakarta Gedung K, Kampus A Jl. Kyai Tapa Grogol Jakarta 11440, Indonesia
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INDONESIA
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY
Published by Universitas Trisakti
ISSN : 25799150     EISSN : 25799207     DOI : https://dx.doi.org/10.25105
Core Subject : Science, Agriculture, Social, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Energy Environmental Science
The scope of the journal emphasis not limited to urban environmental management and environmental technology for case study in Indonesia and for other region in the world as well. Urban Environmental Management: environmental modeling, cleaner production, waste minimization and management, energy management and policies, water resources management, water supply and sanitation, industrial safety and health, water recovery and management, urban environmental pollution-diseases and health status, eco-drainage, flood risk management, risk mitigation, climate change and water resource adaptation. Environmental Technology: energy efficiency, renewable energy technologies (bio-energy), environmental biotechnology, pollution control technologies (wastewater treatment and technology), water treatment and technology, indigenous technology for climate change mitigation and adaptation, solid waste treatment and technology
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Teknik Lingkungan
Articles 313 Documents
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WASTEWATER QUALITY AND POLLUTION LOAD OF EACH STAGE IN TEMPEH PRODUCTION Pramaningsih, Vita; Hansen, Hansen; Praveena, Sarva Mangala; Styana, Ucik Ika Fenti
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 3, OCTOBER 2022
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i3.12838

Abstract

Aim: This study is purpose to understand the chemical and physical characteristics and pollution load in each step of tempeh wastewater: washing, boiling, soaking and mixing. Tempeh is traditional food from soybean fermentation. Tempeh has a lot of healthy contents as protein and vitamin. However, wastewater from tempeh production is discharge to river directly which considered as environmentally damaging. However, the characteristics of wastewater from tempeh production and its level of environmental impacts to environment are limitedly studied. Methodology and Results: Tempeh wastewater was analyzed in chemical and physical parameters. Chemical characteristics analyzed are pH, Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD). pH was measured using pH meter, BOD using SNI 6989.72:2009 method and COD using SNI 6989.2:2019 method. The physical parameter analyzed is Total Suspended Solid (TSS) and analyzed using SNI 6989.3: 2019 method. Pollution load calculated by deviation maximum pollution load and pollution load existing. Result of this study findings indicated that the highest BOD 299.40 mg/L and COD 540.66 mg/L was found in soaking step compared to other steps in tempeh production. Highest TSS 655.20 mg/L was found in boiling step. The pH values in all steps were acidic 4 and 5. Allocation Pollution load of: TSS overall exceeded the capacity, BOD and COD overall exceeded the capacity except in washing step (BOD 304.39 kg/day and COD 857.78 kg/day). Conclusion, significance and impact of study: The Highest TSS of tempeh wastewater processes was in boiling step while the highest organic matter was detected in soaking. Further for whole pH were acidic and exceeded the standard. Allocation of pollution load for TSS, BOD and COD exceed the standard except for BOD and COD in washing waste. Overall tempeh wastewater needs treatment to prevent river pollution.
THE USE OF BAGASSE SYNTHETIC SURFACTANTS AS MATERIAL FOR ENVIRONMENTALLY FRIENDLY POLICIES TO IMPLEMENT ENVIRONMENTAL MANAGEMENT Setiati, Rini; Adisoemarta, Paulus Suryono; Fathaddin, Muhammad Taufiq; Marpaung, Tarida Surya; Rinanti, Astri; Satriabudi, Jachanan
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 2, APRIL 2022
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i2.13534

Abstract

Aims: The aim of this research study is to show that the use of synthetic surfactant from bagasse is Environmentally Friendly Policies. Environmental management is an important step that needs to be taken on this immediate moment. Various human and industrial activities surely have affected the environment. Environmental management should include a number of groups from different varieties such as academics, policy makers, non-governmental organizations, corporations’ employees, government’s employees and related multidisciplinary groups. Methodology and Results: Environmental management will produce an ecological process and shapes industrial ecology which consists of four components namely; production, consumption, waste/by-products and raw materials. Bagasse as one of industrial solid wastes involved in environmental management will also produce ecological process. Bagasse which is produced from sugarcane processing can be further reprocessed into SLS surfactant that is useful for oil companies as injection fluid on reservoirs to improve oil recovery level. Conclusion, significance and impact of study: Environmental management can be applied between two industries that have mutualism symbiosis relationship through secondary production. Waste minimization can be achieved through bagasse processing. Sugarcane bagasse reprocessing into SLS surfactant is a sustainable program that supports sustainable material management effort. The action to reprocess natural waste into a valuable economical material can also alter human behavior into a more environmental friendly type of behavior.
THE ECO ENZYME APPLICATION ON INDUSTRIAL WASTE ACTIVATED SLUDGE DEGRADATION Wikaningrum, Temmy; Hakiki, Rijal; Astuti, Maryani Paramita; Ismail, Yunita; Sidjabat, Filson Maratur
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 2, APRIL 2022
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i2.13535

Abstract

Aim: This study aims to determine whether the application of eco enzyme affects the industrial waste activated sludge degradation and to compare the effects of eco enzyme made from oranges and tomatoes. Methodology and results: The experiments were done on the laboratory scale for 12 days by applying 10% of eco enzyme in the sludge samples. It showed both tomatoes and oranges eco enzymes can decrease the pH from 6.9 to 4.7 compared to control which was stable at 6.9. The reduction of COD, TSS, and VSS by tomato eco enzyme applications were 61%, 39% 41% respectively compared to by orange eco enzyme application that showed a higher reduction of 78%, 45%, 46% respectively. The control samples also show the reduction of COD, TSS, and VSS by 21%, 23%, 30% respectively. The reduction of organic content in the control samples of sludge (8.9%) was higher than the samples with eco enzyme (3.5%). Conclusion, significance, and impact study: The results showed that eco enzyme application significant statistically affected reduction of pH, COD, organic content, but not significant statistically on TSS and VSS reductions. Comparing the application of orange and tomatoes eco enzyme did not show the significant different treatment.
STUDY OF MODIFIED PERFORATED BREAKWATER AS RENEWABLE ENERGY DEVICE Setyandito, Oki; Novandy, Novandy; Nizam, Nizam; Anda, Martin; Kusumadewi, Riana Ayu; Wijayanti, Yureana
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 2, APRIL 2022
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i2.13536

Abstract

Aim: This study investigates to determine the influence of wave steepness, relative freeboard, and breaker parameters on overtopping discharge at a perforated breakwater. Methodology and results: The research method used was using both a numerical model simulations on three-dimensional computational fluid dynamics (CFD) modelling software namely FLOW-3D; and empirical equation computation. The evaluation of both approaches were performed for understanding the characteristics of wave discharge that overtopping the perforated breakwater. The experimental results of modified perforated breakwater revealed that the lowest slope possible with the highest porosity possible can generate the highest value of dimensionless overtopping discharge for wave energy harvesting. Conclusion, significance and impact study: The findings of this study formulated the optimum slope and porosity to the highest wave energy harvested. Further studies recommend that data collection from onsite trials of modified perforated breakwater are performed.
COMMERCIAL PROPERTY DEVELOPMENT PROGRAM OF HIGHEST AND BEST USE STUDY IN INDUSTRIAL AREA SIER SURABAYA Pribadi, I. G. Oka Sindhu; Kesuma, Meyriana; Irawati, Miya
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 2, APRIL 2022
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i2.13537

Abstract

Part of Surabaya Industrial Estate Rungkut (SIER) Area is planned to become Central Business District (CBD) in accordance with the direction of the Surabaya City Government. The land use is changed due to the decrease of carrying capacity of the infrastructure in the environment around SIER, caused by density increase since Middle East Ring Road (MERR) was opened in 2012. In addition, some of the areas that became CBD areas are part of the PT SIER area (97.4 Ha). Aim: This study was aimed to determine alternative land functions. Methodology and results: Since CBD is generally dominated by commercial properties, this research focuses on commercial property development programs carried out within the scope of the Highest and Best Use (HBU) Study. This research was conducted through location, site, and market analysis, completed with recommendation for property type in SIER location. Conclusion, significance and impact study: Based on macro market analysis, supply of retail, hotel and apartment property is increasing, while supply of office is decreasing. The results of this study are the best and highest value proposals for the development of commercial property functions (apartments, offices, shopping areas, and hotels), so that the investment is not high risk. In addition, the result can be used as a policy orientation for all interested parties, especially PT SIER in the development of CBD in its area, related to the development stage that is adjusted to the interests and market conditions.
SOLID WASTE ANALYSIS AND PROCESSING POTENTIAL IN THE TOURISM SECTOR: CASE STUDY IN NUSA DUA, SOUTH KUTA, BALI Widyarsana, I Made Wahyu; Priyanka, Made Ayu; Devianto, Lahur Akbar
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 2, APRIL 2022
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i2.13538

Abstract

Aims: The study of waste generation and composition in 6 types of tourism facility in Nusa Dua is carried out to analyze the waste processing potential and determine a proper waste management needed for tourism areas. Methodology and results: The primary data collection methods including field observations for existing waste separation, sampling of waste generation and composition at source, interviews with the facility’s management and characteristics of certain types of waste. Meanwhile, secondary data of waste generation and composition for hotels and the mall is acquired from waste collection services in Nusa Dua and previous studies for typical facilities. Nusa Dua produces around 11 tons of waste per day with hotels being the highest contributor of waste compared to other tourism facilities. The waste produced in Nusa Dua comprises around 70% of organic waste including food and yard waste and the remaining 30% includes paper, plastic, glass, metal, and other waste. Conclusion, significance and impact study: Aside from maximizing waste processing, Nusa Dua should execute campaigns to support the government’s regulation regarding the ban on styrofoam products, plastic bags, and plastic straws which gradually will reduce the amount of non-recyclable waste produced by the area.
THE USE OF SPENT BLEACHING EARTH (SBE) AS AN ADSORBENT TO REDUCE FREE FATTY ACIDS IN WASTE COOKING OIL Maharani, Dianindita Rizki; Ruhiyat, Ratnaningsih; Iswanto, Bambang; Juliani, Any
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 2, APRIL 2022
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i2.13539

Abstract

High free fatty acids in waste cooking oil can interfere with the re-use of the cooking oil. Therefore, the absorption technique is one way that can reduce the free fatty acids contained in waste cooking oil. Aim: The purpose of this study is to find out the ability of Reactivated Spent Bleaching Earth (RSBE) to adsorb free fatty acids contained in waste cooking oil to be biodiesel products. In this study, waste cooking oil was collected from fried food sellers in Bekasi, while spent bleaching earth (SBE)-one of the solid wastes produced by refinery oil palm industry as an adsorbent-was from the palm oil industry PT X. For Reactivated Spent Bleaching Earth (RSBE), the redundant used 0.7 M HNO3. To obtain the optimum products, The redundant applied the variation of time (i.e., 30, 45, 60, 75, and 90 minutes) and concentration (6%, 9%, 12%, 15%, and 18%). Methodology and results: Results indicated that the time variation of temperature 90 minutes were the maximum and the concentration of 15% were the optimal combination to reduce free fatty acids 0.65%. Conclusion, significance, and impact of study: The values of water and ash contents of RSBE also meet the quality standard as activated carbon and can be used as an adsorbent for the purification of waste cooking oil. The oil content in SBE is less than 3% and is considered not to be a toxic hazardous waste. Therefore, it can be reused without pre-treatment. In addition, the redundant found that there were changes pore on the surface of the SBE, both activated and not activated. To conclude, SBE can be used as an absorbent to absorb the fatty acids in waste cooking oil.
Cover Vol. 5 No. 2 urban, admin
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 2, APRIL 2022
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i2.13540

Abstract

CRITICAL SUCCESS FACTORS FOR MODULAR CONSTRUCTION ON HIGH-RISE RESIDENTIAL BUILDINGS BASED RISK MANAGEABILITY TO INCREASE PROJECT TIME PERFORMANCE Aulia, Dinal; Haryanto, Vian Marantha; Waseso, Agung Barokah; Prayitno, Endarmadi Aji; Sampetoding, Mira Marindaa T
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 6, NUMBER 2, OCTOBER 2023
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v6i2.13826

Abstract

International Construction Costs published in Comparison 2020 continued to increase as an impact of the Covid-19 pandemic, The modular system is considered able to answer the problems of increasing costs. Although modular construction has been widely applied to low-rise buildings, application in high-rise buildings remains limited, less than 1% worldwide. The need for residential high-rise building applying modular construction in Indonesia becomes important. The interdependence between parties in modular projects is greater than in conventional methods. Unavailability of design guidelines hinders the construction industry in implementing modular technology. The purpose of this study is to analyze the critical success factors for modular construction of residential high-rise buildings applying risk-based management to improve project time performance. Forty-one Indicators were drawn from literature reviews and specialist interviews to conduct a sustainability evaluation. The survey was submitted to case project developers, designers, supervisors, and contractors in Indonesia, thereafter statistically analyzed using SPSS and risk management analysis with three stages: risk sources, risk drivers and risk causes. Critical success factors for drawing approvals have a considerable influence on modular construction among 15 other factors, followed by supply chain and design standardization. It is necessary to mitigate these risks to improve project time performance.
RHEOLOGICAL STUDY ON THE PARAMETERS AFFECTING THE VISCOSITY OF THE GREEN SOLUTION CONSISTING SLS AND LTTM Riswati, Shabrina Sri; Setiati, Rini; Prakoso, Suryo; Ratri, Paramita Jaya; Yskak, Ardak; Irvan, Rayhan
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 6, NUMBER 1, APRIL 2023
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v6i1.13967

Abstract

Enhanced Oil Recovery (EOR) is known to effectively improve oil recovery by producing the residual oil saturation in a reservoir. Many chemicals for injected fluid in EOR are synthetic and harmful to the environment. Aims: This study aims to characterize a newly developed green solution consisting of Sodium Lignosulfonate (SLS) and a Low Transition Temperature Mixture (LTTM) for injection agent. Methodology and Results: The concentration of surfactant was defined using weight percentage, which was calculated from the portion of the total weight of LTTM. The characterization was approached by analyzing the behavior of the green solution based on the power law analysis of the rheological measurement. The analyses of  value, viscosity, shear rate, and shear stress were carried out. Increasing in viscosity was caused by the additional molecular mass of sucrose in the solution. This study found that the SLS concentration and LTTM ratio affects the rheological behavior of the green solution. Conclusion, significance, and impact study: According to the results, adding the SLS concentration increases the probability of the green solution becoming an EOR agent by showing shear-thinning behavior. Further studies are required to ensure the feasibility of the green solution during the injection period and the propagation in the reservoir.

Page 24 of 32 | Total Record : 313

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