bluuebunny/crossref_metadata_2025_split huggingface dataset:
An environmental impact assessment of restaurant operation: A case study of RM Restaurant in Garut, Indonesia
Authors: Munfarida I , Arida V 
Published: June 2023

Abstract
Food is one of the basic human needs. The availability of restaurants is very essential to support human life. In addition, the existence of restaurants in Garut Regency, which is one of the favourite tourist destinations in West Java, benefits local residents due to the opportunity for working and increasing the original local government revenue. A sustainable restaurant operation should be achieved regarding the impact of restaurant activities on the environment. The objectives of the study were to assess the impact of RM Restaurant on the environment and develop environmental management and monitoring. This research was a descriptive quantitative and qualitative research. The quantitative analysis aimed to analyse land use, surface water quality, water usage, and solid waste generation. The descriptive qualitative analysis was performed to come up with suggestions for environmental management and monitoring. This research was conducted in January-March 2022 during the operation of RM Restaurant, so the impact assessment was based on the observation, existing data, and laboratory data. The results show the environmental impact of RM Restaurant operation including land use change, decrease in surface water quality, and solid waste generation. We recommend environmental management including maintaining green open space, providing the wastewater treatment plant, and solid waste management. Environmental monitoring should be applied by measuring the land use according to Garut Regency Regulation Number 29 of 2011, monitoring the quality of surface water according to Indonesian Government Regulation No 22 of 2021, and monitoring solid waste generation.
Environmental impact study on conversion of multilayer metallized packaging to paving blocks with a Life Cycle Assessment (LCA) approach
Authors: Sinaga R Y H , Mulyono  , Vicarneltor D , Radini F A 
Published: June 2023

Abstract
Plastic waste management in Indonesia is relatively poorly implemented due to the limited number of recyclers. One of the most abundant plastic wastes is multilayer metallized plastic packaging (MLP). This study was conducted to analyze the environmental impacts of MLP and plastic bag waste conversion to paving blocks (PVB) with a life cycle assessment approach and aimed to determine whether such a process brings positive or negative impacts to the surrounding environment. The assessment was performed gate-to-gate on input data, including raw materials, energy, support materials, and output, using openLCA 1.11 software, ecoinvent 3.8 databases, and CML-IA baseline method. Secondary data on waste plastic treatment in a sanitary landfill was inferred from the database for comparative analysis. Environmental impacts arising from the production of 1 PVB (20 × 10 × 6 cm, 700 g) are acidification 0.00913 kg SO2 eq, eutrophication 0.00243 kg PO4 eq, freshwater aquatic ecotoxicity 0.8391 kg 1,4-DB eq, global warming (GWP100a) 2.68006 kg CO2 eq, human toxicity 1.2672 kg 1,4-DB eq, and terrestrial toxicity 0.00247 kg 1,4-DB eq. Compared to treatment in a sanitary landfill, conversion of MLP lowered eutrophication and freshwater aquatic ecotoxicity to the environment, whilst other impacts are higher due to energy input in the processes. Conversion of MLP to PVB is proposed as an alternative to plastic waste management.
The assessment of sustainable aquaculture model to improve the aquatic environment and productivity in the Indonesian coastal area
Authors: Sachoemar S I , Syaefudin  , Haryanti  , Adhi R P , Aliah R S , Riyadi A , Garno Y S , Susanto J P , Yaniharto D , Sujatmiko W , Sutanti  , Prayogo T , Widodo L , Lusia A , Sabudin  , Mawardi I , Dewa R P , Yanagi T , Morimoto A , Makino M , Wells M L 
Published: June 2023

Abstract
To study and review the Integrated Multi Tropic Aquaculture (IMTA) model of the closed system (CSIMTA) and open system (OSIMTA), experiments were carried out to determine their performance in improving the quality of the aquatic environment and productivity in the northern coastal area of Karawang, West Java and the southern coastal area of Bantaeng, South Sulawesi, Indonesia, respectively. The CSIMTA model experiment used four treatment models: Treatment model T-1 contained tiger prawns (Penaeus monodon) only, treatment model T-2 contained tiger prawns and saline tilapia (Oreochromis niloticus), treatment model T-3 contained tiger prawns, saline tilapia, and seaweed (Gracillaria verrucosa), and treatment model T-4 contained tiger prawns, saline tilapia, seaweed, and green mussels (Perna viridis). Meanwhile, the study of OSIMTA was carried out by measuring the physical and chemical parameters of the aquatic environment. The results of the CSIMTA model show that aquaculture containing tiger prawns, saline tilapia, seaweed, and green mussels of the T-4 was more productive and the quality of the aquatic environment was more stable than the other three treatments (T-1, T-2, and T-3). In the T-4, a bio-recycling system worked well where seaweed utilized the liquid waste resulting from the dissolution of feed residues and excrement from saline tilapia and tiger prawns as a nutrient supply for growth. Then, the organic waste was used by the green mussels as a feed source. The bio-recycling system also worked in the OSIMTA.
Seasonal hydrodynamic pattern and effect of marine sediment distribution in Banten Bay
Authors: Riyadi A , Sachoemar S I , Syaefudin  , Haryanti  , Adhi R P , Garno Y S , Susanto J P , Prayogo T , Widodo L , Lusia A , Sabudin  
Published: June 2023

Abstract
This study aimed to see the pattern of current velocity and direction at the time of high tide, high tide, low tide, and lowest low tide during the west and east monsoons as well as to see an increase in sedimentation. Oceanographic and environmental baseline data used in this study consisted of bathymetry, tides, winds, waves, ocean currents, and sediment. The model used was DHI MIKE 21 Flow Model FM. Based on the calculation of determining the type of tide using the Formzahl formulation 1.54, the tides in the study area were classified as single dominant mixed tides. In the west season, the maximum current velocity was 0.112 m/s with the dominant current direction coming from the northeast to the southwest and approaching the coast. In the east season, the maximum current velocity was 0.112 m/s with the dominant current direction coming from the northeast to the southwest and approaching the coast. The highest concentration of suspended sediment in December was when the seawater conditions were nearing low tide. The highest concentration of suspended sediment was in the eastern part of Pier 3 at 1120 g/m3. The most significant change in bed level in December was at Pier 3 on the east side where the elevation increase was +0.30 m and the elevation decrease was -0.40 m. From the information regarding the location of the abrasion and sedimentation of the jetty development, it is possible to know in advance the anticipation of the dredging plan and the mitigation of coastal abrasion.
The development of an action plan for the Jeneberang River pollution control based on the calculation of the total maximum daily load
Authors: Kurniawan B , Komarudin M , Safrudin  
Published: June 2023

Abstract
Jeneberang Watershed is one of the priority watersheds set by the Ministry of Environment and Forestry in the Sulawesi Island region and is the location of various important economic activities that contributes around 2% to the national gross domestic product (GDP). The results of water quality monitoring in 2018 and 2019 show that the average water quality status of the Jeneberang river was moderately polluted. This study aimed to develop an action plan for water pollution control derived from the calculation of the total maximum daily load (TMDL) to meet the river water quality standard. The method used in this study was the application of a numerical model of water quality combined with the spatial approach for calculating the TMDL. The calculation results indicated that the load of existing pollutants entering the Jeneberang river was 4,844.87 kg- BOD/day while the TMDL was 3,552.97 kg-BOD/day, therefore a load reduction of 1291.9 was required. Furthermore, it was necessary to reduce the water pollution load from domestic, industrial, and livestock activities by 871.37, 14.86, 337.28 kg-BOD/day, respectively, and from the combination of agriculture and built-up land by 68.39 kg-BOD/day. The action plan resulting from the development of TMDL is the construction of 122 units of communal sewage treatment plant with a budget of IDR 121.86 billion and 350 units of biodigester with a total budget of IDR 7.35 billion. Meanwhile, 46 inspectors and a budget of IDR10 billion per year are required to supervise industries. Thus, the study revealed that TMDL can be used as the basis for the development of an action plan.
Effect of storage time on in-situ parameters and total nitrogen analysis results of tofu liquid waste samples
Authors: Fitria N , Ainiyah F , Hamidah U , Sintawardani N , Koesmawati T A 
Published: June 2023

Abstract
Field parameter measurement is usually constrained by time management, causing measurement delays and, therefore, different results between field parameters and the actual environmental conditions. Tofu liquid waste contains a low pH (3–5) and suspended, colloidal, and dissolved organics matter at high concentrations; the latter might change rapidly and also cause changes to other parameters. Tofu liquid waste from a tofu factory outlet was used in this study. The field parameters in this study included pH, total dissolved solids (TDS), and electrical conductivity (EC) by storage time variation of 15, 20, 25, and 30 minutes. The total nitrogen was analyzed by the Kjeldahl method with a storage time variation of 2, 4, 6, and 8 days. The measurement of pH found no significant difference (sig > 0.05) up to 30 minutes of storage time, while EC and TDS significantly differed within 20 minutes. The total nitrogen was stable up to the second day of storage time at a storage temperature of 4–8 °C without preservatives. In water quality monitoring, the results of water samples analysis should be as close as possible to their values in the environment. This research shows that field parameters’ results can change quickly if the sample handling and analysis time are not by procedures, especially for EC and TDS. In addition, this study also shows that without giving H2SO4, the value of total nitrogen in tofu liquid waste samples decreased significantly after the second day of storage at 4–8 °C.
Mapping the environmental impacts from land subsidence hazard in Pekalongan City and its correlation with the subsurface condition
Authors: Sarah D , Soebowo E , Sudrajat Y , Satriyo N A , Putra M H Z , Wahyudin  
Published: June 2023

Abstract
Land subsidence in Pekalongan city has affected almost the entire municipality for at least ten years. Land subsidence has occurred in almost all Pekalongan city areas at 2-12 cm/year rates. The direct and indirect environmental impacts of land subsidence are enormous. We aim to map the environmental impacts of land subsidence in Pekalongan city and evaluate the severity of the impacts with the subsurface condition of the affected area. We employed site investigation using resistivity and CPTu soundings at representative sites to reveal the subsurface soils and site survey to map the environmental impacts. Resistivity measurements using a Schlumberger array were carried out at 24 sites, along with 12 CPTu measurements up to 30 m deep. Results show that the subsurface condition up to the depth of 30 m consists of alluvial sediment of clay, silt, and organic soils intercalated with lenses of sand. The alluvial sediment in the southern part is dominated by sandy soils and has a higher stiffness with cone resistance of 1-2 MPa and a friction ratio of 50-200 kPa. The subsurface soils in the northern part are dominated by clay, silt, and organic soils with low cone tip resistance of <0.5- 1 MPa, and friction ratio of <0.25-100 kPa. These values indicate that the sandy soils in the southern part are more compact and have higher bearing capacity than the soft, fine-grained soils in the northern area. The visible impacts of land subsidence include flood and inundation, settlement of buildings and roads, and cracks in houses and infrastructure. The severity of impacts worsens from South to North of the city. This condition is related to the subsurface stratification and engineering properties, where lower bearing capacity occurs in the north.
Characterization, risk assessment, and potential utilization of fly ash from PLTSa Merah Putih at Bantargebang, Bekasi, Indonesia
Authors: Robbani M H , Shoiful A , Hendrayanto P A , Dewanti D P , Fani A M , Kristyawan I P A , Pratama R A , Haris K A , Wiharja  , Hanif M 
Published: June 2023

Abstract
Municipal solid waste incineration (MSWI) has been adopted in Indonesia to reduce the volume and mass of municipal solid waste. However, as a by-product of waste combustion, fly ash generation cannot be avoided. It can cause an environmental problem if not managed properly. Hence, this study aims to investigate the characteristics of fly ash generated from Indonesia’s first waste-to-energy incineration pilot plant and its potential utilization. Fly ash was characterized using X-Ray fluorescence (XRF), BET surface area measurement, pore size distribution (PSD), scanning electron microscopy with energy-dispersive spectrometry (SEM-EDS), and X-ray diffraction (XRD). The characterization results showed that calcium was predominant, around 28%, followed by titanium, silica, iron, and aluminum, with values of 7.10%, 5.70%, 4.40%, and 4.30%, respectively. These results demonstrated that MSW incineration fly ash was classified as a very active high-calcium fly ash. The surface structure of fly ash was flaky and complex, with some irregular material. The particle size distribution of fly ash shows that the diameters of most particles were nearly 12 μm. The specific surface area of fly ash was 3.06 m2/g, the total-pore volume was 0.01 cm3/g, and the average pore size was 11.82 nm. In addition, the environmental risk assessment was evaluated using the toxicity characteristic leaching procedure (TCLP). TCLP concentrations of heavy metals, including arsenic, barium, beryllium, cadmium, chromium hexavalent, copper, lead, mercury, nickel, selenium, and zinc, were lower than the regulatory level, indicating a low environmental risk. Therefore, it has great potential for utilization as a paving block mixture material.
A web-based numerical model for sustainable management of Lake Batur, Bali: Preliminary results
Authors: Sunaryani A , Santoso A B , Muttaqien F H , Harvianto F , Rustini H A , Kartini N L , Nilawati D , Triwisesa E 
Published: June 2023

Abstract
Lake Batur is one of The National Priority Lakes according to President Regulation Number 60/2021 with the target of restoring water quality through the pollution control program for floating net fishery (FNF), agriculture, and other anthropogenic sources around the watershed. The regulation also states several internal measures designed to restore the lake’s water quality. Unfortunately, detailed information on pollution control priorities, the amount that must be controlled for water quality improvements to be visible, and the effectiveness of internal restoration efforts have yet to be obtained. This can hinder the lake restoration process and, furthermore, its sustainable management. This study aimed to develop a web-based numerical model as an open-source web-service for guiding restoration in Lake Batur. It is accessible via the interactive graphical user interface (GUI) running in a standard web browser and includes tools of varying complexity. The platform provides the user with features to set up some parameters, run and analyze the numerical water quality, and the possibility to set up, run and compare various lake management scenarios. The preliminary results show that the model was able to represent existing daily water quality dynamics. Hopefully, the model can be used as a tool for lake restoration and as a part of sustainable lake management.
The Effect of Geomembrane Plastic Usage on Microplastic and Heavy Metal Contamination in Salt Field
Authors: Nilawati  , Mukimin A , Djayanti S 
Published: June 2023

Abstract
Seawater is used to produce salt. For 10–15 years, geomembrane plastic has been used in salt fields in Indonesia to prevent contamination and increase quality and productivity. However, it is unfortunate that currently, seawater has been polluted by plastic waste, which has degraded gradually into small pieces about <5 mm in size called microplastics. In addition to microplastics, seawater is also polluted by heavy metals. Previous research indicated that the north coast of Central Java has been polluted by heavy metals whose content exceeded the threshold. The aim of this study was to analyze the amount of microplastic (MPs) and heavy metal contamination in salt. A microscope was used to measure the amount of MPs and AAS was used to measure the concentration of heavy metals. Variables that were conducted included sampling location (4 locations) and crystallization process (with and without using geomembrane). The results showed that the amount of MPs salt with a geomembrane was higher than without a geomembrane, at 337 and 326 particles/kg, respectively. The average is 332 particles/kg. Salts that use geomembranes have more contamination than salts without geomembranes. Heavy metal contamination of Pb, Cd, Hg, As, all of which were still within the threshold. The average Pb and Cd concentration in salts with and without geomembranes were 4.11 mg/kg and 4.14 mg/kg; 0.65 and 1.05, respectively. Meanwhile, the average of Hg and As concentrations for both were below than 0.001 and 0.005 mg/kg, respectively.
Inventory analysis of potential electronic waste generation in Setu, Tangerang Selatan
Authors: Parlina I , Salim M A , Robbani M H , Sopiah R N , Wahyono S , Widodo L , Suwedi N , Prasetiyadi  , Sitomurni A I , Adibroto T A , Aviantara D , Suciati F , Warto  , Zulaikha S 
Published: June 2023

Abstract
Electronic waste (E-waste) is currently one of the waste streams with the most significant growth rate due to the incredible technological advancement and greater use of information and telecommunications (IT) technologies. One of the main concerns regarding environmental contamination that people worldwide have is the management of electronic waste. This problem is due to the quickly rising use of technological devices. As a result, electrical and electronic equipment has a finite shelf life and eventually becomes outdated. Lack of knowledge regarding the amount of waste produced and the transit of materials is one of the problems Indonesian governments have while handling e-waste. This study aimed to outline the possibilities of producing electronic waste in Setu, Tangerang Selatan. Online surveys of respondents from households were used as the methodology, but just for appliances like refrigerators, air conditioners, televisions, laptops, and mobile phones. Since this problem becomes one of the most challenging parts of gaining the closest data to the actual waste stream, it is thought that this method is an effective way to gather the vast amounts of data required for the government to establish related policies. Fifty-two residences in Setu District, Tangerang Selatan City, were surveyed using a modified UNEP questionnaire. The study’s findings revealed that in terms of quantity-78 units produced as opposed to 244 units of the products listed-mobile phones are the most frequently produced electronic waste. Meanwhile, the refrigerator accounts for the most significant percentage of e-waste in terms of weight, or 40.93%. The findings of this study help policymakers create a formal e-waste management system by allowing them to calculate the amount of e-waste generated in Setu, Tangerang Selatan. Additionally, the approach used can be a valuable, user-friendly tool to produce the closest actual data that are typically required by the Ministry of Environment and Forestry, such as to develop a database that becomes a part of Sistem Informasi Pengelolaan Sampah Nasional (SIPSN) or National Waste Management Information System.
Green map application for supporting coastal eco-village development related to climate change mitigation-adaptation in Brebes Regency
Authors: Saraswati A A , Ihsan I M , Oktivia R , Anjani R , Aryantie M H , Amru K , Aji I S B , Nelva  
Published: June 2023

AbstractDynamic conditions in coastal areas require area management using the eco-village concept to accommodate all human interests while preserving the environment holistically. Brebes Regency, as one of the coastal areas in West Java with critical mangrove conditions, needs to identify all of the potentials in supporting eco-village development presented in the easiest way to be understood by communities. This study aimed to map the potential and recommend strategic management in the coastal area of Brebes Regency. The method used was descriptive qualitative through SWOT analysis and IFAS-EFAS calculations, and the results are presented as a green map. Based on the SWOT analysis results, Brebes Regency has the potential for eco-edutourism, mangrove conservation, micro, small, and medium enterprises development, fisheries, and community involvement. However, various problems were still found in the efforts to develop eco-villages. The results of the IFAS-EFAS calculation are in quadrant I, so the strategy recommendation is optimizing strengths to take advantage of available opportunities. The green map was made in accordance with the analysis results and can be used by the community to see, assess, and connect the potential in their regions. It has an impact on increasing community awareness and helps policymakers in determining policies.
Detecting the sensitivity of water content and deficiency rainfall during positive Indian Ocean Dipole events
Authors: Lestiana H , Utari P A , Saputra O F , Holidi  , Sari Q W 
Published: June 2023

Abstract
This study aimed to detect the water content in peatland and cropland associated with rainfall deficiencies and positive Indian Ocean Dipole (IOD) events. The condition of water content is a biological indicator of peatland ecosystems that commonly contributes to hot spots in Sumatra. The water content and rainfall data were processed using the spatial average at two study areas, and the variabilities were analyzed with the Indian Ocean Dipole index (DMI). From 2015 until 2020, this study employed the Dipole Mode Index to evaluate five positive IOD events. The analysis of the water content conditions and deficiency rainfall correlated to positive IOD events. In the peatland, the water content was a sensitive parameter, and even though the value decreased by a small amount, it potentially inflamed. Even if the water content was low in cropland areas, it did not trigger forest fires. The effect of rainfall deficiency was related to land response to water content conditions. Different land types will have different sensitivities. Understanding the correlation between deficiency rainfall with water content can be helpful for an early warning system.