Case Studies in Chemical and Environmental Engineering最新文献

{"title":"Tunable copper based slag catalyst for energy vectors production","authors":"Stefano Savino ,&nbsp;Giuseppe Guglielmo ,&nbsp;Riccardo Muolo ,&nbsp;Khaja Mohaideen Kamal ,&nbsp;Fiorenza Fanelli ,&nbsp;Giuseppe D'Amato ,&nbsp;Paolo Bollella ,&nbsp;Angelo Tricase ,&nbsp;Michele Casiello ,&nbsp;Rosella Attrotto ,&nbsp;Blaž Likozar ,&nbsp;Angelo Nacci ,&nbsp;Lucia D'Accolti","doi":"10.1016/j.cscee.2024.101050","DOIUrl":"10.1016/j.cscee.2024.101050","url":null,"abstract":"<div><div>Steel slag is known to contain various metal oxides and minerals that have the potential to function as green and sustainable catalysts for chemical reactions. Previous studies demonstrated that, albeit calcium aluminate is the major constituent, the presence of iron oxides enables the slag to function as photocatalyst for CO₂ reduction reaction (CO₂RR) to formic acid, and that doping with palladium improves these properties. In this new study, a novel and more versatile catalyst was prepared by functionalizing the slag with CuO nanostructures. The hybrid material (CuO-slag) was characterized by XRD, XPS, FESEM and SEM-EDX techniques, while electrochemical measurements certified its photocatalytic properties. Catalytic tests demonstrated that it is capable to convert CO₂ into formic acid in good yields (231 μmol gcat^-1 h^-1), but also to push reduction reaction up to methanol (81.5 μmol gcat^-1 h^-1) and ethanol (40 μmol gcat^-1 h^-1), the latter under photo-thermal conditions. Finally, to further extend the scope of the hybrid material, the hydrogen evolution reaction (HER) was also investigated.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"11 ","pages":"Article 101050"},"PeriodicalIF":0.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enrichment of patchouli alcohol in extracted patchouli oil from Pogostemon cablin benth leaves using supercritical carbon dioxide","authors":"Wahyudiono ,&nbsp;Ajeng Almira Tarisha Asri ,&nbsp;Pramudya Riandana Bhayu Gautama ,&nbsp;Sugeng Winardi ,&nbsp;Tadafumi Adschiri ,&nbsp;Motonobu Goto ,&nbsp;Siti Machmudah","doi":"10.1016/j.cscee.2024.101046","DOIUrl":"10.1016/j.cscee.2024.101046","url":null,"abstract":"<div><div>Essential oil has been extensively applied in various industrial applications for different purposes. In this work, essential oil from the cultivated <em>Pogostemon cablin</em> Benth in Malang, Indonesia was extracted by supercritical carbon dioxide (CO₂) method. The experiments were carried out in a semi batch-type process at various operating conditions (40−80 °C of temperatures and 10−20 MPa of pressures). The extraction time was 120 min, while the CO₂ flow rates were 3–5 mL/min. The gas chromatography mass spectrometry (GC-MS) indicated that the extracted patchouli oil comprises patchouli alcohol as a main substance. The results indicated that the supercritical CO₂ extraction method is to be superior compared with the hydrodistillation extraction method. By hydrodistillation extraction method, the extracted patchouli oil was around 0.52 %, while by supercritical CO₂ extraction method, the extraction yield increased significantly to 3.04 %. Besides the high extraction yield, the supercritical CO₂ extraction method also can give a high quality of patchouli oil extract.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"11 ","pages":"Article 101046"},"PeriodicalIF":0.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The production of leaf bokashi in pilot scale to support zero waste initiative of Universitas Syiah Kuala (USK), Indonesia","authors":"Irfan,&nbsp;Muhammad Afdhal,&nbsp;Afrudal,&nbsp;Muhammad Ikhsan Sulaiman,&nbsp;Dewi Yunita,&nbsp;Ismail Sulaiman","doi":"10.1016/j.cscee.2024.101045","DOIUrl":"10.1016/j.cscee.2024.101045","url":null,"abstract":"<div><div>This research aimed to study the effect of bran and husk addition in a pilot-scale leaf bokashi production to support the zero-waste initiative of Universitas Syiah Kuala (USK), Indonesia. The bokashi production was carried out in boxes with a capacity of 50 kg raw materials/box, at the waste bank (BSU) of USK. Bokashi was formulated with 70 % leaves, 20 % cow dung, and 10 % additional ingredients (bran or husk). The quality of the bokashi (bran added bokashi or B bokashi and husk added bokashi or H bokashi) was measured based on the total colony counts (TCC), most probable number (MPN), pH, C, N, C/N ratio, and descriptive organoleptic test. Both types of bokashi were applied to grow corn seeds in 500g-sized polybags and compared to soil media as well as leaf compost media produced by BSU. The test was carried out using a randomized design with one factor and ten replications. The study found that bokashi made with bran outperformed bokashi made with husk and leaf compost of BSU, meeting the Indonesian National Standard for compost quality (SNI 19-7030-2004), and supporting plant growth with improved height, biomass, and greener leaves in corn plants. This bokashi has a TCC of 1.1 × 10⁸ CFU/g, pH of 7.4, C/N ratio of 12.2, and very good descriptive properties (loose texture, earthy scent, and blackish color). This research effectively demonstrates a method that could support USK's zero-waste initiative.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"11 ","pages":"Article 101045"},"PeriodicalIF":0.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization and potential uses of municipal solid waste incineration remnants in San Andrés Islands – Colombia","authors":"C.A. Bedoya-Henao ,&nbsp;J.D. Carmona-Ramírez ,&nbsp;N. Betancur-Granados ,&nbsp;F.D. Cabrera-Poloche ,&nbsp;G.A. Viana-Casas ,&nbsp;O.J. Restrepo-Baena ,&nbsp;J.I. Tobón","doi":"10.1016/j.cscee.2024.101047","DOIUrl":"10.1016/j.cscee.2024.101047","url":null,"abstract":"<div><div>The incineration of municipal solid waste (MSW) has become a widely adopted option in various countries for waste management. The incineration process generates by-products such as fly ash, calcium salts, and bottom ash. These remnants exhibit a variable chemical and mineralogical composition depending on their origin and operational parameters, and they also have potential environmental impacts that restrict their final disposal or potential uses. In this study, we performed physical characterization, including particle size distribution (PSD) and bulk density measurements, alongside chemical and mineralogical analyses such as X-ray fluorescence (XRF), X-ray diffraction (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The material studied comprised incineration residues from municipal solid waste generated on San Andrés Island, Colombia. As the first municipal solid waste incineration plant in the country, the objective of this study was to gather relevant information necessary for its management and potential applications of their by-products. This study establishes the scientific basis for transforming these residues into valuable resources. Findings highlight their high potential for reuse in the manufacture of construction materials, facilitated by simple pretreatment processes such as size separation and grinding. Such applications could deliver significant environmental, social, and economic benefits by promoting sustainability and reducing waste. The results indicate that fly ash, predominantly composed of chlorine and Na₂O (∼70 wt%) mainly in form of non-diffracting phases, halite and sylvite, showing a potential use as a flux material. Calcium salts, containing 25.3 wt% CaO and 22.6 wt% chlorine, can serve either as a calcium-based raw material or as a flux. Meanwhile, bottom ash, with a high content of SiO₂, CaO, and Al₂O₃ (∼78.5 wt%), could be used as a partial replacement for aggregates in concrete or mortar after grinding and sieving. The quantification of amorphous content by Rietveld refinement was of great relevance in the research in order to evaluate the reactivity of the different incineration remnants. The presence of heavy metals, including lead, cadmium, and copper, underscores the necessity of implementing appropriate safety measures to mitigate potential risks to human health and the environment. This research not only provides critical insights into the management of incineration residues but also delivers valuable information to inform decision-making based on technical criteria for their reuse.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"11 ","pages":"Article 101047"},"PeriodicalIF":0.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapid SO2 gas removal using MgO/AC /CaCO3/Zeolite nanocomposite at room temperature","authors":"Ghobad Behzadi pour ,&nbsp;Maryam Kamel Oroumiyeh ,&nbsp;Leila Fekri aval","doi":"10.1016/j.cscee.2024.101042","DOIUrl":"10.1016/j.cscee.2024.101042","url":null,"abstract":"<div><div>The rising population and the expansion of urban areas are leading to heightened energy demands, which are predominantly met through fossil fuel sources. The operation of combustion facilities generates detrimental flue gases, thereby necessitating investigations into methods for controlling emissions to safeguard public health and protect the environment. The adsorbent method of removing pollutant gases involves selecting the proper material, preparation of the adsorbent layer, understanding adsorption mechanisms, contact time, and monitoring levels of pollutants. Various types of adsorbent materials are utilized, including active carbon (AC), zeolites, and metal oxides; each has different properties that affect the efficiency of pollutant removal. This research examined the MgO/AC/CaCO₃/Zeolite nanocomposite for SO₂ gas removal. The characterization of the adsorbent layer was conducted using X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) analysis techniques. The findings demonstrated a swift decline in SO₂ level, which decreased from 153 ppm to 15 ppm in a short time of 5 minutes. The MgO/AC/CaCO₃/Zeolite film can considerably remove the SO₂ gas with an efficiency of 92 % at room temperature. The adsorbent film exhibited an adsorption capacity of 133 mg g⁻¹ within 5 minutes. The results of this study provide important insights into the removal of SO₂ gas by using adsorption layers, demonstrating the potential of MgO/AC/CaCO₃/zeolite nanocomposites as effective materials for air pollution control. This nanocomposite can effectively reduce SO₂ with fast adsorption time. As air quality standards continue to be tightened around the world, innovative materials can play a significant role in reducing harmful emissions from industrial sources.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"11 ","pages":"Article 101042"},"PeriodicalIF":0.0,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile synthesis of nano-Si/graphite composites from rice husk for high performance lithium-ion battery anodes","authors":"Crystina Simanjuntak ,&nbsp;Sabarmin Perangin-angin ,&nbsp;Amru Daulay ,&nbsp;Suci Aisyah Amaturrahim ,&nbsp;Indah Revita Saragi ,&nbsp;Dilshad Hussain ,&nbsp;Arwadi Sinuraya","doi":"10.1016/j.cscee.2024.101038","DOIUrl":"10.1016/j.cscee.2024.101038","url":null,"abstract":"<div><div>The hydrothermal method is used to attach nano-Si to the surface of natural graphite to make a high-performance nano-si/graphite (nSi/G) composite. The nSi/G composites have been successfully made from rice husk using the hydrothermal method. The characterizations used XRD, XPS, SEM, TEM, and electrochemical measurements. The results of XRD showed that nano-Si shows 2θ at 28°, 47°, 56°, 69°, and 76° is the diffraction pattern of silica and carbon, respectively. XPS spectrum at nano-Si showed a spectrum at a binding energy of 97.6 eV and 101.2 eV, indicating Si–Si and Si–OH. SEM images on nano-Si show a spherical shape; graphite contains flakes, whereas nano-Si includes every flake on the graphite. The TEM images of the nano-Si particles were around 30–50 nm in diameter and aggregated due to the high surface energy. This composite is used in lithium-ion batteries. This component structure is good for improving the ability to store Li⁺ because the amorphous graphite layer surrounding the nano-Si has good electric conductivity and strong elasticity to help relax the strain caused by the electrochemical reaction of the Si during cycles. The specific capacity of the nSi/G composite is 3219 mAhg⁻¹, and after 200 cycles, it still has 98.36 % of its initial capacity. The electrochemical results indicate that Si–graphite composites derived from rice husks are viable candidates for high-capacity lithium-ion battery anodes, offering significant battery performance and scalability advantages.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"11 ","pages":"Article 101038"},"PeriodicalIF":0.0,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrodynamic characteristics of the microbubble dissolution in water using an ejector-type bubble generator","authors":"I.G.N.B. Catrawedarma ,&nbsp;Sefri Ton ,&nbsp;Dadang Dwi Pranowo ,&nbsp;Fredy Surahmanto","doi":"10.1016/j.cscee.2024.101043","DOIUrl":"10.1016/j.cscee.2024.101043","url":null,"abstract":"<div><div>This research uses an ejector bubble generator to determine water's flow structure and dissolved oxygen. The horizontal position of ejector, modified from conventional venturi, utilizes a gradual reduction in cross-section at the water inlet and contains air space before the mixing region. The bubble size distribution and the dissolved oxygen were measured experimentally, and empirical correlations were obtained from dimensional analysis, including the effect of Martinelli parameter. The characteristics of microbubble and volumetric mass transfer were investigated in the air flow range of 0.1–1.5 lpm and nozzle diameter of 1.17–3.50 mm. Bubble size distribution was obtained using image processing technique from a high-speed video camera, and dissolved oxygen was recorded using a polarographic dissolved oxygen meter. Based on the research variable, the air/water discharge ratio and nozzle diameter have a high impact on the bubble size with the power of 0.572 and 0.598 for bubble size correlation, respectively. They have power of −17.411 and 5.928 for oxygen transfer rate correlation, respectively. It shows that the air/water ratio and nozzle diameter significantly affect the bubble size and oxygen transfer rate.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"11 ","pages":"Article 101043"},"PeriodicalIF":0.0,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Emerging trends in tackling microplastics in wastewater systems: Insights from a global research perspective","authors":"Motasem Y.D. Alazaiza ,&nbsp;Tharaa M. Alzghoul ,&nbsp;Mohammed J.K. Bashir ,&nbsp;Madhusudhan Bangalore Ramu ,&nbsp;Salem S. Abu Amr ,&nbsp;Mohammad F.M. Abushammala","doi":"10.1016/j.cscee.2024.101041","DOIUrl":"10.1016/j.cscee.2024.101041","url":null,"abstract":"<div><div>Microplastics (MPs) represent a critical environmental challenge in wastewater systems, posing significant risks to aquatic ecosystems and human health. This bibliometric study aims to comprehensively map the research landscape of MPs in wastewater by analyzing 2255 publications from the Scopus database between 2009 and 2024. The findings reveal a substantial increase in research output, peaking at 539 studies in 2024, which underscores a growing global concern regarding the environmental impacts of MPs. China emerges as the leading contributor with 722 articles and 29,433 citations, while \"Environmental Science\" is identified as the predominant discipline, accounting for 44.2 % of the studies. \"Water Research\" is the most prolific journal in this field, contributing 139 publications and 15,844 citations. The analysis identifies key types of MPs present in wastewater, including polystyrene, polyethylene, and polyethylene terephthalate (PET). Common analytical methods for detecting these pollutants include FTIR and Raman spectroscopy, which are essential for their characterization. The study highlights critical issues, such as the ecological implications of plastic pollution, the role of MPs in antibiotic resistance, and their transport mechanisms through wastewater systems. Major treatment methods identified include activated sludge and anaerobic digestion, while innovative strategies like adsorption and biochar utilization are emphasized as vital for enhancing treatment effectiveness. Notably, the findings reveal a disparity between publication volume and citation impact, exemplified by influential authors like Browne M.A., who, despite fewer publications, have garnered significant recognition. The study also points to emerging research opportunities, including the need for improved risk assessment methodologies and enhanced monitoring techniques for MPs.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"11 ","pages":"Article 101041"},"PeriodicalIF":0.0,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biodegradable PLA/HEC-ZNO Nanocomposite for corrosion protection of ASTM A36 steel: A combined quantum and electrochemical analysis","authors":"Johny W. Soedarsono ,&nbsp;Andoko Andoko ,&nbsp;Kuncoro Diharjo ,&nbsp;Femiana Gapsari ,&nbsp;Sanjay Mavinkere Rangappa ,&nbsp;Suchart Siengchin","doi":"10.1016/j.cscee.2024.101039","DOIUrl":"10.1016/j.cscee.2024.101039","url":null,"abstract":"<div><div>The corrosion of ASTM A36 steel in acidic environments poses a critical industrial issue, prompting the need for sustainable inhibitors. This study develops a biodegradable PLA/HEC nanocomposite enhanced with ZnO nanoparticles as an inhibitor. Its performance was evaluated using quantum analysis and electrochemical tests, including Tafel polarization and EIS. Quantum analysis showed ZnO enhances electron donation and acceptance for corrosion protection, while electrochemical findings showed PLA/HEC nanocomposite with 0.05 wt% ZnO achieved 93.98 % inhibition efficiency. PLA/HEC-ZnO nanocomposite has potential for sustainable corrosion protection in steel infrastructure, with future exploration focusing on long-term performance, economic feasibility, and practical application testing. This eco-friendly approach integrates quantum and electrochemical insights to optimize corrosion protection.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"11 ","pages":"Article 101039"},"PeriodicalIF":0.0,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The economic valuation of environmental damages in scenarios of tailings dams' ruptures: The case of Brumadinho's catastrophe, Minas Gerais, Brazil","authors":"Lucimar de Carvalho Medeiros ,&nbsp;Maíse Soares de Moura ,&nbsp;Luís Filipe Sanches Fernandes ,&nbsp;Adriana Monteiro da Costa ,&nbsp;Fernando António Leal Pacheco","doi":"10.1016/j.cscee.2024.101037","DOIUrl":"10.1016/j.cscee.2024.101037","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Qualifying and quantifying the value of environmental damages that have affected a particular region following a catastrophic event is not always an easy task, because some damages are perceived in the short-term and others can only manifest themselves after many years. Expressing the environmental damage through mathematical formulas is even more difficult to undertake, because some damages can be easily measured and others can be more complex to scale. When it comes to environmental damages caused by tailings dams bursts, the task of estimating their economic value becomes even more complicated considering the multiplicity of factors involved and the length of time they remain at the affected sites. Despite all these uncertainties, the allocation of a monetary compensation to those responsible for the damage is a public duty, so the development of credible and fair methodologies for the economic valuation of environmental damages is a mandatory challenge. With this in mind, in order to financially measure events that promote environmental degradation, we proposed the EVED methodology – Economic Valuation of Environmental Damages, inspired on the standard VERA – Economic valuation of environmental resources. The novelty of EVED is that it moves the focus from valuating the environment based on the classification of features' “use” or “no-use”, to valuating the environment based on the recovery and repair time scale. The tested site was the Ribeirão Ferro-Carvão watershed located in the municipality of Brumadinho, state of Minas Gerais, Brazil, which has been affected by the collapse of B1 tailings dam of Vale, S.A. mining company, in 2019. The valuation of environmental damages was restricted to the natural vegetation of Atlantic Forest biome impacted by the tailings' mudflow. The results revealed losses of ecosystem services amounting to R$ 163,641,289.5, and costs to repair (clean) the affected areas (valley and banks of Ribeirão Ferro-Carvão) amounting to R$ 571,346,957.9. These results increased previous estimates, but were considered more realistic since this study took into account the value of affected ecosystem services as well as the value of direct costs related to the removing of tailings from the affected sites, combined with the effect of time on these values, something that was not previously the case. It was therefore concluded that the EVED methodology provides a realistic framework for the financial amounts to be imputed to mining companies as monetary compensation related to the collapse of tailings dams. It should be noted that the study has valued the damage related to the impact of B1 dam collapse on the natural vegetation of Ribeirão Ferro-Carvão's channel and banks, meaning that it does not represent a comprehensive analysis of environmental damages caused by the disaster, which would naturally have to include damages related to the degradation of soil, air and water, among other compartments. It should also be s","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"11 ","pages":"Article 101037"},"PeriodicalIF":0.0,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}