Environmental Quality Management最新文献

{"title":"A Comparative Study of GO/TiO2/SiO2 Catalysts for the Photocatalytic Degradation of Methylene Blue and Phenolic Compounds","authors":"Abeer Adaileh,&nbsp;Ahmed Abu-Rayyan,&nbsp;Anas Khasawneh,&nbsp;Waed Alahmad","doi":"10.1002/tqem.70058","DOIUrl":"https://doi.org/10.1002/tqem.70058","url":null,"abstract":"<div>\u0000 \u0000 <p>This study scrutinizes the photodegradation efficacy of methylene blue (MB) and selected phenolic compounds, emphasizing variables such as pH, catalyst dosage, and initial pollutant concentration. Employing a GO/TiO₂/SiO₂ composite (NC-II) composed of 50:50% TiO₂ and SiO₂, the research identifies NC-II as the optimal catalyst, achieving up to 100% degradation of MB under ideal conditions (0.5 ppm initial concentration, pH 10). For MB degradation, maximal rates were recorded under alkaline conditions (pH 8–10), with NC-II reaching up to 84.6% degradation at pH 10, surpassing the 46.5% observed for NC-I and 37.7% for NC-III at the same pH level. Results also indicate that an increase in catalyst dosage up to 0.3 g enhances degradation rates, with NC-II achieving 63.7% degradation at this dosage, in contrast to 17.8% for NC-I and 53.1% for NC-III. In the case of phenolic compounds, degradation efficiencies varied between 55% and 86%, with NC-III demonstrating the highest photodegradation capability, achieving up to 86% degradation for Bisphenol A at a 0.3 g dosage. The degradation of 4-chlorophenol and phenol was more pronounced at a neutral pH (5–6), with zero-order kinetics producing superior regression coefficients (<i>R</i>² = 0.91–0.99) compared to pseudo-first-order models. Moreover, NC-II maintained over 80% degradation efficiency across five reusability cycles, underscoring its durability and minimal decline in performance. This study substantiates the efficacy of TiO₂:SiO₂ composites as cost-effective, high-performance catalysts suitable for diverse environmental conditions, where adjustments in pH and catalyst dosage can further refine photodegradation efficiency across different pollutant types.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":"34 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal Variations in Water Quality and Microplastic Contamination in the Surma River, Bangladesh: Implications for Aquatic Health and Human Safety","authors":"Md Abdullah Al Mamun Hridoy,&nbsp;Puspendu Biswas Paul,&nbsp;Md Nabid Hashar,&nbsp;Tarin Tabaschum,&nbsp;Reashan Ujjaman,&nbsp;Md Shakil Khan,&nbsp;Md Asaduzzaman Rasel,&nbsp;Md Musfikur Rahman,&nbsp;Ekram Mahmud Anik,&nbsp;Md Azharul Haque Shakil","doi":"10.1002/tqem.70055","DOIUrl":"https://doi.org/10.1002/tqem.70055","url":null,"abstract":"<div>\u0000 \u0000 <p>Water quality parameters (WQPs) are an important aspect of a significant role in addressing the issue of aquatic animals and human health hazards. There is increasing concern that some microplastics (MPs) are being disadvantaged and directly affected by aquatic organisms and potential health risks. Research has consistently shown that physiochemical parameters are lacking in the Surma River. This study examines the seasonal fluctuations in water toxicology and the effects of MPs on freshwater ecosystems in the Surma River. Data were gathered from three locations during the monsoon, winter, and summer seasons of 2023–2024 at 4-month intervals. The analysis revealed concerning WQPs, water quality index (WQI), and pollution index values, indicating serious threats to aquatic life. FTIR microscopy detected MPs, with fibers being the most common (55%), followed by fragments (28%), films (10%), and foam (6%). The highest pH recorded was 8.44 at Station 1 during the summer, while the lowest pH fell to 7.02 in winter. Station 3 exhibited the lowest WQPs, reaching a minimum of 0.15 in winter. The monsoon season showed the most pronounced changes, with heightened pollution levels due to flooding, which diminished habitat suitability. The presence of MPs adds complexity to water quality by introducing harmful pollutants that accumulate in fish, threatening both aquatic ecosystems and human health. These results highlight the critical need for robust water quality management strategies and further research into the ecological and health effects of MPs in freshwater environments. This study enhances our understanding of the seasonal variations in water toxicity and the contribution of MPs to water pollution.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":"34 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143380494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Organizational Maturity Applied to Food Industries: A Case Study","authors":"Ângela Regina Souza Santos,&nbsp;Renata Maciel de Melo,&nbsp;Thárcylla Rebecca Negreiros Clemente,&nbsp;Simone Machado Santos","doi":"10.1002/tqem.70053","DOIUrl":"https://doi.org/10.1002/tqem.70053","url":null,"abstract":"<div>\u0000 \u0000 <p>This study applied an organizational maturity assessment model to the food industry, based on integrated technical standards, encompassing environmental management (ISO 14001), quality management (ISO 9001), and food safety (ISO 22000). The central focus was to investigate the involvement of companies in implementing and advancing the integrated management system (IMS) within the food industry. The model has five maturity levels and provides a framework to help understand and link maturity levels with companies’ development stages. The proposed model offers targeted guidelines for selecting appropriate strategies to achieve an evolutionary, productive, practical, and consistent level of organizational maturity within the IMS. This approach affords a preventive perspective and the integration of sustainable practices, emphasizing continuous improvement. The study provides diagnostic tools to identify different management phases, facilitating the selection of “drivers” that effectively support the development of a sustainable and efficient IMS. Validation of the model was successful when it showed a maturity level of 4.5 (out of 5.0) for the company with the highest number of certifications. This outcome highlights the need to establish a culture oriented toward continuous improvement and employee engagement.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":"34 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revealing the Hidden Potential of Ultraviolet (UV)-C Irradiation for Controlling Aquatic Toxicity Caused by Harmful Algal Blooms","authors":"Lekhani Bisht,&nbsp;Debasis Mitra,&nbsp;Naveen Chandra Joshi,&nbsp;Harish Chandra Joshi,&nbsp;Prateek Gururani","doi":"10.1002/tqem.70052","DOIUrl":"https://doi.org/10.1002/tqem.70052","url":null,"abstract":"<div>\u0000 \u0000 <p>Harmful algal blooms (HABs) pose a significant threat to freshwater, brackish, and marine habitats. HABs have numerous harmful impacts, such as the creation of odorous compounds, disinfection byproducts, and the release of toxic substances. Various physical, biological, and chemical techniques have been attempted to prevent blooms. However, the bulk of HABs management methods currently in use concentrate on emergent removals; as a result, these methods are usually less effective because they are immobile. Ultraviolet (UV) irradiation has gained lots of attention lately as a possible remedy for lowering HABs. In this review paper, we have combined the recent information about various toxic effects of algal blooms, UV-C irradiation (UV-C irradiation), starting from the other methods used for the removal of HABs, continuing with the UV-C facilities, particularly flow-through reactors, enabling the development of shipborne UV-C facilities, and the practical way through which the UV-C irradiation technique was made in use to remove HABs. Further, including the mechanism, suppression factors, application of the UV-C technique, and algal growth recovery. The effects of UV-induced damage on nucleic acid, the photosynthesis system, settleability, cell integrity, and oxidative pressure were responsible for the suppression effects on algal cell density. The suppression factors to which attention needs to be paid are humic acid, salinity, turbidity, nitrate, and pH.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":"34 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing Soil Quality and Biomass Productivity Under Wastewater Irrigation in the Indian Arid Region","authors":"Genda Singh,&nbsp;Prem Raj Nagora,&nbsp;Parul Haksar,&nbsp;Shubhi Kulshrestha,&nbsp;Abha Rani","doi":"10.1002/tqem.70051","DOIUrl":"https://doi.org/10.1002/tqem.70051","url":null,"abstract":"<div>\u0000 \u0000 <p>Indiscriminate discharge of effluents in rivers, waterbodies, and croplands is a common practice contaminating food chains through water and soil. Plantations using treated wastewater can help restore degraded lands and reduce soil and environmental pollution. One-year-old plantations of <i>Azadirachta indica, Eucalyptus camaldulensis, Prosopis cineraria, Prosopis juliflora, Tamarix aphylla, Salvadora persica</i>, and <i>Salvadora oleoides</i> were irrigated with borewell water at ½ET (Evapotranspiration, I₁) and treated wastewater at ½ET (I₂), ¾ET (I₃), and 1ET (I₄) for 4 years (September 2013–September 2017), to assess the remedial impact of these species on soils while reusing wastewater in urban greening and biomass production. Wastewater irrigation enhanced soil pH/EC (&lt;1.0 unit) and SOC and nutrient contents (1.23–13.25-fold). Such increases were highest (<i>p</i> &lt; 0.05) in 0–15 cm and lowest in 45–60 cm (50%–70%) soil layers. Species types and irrigation levels influenced soil salts and nutrient concentrations. Variations in pH/EC (&lt;0.50 unit), SOC/nutrient contents (1.59–2.11-fold), and total biomass (3.26-fold) were greater between species than between irrigation levels (&lt;0.30 unit, 1.14–3.33-fold and 1.81-fold variations, respectively). Salt and nutrient uptake were highest in <i>S. oleoides</i> and <i>P. cineraria</i>, medium in <i>T. aphylla</i> and <i>E. camaldulensis</i>, and lowest in <i>S. persica</i>, <i>A. indica</i>, and <i>P. juliflora</i> plots. Leaf mineral contents were below toxic levels. The former three species and <i>S. persica</i> responded by increasing biomass allocation to roots. In contrast, other species maximized root biomass to augment added water and nutrient uptake to sustain growing biomass. Conclusively, tree species influenced soil properties and biomass more notably than irrigation level, where adaptation mechanisms were allocated to/or maximized root biomass. Increased SOC and nutrients, and consequently plant biomass highlight the reuse of treated wastewater in plantations that remediated soil and promoted greenery and biomass in water-deficient dry areas.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":"34 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A State-of-the-Art Review on Effectiveness of Geopolymer Technology Toward Dye Degradation, Heavy Metal Encapsulation and Its Future Prospects on Environmental Remediation","authors":"Siva Shankari SV,&nbsp;Sivasakthi M","doi":"10.1002/tqem.70054","DOIUrl":"https://doi.org/10.1002/tqem.70054","url":null,"abstract":"<div>\u0000 \u0000 <p>Geopolymers are an innovative class of environmentally friendly materials gaining significant attention in construction, materials science, and sustainable technology. As alternatives to traditional cement-based materials, geopolymers exhibit unique mechanical properties suitable for various construction applications, including use as construction materials, coating materials, and high-temperature-resistant materials. Notably, geopolymers can effectively adsorb heavy metals, dyes, and radioactive pollutants, offering substantial environmental benefits. This review paper explores the process and mechanism of geopolymerization, as well as the application of geopolymers in the treatment of contaminants. It details how aluminosilicate precursors contribute to the photocatalytic degradation of dyes, examining the role of different raw material sources, types of activators or additives used, and preparation methods. This paper highlights the effectiveness of geopolymers in dye degradation, providing insights into the underlying mechanisms. Additionally, the review delves into the interaction of geopolymers with heavy metals through mechanisms such as chemisorption, complexation, adsorption, ion exchange, intraparticle diffusion, and the solidification of heavy metals within the geopolymer matrix. This comprehensive analysis of existing research aids researchers in understanding the capabilities and limitations of geopolymer materials in environmental remediation. Beyond waste reduction, the review addresses the broader environmental impact of geopolymers, particularly their potential for reducing the carbon footprint compared to traditional cement. This aspect is crucial for evaluating the overall sustainability of geopolymers. Furthermore, the paper emphasizes the importance of life cycle durability assessments (LCA) to evaluate the ecological footprint of this eco-friendly concrete throughout its lifetime, from raw material to end-of-life disposal. LCA provides a complete perspective on the sustainability of geopolymers, guiding future research and applications in sustainable construction. By synthesizing current research on geopolymers, this review paper serves as a valuable resource for researchers in geopolymer technology, offering insights into future research directions and potential applications.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":"34 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143111341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green Human Resource Management (GHRM) and Corporate Social Responsibility (CSR) in Reducing Carbon Emissions for Sustainable Practices","authors":"Dewi Puspaningtyas Faeni,&nbsp;Retno Fuji Oktaviani,&nbsp;Hosam Alden Riyadh,&nbsp;Ratih Puspitaningtyas Faeni,&nbsp;Baligh Ali Hasan Beshr","doi":"10.1002/tqem.70048","DOIUrl":"https://doi.org/10.1002/tqem.70048","url":null,"abstract":"<div>\u0000 \u0000 <p>This study aims to explore the positive influence of green human resource management (GHRM) and corporate social responsibility (CSR) implementations on carbon emission reduction as an environmental control strategy in the transportation industry. This study is descriptive in nature and employs a quantitative approach. We derived the study's data from a literature analysis and collected primary data from 1080 CSR employees in the transportation industry using questionnaires. The results suggest that the application of the GHRM concept in the transportation sector contributes to a paradigm shift among employees toward ecological sustainability. To emphasize the environmental conservation and management approach, CSR initiatives include planting trees and mangroves, implementing 3R, water villages, community empowerment, renewable energy, and other initiatives. To reduce plastic use and improve waste segregation, COVID-19 compelled all enterprises to implement a paperless policy and embrace the green transportation concept, thereby mitigating environmental impact. Maintaining a green culture at work is one way to recognize and thank staff members who consistently contribute to solving environmental problems, particularly those related to reducing carbon emissions. Moreover, the novelty of this study is that a holistic approach—combining green HRM, CSR, and operational changes—can foster a sustainable workforce and achieve environmental goals in the transportation sector. This research provides valuable insights for policymakers, managers, and academics interested in driving ecological sustainability through strategic human resource management and CSR initiatives.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":"34 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Decolorization of Basic Violet 14 Dye Wastewater and Its Phytotoxicity Assessment: A Green Approach","authors":"Ritu Sharma,&nbsp;Poonam Sharma,&nbsp;Naveen Kumar,&nbsp;Neeraj K. Aggarwal","doi":"10.1002/tqem.70050","DOIUrl":"https://doi.org/10.1002/tqem.70050","url":null,"abstract":"<div>\u0000 \u0000 <p>Dye-polluted wastewater poses significant health risks and necessitates effective management techniques to mitigate its environmental and biological impact. Industrialization, particularly in the textile sector, has led to widespread water pollution as untreated or inadequately treated industrial effluents, rich in toxic synthetic dyes, are discharged into water bodies. These pollutants are not only harmful to aquatic ecosystems but also pose serious risks to human health due to their carcinogenic properties. Addressing this challenge, the current study investigates the use of a bacterial strain, <i>Bacillus subtilis</i>, to degrade the persistent and carcinogenic dye, basic violet 14, found in industrial wastewater. Initial experiments using the one-factor-at-a-time approach resulted in ∼74% decolorization, which was significantly improved to 84.40% through the use of response surface methodology and the Box-Behnken design. Under optimal conditions (dye concentration 100 mg/L, temperature 32.5°C, pH 7, inoculum size 10% v/v), the bacterial treatment was highly effective. Advanced techniques like UV-Visible spectroscopy and FTIR were employed to assess the structural changes in the dye post-treatment. Additionally, a phytotoxicity assay demonstrated the treated water's potential for safe reuse in agriculture, highlighting this bacterial strain's promise as a sustainable bioremediation agent for dye-polluted wastewater, benefiting both the environment and industries.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":"34 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable Practices for Diminishing Nitrate Leaching","authors":"Nasrin Gharahi,&nbsp;Rasool Zamani-Ahmadmahmoodi","doi":"10.1002/tqem.70032","DOIUrl":"https://doi.org/10.1002/tqem.70032","url":null,"abstract":"<div>\u0000 \u0000 <p>Investigating the factors affecting water and salt movement in the soil and utilizing new amendments, such as mineral nanoparticles and biochar, can significantly contribute to proper land management and reduce nitrate (NO₃^–) leaching, thus preventing groundwater pollution. This study aimed to investigate the effects of mineral nanoparticles and biochar derived from wheat residues on NO₃^– leaching from the soil and soil particle stability. The treatments used in this study included three treatments: nanozeolite, nanoclosite, and biochar, each at two levels (10 and 50 g/kg of soil, 1% and 5% w/w) and a control treatment. The duration of the experiment and the amount of fertilizer added to the soil columns matched the corn cultivation period. Nitrate fertilizer containing 46% pure nitrogen was used to introduce NO₃^– into the soil columns. The irrigation of the soil columns was performed by weighing the lost water from the control soil column. Compared with those in the control sample, the amount of NO₃^– leached from the soil columns in the 10-g biochar, 10-g nanozeolite, and 10-g nanoclosite treatments significantly decreased. Additionally, the amount of NO₃^– leached from the soil columns in the 50 g biochar, 50 g nanozeolite, and 50 g nanoclosite treatments significantly decreased compared to that in the control sample. Throughout all weeks of the experiment, the 50 g biochar treatment had the lowest NO₃^– leaching compared to the 50 g nanozeolite and 50 g nanoclosite treatments. Additionally, increasing the use of nanozeolite and nanoclosite enhances the stability of soil particles and decreases NO₃^– leaching from the soil columns, resulting in reduced groundwater contamination with NO₃^–.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":"34 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on the Integrated Analysis of Water Quality and Spatial-Temporal Changes in Qionghai Lake","authors":"Kai Su,&nbsp;Qin Wang,&nbsp;Yingwei Xi,&nbsp;Zhongshan Peng,&nbsp;Guizhi Li","doi":"10.1002/tqem.70045","DOIUrl":"https://doi.org/10.1002/tqem.70045","url":null,"abstract":"<div>\u0000 \u0000 <p>This paper used data from 2019, 2020, and 2021 to assess the water quality of Qionghai Lake using the traditional and improved Nemerow pollution index methods. To analyze the pattern of change in water quality between different Qionghai monitoring sections, a spatial-temporal change rate calculation was conducted. According to the traditional Nemerow pollution index method, assessment results for 2019, 2020, and 2021 show that Qionghai as a whole, along with the Qinglong Temple water quality monitoring section, the Qionghai Hotel, and the lake center, all had Class I, superb water quality. However, Qionghai's water level was Class I in 2019 and 2021, according to the results of the improved Nemerow pollution index method, while the water quality assessment for 2020 showed that the water quality was Class II, with good but inconsistent water quality across the 3 years. From 2019 to 2020, the overall lake quality and the water quality of the lake center, Qionghai Hotel, and Qinglong Temple section have all experienced a significant decline of more than 20%. In 2021, there will be more than 20% substantial improvement in water quality. Qionghai Hotel experienced a slight decline of 10% to 20% in 2019 and a sharp deterioration of more than 20% in 2020. There was no significant difference in water quality changes between Qionghai Hotel and the Qinglongsi section between 2019 and 2020, and the change range was less than 10%.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":"34 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}