Environmental Quality Management最新文献

{"title":"The Potential of Elephantorrhiza goetzei Seed Extract as a Coagulant for Household Drinking Water Treatment","authors":"Denzil Diver,&nbsp;Innocent Nhapi,&nbsp;Walter Ruziwa,&nbsp;Hongtao Wang,&nbsp;Fengting Li","doi":"10.1002/tqem.22309","DOIUrl":"https://doi.org/10.1002/tqem.22309","url":null,"abstract":"<div>\u0000 \u0000 <p>Poor access to adequate, clean, and safe water is one of the greatest world problems people encounter. There has been considerable attention in recent times toward the use of natural coagulants for water treatment. This study seeks to promote this by investigating the potential of <i>Elephantorrhiza goetzei (E. goetzei)</i> seed extract as natural coagulants for water treatment. This included the determination of key ingredients responsible for the coagulation process and optimal dosages for the removal of turbidity, fluoride, manganese, and iron. The residual content of organic matter in the treated water and the quality of sludge produced were also investigated. The methodology consisted of a proximate analysis procedure to investigate the active ingredient(s) responsible for coagulation and standard jar tests. Standard methods were used for the analyses. Coagulant dosages ranging from 0 to 300 mg/L at a rapid mixing speed of 120 rpm for 1 min, a slow mixing speed of 30 rpm for 15 min, and a settling time of 15 min were used for the jar test. The analysis of variance (ANOVA) using IBM SPSS Version 20 was conducted, and regression models were developed to determine the effect of coagulant dosage on turbidity, pH, total dissolved solids, fluoride, iron, manganese, chemical oxygen demand (COD), nitrogen, and phosphorus. The results obtained from the proximate analysis of <i>E. goetzei</i> seed extract show that values of 5.25%, 21.40%, 8.23%, 32.99%, 2.20%, and 29.93% were obtained for moisture, crude protein, crude fiber, fat, ash, and carbohydrate content, respectively. Moreover, seed extract of <i>E. goetzei</i> achieved removal efficiencies up to 94.8%, 50.1%, 90.0%, and 53.9% for turbidity, fluoride, iron, and manganese in water, respectively. The coagulant has the potential to achieve the desired World Health Organization (WHO) drinking water standards for turbidity, fluoride, iron, and manganese. The COD increased from 55.3 to 419.3 mg/L as the coagulant dosage increased from 0 to 100 mg/L. This could cause an unwanted rise in microbial activities, affecting the microbiological quality of the treated water. The total nitrogen and phosphorus concentrations obtained in the sludge at 100 mg/L were 0.343 and 0.194 µg/kg, respectively, and this compromises its attractiveness for agricultural reuse purposes.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142013481","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":"Dye Removal From Tannery Wastewater Utilizing Footwear Waste: A Sustainable Approach","authors":"Saidur Rahman Shakil,&nbsp;Adhir Chandra Paul,&nbsp;Md. Abdulla-Al-Mamun,&nbsp;Sainik Roy Thirtho,&nbsp;Mustafizur Rahman Naim","doi":"10.1002/tqem.22310","DOIUrl":"https://doi.org/10.1002/tqem.22310","url":null,"abstract":"<div>\u0000 \u0000 <p>Waste-to-3R (reduce, reuse, and recycle) is a promising mass balance approach in the leather sector for addressing the current challenge of overproduction of rubber sole waste in the footwear industry and dye pollution in tanneries. In this study, low-cost charcoal derived from discarded natural rubber (NR) soles was effectively employed to remove anionic and cationic dyes from a model tannery dye solution, aligning with mass balance approaches in the leather sector. Discarded rubber charcoal (DRC) was prepared at 350°C using a self-fabricated pyrolytic cell. The resulting charcoal was then dried, ground, and separated through 40-mesh size lab-scale sieves, and it was subsequently employed for the removal of dyes from tannery wastewater. The dye removal performance was optimized by adjusting parameters such as dosage, pH, contact time, and concentration. The maximum adsorption capacity and removal efficiency of the anionic acid dye (AD) were found to be 158.22 mg/g and 88.39% at pH 1, respectively, while those of the cationic methylene blue dye were 166.18 mg/g and 85.53% at pH 12, respectively, between 15 and 30 min, depending on the DRC conditions. Fresh charcoal and dye-loaded charcoal were characterized through Fourier transform infrared spectroscopy, x-ray diffraction, Brunauer–Emmett–Teller, scanning electron microscope (SEM), and transmission electron microscope with Energy-Dispersive X-ray (EDX) Spectroscopy for respective functional groups and morphology studies, and zeta potential measurements were employed to characterize the charcoal surface charge. The SEM image revealed that the shape of the DRC particles resembles a honeycomb structure, with an average size of 573.56 µm. The adsorption kinetic study indicates that the Freundlich isotherm model and pseudo-second-order kinetics were well-fitted for dye removal in this study. The charcoal exhibited robust stability, retaining its capacity of 57.42 mg/g of AD and 44.94 mg/g of MB dye after four reuse cycles. This resilience was observed in treatment with various desorption agents, including HCl, CH₃COOH, NaOH, and C₂H₅OH. The findings of this study suggest that NR-derived charcoal could be used as a successful substitute for commercial activated carbon in wastewater treatment to get rid of the acid and basic dyes of the leather industry. Based on the observed results, a plausible mechanism was also proposed.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142013482","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":"Multifaceted Characteristics of Biochar and Its Implementation in Environmental Management in a Sustainable Way","authors":"Deepak Rao,&nbsp;Priyadarshani Rajput,&nbsp;Ravish Choudhary,&nbsp;Sangita Yadav,&nbsp;S. K. Yadav,&nbsp;Vishnu D. Rajput,&nbsp;Tatiana Minkina,&nbsp;Sezai Ercisli,&nbsp;Slavica Matić","doi":"10.1002/tqem.22305","DOIUrl":"https://doi.org/10.1002/tqem.22305","url":null,"abstract":"<div>\u0000 \u0000 <p>Biochar (BC), a carbon-dense substance created through the pyrolysis of organic biomass, has garnered considerable interest as a promising option for sustainable mitigation methods. A comprehensive examination of the diverse attributes of BC and its implications for addressing contemporary environmental issues while fostering sustainable practices is compiled in this review. The synthesis techniques and structural attributes of BC are scrutinized initially, emphasizing its remarkable features such as broad surface area, porosity, and active sites. These characteristics of BC are conducive to myriad environmental applications, including pollutant remediation, soil health enhancement, and carbon sequestration. Subsequently, this review delves into the mechanisms underlying BC's effectiveness in environmental remediation. BC exhibits augmented adsorption capacities, catalytic functionalities, and interactions with microorganisms, facilitating the removal of contaminants from different matrices of the environment. Recently, BC and their products such as nano-BC have gained widespread recognition as a feasible option for sustainable carbon material. Fabrication, characterization, modification, and diverse applications of BC were also discussed in detail. Its integration into agriculture holds promise for enhancing soil organic matter, augmenting production, and mitigating gas emissions, thereby contributing to food security and climate change mitigation. In conclusion, BC and nano-BC emerge as a promising avenue for addressing environmental challenges and advancing sustainable development objectives. However, further research is warranted to optimize synthesis methodologies, elucidate long-term environmental implications, and facilitate scalable production for widespread adoption.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141991586","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":"Toward Sustainable Groundwater Management: A Comprehensive Framework for Resource Protection and Utilization","authors":"Zaina Hussein Mseli,&nbsp;Gaduputi Sankaranna,&nbsp;William John Mwegoha","doi":"10.1002/tqem.22308","DOIUrl":"https://doi.org/10.1002/tqem.22308","url":null,"abstract":"<div>\u0000 \u0000 <p>This paper presents a comprehensive framework for the sustainable management of groundwater resources in the Makutupora basin, Dodoma, Tanzania. The framework was developed through a systematic four-phase methodology. Phase I involved a literature and document review to generate foundational insights. Phase II comprised a review of existing conceptual frameworks to identify best practices. Phase III included primary data collection through interviews, focus groups, and stakeholder surveys to understand current challenges and capacities. Phase IV involved synthesizing the findings to develop the proposed management framework. The framework includes a nested, multi-scale structure with four hierarchical levels, overarching goals, primary management functions, specific operations, and subordinate tasks. It was informed by sustainability Principles and Intergrated Water Resources Mangagement concepts. The framework facilitates coordinated planning and implementation across relevant organizations through well-defined roles and regular monitoring/evaluation. Key functions address resource assessment, regulatory compliance, stakeholder participation, financing, and capacity development. Validation by subject matter experts strengthened the framework's grounding in evidence and enhanced its implementation, adaptability, and long-term sustainability. The final framework is envisioned as a dynamic decision support tool to address the complexities of groundwater utilization, protection, and conservation in an equitable, adaptive manner for current and future generations.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141980214","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":"Water Contaminant Detection and Water Purification of Household Drinking Water Using a New Stacking Ensemble Model","authors":"Yernagula Rajesh,&nbsp;Manasa Dwarampudi,&nbsp;Y. Pratap","doi":"10.1002/tqem.22302","DOIUrl":"https://doi.org/10.1002/tqem.22302","url":null,"abstract":"<div>\u0000 \u0000 <p>Contaminated drinking water sources pose a significant health risk worldwide. Monitoring programs for drinking water quality aims to ensure safe water supply by informing management practices. Improved online monitoring of water systems is necessary as current lab-based methods are slow and do not offer real-time public health protection. Rapid detection and response to potential contamination events are crucial to mitigate health risks. Mark of-purpose water treatment strategies offer a reasonable method for upgrading drinking water quality at the family level and forestalling waterborne illnesses. This study focuses on collecting household drinking water and utilizing various sensors to measure parameters such as pH, turbidity, water level, temperature, and humidity. A consistent water quality noticing system using the stacking outfit model, which solidifies Bayesian association and decision tree techniques, is proposed in this article. Bayesian network analyzes the input data attained from sensors collecting real-time data and concludes whether the data represents the contamination event. DTs are utilized to demonstrate the connections between multivariate water boundaries utilized in the review. Afterward, a multiobjective, such as a biobjective optimization model and a nondominated genetic algorithm (NGA) are used in this work of optimization to minimize the volume of contaminated water. After the pollution in the water is identified, water decontamination processes are done given point of purpose medicines like ceramic channels and solar water disinfection (SODIS). The method outlined is executed through Python software. The findings indicate that the estimated values for PH, temperature, and turbidity are 7.3, 31.8, and 0.77, respectively. However, the proposed method is compared with the existing C-NSGA-II, while compared to this method, the proposed system produces improved cost functions. Consequently, suitable water treatment and supply should be considered to reduce the effects on people's health as well as to improve living conditions, respectively.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141980439","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":"Indigenous Ingenuity: A Mini-Review of Traditional Technologies for Drinking Water Treatment in Rural East African Communities","authors":"Meserecordias Wilfred Lema","doi":"10.1002/tqem.22295","DOIUrl":"https://doi.org/10.1002/tqem.22295","url":null,"abstract":"<div>\u0000 \u0000 <p>Indigenous water treatment practices play a vital role, yet they remain underrecognized, in securing access to safe drinking water for rural communities across East Africa. This article performs a mini-review of the most common traditional techniques used by most East African communities to purify drinking water regularly. Kenya, Uganda, and Tanzania have been taken as representative countries in the region as they somehow share many social-cultural aspects, including a common language (Swahili), transboundary tribes like Maasai (Kenya/Tanzania), and Bahaya (Uganda/Tanzania). The four main traditional water purification techniques identified: filtration using locally available media, solar disinfection, Moringa coagulation, and boiling as well as improved storage. Case studies documenting the effectiveness of these indigenous practices in removing microbial pathogens and meeting WHO guidelines are also examined. However, limitations around reliance on local resources, labor demands, hygiene risks, and the inability to consistently achieve standards challenge wider adoption. The article concludes by highlighting the need for participatory optimization of traditional methods through integration with scientific expertise in a manner respecting local contexts. With proper support, these grassroots innovations can strengthen household water security on a sustainable basis.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141980437","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":"Groundwater Suitability for Domestic, Irrigation, and Livestock Uses in and Around Dodoma City, Tanzania","authors":"Ceven Shemsanga","doi":"10.1002/tqem.22300","DOIUrl":"10.1002/tqem.22300","url":null,"abstract":"<div>\u0000 \u0000 <p>This paper presents a comprehensive assessment of the physicochemical groundwater quality parameters in and around Dodoma City, the capital of Tanzania. To achieve this, a combination of field measurements, laboratory analyses, and geostatistical assessments was conducted. The primary objective was to evaluate the suitability of the groundwater for various purposes, including domestic consumption, livestock watering, irrigation, transportation, storage in metallic facilities, and industrial use. The results indicate that the major anions and cations followed the order of abundance: HCO₃⁻ &gt; Cl⁻ &gt; SO₄²⁻ &gt; NO₃⁻ for anions and Na⁺ &gt; Ca²⁺ &gt; Mg²⁺ &gt; K⁺ for cations. The average concentrations were as follows: 292.4, 170, 90, and 49.5 ppm for HCO₃⁻, Cl⁻, SO₄²⁻, and NO₃⁻, respectively, while Na⁺, Ca²⁺ Mg²⁺, and K⁺ had mean concentrations of 139, 74, 40, and 10 ppm, respectively. Areas with high population density, particularly the city center and agricultural zones, exhibited elevated levels of NO₃⁻ and Cl⁻. The spatial coexistence of these contaminants suggests a common source, primarily human-related pollution. In contrast, less populated areas demonstrated better groundwater quality and were deemed suitable for most uses. Due to the high NO₃⁻ levels, approximately 38% of groundwater sources are unsuitable for drinking purposes and/or require close monitoring of humans and livestock to detect symptoms of poisoning. Moreover, this study highlights the NO₃⁻ issue that is spreading to previously safe areas, indicating the need to review current aquifer management strategies to address the evolving challenges. Groundwater recharge sites generally exhibited better water quality compared to discharge areas with heavy groundwater abstraction, including the city center, Hombolo, Nzuguni, and the Makutupora wellfield. While there were spatial variations in groundwater suitability indices, the majority of groundwater sources were generally suitable for most uses, except for extreme cases involving high salinity and NO₃⁻. By employing modified water suitability indices and grouping groundwater quality parameters, a clearer zonation pattern was established, facilitating effective groundwater and land use planning. However, it is important to note that 99.5% of groundwater sources may cause soil and plant growth problems when used for irrigation, based on the sodium absorption ratio (SAR), permeability index (PI), and Kelly's Ratio (KR) indices. Furthermore, assessing the corrosivity ratio (CR) revealed that 97% of water points cannot be transported or stored in metal facilities due to p","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141920506","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":"The Relationship Between Climate Change and Indonesia's Malaria Burden","authors":"Ardhi Arsala Rahmani,&nbsp;Dewi Susanna,&nbsp;Tris Eryando","doi":"10.1002/tqem.22296","DOIUrl":"https://doi.org/10.1002/tqem.22296","url":null,"abstract":"<div>\u0000 \u0000 <p>Malaria has been with humans for thousands of years. It is caused by parasites of the genus Plasmodium that are transmitted by female Anopheles mosquitoes. The variation of global malaria distribution has recently been associated with changing climatic conditions, such as temperature, precipitation, windspeed, and humidity. One country where malaria transmission remains high in select subnational areas is Indonesia. Founded upon previous findings on the relationship between climate change and malaria, this research delves into the same equation for the case of Indonesia through a structural model which overcomes the variable co-interaction between temperature, precipitation, windspeed, and humidity. This study follows an ecological study design with yearly longitudinal data (<i>t</i> = 20, <i>n</i> = 432). The method of analysis employed is a structural equation modelling approach for panel datasets with an output of factor loading values to determine association levels. The independent variable is a climate change construct of maximum, minimum, and average values from temperature, windspeed, relative humidity and precipitation as observables taken from the NASA Langley Research Center (LaRC) POWER Project. Meanwhile, the dependent variable is yearly malaria incidence rates at the city and regency level extracted from the Malaria Atlas Project dataset. All variables are standardized to account for unit differences. The SEM results indicate a standardized relationship between a latent climate variable with malaria incidence in a statistically significant manner. However, differences in coefficient directions between the three models indicate that the relationship remains elusive. In the maximum value model, a standard deviation increase in the climate change construct from its mean is associated with a 0.04 standard deviation increase in malaria incidence from its own mean (<i>p</i> &lt; 0.001). On the other hand, in the minimum and average value models, a standard deviation increase in limate change construct from its mean is associated with a 0.12 and 0.09 standard deviation decrease of malaria incidence from its own mean respectively (<i>p</i> &lt; 0.001). Although statistical significance was established across all models which indicated relatively good fit across select indices, the standardized coefficient values presented in this study suggest that any associations between long term climatic variations (measured by yearly data) and malarial incidences are modest at best. The results of the structural equation models also indicate that other factors are at play when it comes to malaria case variations—as explained by the residual terms across all models.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141967722","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":"Drivers of High Concentration and Dispersal of PM10 and PM2.5 in the Eastern Part of Chhota Nagpur Plateau, India, Investigated Through HYSPLIT Model and Improvement of Environmental Health Quality","authors":"Soumik Saha,&nbsp;Sumana Bhattacharjee,&nbsp;Biswajit Bera,&nbsp;Enamul Haque","doi":"10.1002/tqem.22299","DOIUrl":"https://doi.org/10.1002/tqem.22299","url":null,"abstract":"<div>\u0000 \u0000 <p>The ambient air quality is continuously declining especially in emerging countries because of rapid rate of urbanization, industrialization, and allied activities. Thus, the principal objective of this research is to inspect the spatiotemporal variation of particulate matters and to identify the drivers of pollutant dispersal. The month-wise PM₁₀ and PM_2.5 data of 2022 and 2023 were obtained from the West Bengal Pollution Control Board. Meteorological datasets such as wind speed (m/s) and wind direction (degree) were collected from the NASA power access website. The HYSPLIT (Hybrid Single-Particle Lagrangian Integrated Trajectory) model was applied to identify the pollutant's trajectories. Results showed that Purulia station stood highest in case of absolute AQI 715 (23-1-2022 at 7 a.m.), PM_2.5 483.47 µg/m³ (23-1-2022 at 8 a.m.), and PM₁₀ 682.28 µg/m³ (23-1-2022 at 7 a.m.), respectively. During winter, the vertical expansion of particles was within the 100-m boundary layer while during summer, it dispersed vertically and crossed 2000 m above the ground surface due to the combined effect of atmospheric conditions such as wind speed, wind direction, air pressure, and temperature. Moreover, the industrial outputs of Jharkhand and West Bengal play a significant role in elevating the pollution level. Plantation of suitable pollution-resistant plants including Banyan (<i>Ficus bengalensis</i>), Mango (<i>Mangifera indica</i>), Peepul (<i>Ficus religiosa</i>), Guava (<i>Psidium guajava</i>), Kadam (<i>Neolamarkia cadamba</i>), Neem (<i>Azadirachta indica</i>) is a suitable management technique against pollution in this region.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141967727","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":"Mesopore Catalytic Activated-Carbon to Reduce Harmful Gases Indoors: Adsorption, Catalytic Oxidation, and Prediction Mechanism","authors":"Wara Dyah Pita Rengga,&nbsp;Widodo Wahyu Purwanto,&nbsp;Mahmud Sudibandriyo,&nbsp;Mohammad Nasikin","doi":"10.1002/tqem.22294","DOIUrl":"https://doi.org/10.1002/tqem.22294","url":null,"abstract":"<div>\u0000 \u0000 <p>Modification of local bamboo-based catalytic activated carbon with metallic Ag can produce mesopore and micropore types, with a mesopore content of 86%. One of the best ways to reduce formaldehyde concentrations is through catalytic adsorption. In combination with Ag nanoparticle catalyst, formaldehyde adsorption capacity is improved. Adsorption and oxidation reaction experiments are performed in a fixed bed column (<i>d</i>_i = 10 mm, length = 90 mm). The increase in formaldehyde adsorption associated with the reaction rate of formaldehyde oxidation by metallic Ag is 51 g/mmol. The oxidation reaction of Ag nanoparticles is a bimolecular reaction based on the Langmuir–Hinshelwood mechanism. Formaldehyde can be reduced by 59% and 41% through the role of adsorption and support of catalytic oxidation, respectively. Additionally, harmless gases such as CO₂ and H₂O are produced within the column.</p>\u0000 </div>","PeriodicalId":35327,"journal":{"name":"Environmental Quality Management","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141967728","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}