Applied Environmental Research最新文献_第2页

Comparative Study of Aerosol Optical Properties along a Megacity 大城市沿线气溶胶光学特性比较研究

Applied Environmental Research Pub Date : 2024-02-24 DOI: 10.35762/aer.2024010

Ariel F. Scagliotti, Marcela V. Reale, David H. Margarit, Nadia S. Gonzalez, Guillermo A. Jorge

{"title":"Comparative Study of Aerosol Optical Properties along a Megacity","authors":"Ariel F. Scagliotti, Marcela V. Reale, David H. Margarit, Nadia S. Gonzalez, Guillermo A. Jorge","doi":"10.35762/aer.2024010","DOIUrl":"https://doi.org/10.35762/aer.2024010","url":null,"abstract":"Interest in the study and characterization of aerosols has been growing given its multiple connections with air quality and climate. However, the limited ground-based stations for measurements in many countries are not enough to completely study a big city or a region. Low-cost technology arises as a viable alternative to improve the spatial resolution of measurements. This study aims to demonstrate that the properties of aerosols may change within a megacity and that is advisable to segment measurements according to their characteristics. We measured the optical properties of aerosols in the outskirts of Buenos Aires and compared the data obtained with AERONET data from the city center. This is the first study of its kind in the region. The comparison of concentration, sizes, and types of aerosols shows differences between the sites regardless of the background levels that they share regionally. While the city center has a strong influence from traffic and sea particles and levels of pollution typical of a dense city, the outskirts present several aerosol sources and characteristics of a semi-rural site with a moderate influence of anthropogenic sources.","PeriodicalId":36747,"journal":{"name":"Applied Environmental Research","volume":"39 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140435047","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}

引用次数: 0

Exploring Microplastics in Seawater and Zooplankton on the Eastern Coast of Thailand: A Case Study in Phuket Province 探索泰国东海岸海水和浮游动物中的微塑料：普吉府案例研究

Applied Environmental Research Pub Date : 2024-02-24 DOI: 10.35762/aer.2024007

P. Akkajit, Sirima Yuankerd, Arsanchai Sukkuea

{"title":"Exploring Microplastics in Seawater and Zooplankton on the Eastern Coast of Thailand: A Case Study in Phuket Province","authors":"P. Akkajit, Sirima Yuankerd, Arsanchai Sukkuea","doi":"10.35762/aer.2024007","DOIUrl":"https://doi.org/10.35762/aer.2024007","url":null,"abstract":"Microplastics can accumulate in the environment and be transferred to different trophic levels, making them a concern for the aquatic food chain. As far as the researcher is aware, this study is the first to analyze microplastics in seawater and zooplankton along the eastern coastline of Phuket, Thailand, emphasizing their ecological significance. Analysis of the seawater samples identified 256 microplastic particles, with an average concentration of 52.6±21.4 and 32.6±30.3 particles L-1 for 20–300 µm and >300 µm classes, respectively. Four zooplankton species—copepod, fish larvae, bivalvia larvae, and shrimp larvae—were chosen for examination. The findings indicated that microplastics can move to higher trophic levels, and their interaction with zooplankton resulted in 26 microplastic particles among the 120 zooplankton individuals observed. This yielded an average ingestion rate of 0.22±0.57 particles per individual zooplankton, with the highest rate observed among fish larvae. The micro-Fourier Transform Interferometer (µFT-IR) analysis verified the presence of polyethylene terephthalate (PET), polyethylene (PE), polyester, urea-formaldehyde (UF), and polyamide (PA). This underscores the prevalence of these polymers in daily and human-made plastic sources, emphasizing the need to implement effective measures to address micro-plastic pollution in ecologically vital areas to safeguard marine environments.","PeriodicalId":36747,"journal":{"name":"Applied Environmental Research","volume":"36 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140435247","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}

引用次数: 0

Groundwater Recharge and Surface Runoff Modeling Response to Land Use and Land Cover Dynamics in a Mae Wong Watershed of Thailand 泰国 Mae Wong 流域地下水补给和地表径流模型对土地利用和土地覆盖动态的响应

Applied Environmental Research Pub Date : 2024-02-24 DOI: 10.35762/aer.2024005

Banchongsak Faksomboon, Pranee Lertkaeo, Bunchongsri Phunlao

{"title":"Groundwater Recharge and Surface Runoff Modeling Response to Land Use and Land Cover Dynamics in a Mae Wong Watershed of Thailand","authors":"Banchongsak Faksomboon, Pranee Lertkaeo, Bunchongsri Phunlao","doi":"10.35762/aer.2024005","DOIUrl":"https://doi.org/10.35762/aer.2024005","url":null,"abstract":"This study aims to develop efficient management strategies and assess the spatiotemporal dynamics of land use and land cover (LULC) on surface runoff modeling response dynamics for the long-term sustainability of watersheds. The soil and water assessment tool (SWAT) model was used to evaluate the LULC dynamics on GRSR in the Mae Wong Watershed (MWW) of Thailand. Using Landsat images, three different LULC maps (2011, 2021, and 2031) were created using the cellular automata markov chain (CA-Markov) model, and TerrSet 2020 geospatial monitoring and modeling software. In the overall MWW, the forestland has undergone deforestation and decreased by 2.10% of the total area and 2.72% of the total area has been transformed into agricultural lands due to human activity and population growth. The soil, LULC, weather, and the digital elevation model (DEM) were all used in the SWAT simulation procedure. To understand the groundwater recharge and surface runoff (GRSR) responses of each hydrologic response units (HRUs), the SWAT model was calibrated and verified using streamflow and the sequential uncertainty fitting (SUFI-2) technique from the SWAT calibration and uncertainty program (SWAT-CUP). The results indicate that there is a good agreement for both the calibration and validation phases of all LULC simulations. The study indicated that groundwater recharge has decreased over the last two decades while surface runoff has increased due to the forest area being converted to agricultural land. Thus, the study can support maximizing water management and strategies for systematically attaining sustainability.","PeriodicalId":36747,"journal":{"name":"Applied Environmental Research","volume":"95 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140433617","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}

引用次数: 0

Unraveling the Effects of Arbuscular Mycorrhizal Fungi on Plant Growth, Nutrient Content, and Heavy Metal Accumulation in the Contaminated Soil: A Meta-analysis 揭示丛枝菌根真菌对受污染土壤中植物生长、养分含量和重金属积累的影响：一项 Meta 分析

Applied Environmental Research Pub Date : 2024-02-24 DOI: 10.35762/aer.2024006

Bela Putra, A. Jayanegara, Irwan Susanto

{"title":"Unraveling the Effects of Arbuscular Mycorrhizal Fungi on Plant Growth, Nutrient Content, and Heavy Metal Accumulation in the Contaminated Soil: A Meta-analysis","authors":"Bela Putra, A. Jayanegara, Irwan Susanto","doi":"10.35762/aer.2024006","DOIUrl":"https://doi.org/10.35762/aer.2024006","url":null,"abstract":"This study evaluated the effects of arbuscular mycorrhizal fungi (AMF) on plant growth, nutrient uptake, and heavy metal accumulation on polluted land using a meta-analysis approach. Data from 33 relevant studies were selected based on inclusion criteria, specifically articles in English, observational research, and investigating the role of AMF in plant growth and productivity on polluted land. The results showed that plants inoculated with AMF experienced significant accumulation of heavy metals in roots, such as Pb (p<0.01), Ni (p<0.01), Cr (p<0.01), Mn (p<0.05), Fe (p<0.05), and As (p<0.05). The AMF significantly reduced the accumulation of heavy metals such as Cr, Ni, Fe, and Cu on the upper part of fodder forage (p<0.01). Forage growth was also enhanced due to AMF. The AMF greatly increased the fresh weight, length, and phosphorus (P) content of fodder forage roots (p<0.01). It also increased the plant's biomass, fresh weight, dry weight, height, nitrogen (N), phosphorus (P), and potassium (K) contents (p<0.01). In conclusion, AMF is important in increasing plant growth, nutrient uptake and reducing heavy metal accumulation in forage on polluted land.","PeriodicalId":36747,"journal":{"name":"Applied Environmental Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140434861","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}

引用次数: 0

Effects of COVID-19 Policy on Air Quality in Lagos State, Nigeria COVID-19 政策对尼日利亚拉各斯州空气质量的影响

Applied Environmental Research Pub Date : 2024-02-24 DOI: 10.35762/aer.2024008

Chika Floyd Amaechi, Alex Enuneku, Ugochinyere Stephanie Amadi, Akus Kingsley Okoduwa

{"title":"Effects of COVID-19 Policy on Air Quality in Lagos State, Nigeria","authors":"Chika Floyd Amaechi, Alex Enuneku, Ugochinyere Stephanie Amadi, Akus Kingsley Okoduwa","doi":"10.35762/aer.2024008","DOIUrl":"https://doi.org/10.35762/aer.2024008","url":null,"abstract":"The decrease in air quality has been a major concern in the world for decades, and it has continued to worsen with toxic gases accumulating at exponential rates. The atmosphere has been heavily polluted as a result of anthropogenic activities, and these activities were greatly reduced during the COVID-19 pandemic when a lockdown policy was imposed. The study area, Lagos, is the state in Nigeria with the highest population count, making it most susceptible to the spread of the coronavirus and, as such, having the strictest policy regulations. This study seeks to evaluate the effects of the COVID-19 lockdown policy on air quality in Lagos State. The study adopted geographic information systems (GIS) and remote sensing techniques. Goggle Earth Engine (GEE) and Sentinel 5P (S5P) TROPOMI dataset were used to obtain results for carbon monoxide (CO), sulphur dioxide (SO2), aerosols (particulate matter), and nitrogen dioxide (NO2) through JavaScript coding for the year before the lockdown (2019), the year of the lockdown (2020), and the year after the lockdown (2021). Results from the study revealed that the year 2020 had lower concentrations of aerosols and NO2, which increased in 2021 when human and vehicular activities were back to normal. SO2 and CO concen-trations were higher in the year 2020 than in year 2019 and 2021, suggesting that the COVID-19 lockdown was loosely implemented. It is recommended that policymakers invest in green technologies such as solar systems to minimize emissions, enforce strict emission standards for industries and vehicles to limit the release of air pollutants.","PeriodicalId":36747,"journal":{"name":"Applied Environmental Research","volume":"2 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140434790","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}

引用次数: 0

Re–operating the Bhumibol and Sirikit Dams Using Hybrid Neuro–Fuzzy Technique to Solve the Water Scarcity and Flooding Problems in the Chao Phraya River Basin 利用混合神经模糊技术重新运行普密蓬水坝和诗丽吉水坝，解决湄南河流域缺水和洪水问题

Applied Environmental Research Pub Date : 2024-02-24 DOI: 10.35762/aer.2024009

Khin Muyar Kyaw, A. Rittima, Yutthana Phankamolsil, Allan Sriratana Tabucanon, Wudhichart Sawangphol, J. Kraisangka, Yutthana Talaluxmana, V. Vudhivanich

{"title":"Re–operating the Bhumibol and Sirikit Dams Using Hybrid Neuro–Fuzzy Technique to Solve the Water Scarcity and Flooding Problems in the Chao Phraya River Basin","authors":"Khin Muyar Kyaw, A. Rittima, Yutthana Phankamolsil, Allan Sriratana Tabucanon, Wudhichart Sawangphol, J. Kraisangka, Yutthana Talaluxmana, V. Vudhivanich","doi":"10.35762/aer.2024009","DOIUrl":"https://doi.org/10.35762/aer.2024009","url":null,"abstract":"The decision support system to reservoir re–operation using Artificial Intelligence has been broadly studied and proven in term of the operational performances for both single and multiple reservoir system, this study applied Adaptive Neuro Fuzzy Inference System (ANFIS) technique for reservoir re–operation in Chao Phraya River Basin aiming to reduce water scarcity and flooding problems in the central region of Thailand. ANFIS is an integrated approach in which neural networks are utilized to enhance the fuzzy inference system and create fuzzy “IF–Then” reservoir operational guidelines with proper membership functions for reservoir re–operation. In this study, ANFIS operating rules were trained using two different datasets; long–term dataset (scenario 1) and water year–based dataset (scenario 2). It is revealed that the extent of yearly water deficit in critical dry years are totally reduced to nearly zero when re–operating with ANFIS operation rules, except in the year 2012. However, the yearly water deficit in year 2012 is also substantially reduced from 504 MCM by the current operation to 127 and 119 MCM for scenario 1 and scenario 2, respectively when two scenarios of ANFIS–based reservoir re–operation model were performed. Moreover, considerable total amount of spilled water from BB and SK Dams is definitely declined to 0 and 37 MCM in years 2002 and 2011, respectively when water year–based ANFIS model was implemented. In addition, it is expressed that average water storages of two main dams obtained from two scenarios of ANFIS model are substantially increased up to +6.08% and +6.94% for BB Dam and +0.09% and +1.62% for SK Dam in comparison with the current operation. This signifies that supplying water from dams to meet the target water demand through adaptive fuzzy–rules can be well handled and flooded water can be minimized.","PeriodicalId":36747,"journal":{"name":"Applied Environmental Research","volume":"13 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140434430","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}

引用次数: 0

Ball-Milled Biochar from Waste Bamboo Chopsticks: A Potential Adsorbent for Methylene Blue Removal 从废竹筷中提取的球磨生物炭：去除亚甲基蓝的潜在吸附剂

Applied Environmental Research Pub Date : 2024-02-23 DOI: 10.35762/aer.2024004

Nguyen Trung Hiep, Hoang Thi Thuy Hoa, Thai Phuong Vu

{"title":"Ball-Milled Biochar from Waste Bamboo Chopsticks: A Potential Adsorbent for Methylene Blue Removal","authors":"Nguyen Trung Hiep, Hoang Thi Thuy Hoa, Thai Phuong Vu","doi":"10.35762/aer.2024004","DOIUrl":"https://doi.org/10.35762/aer.2024004","url":null,"abstract":"Waste bamboo chopsticks encounter limited recycling. Several treatment procedures necessitate sophisticated technologies and intricate processes that need more practicality for local-scale production, leading to substantial challenges in effectively repurposing waste from disposable bamboo chopsticks. In this research, waste bamboo chopsticks were used as raw materials for the production of ball-milled biochar (BM-WBCB). FTIR, SEM, and BET were among the numerous analytical methods used to describe the BM-WBCB. The outcomes showed that the surface was made up of hollow, porous structures. In addition, the pHpzc value of the biochar was 8.7, and it had a BET-specific surface area (273.11 m2 g-1). The study also investigated ball-milled biochar's adsorption capacity and efficiency in removing MB from aqueous solutions. Batch adsorption experiments were conducted under various experimental conditions, such as initial dye concentration, contact time, pH, and adsorbent dose, to evaluate the adsorption kinetics, equilibrium, and thermodynamics of the adsorption process. The results showed the optimal adsorption conditions, such as pH solution, MB concentration, dose of BM-WBCB, and contact time at 10, 30 mg L-1, 0.3 mg, and 60 min, respectively. With a maximal adsorption capacity of 4.2 mg g-1, monolayer adsorption was shown by the fit of the adsorption isotherm data to the Langmuir isotherm model. It was demonstrated that the kinetics of biochar adsorption may be accurately modeled using the linear pseudo-second-order kinetic model.","PeriodicalId":36747,"journal":{"name":"Applied Environmental Research","volume":"64 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140436888","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}

引用次数: 0

Photosynthesis-related Parameters in Leucobryum aduncum Moss Bags as Bioindicators of Environmental Stress Caused by Road Traffic 作为道路交通造成的环境压力生物指标的褐藻苔藓袋的光合作用相关参数

Applied Environmental Research Pub Date : 2024-02-23 DOI: 10.35762/aer.2024002

Chaiwat Boonpeng, Pawanrat Butrid, Marisa Pischom, Sutatip Noikrad, K. Boonpragob

{"title":"Photosynthesis-related Parameters in Leucobryum aduncum Moss Bags as Bioindicators of Environmental Stress Caused by Road Traffic","authors":"Chaiwat Boonpeng, Pawanrat Butrid, Marisa Pischom, Sutatip Noikrad, K. Boonpragob","doi":"10.35762/aer.2024002","DOIUrl":"https://doi.org/10.35762/aer.2024002","url":null,"abstract":"The physiological response in moss samples is often used as an early warning signal of environmental stress caused by air pollution. This study aimed to test the efficiency of photosynthesis-related parameters in Leucobryum aduncum moss bags as bioindicators of environmental stress related to road traffic. The moss samples were collected and prepared in a relatively unpolluted area and then transplanted at 7 sites in forested, rural, and urban areas. The moss samples were picked up after being exposed for 1 and 3 months for physiological measurements. The results showed that the average values of all physiological parameters were highest in the forested area and lowest in the urban area. All parameters at most roadside (R site) sites were lower or significantly lower than those at the site away from the road (A site). This was particularly true for the 3-month exposure period, suggesting that the length of exposure should be longer than 1 month, but exposure up to 3 months could fully damage the photosystem II (PSII) and destroy the moss bags. The vitality index (VI) also clearly indicated that the moss bags were more affected in the urban area, at the R sites, and at the 3-month exposure. Among all six parameters, the most susceptible parameter was the chlorophyll fluorescence parameter (Fv/Fm), followed by the total carotenoids, chlorophyll a, total chlorophylls, chlorophyll b, and chlorophyll a degradation (OD435/OD415). The moss bag technique used in this study did not negatively affect the studied physiological parameters, but a great elevation difference could affect the moss bag physiology. This study illustrated that the photosynthesis-related parameters of L. aduncum moss bags can be used as effective bioindicators of environmental stress caused by road traffic. This study is among the priority studies of moss bioindication of air pollution in Thailand and can pave the way for future studies.","PeriodicalId":36747,"journal":{"name":"Applied Environmental Research","volume":"34 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140437204","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}

引用次数: 0

An Optimal Culture Medium for Laccase Production and Sugar Cane Vinasse Biotreatment with Trametes villosa Using Plackett-Burman and Central Composite Designs 利用褶皱-伯曼设计和中心复合设计研究蔗渣生物处理和漆酶生产的最佳培养基

Applied Environmental Research Pub Date : 2024-02-23 DOI: 10.35762/aer.2024001

Rosa Elena Caballero, Victor Jimenez, Mónica Miranda, Dalys Rovira, Guillermo Branda, Juana Ramos Chue de Perez

{"title":"An Optimal Culture Medium for Laccase Production and Sugar Cane Vinasse Biotreatment with Trametes villosa Using Plackett-Burman and Central Composite Designs","authors":"Rosa Elena Caballero, Victor Jimenez, Mónica Miranda, Dalys Rovira, Guillermo Branda, Juana Ramos Chue de Perez","doi":"10.35762/aer.2024001","DOIUrl":"https://doi.org/10.35762/aer.2024001","url":null,"abstract":"The optimal conditions for laccase production and vinasse biotreatment with a native strain of Trametes villosa were determined by a screening-optimization approach. Eleven factors including nutrient concentration, vinasse dilution (%v/v), inoculum volume, carbon to nitrogen ratio and initial pH, were investigated for their effects on laccase activity applying the Plackett-Burman screening design. The selected factors were optimized using a central composite design, and then evaluated on a vinasse biotreatment experiment. The factors that contributed the most to the enzymatic activity were the concentrations of MgSO4∙7H2O (A), FeSO4∙7H2O (B) and CuSO4∙5H2O (C), alongside initial pH. After 10 days, laccase activity was 544.038 U L-1 for the following concentrations of A, B and C: 0.250 g L-1, 0.020 mg L-1, and 0.100 g L-1, respectively. Vinasse biotreatment under optimized conditions resulted in 82.74%, 78% and 75.97% of phenol, color, and COD removal respectively, while final pH value was 6.90. These results showed that the native strain of T. villosa has a good potential for further research on laccase production and vinasse sustainable management.","PeriodicalId":36747,"journal":{"name":"Applied Environmental Research","volume":"63 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140436724","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}

引用次数: 0

Removal of Diclofenac in Wastewater by Activated Sludge in Batch and Moving-bed Biofilm Reactor Experiments 活性污泥在间歇式和移动床生物膜反应器实验中去除废水中的双氯芬酸

Applied Environmental Research Pub Date : 2023-12-28 DOI: 10.35762/aer.2023025

Keletso Chakalisa, Piriyakorn Injai, Kullapa Chanawanno, Panaya Kotchaplai, Pumis Thuptimdang

{"title":"Removal of Diclofenac in Wastewater by Activated Sludge in Batch and Moving-bed Biofilm Reactor Experiments","authors":"Keletso Chakalisa, Piriyakorn Injai, Kullapa Chanawanno, Panaya Kotchaplai, Pumis Thuptimdang","doi":"10.35762/aer.2023025","DOIUrl":"https://doi.org/10.35762/aer.2023025","url":null,"abstract":"This study aimed to determine the diclofenac removal in wastewater by sludge taken from an operating wastewater treatment facility. Laboratory experiments were conducted in two parts: batch and moving-bed biofilm reactor (MBBR) experiments. Results from batch experiments showed that 0.1–2 mg L-1 of diclofenac could be removed more than 80% within 72 h, and the removal efficiency reduced to less than 60% for higher concentrations. The increase in the removal rate from 0.00058 to 0.16527 mg L-1 h-1 was observed when the initial diclofenac concentration increased from 0.1 to 10 mg L-1, respectively. The average first-order rate constants of 24-h and 72-h degradation were calculated as 4.71 × 10-2 and 1.99 × 10-2 h-1, respectively. The removal of diclofenac by sludge was mainly from biodegradation by microorganisms in sludge, followed by the adsorption onto the sludge biomass. The addition of various metal ions in the studied range did not significantly increase the diclofenac removal; however, the addition of Ca2+, Co2+, Fe3+, Mn2+, and Zn2+ tended to increase both diclofenac removal rate and efficiency. This positive effect was reduced when the metal ion concentrations were increased up to 0.75 ppm. Lastly, results from an initial phase of continuous MBBR showed that sludge addition during the start-up also extended the diclofenac removal efficiency to one week compared with 3 days in the experiment without sludge addition. In conclusion, the findings show the capability of using activated sludge in diclofenac wastewater treatment by the traditional or alternative systems.","PeriodicalId":36747,"journal":{"name":"Applied Environmental Research","volume":"323 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139152484","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}

引用次数: 0