Water Practice & Technology最新文献_第5页

Exploring data quality and seasonal variations of N2O in wastewater treatment: a modeling perspective 探索废水处理中一氧化二氮的数据质量和季节变化：模型视角

Water Practice & Technology Pub Date : 2024-02-28 DOI: 10.2166/wpt.2024.045

Laura Debel Hansen, P. A. Stentoft, D. Ortiz-Arroyo, Petar Durdevic

{"title":"Exploring data quality and seasonal variations of N2O in wastewater treatment: a modeling perspective","authors":"Laura Debel Hansen, P. A. Stentoft, D. Ortiz-Arroyo, Petar Durdevic","doi":"10.2166/wpt.2024.045","DOIUrl":"https://doi.org/10.2166/wpt.2024.045","url":null,"abstract":"\u0000 \u0000 In this work, operational data collected from four Danish wastewater treatment plants (WWTP) are assessed for quality issues and analyzed to investigate the feasibility of data-driven modeling for control purposes. All plants have permanent N2O sensors installed in the biological reactors, and N2O data are collected on the same terms as other measured operational variables. We present and deploy a six-dimensional data quality assessment to the operational data evaluating (1) relevance, (2) accuracy, (3) completeness, (4) consistency, (5) comparability, and (6) accessibility. Seasonal variations and time-varying interrelation between N2O and nitrogenous variables are, furthermore, investigated and our evaluation results are compared across the different case plants and process designs. Results show that the quality of the operational data varies substantially between plants. The investigation of time-varying interrelation between N2O and nitrogenous variables showed no clear pattern within or across different case plants. To increase the accuracy and completeness of the stored data, it is thus suggested that future initiatives are taken toward the collection and storing of metadata in WWTPs. Furthermore, it is recommended that future research should consider adapting models so that more influence is linked to reliable measurements, contrary to assuming that all variables are of equal quality.","PeriodicalId":510255,"journal":{"name":"Water Practice & Technology","volume":"103 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140421861","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

Usability of simplified UV–Vis spectrophotometric methods for the determination of nitrate in the presence of organic matter and chloride as interfering factors 在有有机物和氯化物作为干扰因素的情况下，测定硝酸盐的简化紫外可见分光光度法的实用性

Water Practice & Technology Pub Date : 2024-02-27 DOI: 10.2166/wpt.2024.043

Marcela Silva, Luana Bermejo de Lima, Carolina de Camargo, Claudia Telles Benatti

{"title":"Usability of simplified UV–Vis spectrophotometric methods for the determination of nitrate in the presence of organic matter and chloride as interfering factors","authors":"Marcela Silva, Luana Bermejo de Lima, Carolina de Camargo, Claudia Telles Benatti","doi":"10.2166/wpt.2024.043","DOIUrl":"https://doi.org/10.2166/wpt.2024.043","url":null,"abstract":"\u0000 \u0000 The presence of nitrate in groundwater and surface water in concentrations above levels suitable for human consumption is an increasingly common problem. This is mainly due to human activity, such as the excessive use of fertilizers and the inadequate deactivation of pits. Water analysis laboratories very often carry out analyses to determine nitrate to control the presence of this anion in water intended for human consumption. One of the most commonly used methods is spectrophotometry, both with commercially available kits and by direct measurement of specific wavelengths. However, in these methods, the presence of organic matter and chloride can influence the results obtained. Thus, in this study, the applicability of the simplification (without acidification) of two methods for the determination of nitrate in water by ultraviolet–visible absorbance was verified in the presence of the above-mentioned interfering factors, and it was found that the absorbance method at 220 nm corrected for the absorbance at 275 nm, in its simplified form without acidification, can be used with concentrations of organic matter of 20 mg L−1 for high nitrate concentrations (10 mg L−1 NO3-N).","PeriodicalId":510255,"journal":{"name":"Water Practice & Technology","volume":"64 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140424383","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

Green synthesis of zinc oxide nanoparticles from Salvadora persica leaf extract: Characterization and studying methyl orange removal by adsorption 从萨尔瓦多柿叶提取物中绿色合成氧化锌纳米颗粒：表征和吸附去除甲基橙的研究

Water Practice & Technology Pub Date : 2024-02-27 DOI: 10.2166/wpt.2024.042

Amal S. Al Rahbi, Ahlam H. Al Mawali, Shahad S. Al Rawahi, Rima K. Al Dighishi, Fatma A. Al Abri, Anwar Ahmed, Sadik Rahman

{"title":"Green synthesis of zinc oxide nanoparticles from Salvadora persica leaf extract: Characterization and studying methyl orange removal by adsorption","authors":"Amal S. Al Rahbi, Ahlam H. Al Mawali, Shahad S. Al Rawahi, Rima K. Al Dighishi, Fatma A. Al Abri, Anwar Ahmed, Sadik Rahman","doi":"10.2166/wpt.2024.042","DOIUrl":"https://doi.org/10.2166/wpt.2024.042","url":null,"abstract":"\u0000 \u0000 The present study conducted a successful green synthesis of zinc oxide nanoparticles (ZnO NPs) from the aqueous solution of Salvadora persica leaf extract as a capping agent. The environmental application of the synthesized ZnO NP was understood from the methyl orange (MO) dye removal investigation. The morphology, chemical composition, crystallinity, optical property, and isothermal behaviour of synthesized NPs were characterized by scanning electron microscopy (SEM), energy-dispersive spectroscopy, Fourier transform infrared (FTIR), X-ray diffraction (XRD), and UV-visible spectroscopy (UV-Vis). The UV-Vis absorption band was found at 365 nm, and the XRD analysis confirmed the crystallinity of the ZnO NP and the particle sizes were in the range of 32–68 nm. The FTIR bands confirm the presence of bioactive compounds. SEM images showed the formation of hexagonal and rod-shaped NPs. The findings suggested that the shape of the synthesized ZnO NPs has a major influence on the removal of MO from water. The results revealed that a maximum MO removal of 68% was obtained with an amount of 0.05 g of ZnO NPs at pH 5. This research demonstrates a green method of preparing various ZnO NPs with a remarkable efficiency towards the removal of MO dye.","PeriodicalId":510255,"journal":{"name":"Water Practice & Technology","volume":"21 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140425981","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

Estimating the percentage effects of Bemacid red dye adsorption dynamic parameters using a full factorial design approach 用全因子设计法估算贝马西德红色染料吸附动态参数的百分比效应

Water Practice & Technology Pub Date : 2024-02-27 DOI: 10.2166/wpt.2024.041

F. Ouazani, Sofiane Guella, Yassine Khalfi, K. Benouis

{"title":"Estimating the percentage effects of Bemacid red dye adsorption dynamic parameters using a full factorial design approach","authors":"F. Ouazani, Sofiane Guella, Yassine Khalfi, K. Benouis","doi":"10.2166/wpt.2024.041","DOIUrl":"https://doi.org/10.2166/wpt.2024.041","url":null,"abstract":"\u0000 \u0000 In this study, we investigate the removal of Bemacid red dye using brewery waste in a packed bed column. We examined the effects of bed height, inlet flow, and inlet dye concentration on the column dynamics of adsorption. To assess the favorable column dynamics, we analyzed the breakthrough curves (BTCs). We also used the Clark, Thomas, Bed Depth Service Time (BDST), and Adams-Bohart models to determine the kinetic constants of the adsorption column from the obtained results of the dynamic studies curve of the BTCs. Analysis of the BTC studies revealed that both the BTCs time and worn-out time values increased with an increase in bed height and inlet Bemacid red dye dosage but decreased with an increase in the inlet flow rate. The results further showed that Thomas’ model was the most suitable for describing the entire BTCs (R2 > 0.93). Using a full factorial design to estimate the percentage effects of cited dynamic parameters, we found that these parameters accounted for 98% of the adsorption capacity. This methodology for estimation provides crucial information on the effects of parameters and the extent to which the adsorption capacity depends on the studied parameters.","PeriodicalId":510255,"journal":{"name":"Water Practice & Technology","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140426221","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 innovative method for estimating settling velocity of particles in stormwater using absorbance measurements and modelling 利用吸光度测量和建模估算雨水中颗粒沉降速度的创新方法

Water Practice & Technology Pub Date : 2024-02-26 DOI: 10.2166/wpt.2024.040

S. Haghighatafshar, Emma Hallinger, Daniel Espinoza, Basel Al-Rudainy

{"title":"An innovative method for estimating settling velocity of particles in stormwater using absorbance measurements and modelling","authors":"S. Haghighatafshar, Emma Hallinger, Daniel Espinoza, Basel Al-Rudainy","doi":"10.2166/wpt.2024.040","DOIUrl":"https://doi.org/10.2166/wpt.2024.040","url":null,"abstract":"\u0000 \u0000 The purpose of the study was to develop a simple and rapid method for measuring the average settling velocity of particles in stormwater ponds. Water samples with suspended particles were collected from the bottom of a stormwater pond in Lund, Sweden. The absorbance in various samples was measured over 24 h (at 600 nm wavelength) and then translated into total solids concentrations. A one-dimensional model based on the Mason–Weaver equation was coded in Python and solved. The absorbance measurements were used to calibrate the model, thereby quantifying settling velocities and dispersion coefficients for samples from different zones of the stormwater pond. The quantified settling velocities ranged from 40 to 200 mm/h for fast-settling particles and from 2 to 8 mm/h for slow-settling particles. The developed methodology provided a mass estimate of the two modelled particle groups (i.e., fast- and slow-settling particles). Based on the model estimates, fast-settling particles dominated all samples, constituting 70–90% of the total solid mass. Due to its simplicity and inexpensiveness, this methodology is a potential alternative to more demanding and complicated methodologies used for measuring particle velocities in sedimentation systems.","PeriodicalId":510255,"journal":{"name":"Water Practice & Technology","volume":"27 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140429845","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

Development of MXene for removal of lead (Pb+) ions from wastewater 开发用于去除废水中铅（Pb+）离子的 MXene

Water Practice & Technology Pub Date : 2024-02-26 DOI: 10.2166/wpt.2024.039

Abhishek Kagalkar, S. Dharaskar, Nitin Chaudhari

{"title":"Development of MXene for removal of lead (Pb+) ions from wastewater","authors":"Abhishek Kagalkar, S. Dharaskar, Nitin Chaudhari","doi":"10.2166/wpt.2024.039","DOIUrl":"https://doi.org/10.2166/wpt.2024.039","url":null,"abstract":"\u0000 \u0000 A new family of 2D materials with enhanced properties than graphene plays a crucial role in environmental remediation and sustainability. The concentration of heavy metal ions in wastewater is an emerging issue in the global scenario. Heavy metals such as lead, chromium, cadmium, etc. are natural carcinogens and adversely affect environmental species, which tend to have potential activities on the surface of the new families. Lead poisoning is a very raising issue in some parts of India and is a major effluent disposed of to the waterbodies from various industrial streams. The removal of the lead components is studied in this research using adsorption experimentation using MXene as the surface-active adsorbent. The possible mechanism for lead removal from wastewater is also discussed, as well as the effective regeneration and reusability of the adsorbent over long adsorption cycles. MXenes were applied after the confirmation using X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy and zeta-potential. The induced coupled plasma–optical emission spectroscopy confirms the lead remediation by over 96% in the first adsorption cycle, which was then reduced to over 92% in the second adsorption cycle. The lead contamination was under the permissible limits as per the water standards.","PeriodicalId":510255,"journal":{"name":"Water Practice & Technology","volume":"171 S374","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140428832","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

Identification of surfactin lipopeptides isoforms produced by a newly isolated strain Bacillus sp. MI27 with potential use as main ingredients in detergent formulation: Application of mixture design for the formulation of a bio-based detergent 鉴定新分离菌株芽孢杆菌 MI27 产生的表面活性素脂肽异构体，这些异构体可用作洗涤剂配方的主要成分：混合设计在生物基洗涤剂配方中的应用

Water Practice & Technology Pub Date : 2024-02-24 DOI: 10.2166/wpt.2024.034

Marwa Ghoul, Mouna Bouassida, Roser Segovia, D. Ghribi, Francesc Rabanal Anglada, Mnif Inès

引用次数: 0

Harnessing the potential of zinc oxide nanoparticles from Strychnos potatorum seeds impregnated with activated carbon for an effective removal of fluoride in deep soil water 利用浸渍活性炭的马钱子种子中的氧化锌纳米颗粒的潜力，有效去除土壤深层水中的氟化物

Water Practice & Technology Pub Date : 2024-02-22 DOI: 10.2166/wpt.2024.037

Akshaya V., Jayanthi G.

{"title":"Harnessing the potential of zinc oxide nanoparticles from Strychnos potatorum seeds impregnated with activated carbon for an effective removal of fluoride in deep soil water","authors":"Akshaya V., Jayanthi G.","doi":"10.2166/wpt.2024.037","DOIUrl":"https://doi.org/10.2166/wpt.2024.037","url":null,"abstract":"\u0000 \u0000 Fluoride contamination in water has emerged as a pressing global issue. In this study, we have proposed a novel and promising approach for efficient deep soil water fluoride removal using a zinc oxide nanoparticle (ZnO NP)-activated carbon composite. The composite material is designed to enhance the adsorption capacity and efficiency in removing fluoride ions from deep soil water. The green synthesis method was used for preparing ZnO NPs from Strychnos potatorum seed powder, and these nanoparticles were coated on an activated carbon filter for water purification. The performance of the composite material, in this extensive column adsorption method, from the fluoride-contaminated water samples was evaluated. Parameters such as physiochemical parameters, initial fluoride concentration, contact time, and composite dosage are systemically investigated. The results demonstrate that the ZnO NP-activated carbon composite exhibits superior fluoride removal efficiency compared to pristine-activated carbon. The composite material achieves a remarkable fluoride removal capacity of 10 mg/g. In-depth characterization techniques such as UV–Vis spectroscopy were used to measure the strength of ZnO NP synthesis, and scanning electron microscopy (SEM) and X-ray diffraction (XRD) were employed to analyze the morphology and crystalline structure of the composite material. In conclusion, the potential of ZnO NPs/AC could instantly and easily remove toxic chemicals and make water potable.","PeriodicalId":510255,"journal":{"name":"Water Practice & Technology","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140440040","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

Modelling flow of the major canals of Sylhet city using the EPA SWMM runoff model 利用 EPA SWMM 径流模型模拟锡尔赫特市主要运河的流量

Water Practice & Technology Pub Date : 2024-02-22 DOI: 10.2166/wpt.2024.038

G. Munna, Md Mahmudul Hasan, M. J. Alam, M. Uddin, Mohammad Shahidur Rahman, A. Nury, Shriful Islam

{"title":"Modelling flow of the major canals of Sylhet city using the EPA SWMM runoff model","authors":"G. Munna, Md Mahmudul Hasan, M. J. Alam, M. Uddin, Mohammad Shahidur Rahman, A. Nury, Shriful Islam","doi":"10.2166/wpt.2024.038","DOIUrl":"https://doi.org/10.2166/wpt.2024.038","url":null,"abstract":"\u0000 \u0000 Geographically, local canals in Sylhet city, Bangladesh, mostly transport the rainwater to the Surma River as the city lacks typical drainage infrastructure for runoff control. Hence, proper hydraulic and hydrologic models are required to assess the current potential of these canals to withstand significant runoff and enhance the protection of flood problems during a severe storm. In this study, the Malni Chara and Goali Chara drainage sub-systems of Sylhet city's major drainage sub-systems were calibrated and verified using the EPA SWMM, respectively, using the hydrological data from 2016 to 2019 and the meteorological data from 1975 to 2019. Overall, the models will be suitable for the runoff quantity measuring since the simulated results matched the observed data well. For the Malni Chara sub-system, R2 of 0.94, Nash–Sutcliffe efficiency (NSE) of 0.92, d of 0.97, percent bias (PBIAS) (%) of 2.96%, and RMSE standard deviation ratio (RSR) of 0.05 have been found and for the Goali Chara sub-system, R2 of 0.96, NSE of 0.90, d of 0.93, PBIAS (%) of 1.54%, and RSR of 0.08 have been found.","PeriodicalId":510255,"journal":{"name":"Water Practice & Technology","volume":"47 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140439322","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

Seasonal quality and statistical assessment of physicochemical properties and base saturation of Hadejia-Nguru wetland soils, Northwest/Eastern Nigeria 尼日利亚西北/东部 Hadejia-Nguru 湿地土壤理化性质和碱饱和度的季节性质量和统计评估

Water Practice & Technology Pub Date : 2024-02-21 DOI: 10.2166/wpt.2024.035

Sa’adatu E. Mohammed, Deborah Olubunmi Aderibigbe, Muhammad Dayyab Saeed, S. Nelana, Ahmadu Musa, O. Ayanda

{"title":"Seasonal quality and statistical assessment of physicochemical properties and base saturation of Hadejia-Nguru wetland soils, Northwest/Eastern Nigeria","authors":"Sa’adatu E. Mohammed, Deborah Olubunmi Aderibigbe, Muhammad Dayyab Saeed, S. Nelana, Ahmadu Musa, O. Ayanda","doi":"10.2166/wpt.2024.035","DOIUrl":"https://doi.org/10.2166/wpt.2024.035","url":null,"abstract":"\u0000 \u0000 The evaluation of Hadejia-Nguru wetland soils was carried out for two consecutive dry seasons. Standard analytical techniques were adopted to analyze the samples and statistical models were used to assess the spatial and temporal distribution of the parameters selected. The average pH values of the soil samples were mostly alkaline, and all the measured values were also within the approved standards. Experimental results revealed a significantly positive correlation between Ca and Mg for both seasons as indicated by the p-values and a high coefficient of determination (R2) for both metals with cation exchange capacity (CEC) values as the predictors. The regression analysis showed that the changes in CEC and pH levels in the soil were dependent on changes in Ca and Mg content of the soil. The data obtained showed that the increase in pH is directly proportional to the CEC and base saturation of the soils. A higher percentage of Ca than other cations (Mg, K and Na) was observed from the base saturation of the soils. The pH, base saturation, and CEC levels in the soils are suitable for most crops grown in the area, which has the potential to support a wide range of crops with further exploration.","PeriodicalId":510255,"journal":{"name":"Water Practice & Technology","volume":"60 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140444591","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

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