The present study offers a quality assessment of the mineral and spring waters marketed in Algeria within the national and international legislations, examines the potential contribution of bottled waters to essential elements intake and effects on public health based on empirical, graphical tools, multivariate statistical techniques and (DRI) system. The study covered a dataset of 30 mineral and 33 spring brands. The parameters included, from bottle labels, were of physicochemical nature. All brands comply with National WHO norms for the bottled waters, except for (Brand#63) in which NO2− exceeded the maximum permissible limit for mineral water and (Brands#4 and #21) in which TH and TDS exceeded the Algerian recommended guidelines for spring water. Nearly 5% of the total brands were of bicarbonate nature belonging to mineral water, while 25% of all brands were suitable for low-sodium-diet. PCA and HCA showed that bottled waters could be classified into two distinct groups, according to degree of mineralization. The DRI system revealed that Algerian bottled waters contributed substantially to the daily intake for Mg2+ with up to (63%), Na+ (40.36%) and Ca2+ (36%) for spring water for different ages and genders, whereas mineral water exceeded the maximum recommended daily intake for Ca2+ (128%) and Na+ (148.36%) for adults.
{"title":"Evaluating the quality and nutritional content of bottled waters in Algeria","authors":"Lahbib Tamrabet, Sekiou Fateh, Tamrabet Selsabil","doi":"10.2166/aqua.2024.079","DOIUrl":"https://doi.org/10.2166/aqua.2024.079","url":null,"abstract":"\u0000 \u0000 The present study offers a quality assessment of the mineral and spring waters marketed in Algeria within the national and international legislations, examines the potential contribution of bottled waters to essential elements intake and effects on public health based on empirical, graphical tools, multivariate statistical techniques and (DRI) system. The study covered a dataset of 30 mineral and 33 spring brands. The parameters included, from bottle labels, were of physicochemical nature. All brands comply with National WHO norms for the bottled waters, except for (Brand#63) in which NO2− exceeded the maximum permissible limit for mineral water and (Brands#4 and #21) in which TH and TDS exceeded the Algerian recommended guidelines for spring water. Nearly 5% of the total brands were of bicarbonate nature belonging to mineral water, while 25% of all brands were suitable for low-sodium-diet. PCA and HCA showed that bottled waters could be classified into two distinct groups, according to degree of mineralization. The DRI system revealed that Algerian bottled waters contributed substantially to the daily intake for Mg2+ with up to (63%), Na+ (40.36%) and Ca2+ (36%) for spring water for different ages and genders, whereas mineral water exceeded the maximum recommended daily intake for Ca2+ (128%) and Na+ (148.36%) for adults.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"3 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140728979","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}
Anastasia Kennedy (Doronina), Stewart Paul Husband, J. Boxall, Vanessa Speight
Service reservoirs (SRs) are a critical component of drinking water distribution systems that impact water quality. There are no performance measures to quantify or understand this impact. By applying the concept of sink or source behaviour to describe the processes of material accumulation and mobilisation within SRs, this research develops a practical metric to facilitate assessment and quantification of SR performance. It is demonstrated how a few weeks of continuous data from instrumentation deployment at both inlet and outlet of SRs is sufficient to reveal valuable insight into SR and network performance. Through real-world applications, we provide evidence that the metric was able to track SR performance showing both beneficial and detrimental impacts on water quality, as well as quantifying seasonality and the benefits of SR cleaning. Such insight is invaluable for proactive, justifiable, and targeted decisions on the location and frequency of maintenance and management interventions.
{"title":"A metric for drinking water service reservoir performance as a sink or source of material","authors":"Anastasia Kennedy (Doronina), Stewart Paul Husband, J. Boxall, Vanessa Speight","doi":"10.2166/aqua.2024.039","DOIUrl":"https://doi.org/10.2166/aqua.2024.039","url":null,"abstract":"\u0000 \u0000 Service reservoirs (SRs) are a critical component of drinking water distribution systems that impact water quality. There are no performance measures to quantify or understand this impact. By applying the concept of sink or source behaviour to describe the processes of material accumulation and mobilisation within SRs, this research develops a practical metric to facilitate assessment and quantification of SR performance. It is demonstrated how a few weeks of continuous data from instrumentation deployment at both inlet and outlet of SRs is sufficient to reveal valuable insight into SR and network performance. Through real-world applications, we provide evidence that the metric was able to track SR performance showing both beneficial and detrimental impacts on water quality, as well as quantifying seasonality and the benefits of SR cleaning. Such insight is invaluable for proactive, justifiable, and targeted decisions on the location and frequency of maintenance and management interventions.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"36 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140734372","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}
G. C. Chintokoma, Y. Chebude, Shimelis Kebede, A. G. Demesa, Tuomas Koiranen
To overcome the challenges associated with powdered activated carbon (PAC) in wastewater treatment, the efficacy of composite adsorbent coating (CAC) prepared using a simple sol-gel method with Prosopis juliflora–activated carbon for the simultaneous reduction of Cd2+ and Cr2O72- was investigated. The synthesized CAC was characterized by Fourier-transform infrared spectroscopy (C–H, C = O, and O–H stretching), pH point of zero charge (6–6.6), scanning electron microscopy (porous-rough surface), and Brunauer–Emmett–Teller surface area (10.6 m2/g) techniques. The analysis of variance results showed that pH and contact time were significant (p < 0.0001) for both Cd2+ and Cr2O72- removal. Generally, Cd2+ removal was higher than that of Cr2O72- at various operating conditions owing to the former's superior ionic properties. At the optimized operating parameters (pH = 8.5, adsorbent dosage = 0.25 g, initial concentration = 5 mg/L, contact time = 105 min, and temperature = 23.73°), the predicted and experimental ion removal efficiencies were 86.86 and 83.98% for Cd2+ and 94.26 and 58.08% for Cr2O72-, respectively. The Langmuir adsorption isotherm was the best-suited model (R2 > 0.99), while the metal ions removal was regulated by the pseudo-second-order Kinetic model (R2 > 0.999). The − ΔG°, +ΔH°, and +ΔS° values revealed the endothermic character and spontaneity of the adsorption process. The findings demonstrate the high potential of using CAC as an adsorbent for removal of metal ions to circumvent the PAC challenges in wastewater treatment.
{"title":"Sol-gel synthesis of composite adsorbent coating from Prosopis juliflora–activated carbon for simultaneous adsorptive removal of Cd2+ and from wastewater","authors":"G. C. Chintokoma, Y. Chebude, Shimelis Kebede, A. G. Demesa, Tuomas Koiranen","doi":"10.2166/aqua.2024.335","DOIUrl":"https://doi.org/10.2166/aqua.2024.335","url":null,"abstract":"\u0000 \u0000 To overcome the challenges associated with powdered activated carbon (PAC) in wastewater treatment, the efficacy of composite adsorbent coating (CAC) prepared using a simple sol-gel method with Prosopis juliflora–activated carbon for the simultaneous reduction of Cd2+ and Cr2O72- was investigated. The synthesized CAC was characterized by Fourier-transform infrared spectroscopy (C–H, C = O, and O–H stretching), pH point of zero charge (6–6.6), scanning electron microscopy (porous-rough surface), and Brunauer–Emmett–Teller surface area (10.6 m2/g) techniques. The analysis of variance results showed that pH and contact time were significant (p < 0.0001) for both Cd2+ and Cr2O72- removal. Generally, Cd2+ removal was higher than that of Cr2O72- at various operating conditions owing to the former's superior ionic properties. At the optimized operating parameters (pH = 8.5, adsorbent dosage = 0.25 g, initial concentration = 5 mg/L, contact time = 105 min, and temperature = 23.73°), the predicted and experimental ion removal efficiencies were 86.86 and 83.98% for Cd2+ and 94.26 and 58.08% for Cr2O72-, respectively. The Langmuir adsorption isotherm was the best-suited model (R2 > 0.99), while the metal ions removal was regulated by the pseudo-second-order Kinetic model (R2 > 0.999). The − ΔG°, +ΔH°, and +ΔS° values revealed the endothermic character and spontaneity of the adsorption process. The findings demonstrate the high potential of using CAC as an adsorbent for removal of metal ions to circumvent the PAC challenges in wastewater treatment.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"44 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140733818","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}
Tien Nguyen, Nguyen Phuong Lan Tran, Tran Thi Bich Chau Vo
The shrimp aquaculture industry has recently witnessed dramatic growth. Shrimp farming has gradually shifted from extensive to intensive or super-intensive models. However, the intensification of shrimp aquaculture is associated with energy security and environmental issues. The aeration system requires high energy demand to run mechanical aerators to maintain dissolved oxygen concentration in cultured ponds. Besides, intensive shrimp farms usually produce wastewater with high pollutant concentrations that may jeopardize the ecosystem when discharged. In an attempt to minimize the impacts of these problems, rigorous technological approaches have been carried out. This review provides recent advanced technologies employed to improve aeration and wastewater management. Moreover, this paper also introduces a sustainable energy model being studied and developed for aeration and wastewater treatment at shrimp farms.
{"title":"Advances in aeration and wastewater treatment in shrimp farming: emerging trends, current challenges, and future perspectives","authors":"Tien Nguyen, Nguyen Phuong Lan Tran, Tran Thi Bich Chau Vo","doi":"10.2166/aqua.2024.328","DOIUrl":"https://doi.org/10.2166/aqua.2024.328","url":null,"abstract":"\u0000 \u0000 The shrimp aquaculture industry has recently witnessed dramatic growth. Shrimp farming has gradually shifted from extensive to intensive or super-intensive models. However, the intensification of shrimp aquaculture is associated with energy security and environmental issues. The aeration system requires high energy demand to run mechanical aerators to maintain dissolved oxygen concentration in cultured ponds. Besides, intensive shrimp farms usually produce wastewater with high pollutant concentrations that may jeopardize the ecosystem when discharged. In an attempt to minimize the impacts of these problems, rigorous technological approaches have been carried out. This review provides recent advanced technologies employed to improve aeration and wastewater management. Moreover, this paper also introduces a sustainable energy model being studied and developed for aeration and wastewater treatment at shrimp farms.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"33 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140734552","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}
As water allocation (WA) is reduced due to water scarcity in a river basin, the benefit function for the domestic water users and the economic sectors declines accordingly. Using the sigmoid-type equation, which is ubiquitous in natural and man-made systems, this study shows that the S-curve behaviour can be seen in a broad range of basin WA scenarios. A questionnaire survey reveals that progressive water supply cutback results in a mild initial hassle but builds up to an elaborate inconvenience and subsequently a diminished shock to the water users. The economic benefit of water consumption based on 8-year data of states in Malaysia shows evidence of the S-curve characteristics where lesser developed states tend to benefit more as water consumption increases. The model allows the sectorial benefit (and impact) level to be approximated as a function of basin water availability. The mathematical quantification, in lieu of qualitative descriptors, is useful as an integral component in water prioritisation and WA decision-making to provide an empirical assessment of optimum basin-wide benefit.
由于流域缺水，水量分配（WA）减少，生活用水户和经济部门的效益函数也相应下降。本研究使用了在自然和人造系统中普遍存在的 S 形方程，结果表明，在各种流域水资源分配情景中都可以看到 S 曲线行为。一项问卷调查显示，逐步削减供水量会在初期造成轻微的麻烦，但随后会带来诸多不便，对用水户的冲击也会随之减弱。基于马来西亚各州 8 年数据的用水经济效益显示出 S 曲线特征，即随着用水量的增加，欠发达州往往受益更多。该模型可将各部门的效益（和影响）水平近似地视为流域供水量的函数。数学量化代替了定性描述，可作为水资源优先排序和西南亚决策的一个组成部分，为整个流域的最佳效益提供经验评估。
{"title":"Characterisation of the benefit function of basin water allocation using a sigmoid-type S-curve logistic equation","authors":"Ahmad Fakhri Ishak, Wei Koon Lee, Foo Hoat Lim","doi":"10.2166/aqua.2024.075","DOIUrl":"https://doi.org/10.2166/aqua.2024.075","url":null,"abstract":"\u0000 As water allocation (WA) is reduced due to water scarcity in a river basin, the benefit function for the domestic water users and the economic sectors declines accordingly. Using the sigmoid-type equation, which is ubiquitous in natural and man-made systems, this study shows that the S-curve behaviour can be seen in a broad range of basin WA scenarios. A questionnaire survey reveals that progressive water supply cutback results in a mild initial hassle but builds up to an elaborate inconvenience and subsequently a diminished shock to the water users. The economic benefit of water consumption based on 8-year data of states in Malaysia shows evidence of the S-curve characteristics where lesser developed states tend to benefit more as water consumption increases. The model allows the sectorial benefit (and impact) level to be approximated as a function of basin water availability. The mathematical quantification, in lieu of qualitative descriptors, is useful as an integral component in water prioritisation and WA decision-making to provide an empirical assessment of optimum basin-wide benefit.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"751 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140749151","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}
Presented here is a study on the semantic analysis of mainstream media news related to the COVID-19 outbreak in China that occurred at the end of 2019. Examining the most frequently used keywords and their co-occurrences, researchers can infer a semantic network that represents the major frames used in a large amount of text. Frames are cognitive structures that people use to understand and communicate about issues. Through framing, media and individuals choose to highlight certain aspects of the crisis while downplaying other aspects. This study demonstrates that Chinese mainstream media users applied 12 frames, including basic information, vaccines, politics, economy, and war metaphors, to analyze the public health crisis related to the COVID-19 outbreak. The study also explores how the use of these frameworks changed in different stages of the COVID-19 pandemic, providing new perspectives and content for research on crisis and emergency risk communication. Methodologically, this study demonstrates the feasibility of identifying frames in Chinese media news through text mining and semantic network analysis. From a practical perspective, the findings provide valuable insights for public health professionals in understanding Chinese media perception and formulating crisis communication strategies for future public health emergencies.
{"title":"The crisis communication of the COVID-19 pandemic in media discourse: text mining for infectious disease frames and environmental pollution","authors":"Yuhang Li, Zhifa Zeng, Lisai Yu","doi":"10.2166/aqua.2024.063","DOIUrl":"https://doi.org/10.2166/aqua.2024.063","url":null,"abstract":"\u0000 Presented here is a study on the semantic analysis of mainstream media news related to the COVID-19 outbreak in China that occurred at the end of 2019. Examining the most frequently used keywords and their co-occurrences, researchers can infer a semantic network that represents the major frames used in a large amount of text. Frames are cognitive structures that people use to understand and communicate about issues. Through framing, media and individuals choose to highlight certain aspects of the crisis while downplaying other aspects. This study demonstrates that Chinese mainstream media users applied 12 frames, including basic information, vaccines, politics, economy, and war metaphors, to analyze the public health crisis related to the COVID-19 outbreak. The study also explores how the use of these frameworks changed in different stages of the COVID-19 pandemic, providing new perspectives and content for research on crisis and emergency risk communication. Methodologically, this study demonstrates the feasibility of identifying frames in Chinese media news through text mining and semantic network analysis. From a practical perspective, the findings provide valuable insights for public health professionals in understanding Chinese media perception and formulating crisis communication strategies for future public health emergencies.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"5 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140367136","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}
Samiya Gul, Ivan Gunass Govender, F. Bux, S. H. Baba
The acceptance of recycled wastewater plays a pivotal role in shaping the success of water management strategies. This study examines relation of public attitudes, knowledge, behaviors, and trust toward recycled wastewater systems, utilizing a survey of participants. The results reveal substantial knowledge deficits, with only 23.8% correctly defining recycled wastewater. In addition, 46.3% of respondents were knowledgeable about water scarcity, while 45.3% correctly identified the largest water uses. Attitudes were more reserved toward potable applications, with only 5% strongly agreeing to consume recycled water for drinking. Behavioral intentions favored non-potable uses, with 87% agreeing to use recycled wastewater for home gardening and flushing toilets, while 56% considered consuming food irrigated with recycled wastewater acceptable. Trust in water authorities emerged as a significant factor influencing acceptance. Lack of competence and not acting in public interest were identified as key factors eroding trust. The study also explored the influence of religion, revealing that non-contact applications were widely accepted across all religions, while direct-contact applications generated varied responses. The findings underscore the need for targeted educational campaigns, the cultivation of trust, and a nuanced approach considering cultural and religious diversity to promote wastewater recycling.
{"title":"Role of public attitude, knowledge, and trust in shaping the acceptance of recycled wastewater for potable and non-potable uses","authors":"Samiya Gul, Ivan Gunass Govender, F. Bux, S. H. Baba","doi":"10.2166/aqua.2024.225","DOIUrl":"https://doi.org/10.2166/aqua.2024.225","url":null,"abstract":"\u0000 \u0000 The acceptance of recycled wastewater plays a pivotal role in shaping the success of water management strategies. This study examines relation of public attitudes, knowledge, behaviors, and trust toward recycled wastewater systems, utilizing a survey of participants. The results reveal substantial knowledge deficits, with only 23.8% correctly defining recycled wastewater. In addition, 46.3% of respondents were knowledgeable about water scarcity, while 45.3% correctly identified the largest water uses. Attitudes were more reserved toward potable applications, with only 5% strongly agreeing to consume recycled water for drinking. Behavioral intentions favored non-potable uses, with 87% agreeing to use recycled wastewater for home gardening and flushing toilets, while 56% considered consuming food irrigated with recycled wastewater acceptable. Trust in water authorities emerged as a significant factor influencing acceptance. Lack of competence and not acting in public interest were identified as key factors eroding trust. The study also explored the influence of religion, revealing that non-contact applications were widely accepted across all religions, while direct-contact applications generated varied responses. The findings underscore the need for targeted educational campaigns, the cultivation of trust, and a nuanced approach considering cultural and religious diversity to promote wastewater recycling.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"40 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140375169","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}
Zhiling Yang, Zhaocai Wang, Zhiyuan Yao, Xiaoguang Bao
Population growth and economic development, coupled with water pollution and the frequent occurrence of extreme weather, have led to a growing contradiction between water supply and demand in some regions. To address this challenge, rational and optimal allocation of regional water resources has emerged as a crucial approach. This study focuses on creating a comprehensive model for optimizing regional water resource allocation, taking into account social, economic, and ecological factors. In addition, three innovative modifications are introduced to the firefly algorithm (FA), resulting in the development of the improved firefly algorithm (IFA). The effectiveness of IFA is validated through experiments involving nine benchmark functions. The results highlight the improved search efficiency and convergence achieved by IFA compared to other intelligent algorithms. Moreover, the application of IFA in solving the water resource allocation challenge in Shannxi Province, China, for 2020 and 2021 demonstrates a reduction in the overall water shortage rate to 4.69 and 1.72%, at a 75% guarantee rate. This reduction in water shortages contributes to addressing future scarcities. The proposed allocation scheme offers comprehensive benefits and provides crucial technical support for water resource management. Ultimately, this study offers valuable insights and guidance for addressing the issue of water supply–demand disparities.
{"title":"Optimal allocation planning of regional water resources with multiple objectives using improved firefly algorithm","authors":"Zhiling Yang, Zhaocai Wang, Zhiyuan Yao, Xiaoguang Bao","doi":"10.2166/aqua.2024.251","DOIUrl":"https://doi.org/10.2166/aqua.2024.251","url":null,"abstract":"\u0000 \u0000 Population growth and economic development, coupled with water pollution and the frequent occurrence of extreme weather, have led to a growing contradiction between water supply and demand in some regions. To address this challenge, rational and optimal allocation of regional water resources has emerged as a crucial approach. This study focuses on creating a comprehensive model for optimizing regional water resource allocation, taking into account social, economic, and ecological factors. In addition, three innovative modifications are introduced to the firefly algorithm (FA), resulting in the development of the improved firefly algorithm (IFA). The effectiveness of IFA is validated through experiments involving nine benchmark functions. The results highlight the improved search efficiency and convergence achieved by IFA compared to other intelligent algorithms. Moreover, the application of IFA in solving the water resource allocation challenge in Shannxi Province, China, for 2020 and 2021 demonstrates a reduction in the overall water shortage rate to 4.69 and 1.72%, at a 75% guarantee rate. This reduction in water shortages contributes to addressing future scarcities. The proposed allocation scheme offers comprehensive benefits and provides crucial technical support for water resource management. Ultimately, this study offers valuable insights and guidance for addressing the issue of water supply–demand disparities.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374281","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}
The implementation of environmental and sustainable development goal (SDG) education helps to cultivate people's awareness of environmental protection and the concept of SDG, and is conducive to the protection and management of the environment. However, due to the weak awareness of education and lack of environmental protection knowledge in the environment and SDG education, environmental protection work has been affected. Therefore, this article proposed the implementation strategy of environment and SDG education from the perspective of green ecology. This research utilized datasets agricultural biomass accumulated from five cities of Guandong (i.e., Foshan [F], Heshan [H], Nanxiong [N], and Shantou [S]) province, China. Through experimental research, the utilization rate of agricultural waste and utilization ratio of straw was explored by using data envelopment analysis, and then, the environmental awareness of students and the environmental education level of teachers under the environmental and SDG education strategies of green ecological concept were combined. The results showed that the proportion of straw waste biomass utilization in S city was the highest among the four cities; the implementation strategy of environment and SDG education proposed in this article can enhance students’ awareness of environmental protection by 5.21% and improve environmental education level of teachers by 9.51%.
{"title":"Research on environment and sustainable development education under the background of green ecology","authors":"Gang Liu, Xu Huan, Xin Deng","doi":"10.2166/aqua.2024.325","DOIUrl":"https://doi.org/10.2166/aqua.2024.325","url":null,"abstract":"\u0000 The implementation of environmental and sustainable development goal (SDG) education helps to cultivate people's awareness of environmental protection and the concept of SDG, and is conducive to the protection and management of the environment. However, due to the weak awareness of education and lack of environmental protection knowledge in the environment and SDG education, environmental protection work has been affected. Therefore, this article proposed the implementation strategy of environment and SDG education from the perspective of green ecology. This research utilized datasets agricultural biomass accumulated from five cities of Guandong (i.e., Foshan [F], Heshan [H], Nanxiong [N], and Shantou [S]) province, China. Through experimental research, the utilization rate of agricultural waste and utilization ratio of straw was explored by using data envelopment analysis, and then, the environmental awareness of students and the environmental education level of teachers under the environmental and SDG education strategies of green ecological concept were combined. The results showed that the proportion of straw waste biomass utilization in S city was the highest among the four cities; the implementation strategy of environment and SDG education proposed in this article can enhance students’ awareness of environmental protection by 5.21% and improve environmental education level of teachers by 9.51%.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":"120 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140378878","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}
Cassiano Ricardo Reinehr Corrêa, A. B. De Siqueira, Paulo Renato Matos Lopes, J. A. Ambrósio, A. R. Simioni, L. D. de Vasconcelos, Eduardo Beraldo de Morais
This study presents the first-time synthesis of iron nanoparticles (FeNPs) using an aqueous extract from the baru fruit endocarp (Dipteryx alata). Characterization through scanning electron microscopy and dynamic light scattering revealed spherical shapes with an average diameter of 419.2 nm. Fourier transform infrared spectroscopy was used to identify phytochemicals in the baru fruit extract. These phytochemicals act as both reducing and stabilizing agents. X-ray diffraction confirmed the amorphous nature of the FeNPs. The Fenton-like catalytic efficiency of FeNPs was investigated for the degradation of rhodamine B (RhB) and caffeine. The impact of crucial parameters such as pH, H2O2 dosage, nanoparticle concentration, and temperature on the degradation process was assessed. At pH 3.0, with 1.0 g L−1 of FeNPs, 1% H2O2, and 45 °C, RhB and caffeine degradation reached 99.14 and 92.01%, respectively. The catalytic reaction kinetics followed a pseudo-first-order model for caffeine and a pseudo-second-order model for RhB. Phytotoxicity studies on Cucumis sativus confirmed the non-toxic nature of the degraded products of RhB and caffeine. These findings highlight the potential of FeNPs, synthesized from the baru endocarp extract, as a catalyst for removing organic pollutants. This suggests promising applications in environmental remediation and related fields.
{"title":"Green synthesis of iron nanoparticles from the baru (Dipteryx alata) endocarp extract for the efficient removal of rhodamine B and caffeine from water through the heterogeneous Fenton process","authors":"Cassiano Ricardo Reinehr Corrêa, A. B. De Siqueira, Paulo Renato Matos Lopes, J. A. Ambrósio, A. R. Simioni, L. D. de Vasconcelos, Eduardo Beraldo de Morais","doi":"10.2166/aqua.2024.300","DOIUrl":"https://doi.org/10.2166/aqua.2024.300","url":null,"abstract":"\u0000 \u0000 This study presents the first-time synthesis of iron nanoparticles (FeNPs) using an aqueous extract from the baru fruit endocarp (Dipteryx alata). Characterization through scanning electron microscopy and dynamic light scattering revealed spherical shapes with an average diameter of 419.2 nm. Fourier transform infrared spectroscopy was used to identify phytochemicals in the baru fruit extract. These phytochemicals act as both reducing and stabilizing agents. X-ray diffraction confirmed the amorphous nature of the FeNPs. The Fenton-like catalytic efficiency of FeNPs was investigated for the degradation of rhodamine B (RhB) and caffeine. The impact of crucial parameters such as pH, H2O2 dosage, nanoparticle concentration, and temperature on the degradation process was assessed. At pH 3.0, with 1.0 g L−1 of FeNPs, 1% H2O2, and 45 °C, RhB and caffeine degradation reached 99.14 and 92.01%, respectively. The catalytic reaction kinetics followed a pseudo-first-order model for caffeine and a pseudo-second-order model for RhB. Phytotoxicity studies on Cucumis sativus confirmed the non-toxic nature of the degraded products of RhB and caffeine. These findings highlight the potential of FeNPs, synthesized from the baru endocarp extract, as a catalyst for removing organic pollutants. This suggests promising applications in environmental remediation and related fields.","PeriodicalId":513288,"journal":{"name":"AQUA — Water Infrastructure, Ecosystems and Society","volume":" 81","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140384652","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：