Pub Date : 2024-08-23DOI: 10.1021/acsestwater.4c00438
Xi Quan, Jun Zhang
As an essential element for all living organisms, excessive phosphate ranks as a primary contributor to eutrophication in aquatic regions. Coordinative modification of metal–organic frameworks (MOFs) with porous molecular cages can enhance their adsorption selectivity for phosphate. In this study, a novel MOF@porous coordination cages (MOF@PCCs) was developed by modifying PCCs with s-triazine, 2,4,6-tris(2-pyridyl)-s-triazine (tpt), and 2,4,6-tris[4-(pyridin-4-ylmethoxy)phenyl][1,3,5]triazine (tpypt). The results indicated that cyclodextrin-MOF@PCC-L (CD-MOF@PCC-L) prepared with tpypt reached an equilibrium adsorption capacity of 164.5 mg/g within 3 min. Notably, factors such as acidic-neutral pH and low concentrations of anions had negligible effects on phosphate adsorption, while humic acid and methyl orange exhibited a noticeable inhibitory effect on phosphate adsorption. CD-MOF@PCC-L can last for ∼2486 bed volumes before the phosphate concentration in the secondary effluent exceeds the average limit of 0.5 mg/L. Superior phosphorus removal efficiency in adsorption/desorption experiments highlights its potential for effective reclaimed water treatment applications. Comprehensive spectroscopic and computational analyses elucidate the multifaceted phosphate adsorption mechanisms on CD-MOF@PCC-L. Subsequently, the study proposed the application of CD-MOF@PCC after phosphate adsorption for further adsorption removal of humic acid and methyl orange. This study provides innovative insights into microinterface adsorption and an effective strategy for the sequential removal of pollutants via employing phosphate as a bridge.
{"title":"Phosphate Adsorption from Reclaimed Water via External Cage Expansion on CD-MOF Micro-Interface","authors":"Xi Quan, Jun Zhang","doi":"10.1021/acsestwater.4c00438","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00438","url":null,"abstract":"As an essential element for all living organisms, excessive phosphate ranks as a primary contributor to eutrophication in aquatic regions. Coordinative modification of metal–organic frameworks (MOFs) with porous molecular cages can enhance their adsorption selectivity for phosphate. In this study, a novel MOF@porous coordination cages (MOF@PCCs) was developed by modifying PCCs with s-triazine, 2,4,6-tris(2-pyridyl)-s-triazine (tpt), and 2,4,6-tris[4-(pyridin-4-ylmethoxy)phenyl][1,3,5]triazine (tpypt). The results indicated that cyclodextrin-MOF@PCC-L (CD-MOF@PCC-L) prepared with tpypt reached an equilibrium adsorption capacity of 164.5 mg/g within 3 min. Notably, factors such as acidic-neutral pH and low concentrations of anions had negligible effects on phosphate adsorption, while humic acid and methyl orange exhibited a noticeable inhibitory effect on phosphate adsorption. CD-MOF@PCC-L can last for ∼2486 bed volumes before the phosphate concentration in the secondary effluent exceeds the average limit of 0.5 mg/L. Superior phosphorus removal efficiency in adsorption/desorption experiments highlights its potential for effective reclaimed water treatment applications. Comprehensive spectroscopic and computational analyses elucidate the multifaceted phosphate adsorption mechanisms on CD-MOF@PCC-L. Subsequently, the study proposed the application of CD-MOF@PCC after phosphate adsorption for further adsorption removal of humic acid and methyl orange. This study provides innovative insights into microinterface adsorption and an effective strategy for the sequential removal of pollutants via employing phosphate as a bridge.","PeriodicalId":7078,"journal":{"name":"ACS Es&t Water","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142203208","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}
Pub Date : 2024-08-22DOI: 10.1021/acsestwater.4c00170
Matthew A. Coble, Karyne M. Rogers, Jay Curtis, Rob van der Raaij, David J. Byrne, Axel Suckow, Uwe Morgenstern
Groundwater denitrification studies require the careful quantification of excess N2 to determine that nitrate reduction has taken place. The measurement of corresponding noble gases Ne and Ar quantifies excess air N2 and in situ degassing. We compare, for the first time, measurement results from a high-precision quadrupole mass spectrometer (QMS) with a low-cost PlasmaDetek (plasma emission detector) GC add-on capable of analyzing all three gases (N2, Ne, Ar) from a single sample to obtain reliable data for denitrification calculations. Both methods can be used to accurately measure N2, Ne, and Ar concentrations that are reproducible and overlap within 2σ analytical uncertainty. Moreover, we discuss different groundwater headspace gas collection methods and show that Giggenbach bottles, while limited when storing samples for long-time periods (months or more), are reliable over shorter storage periods (up to 2 or 3 weeks), compared to cold-pressed copper tube collection methods, which are deemed stable over long timeframes (years). This novel plasma detector method will enable laboratories that do not have state-of-the-art noble gas facilities to undertake reliable measurement of dissolved groundwater gases (N2, Ne, and Ar) for groundwater denitrification studies, understand the implications of natural subsurface nitrate attenuation, and improve catchment nitrate budgets.
地下水脱硝研究需要仔细量化过量的 N2，以确定硝酸盐还原已经发生。对相应惰性气体 Ne 和 Ar 的测量可量化空气中过量的 N2 和原地脱气。我们首次比较了高精度四极杆质谱仪（QMS）与低成本 PlasmaDetek（等离子体发射探测器）气相色谱附加装置的测量结果，后者能够从单一样品中分析所有三种气体（N2、Ne、Ar），从而获得用于脱硝计算的可靠数据。这两种方法都可用于精确测量 N2、Ne 和 Ar 的浓度，其重复性和重叠性在 2σ 分析不确定性范围内。此外，我们还讨论了不同的地下水顶空气体采集方法，并表明吉根巴赫瓶虽然在长时间（数月或更长时间）储存样本时受到限制，但在较短储存时间（最多 2 或 3 周）内是可靠的，而冷压铜管采集方法则被认为在长时间（数年）内是稳定的。这种新型等离子检测器方法将使不具备先进惰性气体设施的实验室能够可靠地测量溶解的地下水气体（N2、Ne 和 Ar），用于地下水反硝化研究，了解地下自然硝酸盐衰减的影响，并改进集水区硝酸盐预算。
{"title":"New Method for Measuring Dissolved Ne, Ar, and N2 in Water Using a Plasma Emission Detector: Application for Quantifying Denitrification in Groundwater","authors":"Matthew A. Coble, Karyne M. Rogers, Jay Curtis, Rob van der Raaij, David J. Byrne, Axel Suckow, Uwe Morgenstern","doi":"10.1021/acsestwater.4c00170","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00170","url":null,"abstract":"Groundwater denitrification studies require the careful quantification of excess N<sub>2</sub> to determine that nitrate reduction has taken place. The measurement of corresponding noble gases Ne and Ar quantifies excess air N<sub>2</sub> and in situ degassing. We compare, for the first time, measurement results from a high-precision quadrupole mass spectrometer (QMS) with a low-cost PlasmaDetek (plasma emission detector) GC add-on capable of analyzing all three gases (N<sub>2</sub>, Ne, Ar) from a single sample to obtain reliable data for denitrification calculations. Both methods can be used to accurately measure N<sub>2</sub>, Ne, and Ar concentrations that are reproducible and overlap within 2σ analytical uncertainty. Moreover, we discuss different groundwater headspace gas collection methods and show that Giggenbach bottles, while limited when storing samples for long-time periods (months or more), are reliable over shorter storage periods (up to 2 or 3 weeks), compared to cold-pressed copper tube collection methods, which are deemed stable over long timeframes (years). This novel plasma detector method will enable laboratories that do not have state-of-the-art noble gas facilities to undertake reliable measurement of dissolved groundwater gases (N<sub>2</sub>, Ne, and Ar) for groundwater denitrification studies, understand the implications of natural subsurface nitrate attenuation, and improve catchment nitrate budgets.","PeriodicalId":7078,"journal":{"name":"ACS Es&t Water","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142203209","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}
Pub Date : 2024-08-19DOI: 10.1021/acsestwater.4c00241
Anna Yukhymchuk, Daria Zhukova, Nataliia Prybora, Nataliya Stolyarchuk, Oleksandr Bondarchuk, Halyna Bodnár Yankovych, Inna V. Melnyk
Sustainable waste management is the recycling, reusing, and recovery of wastes from natural sources. This research studied the conversion of Pinus sylvestris residues into sustainable biochars with improved properties for the adsorption of Co(II) and Ni(II) with further usage of spent biochars in the removal of carbamazepine. The biochars possessed high surface areas and abundant chemical composition with equilibrium adsorption capacities of 0.38 mmol/g for Co(II) and 0.48 mmol/g for Ni(II), forming cobalt phosphate and nickel hydroxide on the biochar surface. The laden biochars efficiently removed carbamazepine through adsorption and under UV light, following a first-order kinetic model with rate constants ranging from 0.0031 to 0.0042 min–1 and achieving an efficiency of over 80%. The complex interaction mechanisms were responsible for the reduction of the carbamazepine concentration in the studied systems. This research demonstrates that waste wood raw materials can be used as synergistic multifunctional materials.
{"title":"Waste-to-Wealth: Unlocking the Potential of Pine Sawdust Biochar for Adsorption of Cobalt(II) and Nickel(II) Ions and Sustainable Elimination of Carbamazepine from Aqueous Solutions","authors":"Anna Yukhymchuk, Daria Zhukova, Nataliia Prybora, Nataliya Stolyarchuk, Oleksandr Bondarchuk, Halyna Bodnár Yankovych, Inna V. Melnyk","doi":"10.1021/acsestwater.4c00241","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00241","url":null,"abstract":"Sustainable waste management is the recycling, reusing, and recovery of wastes from natural sources. This research studied the conversion of <i>Pinus sylvestris</i> residues into sustainable biochars with improved properties for the adsorption of Co(II) and Ni(II) with further usage of spent biochars in the removal of carbamazepine. The biochars possessed high surface areas and abundant chemical composition with equilibrium adsorption capacities of 0.38 mmol/g for Co(II) and 0.48 mmol/g for Ni(II), forming cobalt phosphate and nickel hydroxide on the biochar surface. The laden biochars efficiently removed carbamazepine through adsorption and under UV light, following a first-order kinetic model with rate constants ranging from 0.0031 to 0.0042 min<sup>–1</sup> and achieving an efficiency of over 80%. The complex interaction mechanisms were responsible for the reduction of the carbamazepine concentration in the studied systems. This research demonstrates that waste wood raw materials can be used as synergistic multifunctional materials.","PeriodicalId":7078,"journal":{"name":"ACS Es&t Water","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142203210","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}
Pub Date : 2024-08-19DOI: 10.1021/acsestwater.4c00273
Toby N. T. Nelson, Cristina Poleacovschi, Carl F. Weems, Ivis García, Chris R. Rehmann, Kaoru Ikuma
Natural hazards significantly impact drinking water availability and reliability, posing challenges in accessing sufficient quality and quantity. Understanding the connection between water access and perceptions of psychological resilience (defined as how individuals bounce back after facing a major trauma) can clarify its role in well-being postdisaster. This study surveyed 208 older adults in Puerto Rico (May–July 2021), aged 64–104 years, 65% of whom were female, to explore this linkage following Hurricane Maria. Results show a strong preference for bottled water with 86% of participants using it as a drinking source. Municipal tap water is the second most preferred at 71%, while well water is the least favored, used by less than 4%. A gender-specific effect was found in the association between municipal tap water consumption and psychological resilience, where municipal tap water consumption was associated with higher psychological resilience only among women. The findings suggest that although bottled water is the preferred choice, municipal tap water use is positively associated with psychological resilience among women postdisaster. Research is needed to replicate these findings to attempt to determine their consistency in other similar contexts and identify underlying reasons and future implications for disaster response and preparedness.
{"title":"Relationship between Drinking Water Sources and Perceptions of Psychological Resilience in Older Adults Following Hurricane Maria","authors":"Toby N. T. Nelson, Cristina Poleacovschi, Carl F. Weems, Ivis García, Chris R. Rehmann, Kaoru Ikuma","doi":"10.1021/acsestwater.4c00273","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00273","url":null,"abstract":"Natural hazards significantly impact drinking water availability and reliability, posing challenges in accessing sufficient quality and quantity. Understanding the connection between water access and perceptions of psychological resilience (defined as how individuals bounce back after facing a major trauma) can clarify its role in well-being postdisaster. This study surveyed 208 older adults in Puerto Rico (May–July 2021), aged 64–104 years, 65% of whom were female, to explore this linkage following Hurricane Maria. Results show a strong preference for bottled water with 86% of participants using it as a drinking source. Municipal tap water is the second most preferred at 71%, while well water is the least favored, used by less than 4%. A gender-specific effect was found in the association between municipal tap water consumption and psychological resilience, where municipal tap water consumption was associated with higher psychological resilience only among women. The findings suggest that although bottled water is the preferred choice, municipal tap water use is positively associated with psychological resilience among women postdisaster. Research is needed to replicate these findings to attempt to determine their consistency in other similar contexts and identify underlying reasons and future implications for disaster response and preparedness.","PeriodicalId":7078,"journal":{"name":"ACS Es&t Water","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142203211","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 compounds generated during wastewater treatment processes might increase the complexity and chemical risk assessment of wastewater-derived dissolved organic matter (DOM) released into receiving water. This study applied Fourier transform ion cyclotron resonance mass spectrometry to investigate the dynamic changes in wastewater composition at the molecular level in a full-scale municipal wastewater treatment plant (WWTP). Approximately 63.1% of the detected molecules in the effluent were derived from the influent. N/S-containing molecules were more effectively removed than CHO molecules in the studied WWTP. The dealkylation and oxygen addition reactions of N-containing molecules, along with the predominant N-addition reactions of removed molecules observed in anaerobic and oxic tanks, contributed to the higher N/Cwa in the effluent than in the influent. However, the S-containing molecules could be effectively removed via S-loss reactions in the anoxic/anaerobic/oxic (inverted A/A/O) processes. Dealkylation and oxygen addition reactions were found to be the predominant reaction types in all tanks of the inverted A/A/O processes. More oxidized molecules with higher aromaticity and unsaturation degree were observed in the effluent than in the influent. Our findings provide a comprehensive view of the transformation of wastewater DOM in a full-scale WWTP and offer valuable insights into effluent water quality.
废水处理过程中产生的化合物可能会增加废水中溶解有机物（DOM）释放到受纳水体中的复杂性和化学风险评估。本研究采用傅立叶变换离子回旋共振质谱法研究了大规模城市污水处理厂（WWTP）中废水成分在分子水平上的动态变化。在废水中检测到的分子中，约有 63.1% 来自进水。在所研究的污水处理厂中，含 N/S 分子的去除率高于 CHO 分子。含 N 分子的脱烷基和加氧反应，以及在厌氧池和缺氧池中观察到的被去除分子的主要 N 加成反应，导致出水中的 N/Cwa 高于进水中的 N/Cwa。不过，在缺氧/厌氧/缺氧（倒置 A/A/O）过程中，含 S 分子可通过 S 损失反应有效去除。在所有倒置 A/A/O 过程中，脱烷基和加氧反应都是最主要的反应类型。与进水相比，出水中出现了更多芳香度和不饱和度更高的氧化分子。我们的研究结果全面展示了全规模污水处理厂中废水 DOM 的转化过程，并为了解出水水质提供了宝贵的见解。
{"title":"Molecular Insights into the Transformation of Dissolved Organic Matter in a Full-Scale Wastewater Treatment Plant","authors":"Yuan Wen, Lei Dong, Jihong Xu, Xin Zhang, Lushi Lian, Xiaohong Guan","doi":"10.1021/acsestwater.4c00534","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00534","url":null,"abstract":"The compounds generated during wastewater treatment processes might increase the complexity and chemical risk assessment of wastewater-derived dissolved organic matter (DOM) released into receiving water. This study applied Fourier transform ion cyclotron resonance mass spectrometry to investigate the dynamic changes in wastewater composition at the molecular level in a full-scale municipal wastewater treatment plant (WWTP). Approximately 63.1% of the detected molecules in the effluent were derived from the influent. N/S-containing molecules were more effectively removed than CHO molecules in the studied WWTP. The dealkylation and oxygen addition reactions of N-containing molecules, along with the predominant N-addition reactions of removed molecules observed in anaerobic and oxic tanks, contributed to the higher N/C<sub>wa</sub> in the effluent than in the influent. However, the S-containing molecules could be effectively removed via S-loss reactions in the anoxic/anaerobic/oxic (inverted A/A/O) processes. Dealkylation and oxygen addition reactions were found to be the predominant reaction types in all tanks of the inverted A/A/O processes. More oxidized molecules with higher aromaticity and unsaturation degree were observed in the effluent than in the influent. Our findings provide a comprehensive view of the transformation of wastewater DOM in a full-scale WWTP and offer valuable insights into effluent water quality.","PeriodicalId":7078,"journal":{"name":"ACS Es&t Water","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142203213","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}
Pub Date : 2024-08-16DOI: 10.1021/acsestwater.4c00393
Nadia Dikareva, Kevin S. Simon
Streams are the primary conduits through which microplastics are transported from land to sea. Attributes of the plastic particles and of the streams are both likely to influence how microplastic moves, but there are few empirical studies of microplastic transport dynamics in real systems. We adopted the spiralling technique commonly used to measure nutrient cycling in streams to quantify transport distances and deposition velocities of microplastics in streams with varying geomorphological structure and level of human modification. We conducted pulse releases of trace amounts of three size classes of five different polymers spanning a density gradient in 15 streams. The streams were typical of the range of human modification in urban environments, from seminatural to highly modified. Transport distances of microplastic ranged from <1 to 111 m, with distances declining with particle size. Neutrally buoyant polymers had the longest transport distances and lowest deposition velocities. Streams that had been modified into concrete channels were the most effective in transporting microplastics downstream, as indicated by relatively low deposition velocities and long transport distances of microplastics. Our results suggest that the movement of microplastic pollution in streams depends on the physical characteristics of the stream more than on plastic properties.
{"title":"Factors Controlling Transport Dynamics of Microplastics in Streams","authors":"Nadia Dikareva, Kevin S. Simon","doi":"10.1021/acsestwater.4c00393","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00393","url":null,"abstract":"Streams are the primary conduits through which microplastics are transported from land to sea. Attributes of the plastic particles and of the streams are both likely to influence how microplastic moves, but there are few empirical studies of microplastic transport dynamics in real systems. We adopted the spiralling technique commonly used to measure nutrient cycling in streams to quantify transport distances and deposition velocities of microplastics in streams with varying geomorphological structure and level of human modification. We conducted pulse releases of trace amounts of three size classes of five different polymers spanning a density gradient in 15 streams. The streams were typical of the range of human modification in urban environments, from seminatural to highly modified. Transport distances of microplastic ranged from <1 to 111 m, with distances declining with particle size. Neutrally buoyant polymers had the longest transport distances and lowest deposition velocities. Streams that had been modified into concrete channels were the most effective in transporting microplastics downstream, as indicated by relatively low deposition velocities and long transport distances of microplastics. Our results suggest that the movement of microplastic pollution in streams depends on the physical characteristics of the stream more than on plastic properties.","PeriodicalId":7078,"journal":{"name":"ACS Es&t Water","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142203212","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}
Pub Date : 2024-08-16DOI: 10.1021/acsestwater.4c00295
Lina Yu, Zhe Tian, Chen Wang, Wenxiu Chen, Lan Zhang, Xiao Zhang, Song Tang, Jianxin Zhang, Lixin Yu, Peng Wang, Dan Gao, Zhe Wang, Wenhui Gao, Tong Zhang, Yu Zhang, Wei An, Min Yang
This study tried to reveal how the implementation and cancellation of the dynamic zero-COVID policy could affect the development of the epidemic through wastewater surveillance of SARS-CoV-2 in Beijing during its first COVID-19 surge. A total of 443 24 h composite wastewater samples were taken from seven manholes and 10 wastewater treatment plants immediately on December 7, 2022, when the new COVID-19 policy was implemented, for the detection of SARS-CoV-2. The results showed that the first COVID-19 surge in Beijing was characterized by a rapid outbreak, short duration (one month), and extremely high infection rate (92.8%). Wastewater tiling amplicon sequencing showed that the main subvariant for this surge was BF.7.14 (65%), which has never caused an outbreak in other countries in the world. The variant BF.7.14 appeared in Beijing on August 15, 2022, as an imported case and then managed to retain and become a dominant variant as the strict dynamic zero policy had blocked the entry of other more infectious SARS-CoV-2 variants. This is the first study to capture the unique picture of the epidemic development in Beijing during its first COVID-19 surge, demonstrating that the strict dynamic zero-COVID strategy could shape the infection patterns greatly.
{"title":"Implementation and Cancellation of the Dynamic Zero-COVID Policy Led to a Steep Transient Peak in the First COVID-19 Surge in Beijing Dominated by a Nonprevalent SARS-CoV-2 Variant","authors":"Lina Yu, Zhe Tian, Chen Wang, Wenxiu Chen, Lan Zhang, Xiao Zhang, Song Tang, Jianxin Zhang, Lixin Yu, Peng Wang, Dan Gao, Zhe Wang, Wenhui Gao, Tong Zhang, Yu Zhang, Wei An, Min Yang","doi":"10.1021/acsestwater.4c00295","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00295","url":null,"abstract":"This study tried to reveal how the implementation and cancellation of the dynamic zero-COVID policy could affect the development of the epidemic through wastewater surveillance of SARS-CoV-2 in Beijing during its first COVID-19 surge. A total of 443 24 h composite wastewater samples were taken from seven manholes and 10 wastewater treatment plants immediately on December 7, 2022, when the new COVID-19 policy was implemented, for the detection of SARS-CoV-2. The results showed that the first COVID-19 surge in Beijing was characterized by a rapid outbreak, short duration (one month), and extremely high infection rate (92.8%). Wastewater tiling amplicon sequencing showed that the main subvariant for this surge was BF.7.14 (65%), which has never caused an outbreak in other countries in the world. The variant BF.7.14 appeared in Beijing on August 15, 2022, as an imported case and then managed to retain and become a dominant variant as the strict dynamic zero policy had blocked the entry of other more infectious SARS-CoV-2 variants. This is the first study to capture the unique picture of the epidemic development in Beijing during its first COVID-19 surge, demonstrating that the strict dynamic zero-COVID strategy could shape the infection patterns greatly.","PeriodicalId":7078,"journal":{"name":"ACS Es&t Water","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142203214","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}
Pub Date : 2024-08-15DOI: 10.1021/acsestwater.4c00585
Tonni Agustiono Kurniawan, Kai Chen Goh, Hui Hwang Goh, Dongdong Zhang, Meihui Jiang, Wei Dai, Imran Ali, Mohd Hafiz Dzarfan Othman, Faissal Aziz, Abdelkader Anouzla, Soufiane Haddout, Christia Meidiana
In the face of escalating climate change impacts, Southeast Asia is witnessing a growing urgency to fortify regional cities against extreme temperatures and the exacerbating effects of El Niño events. This work delves into the role of urban water technologies in bolstering heat-resilient infrastructure across the region. This work also assesses urban water technologies that can contribute to the development of heat-resilient infrastructure in urban areas. This involves examining innovative approaches that can help mitigate the impacts of extreme temperatures on water infrastructure and enhance its resilience to climate change. They include green infrastructure, decentralized water systems, and advanced cooling technologies that have the potential to improve the resilience of urban water infrastructure to heat stress and extreme temperatures. Through empirical studies, this study underscores the imperative for proactive measures to enhance urban resilience in the region. The implications of this work offer practical insights for policymakers, urban planners, and stakeholders to bolster climate resilience in the region, emphasizing the role of water technologies in mitigating risks and enhancing adaptive capacity. By integrating urban technologies such as advanced cooling systems and green infrastructure, cities in the southeast Asia region not only can mitigate heat-related risks but also foster sustainable development pathways.
{"title":"Strengthening Climate Resilience: Urban Water Technologies for Heat-Resilient Physical Infrastructure in Southeast Asia Cities Amidst Extreme Temperature Events and El Niño Challenges","authors":"Tonni Agustiono Kurniawan, Kai Chen Goh, Hui Hwang Goh, Dongdong Zhang, Meihui Jiang, Wei Dai, Imran Ali, Mohd Hafiz Dzarfan Othman, Faissal Aziz, Abdelkader Anouzla, Soufiane Haddout, Christia Meidiana","doi":"10.1021/acsestwater.4c00585","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00585","url":null,"abstract":"In the face of escalating climate change impacts, Southeast Asia is witnessing a growing urgency to fortify regional cities against extreme temperatures and the exacerbating effects of El Niño events. This work delves into the role of urban water technologies in bolstering heat-resilient infrastructure across the region. This work also assesses urban water technologies that can contribute to the development of heat-resilient infrastructure in urban areas. This involves examining innovative approaches that can help mitigate the impacts of extreme temperatures on water infrastructure and enhance its resilience to climate change. They include green infrastructure, decentralized water systems, and advanced cooling technologies that have the potential to improve the resilience of urban water infrastructure to heat stress and extreme temperatures. Through empirical studies, this study underscores the imperative for proactive measures to enhance urban resilience in the region. The implications of this work offer practical insights for policymakers, urban planners, and stakeholders to bolster climate resilience in the region, emphasizing the role of water technologies in mitigating risks and enhancing adaptive capacity. By integrating urban technologies such as advanced cooling systems and green infrastructure, cities in the southeast Asia region not only can mitigate heat-related risks but also foster sustainable development pathways.","PeriodicalId":7078,"journal":{"name":"ACS Es&t Water","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142203220","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}
Pub Date : 2024-08-15DOI: 10.1021/acsestwater.4c00063
Laura O Cossu, Sérgio Francisco De Aquino, César Rossas Mota Filho, Cindy J Smith, Marta Vignola
Pesticide pollution of surface water is a global threat to drinking water safety. The need for improved drinking water treatment methods is discussed by using Brazil as a case study. Brazil’s agriculture is intensive, and pesticide consumption is high, while current drinking water treatment methods are inadequate for effectively removing pesticides. Available data on surface water contamination in Brazil show widespread occurrence of pesticides in natural waters, thereby putting pressure on the water treatment system and threatening the quality and safety of drinking water. Pesticide concentrations in drinking water frequently exceeded the maximum permissible concentrations if EU regulations (0.1 μg/L) were applied, highlighting the need for improvements in drinking water treatment. (Advanced) drinking water treatment for the removal of pesticides has been intensely researched over the past decade. However, challenges such as high cost and energy intensity, as well as the production of hazardous byproducts, must be assessed critically. Safely managed drinking water is crucial to the sustainable development of low- and middle-income countries and can be achieved only through appropriate technology. Engineered biofiltration has been put forward as a sustainable alternative to conventional and advanced drinking water treatment. This review highlights the promising potential of engineered biofiltration and its associated challenges.
{"title":"Review on Pesticide Contamination and Drinking Water Treatment in Brazil: The Need for Improved Treatment Methods","authors":"Laura O Cossu, Sérgio Francisco De Aquino, César Rossas Mota Filho, Cindy J Smith, Marta Vignola","doi":"10.1021/acsestwater.4c00063","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00063","url":null,"abstract":"Pesticide pollution of surface water is a global threat to drinking water safety. The need for improved drinking water treatment methods is discussed by using Brazil as a case study. Brazil’s agriculture is intensive, and pesticide consumption is high, while current drinking water treatment methods are inadequate for effectively removing pesticides. Available data on surface water contamination in Brazil show widespread occurrence of pesticides in natural waters, thereby putting pressure on the water treatment system and threatening the quality and safety of drinking water. Pesticide concentrations in drinking water frequently exceeded the maximum permissible concentrations if EU regulations (0.1 μg/L) were applied, highlighting the need for improvements in drinking water treatment. (Advanced) drinking water treatment for the removal of pesticides has been intensely researched over the past decade. However, challenges such as high cost and energy intensity, as well as the production of hazardous byproducts, must be assessed critically. Safely managed drinking water is crucial to the sustainable development of low- and middle-income countries and can be achieved only through appropriate technology. Engineered biofiltration has been put forward as a sustainable alternative to conventional and advanced drinking water treatment. This review highlights the promising potential of engineered biofiltration and its associated challenges.","PeriodicalId":7078,"journal":{"name":"ACS Es&t Water","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142203224","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}
Pub Date : 2024-08-15DOI: 10.1021/acsestwater.4c00116
Ansita G. Pradipta, Ho H. Loc, Sigit Nurhady, Murtinigrum, Sigit S. Arif
Volcanic eruptions transport substantial amounts of sediment into river systems. It damages irrigation structures that depend on the nearby river for water delivery, reducing the conveyance efficiency. This study aims to propose an efficient approach for the management of sand traps as the main sediment barriers in irrigation networks within the Progo-Opak-Serang (POS) Volcanic Basin. It is accomplished by a measurable approach: a mathematical framework executed with the Hydrologic Engineering Center’s River Analysis System (HEC-RAS). This study focuses on selected sand traps: Badran, Blawong, and Pengasih. The results show that the calibrated and validated Manning’s coefficients of Badran, Blawong, and Pengasih Sand Traps are 0.014, 0.020, and 0.025, respectively. The combination of Thomas as a sorting method, Rubey as a fall velocity method, and Laursen as a transport function can represent the transport parameters of the sand traps within the POS Basin. The recommended flushing discharge and duration for Badran, Blawong, and Pengasih Sand Traps are 4, 4.4, and 1.9 m3/s and 150, 50, and 45 min, respectively, while the flushing frequency is 4, 3, and 3 times a year. The existing sand trap performance in Badran is less effective, while that of Blawong and Pengasih is less efficient. This study assists in improving food production and security by promoting sustainable irrigation systems.
{"title":"Managing Irrigation Sediment Barriers in a Tropical Volcanic Basin through Mathematical Model","authors":"Ansita G. Pradipta, Ho H. Loc, Sigit Nurhady, Murtinigrum, Sigit S. Arif","doi":"10.1021/acsestwater.4c00116","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00116","url":null,"abstract":"Volcanic eruptions transport substantial amounts of sediment into river systems. It damages irrigation structures that depend on the nearby river for water delivery, reducing the conveyance efficiency. This study aims to propose an efficient approach for the management of sand traps as the main sediment barriers in irrigation networks within the Progo-Opak-Serang (POS) Volcanic Basin. It is accomplished by a measurable approach: a mathematical framework executed with the Hydrologic Engineering Center’s River Analysis System (HEC-RAS). This study focuses on selected sand traps: Badran, Blawong, and Pengasih. The results show that the calibrated and validated Manning’s coefficients of Badran, Blawong, and Pengasih Sand Traps are 0.014, 0.020, and 0.025, respectively. The combination of Thomas as a sorting method, Rubey as a fall velocity method, and Laursen as a transport function can represent the transport parameters of the sand traps within the POS Basin. The recommended flushing discharge and duration for Badran, Blawong, and Pengasih Sand Traps are 4, 4.4, and 1.9 m<sup>3</sup>/s and 150, 50, and 45 min, respectively, while the flushing frequency is 4, 3, and 3 times a year. The existing sand trap performance in Badran is less effective, while that of Blawong and Pengasih is less efficient. This study assists in improving food production and security by promoting sustainable irrigation systems.","PeriodicalId":7078,"journal":{"name":"ACS Es&t Water","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226141","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}
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