Pub Date : 2024-11-05DOI: 10.1016/j.marpolbul.2024.117220
Rincheon Jeon , Seung-Hee Kim , Dong-Hun Lee , Yusang Cho , Youngnam Kim , Seongjin Hong , Kyung-Hoon Shin
We tested an integrated multi-isotopic analysis framework to quantitatively estimate anthropogenic organic matter (OM) loads in different land-use types of a watershed (Lake Shihwa, South Korea). The isotopic signatures of increased bulk-element abundances in urban areas and industrial complexes may reflect the mixed contributions of natural and anthropogenic sources. Together with the predominant abundance of n-alkanes and polycyclic aromatic hydrocarbons at both boundaries, specific indices derived from their abundance may be indicative of mixed contributions from terrestrial plants, petroleum, and combustion deposited through various pathways (e.g., atmospheric deposition, outfall pipes, and surface runoff). Based on these properties, compound isotopic signatures (δ13CC27+C29+C31, δ13CFl, δ13CPyr, δ13CBaA+Chry, δ13CIcdP, δ13CBghiP,) for both land-use types may provide significant evidence of an increase in anthropogenic derived-OM loads (> 90 %) in Lake Shihwa. This approach suggests that total organic carbon–weighted source apportionments can provide useful quantitative estimates of OM loads within complex river systems.
{"title":"Apportioning sources of natural and anthropogenic organic matter in sediment from Lake Shihwa: An integrated approach using molecular ratios and compound-specific stable-isotope analysis","authors":"Rincheon Jeon , Seung-Hee Kim , Dong-Hun Lee , Yusang Cho , Youngnam Kim , Seongjin Hong , Kyung-Hoon Shin","doi":"10.1016/j.marpolbul.2024.117220","DOIUrl":"10.1016/j.marpolbul.2024.117220","url":null,"abstract":"<div><div>We tested an integrated multi-isotopic analysis framework to quantitatively estimate anthropogenic organic matter (OM) loads in different land-use types of a watershed (Lake Shihwa, South Korea). The isotopic signatures of increased bulk-element abundances in urban areas and industrial complexes may reflect the mixed contributions of natural and anthropogenic sources. Together with the predominant abundance of <em>n</em>-alkanes and polycyclic aromatic hydrocarbons at both boundaries, specific indices derived from their abundance may be indicative of mixed contributions from terrestrial plants, petroleum, and combustion deposited through various pathways (e.g., atmospheric deposition, outfall pipes, and surface runoff). Based on these properties, compound isotopic signatures (δ<sup>13</sup>C<sub>C27+C29+C31</sub>, δ<sup>13</sup>C<sub>Fl</sub>, δ<sup>13</sup>C<sub>Pyr</sub>, δ<sup>13</sup>C<sub>BaA+Chry</sub>, δ<sup>13</sup>C<sub>IcdP</sub>, δ<sup>13</sup>C<sub>BghiP</sub>,) for both land-use types may provide significant evidence of an increase in anthropogenic derived-OM loads (> 90 %) in Lake Shihwa. This approach suggests that total organic carbon–weighted source apportionments can provide useful quantitative estimates of OM loads within complex river systems.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117220"},"PeriodicalIF":5.3,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-04DOI: 10.1016/j.marpolbul.2024.117226
Richard Kindong , Dongyan Han , Njomoue Achille Pandong , Ousmane Sarr , Feng Wu , Siquan Tian
The marine waters off the coast of northwest Africa are known for being highly productive upwelling regions in the Eastern Atlantic Ocean. The present study evaluated the combined effects of climate change and sustainable fishing levels on the long-term sustainability of European anchovy (Engraulis encrasicolus), a target pelagic species found along the West African coastal waters. The present study used survey biomass time series from survey vessels and species catch time series from commercial fisheries operating in the region. Hence, we investigated the relationship between fishing dynamics and environmental factors. The status of anchovy stock was determined by analyzing changes in different initial depletion rates using a state-space Bayesian surplus production model. We used Principal component analysis to identify the essential environmental data set, while Generalized Additive Models (GAM) were employed to determine the influence of the environment on fisheries. The stock assessment model revealed that fishing intensity did not affect the abundance of anchovy in the region even when tested under different biomass depletion scenarios. However, by employing GAMs, the research assessed the impact of environmental variables on fish biomass, indicating that sea surface temperature (SST) significantly influences anchovy abundance in the region. The latitudinal gradient also had a significant influence on this species' abundance. These findings underscore the vulnerability of the small-scale fisheries sector in the tropical upwelling zone to climate change. The study concludes that even in the face of potential negative impacts from environmental factors, optimizing fishing methods can contribute to the preservation of pelagic resources in the region. It emphasizes the importance of managing fishery resources in a sustainable, economically viable, and socially acceptable way.
{"title":"European anchovy's abundance, more affected by climatic conditions than fishing activities in the northwest African waters","authors":"Richard Kindong , Dongyan Han , Njomoue Achille Pandong , Ousmane Sarr , Feng Wu , Siquan Tian","doi":"10.1016/j.marpolbul.2024.117226","DOIUrl":"10.1016/j.marpolbul.2024.117226","url":null,"abstract":"<div><div>The marine waters off the coast of northwest Africa are known for being highly productive upwelling regions in the Eastern Atlantic Ocean. The present study evaluated the combined effects of climate change and sustainable fishing levels on the long-term sustainability of European anchovy (<em>Engraulis encrasicolus</em>), a target pelagic species found along the West African coastal waters. The present study used survey biomass time series from survey vessels and species catch time series from commercial fisheries operating in the region. Hence, we investigated the relationship between fishing dynamics and environmental factors. The status of anchovy stock was determined by analyzing changes in different initial depletion rates using a state-space Bayesian surplus production model. We used Principal component analysis to identify the essential environmental data set, while Generalized Additive Models (GAM) were employed to determine the influence of the environment on fisheries. The stock assessment model revealed that fishing intensity did not affect the abundance of anchovy in the region even when tested under different biomass depletion scenarios. However, by employing GAMs, the research assessed the impact of environmental variables on fish biomass, indicating that sea surface temperature (SST) significantly influences anchovy abundance in the region. The latitudinal gradient also had a significant influence on this species' abundance. These findings underscore the vulnerability of the small-scale fisheries sector in the tropical upwelling zone to climate change. The study concludes that even in the face of potential negative impacts from environmental factors, optimizing fishing methods can contribute to the preservation of pelagic resources in the region. It emphasizes the importance of managing fishery resources in a sustainable, economically viable, and socially acceptable way.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117226"},"PeriodicalIF":5.3,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142577992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-04DOI: 10.1016/j.marpolbul.2024.117205
Laura María Pantoja-Echevarría , Ana Judith Marmolejo-Rodríguez , Felipe Galván-Magaña , Fernando R. Elorriaga-Verplancken , Arturo Tripp-Valdez , Elena Tamburin , Ariagna Lara , Jonathan Muthuswamy Ponniah , Sujitha Suresh Babu , Jorge Félix Pintueles-Tamayo , Sara Valiente , Laura Arreola-Mendoza
Mercury, cadmium, and selenium contents were quantified in sharks Mustelus henlei, M. californicus, Sphyna zygaena, and Isurus oxyrinchus, which represent important fishery resources in the western coast of Baja California Sur, Mexico. Sample compliance estimations with Mexican dietary standards and human health risks, according to provisional tolerable weekly intake (PTWI), were provided for critical population sectors, including young children, pregnant/nursing women, and adults. The estimated weekly intake was limited to 1.52 kg of M. californicus, 1.35 kg of S. zygaena, 0.5 kg of I. oxyrinchus, and 2.42 kg of M. henlei. Likewise, the Hazard Quotient (HQ) <1 and Hazard Index (THI) <1 were within safe limits; therefore, there will be no chronic noncarcinogenic health hazards in the short or long term. Carcinogenic risk is a concern mainly for children, and the most appropriate approach is for children to consume no >0.5 kg of shark meat per week.
{"title":"“Risk assessment for shark consumers exposed to mercury, selenium and cadmium in Mexico”","authors":"Laura María Pantoja-Echevarría , Ana Judith Marmolejo-Rodríguez , Felipe Galván-Magaña , Fernando R. Elorriaga-Verplancken , Arturo Tripp-Valdez , Elena Tamburin , Ariagna Lara , Jonathan Muthuswamy Ponniah , Sujitha Suresh Babu , Jorge Félix Pintueles-Tamayo , Sara Valiente , Laura Arreola-Mendoza","doi":"10.1016/j.marpolbul.2024.117205","DOIUrl":"10.1016/j.marpolbul.2024.117205","url":null,"abstract":"<div><div>Mercury, cadmium, and selenium contents were quantified in sharks <em>Mustelus henlei</em>, <em>M. californicus</em>, <em>Sphyna zygaena</em>, and <em>Isurus oxyrinchus,</em> which represent important fishery resources in the western coast of Baja California Sur, Mexico. Sample compliance estimations with Mexican dietary standards and human health risks, according to provisional tolerable weekly intake (PTWI), were provided for critical population sectors, including young children, pregnant/nursing women, and adults. The estimated weekly intake was limited to 1.52 kg of <em>M. californicus</em>, 1.35 kg of <em>S. zygaena</em>, 0.5 kg of <em>I. oxyrinchus</em>, and 2.42 kg of <em>M. henlei</em>. Likewise, the Hazard Quotient (HQ) <1 and Hazard Index (THI) <1 were within safe limits; therefore, there will be no chronic noncarcinogenic health hazards in the short or long term. Carcinogenic risk is a concern mainly for children, and the most appropriate approach is for children to consume no >0.5 kg of shark meat per week.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117205"},"PeriodicalIF":5.3,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142577993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-04DOI: 10.1016/j.marpolbul.2024.117227
Thomas Chun-Hung Lee , Winnie Lam , Nora Fung-Yee Tam , Steven Jing-Liang Xu , Chak-Lam Lee , Fred Wang-Fat Lee
Omics technology has been employed in recent research on algicidal bacteria, but previous transcriptomic studies mainly focused on bacteria or algae, neglecting their interaction. This study explores interactions between algicidal bacterium Maribacter dokdonesis P4 and target alga Karenia mikimotoi KMHK using proteomics. Proteomics responses of KMHK after co-culture with P4 in separate compartments of the transwell for 8 and 24 h were evaluated using tandem mass tags (TMT) proteomics, and changes of P4 proteomics were also assessed. Results indicated that essential metabolic processes of KMHK were disrupted after 8 h co-culture with P4. Disturbance of oxidative phosphorylation in mitochondria and electron transport chain in chloroplast raised oxidative stress, leading to endoplasmic reticulum stress and cytoskeleton collapse, and eventual death of KMHK cells. Iron complex outer-membrane receptor protein in P4 was upregulated after co-culture with KMHK for 24 h, suggesting P4 might secrete ferric siderophores, a potential algicidal substance.
{"title":"Proteomic insights of interaction between ichthyotoxic dinoflagellate Karenia mikimotoi and algicidal bacteria Maribacter dokdonensis","authors":"Thomas Chun-Hung Lee , Winnie Lam , Nora Fung-Yee Tam , Steven Jing-Liang Xu , Chak-Lam Lee , Fred Wang-Fat Lee","doi":"10.1016/j.marpolbul.2024.117227","DOIUrl":"10.1016/j.marpolbul.2024.117227","url":null,"abstract":"<div><div>Omics technology has been employed in recent research on algicidal bacteria, but previous transcriptomic studies mainly focused on bacteria or algae, neglecting their interaction. This study explores interactions between algicidal bacterium <em>Maribacter dokdonesis</em> P4 and target alga <em>Karenia mikimotoi</em> KMHK using proteomics. Proteomics responses of KMHK after co-culture with P4 in separate compartments of the transwell for 8 and 24 h were evaluated using tandem mass tags (TMT) proteomics, and changes of P4 proteomics were also assessed. Results indicated that essential metabolic processes of KMHK were disrupted after 8 h co-culture with P4. Disturbance of oxidative phosphorylation in mitochondria and electron transport chain in chloroplast raised oxidative stress, leading to endoplasmic reticulum stress and cytoskeleton collapse, and eventual death of KMHK cells. Iron complex outer-membrane receptor protein in P4 was upregulated after co-culture with KMHK for 24 h, suggesting P4 might secrete ferric siderophores, a potential algicidal substance.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117227"},"PeriodicalIF":5.3,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142577991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The busy maritime traffic and occurrence of ship accidents have led to a growing recognition of the necessity to maritime emergency resources allocation. The port emergency resource allocation is of significant importance for the maritime safety. This paper presents an optimized allocation model for port emergency resources based on the improved multi-objective particle swarm optimization (IMOPSO). The model introduces the crowding distance and improves the external archive update strategy. The particle inertia weight is adjusted and a dynamic mutation operator is incorporated. The entropy-weighted technique for order preference by similarity to an ideal solution method is also employed to identify the optimal solution. A comprehensive comparison with MOPSO has been presented and discussed. Three metrics of generational distance (GD), spacing (SP) and delta indicator (Δ) were employed for performance evaluation. The results demonstrated that the proposed IMOPSO algorithm exhibited superior performance and robustness, with average values of GD = 0.0386, SP = 0.0023 and Δ = 0.6468 for ZDT test functions. The model efficacy is further validated by a case study of oil spill dispersant configuration at Zhanjiang Port, China. Seven alternative schemes have been obtained, among which the optimal scheme is selected by the entropy-weighted TOPSIS method. The overall cost is potentially to be reduced by approximately 33.03 %. The present study would provide a reference for the water pollutant control and environmental management in port waters.
{"title":"Optimal allocation model of port emergency resources based on the improved multi-objective particle swarm algorithm and TOPSIS method","authors":"Jianqun Guo , Zhonglian Jiang , Jianglong Ying , Xuejun Feng , Fengfan Zheng","doi":"10.1016/j.marpolbul.2024.117214","DOIUrl":"10.1016/j.marpolbul.2024.117214","url":null,"abstract":"<div><div>The busy maritime traffic and occurrence of ship accidents have led to a growing recognition of the necessity to maritime emergency resources allocation. The port emergency resource allocation is of significant importance for the maritime safety. This paper presents an optimized allocation model for port emergency resources based on the improved multi-objective particle swarm optimization (IMOPSO). The model introduces the crowding distance and improves the external archive update strategy. The particle inertia weight is adjusted and a dynamic mutation operator is incorporated. The entropy-weighted technique for order preference by similarity to an ideal solution method is also employed to identify the optimal solution. A comprehensive comparison with MOPSO has been presented and discussed. Three metrics of generational distance (<em>GD</em>), spacing (<em>SP</em>) and delta indicator (<em>Δ</em>) were employed for performance evaluation. The results demonstrated that the proposed IMOPSO algorithm exhibited superior performance and robustness, with average values of <em>GD</em> = 0.0386, <em>SP</em> = 0.0023 and <em>Δ</em> = 0.6468 for ZDT test functions. The model efficacy is further validated by a case study of oil spill dispersant configuration at Zhanjiang Port, China. Seven alternative schemes have been obtained, among which the optimal scheme is selected by the entropy-weighted TOPSIS method. The overall cost is potentially to be reduced by approximately 33.03 %. The present study would provide a reference for the water pollutant control and environmental management in port waters.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117214"},"PeriodicalIF":5.3,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142583188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-03DOI: 10.1016/j.marpolbul.2024.117207
Shouxing Li, Zaixun Jia, Xin Zhao
Typhoon storm surges cause significant damage to economic activities and have a huge impact on the financial sector. Using panel data of 170 local commercial banks in China's coastal regions from 2008 to 2022, this study explores the impact of typhoon storm surges on bank performance. The study finds that typhoon storm surges significantly reduce bank performance, with a greater impact on banks in the southern and eastern marine economic circles, as well as those primarily serving rural and “Tam Nong” economies. Typhoon storm surges affect bank performance by causing economic losses to bank's credit clients, influencing the probability of default and the quality of bank credit assets. Improving coastal infrastructure, increasing insurance coverage, and ensuring bank capital adequacy are all conducive to mitigating the negative impact of typhoons. The conclusion provides new empirical evidence for preventing and extricating marine disasters and bank climate risks in coastal regions.
{"title":"Do typhoon storm surges affect bank performance in coastal regions? Empirical evidence from China","authors":"Shouxing Li, Zaixun Jia, Xin Zhao","doi":"10.1016/j.marpolbul.2024.117207","DOIUrl":"10.1016/j.marpolbul.2024.117207","url":null,"abstract":"<div><div>Typhoon storm surges cause significant damage to economic activities and have a huge impact on the financial sector. Using panel data of 170 local commercial banks in China's coastal regions from 2008 to 2022, this study explores the impact of typhoon storm surges on bank performance. The study finds that typhoon storm surges significantly reduce bank performance, with a greater impact on banks in the southern and eastern marine economic circles, as well as those primarily serving rural and “Tam Nong” economies. Typhoon storm surges affect bank performance by causing economic losses to bank's credit clients, influencing the probability of default and the quality of bank credit assets. Improving coastal infrastructure, increasing insurance coverage, and ensuring bank capital adequacy are all conducive to mitigating the negative impact of typhoons. The conclusion provides new empirical evidence for preventing and extricating marine disasters and bank climate risks in coastal regions.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117207"},"PeriodicalIF":5.3,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142569088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-02DOI: 10.1016/j.marpolbul.2024.117192
Bruno Martins Gurgatz , Vinícius Rogel Paulino de Oliveira , Michel Michaelovitch de Mahiques , Silvia Pedroso Melegari , César C. Martins
The Paranaguá Estuarine System (PES) is an extensive subtropical estuarine system on the Southern Brazilian coast. It encompasses one of the last preserved areas of the Atlantic Forest and is recognized by UNESCO as a Natural Heritage site. This study evaluates the human impact of rapid and unplanned urbanization, an inefficient sewage system, and two port complexes by using linear alkylbenzenes (LABs) as a molecular marker for sewage input. The LAB analyses included Soxhlet extraction, clean-up, and quantification, which was performed using a gas chromatograph coupled to a mass spectrometer. The concentrations of total LABs (∑LABs) in the dry-weight sediments of PES ranged from below detection limits to 42.7 ng g−1, with an average of 6.5 ± 7.8 ng g−1. The primary sources of LABs are rivers surrounding the city of Paranaguá, which receive sewage inputs. In contrast, the input of allochthonous organic carbon and fine sediments is primarily associated with discharges from the Antonina River watershed. The recent unplanned occupation of estuarine margins, with untreated or inadequately treated sewage discharged directly into the environment or cesspools, explains the low degradation levels of LABs found in some sectors of the PES. The current concentrations of LABs, lower than those along the Brazilian coast and in densely populated coastal countries, suggest good sediment quality. This study shows that LABs can serve as a geochemical tool for tracing sources and distinguishing impacts related to population density in one of the largest preserved subtropical estuarine areas in the Southern Hemisphere.
{"title":"Tracing sewage contamination in a South Atlantic UNESCO Natural Heritage estuary using sedimentary linear alkylbenzenes and their diagnostic ratios","authors":"Bruno Martins Gurgatz , Vinícius Rogel Paulino de Oliveira , Michel Michaelovitch de Mahiques , Silvia Pedroso Melegari , César C. Martins","doi":"10.1016/j.marpolbul.2024.117192","DOIUrl":"10.1016/j.marpolbul.2024.117192","url":null,"abstract":"<div><div>The Paranaguá Estuarine System (PES) is an extensive subtropical estuarine system on the Southern Brazilian coast. It encompasses one of the last preserved areas of the Atlantic Forest and is recognized by UNESCO as a Natural Heritage site. This study evaluates the human impact of rapid and unplanned urbanization, an inefficient sewage system, and two port complexes by using linear alkylbenzenes (LABs) as a molecular marker for sewage input. The LAB analyses included Soxhlet extraction, clean-up, and quantification, which was performed using a gas chromatograph coupled to a mass spectrometer. The concentrations of total LABs (∑LABs) in the dry-weight sediments of PES ranged from below detection limits to 42.7 ng g<sup>−1</sup>, with an average of 6.5 ± 7.8 ng g<sup>−1</sup>. The primary sources of LABs are rivers surrounding the city of Paranaguá, which receive sewage inputs. In contrast, the input of allochthonous organic carbon and fine sediments is primarily associated with discharges from the Antonina River watershed. The recent unplanned occupation of estuarine margins, with untreated or inadequately treated sewage discharged directly into the environment or cesspools, explains the low degradation levels of LABs found in some sectors of the PES. The current concentrations of LABs, lower than those along the Brazilian coast and in densely populated coastal countries, suggest good sediment quality. This study shows that LABs can serve as a geochemical tool for tracing sources and distinguishing impacts related to population density in one of the largest preserved subtropical estuarine areas in the Southern Hemisphere.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117192"},"PeriodicalIF":5.3,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142569099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-02DOI: 10.1016/j.marpolbul.2024.117210
Hicham Yazid , Taoufiq Bouzid , Aicha Naboulsi , Abdelali Grich , El Mouchtari el Mountassir , Abdelmajid Regti , Mamoune El Himri , Mohammadine El Haddad
Adsorption remediation is an energy-efficient water treatment technology that utilizes the adsorption properties of a biosorbent to remove various pollutants. While many articles have explored the high surface area and adsorption capacity of activated carbon for remediating aquatic systems, few have delved into the environmental impact of its synthesis, which often involves H3PO4, a highly toxic activating agent. In this study, we present a groundbreaking alternative to activated carbon for the adsorption and remediation of aquatic waste that doesn't rely on chemical products. Our discovery that cuttlefish bone, typically considered waste, can serve as an effective adsorbent is a significant leap in eco-friendly research and a source of inspiration for future sustainable solutions.
We selected Malachite Green (MG) as a cationic toxic dye to evaluate the adsorption capacity of our green adsorbent. The prepared powder underwent characterization using techniques such as FTIR, XRD, SEM, and elemental analysis. Additionally, the determination of the cuttlefish bone's zero-point charge pH revealed a value of 8.4, which influences the material's surface charge and its interaction with ions and molecules in the solution. We conducted a detailed study on the effects of solution pH, adsorbent amount, Malachite Green concentration, temperature, and contact time on the dye adsorption. The results demonstrated that the adsorption of Malachite Green by cuttlefish bone powder is an endothermic process, requiring heat input. This indicates that the adsorption efficiency increases with temperature. The significant enthalpy results obtained confirmed the endothermic nature of the process. In this study, we combined experimental and theoretical approaches to gain a better understanding of the adsorption mechanism. The results showed that Cuttlefish Bone is an environmentally friendly and highly efficient adsorbent.
{"title":"Adsorption of malachite green using waste marine cuttlefish bone powder: Experimental and theoretical investigations","authors":"Hicham Yazid , Taoufiq Bouzid , Aicha Naboulsi , Abdelali Grich , El Mouchtari el Mountassir , Abdelmajid Regti , Mamoune El Himri , Mohammadine El Haddad","doi":"10.1016/j.marpolbul.2024.117210","DOIUrl":"10.1016/j.marpolbul.2024.117210","url":null,"abstract":"<div><div>Adsorption remediation is an energy-efficient water treatment technology that utilizes the adsorption properties of a biosorbent to remove various pollutants. While many articles have explored the high surface area and adsorption capacity of activated carbon for remediating aquatic systems, few have delved into the environmental impact of its synthesis, which often involves H<sub>3</sub>PO<sub>4</sub>, a highly toxic activating agent. In this study, we present a groundbreaking alternative to activated carbon for the adsorption and remediation of aquatic waste that doesn't rely on chemical products. Our discovery that cuttlefish bone, typically considered waste, can serve as an effective adsorbent is a significant leap in eco-friendly research and a source of inspiration for future sustainable solutions.</div><div>We selected Malachite Green (MG) as a cationic toxic dye to evaluate the adsorption capacity of our green adsorbent. The prepared powder underwent characterization using techniques such as FTIR, XRD, SEM, and elemental analysis. Additionally, the determination of the cuttlefish bone's zero-point charge pH revealed a value of 8.4, which influences the material's surface charge and its interaction with ions and molecules in the solution. We conducted a detailed study on the effects of solution pH, adsorbent amount, Malachite Green concentration, temperature, and contact time on the dye adsorption. The results demonstrated that the adsorption of Malachite Green by cuttlefish bone powder is an endothermic process, requiring heat input. This indicates that the adsorption efficiency increases with temperature. The significant enthalpy results obtained confirmed the endothermic nature of the process. In this study, we combined experimental and theoretical approaches to gain a better understanding of the adsorption mechanism. The results showed that Cuttlefish Bone is an environmentally friendly and highly efficient adsorbent.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117210"},"PeriodicalIF":5.3,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142569055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-02DOI: 10.1016/j.marpolbul.2024.117213
Fefi Eka Wardiani , Cheng-Di Dong , Chiu-Wen Chen , Ta-Kang Liu , Zhi-Ping Hsu , Su Shiung Lam , Lin-Chi Wang
The objective of this study is to comprehensively characterize persistent organic pollutants (POPs) in seawater at Kaohsiung Harbor, focusing on their concentrations, partitioning behaviors, and profiles in both particle and liquid phases. We analyzed 100 L seawater for each sample, finding total dioxin-like toxicity (PCDD/Fs + PCBs + PBDD/Fs) ranging from 0.00936 to 0.167 pg WHO-TEQ/L, with PCDD/Fs accounting for 68 % of total toxicity. POPs predominantly appeared in the particle phase, observed in over 80 % of samples, except for PCBs. The observed correlations between particulate matter (PM) and chlorinated POPs at sites receiving river effluents suggest shared pollution sources. The liquid partition of PCDD/Fs, PCBs, and PBDEs in the seawater shows an inverse relationship with log Kow and a direct proportionality with solubility, particularly above 0.1 μg/L. Furthermore, PBDEs in seawater can transform into PBDD/Fs upon UV light exposure, highlighting another potential pathway for the persistence and spread of these harmful contaminants in the environment. These findings emphasize the need for field-based investigations to assess PBDF formation in aquatic environments and underscore the importance of stronger mitigation strategies, including better wastewater treatment and stricter discharge regulations to reduce POPs in marine ecosystems.
{"title":"Characterizing persistent organic pollutants in seawater at a multifunctional international harbor influenced by industrial riverbank activities","authors":"Fefi Eka Wardiani , Cheng-Di Dong , Chiu-Wen Chen , Ta-Kang Liu , Zhi-Ping Hsu , Su Shiung Lam , Lin-Chi Wang","doi":"10.1016/j.marpolbul.2024.117213","DOIUrl":"10.1016/j.marpolbul.2024.117213","url":null,"abstract":"<div><div>The objective of this study is to comprehensively characterize persistent organic pollutants (POPs) in seawater at Kaohsiung Harbor, focusing on their concentrations, partitioning behaviors, and profiles in both particle and liquid phases. We analyzed 100 L seawater for each sample, finding total dioxin-like toxicity (PCDD/Fs + PCBs + PBDD/Fs) ranging from 0.00936 to 0.167 pg WHO-TEQ/L, with PCDD/Fs accounting for 68 % of total toxicity. POPs predominantly appeared in the particle phase, observed in over 80 % of samples, except for PCBs. The observed correlations between particulate matter (PM) and chlorinated POPs at sites receiving river effluents suggest shared pollution sources. The liquid partition of PCDD/Fs, PCBs, and PBDEs in the seawater shows an inverse relationship with log Kow and a direct proportionality with solubility, particularly above 0.1 μg/L. Furthermore, PBDEs in seawater can transform into PBDD/Fs upon UV light exposure, highlighting another potential pathway for the persistence and spread of these harmful contaminants in the environment. These findings emphasize the need for field-based investigations to assess PBDF formation in aquatic environments and underscore the importance of stronger mitigation strategies, including better wastewater treatment and stricter discharge regulations to reduce POPs in marine ecosystems.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117213"},"PeriodicalIF":5.3,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142569071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-02DOI: 10.1016/j.marpolbul.2024.117200
Pengbo Zhao , Xiaofei Lou , Yafei Cui , Chang Wu , Chenyu Song , Jingyuan Cui , Sheng Zhang , Yao Qu , Tao Peng , Ruihong Chen , Haiping Zhang
Nitrogen is a vital nutrient for the growth of microalgae. Understanding the mechanism of nitrogen uptake by algae plays a crucial role in addressing and mitigating. Harmful algal blooms. This study compares the nitrogen uptake kinetics of Scenedesmus quadricauda on different nitrogen substrates: NO3−, NH4+, urea, and glycine. And the effects of four environmental factors on nitrogen uptake were also investigated. In the presence of four N substrates, Scenedesmus quadricauda took up four N substrates simultaneously. The order of uptake rates by Scenedesmus quadricauda was NH4+ > urea > NO3− > glycine. Scenedesmus quadricauda exhibited a strong preference for urea and NH4+. Moreover, the environmental factors of temperature, pH, and light intensity had significant effects on nitrogen uptake rates. Although changes in environmental factors affected nitrogen uptake rates, they did not alter the uptake preference for different nitrogen sources. Higher temperatures (35 °C), higher pH (9), optimal light intensity (7200 lx) and turbulence intensity (100 rpm) conditions were associated with the higher nitrogen uptake rates. The findings contribute to a better understanding of algal nitrogen metabolism and provide a basis for predicting and managing algal bloom occurrences in aquatic ecosystems.
{"title":"Nitrogen uptake by Scenedesmus quadricauda and its responses over environmental factors","authors":"Pengbo Zhao , Xiaofei Lou , Yafei Cui , Chang Wu , Chenyu Song , Jingyuan Cui , Sheng Zhang , Yao Qu , Tao Peng , Ruihong Chen , Haiping Zhang","doi":"10.1016/j.marpolbul.2024.117200","DOIUrl":"10.1016/j.marpolbul.2024.117200","url":null,"abstract":"<div><div>Nitrogen is a vital nutrient for the growth of microalgae. Understanding the mechanism of nitrogen uptake by algae plays a crucial role in addressing and mitigating. Harmful algal blooms. This study compares the nitrogen uptake kinetics of <em>Scenedesmus quadricauda</em> on different nitrogen substrates: NO<sub>3</sub><sup>−</sup>, NH<sub>4</sub><sup>+</sup>, urea, and glycine. And the effects of four environmental factors on nitrogen uptake were also investigated. In the presence of four N substrates, <em>Scenedesmus quadricauda</em> took up four N substrates simultaneously. The order of uptake rates by <em>Scenedesmus quadricauda</em> was NH<sub>4</sub><sup>+</sup> > urea > NO<sub>3</sub><sup>−</sup> > glycine. <em>Scenedesmus quadricauda</em> exhibited a strong preference for urea and NH<sub>4</sub><sup>+</sup>. Moreover, the environmental factors of temperature, pH, and light intensity had significant effects on nitrogen uptake rates. Although changes in environmental factors affected nitrogen uptake rates, they did not alter the uptake preference for different nitrogen sources. Higher temperatures (35 °C), higher pH (9), optimal light intensity (7200 lx) and turbulence intensity (100 rpm) conditions were associated with the higher nitrogen uptake rates. The findings contribute to a better understanding of algal nitrogen metabolism and provide a basis for predicting and managing algal bloom occurrences in aquatic ecosystems.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"209 ","pages":"Article 117200"},"PeriodicalIF":5.3,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142569092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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