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García-Baciero A, Rendón-von Osten J, Pérez-Maturino V, Ramírez-Macías D. Whale shark Rhyncodon typus exposure to organochlorine pesticides in the Southern Gulf of California, Mexico. MARINE POLLUTION BULLETIN 2024; 206:116748. [PMID: 39047603 DOI: 10.1016/j.marpolbul.2024.116748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 07/04/2024] [Accepted: 07/16/2024] [Indexed: 07/27/2024]
Abstract
Organochlorine pesticides (OCPs) are persistent organic pollutants (POPs), characterized by their high mobility and environmental persistence, bioaccumulation, and trophic transfer. Considering the highly migratory nature and longevity of the whale shark, this species can be considered as an early warning bioindicator of regional contamination from the marine environment. This work investigated the concentration of twenty OCPs in thirty whale shark skin biopsies, collected between 2014 and 2015 in Bahía La Paz (Gulf of California, Mexico). Mean detected OCP levels were 33.99 ± 105.23 ng/g dw (dry weight), and ΣChlordane, ΣDrin, and ΣHCH showed the highest concentrations. Statistically differences in mean OCP concentration were not found by sex and size. PC1 and PC2 accounted for 68.1 % and 16.1 % of the total variance, respectively. The presence of higher levels of some pesticides than their corresponding metabolites suggests recent applications related to agricultural activity in the surrounding areas of Baja California peninsula.
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Affiliation(s)
- Alberto García-Baciero
- Whale Shark Mexico-Conexiones Terramar AC, Independencia 106, 23000 La Paz, B.C.S., Mexico
| | - Jaime Rendón-von Osten
- Instituto EPOMEX, Universidad Autónoma de Campeche, Campus VI, Av. Héroe de Nacozari 480, Campeche 24070, Mexico
| | - Valeria Pérez-Maturino
- Whale Shark Mexico-Conexiones Terramar AC, Independencia 106, 23000 La Paz, B.C.S., Mexico
| | - Dení Ramírez-Macías
- Whale Shark Mexico-Conexiones Terramar AC, Independencia 106, 23000 La Paz, B.C.S., Mexico.
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Ghobashy MM, Gayed HM. Thermal conversion of irradiated LLDPE waste into sustainable sponge-like compounds: a novel approach for efficient trace-level oil-water removal. Sci Rep 2024; 14:4833. [PMID: 38413688 PMCID: PMC10899568 DOI: 10.1038/s41598-024-55401-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 02/22/2024] [Indexed: 02/29/2024] Open
Abstract
The newest method for recycling waste linear low-density polyethylene (LLDPE) is the thermo-catalytic degradation technique known as catalytic pyrolysis. Typically, it is limited by 500-800 °C high temperatures. Catalytic pyrolysis releases toxins and forms harmful carbonized char. The current study is based on exposing wasted LLDPE to different gamma irradiation doses and then pyrolysis in castor oil (150-300 °C). The output product of Ir-(rLLDPE) is turned into another compound with a new structural architecture (sponge-like). SEM analysis confirms conversion, showing sponge-like spicules and layers. Ir-(rLLDPE) is sponge-like with a soft, malleable, absorbent texture. The DSC demonstrates altered thermal properties, with a melting point at 121 °C splitting into two peaks (endothermic at 117 °C and exothermic at 160 °C). The exothermic peaks signify the curing process of the sponge-like material. Ir-(rLLDPE) is assessed as an adsorbent for aqueous oils and solvents. The study examines irradiation doses, pyrolysis temperature, and time on adsorbent capacity. The oil removal obeys the Langmuir isotherm with monolayer adsorption, with a maximum adsorption capacity of 24.75 g/g of waste oil and 43 g/g of 1,1,2,2-tetrachloroethane. Squashing maintains adsorption after 20 reuses. Data shows sponges effectively clean marine oil spills and solvents.
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Affiliation(s)
- Mohamed Mohamady Ghobashy
- Radiation Research of Polymer Chemistry Department, National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
| | - H M Gayed
- Radiation Research of Polymer Chemistry Department, National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
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3
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Kumar V, Karam Q, Shajan AB, Al-Nuaimi S, Sattari Z, El-Dakour S. Transcriptome analysis of Sparidentex hasta larvae exposed to water-accommodated fraction of Kuwait crude oil. Sci Rep 2024; 14:3591. [PMID: 38351213 PMCID: PMC10864312 DOI: 10.1038/s41598-024-53408-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 01/31/2024] [Indexed: 02/16/2024] Open
Abstract
Anthropogenic activities have been shown to significantly affect marine life. Water pollution and oil spills are particularly deleterious to the fish population, especially during their larval stage. In this study, Sobaity-sea bream Sparidentex hasta (Valenciennes, 1830) larvae were exposed to serial dilutions of water-accommodated fraction of Kuwait crude oil (KCO-WAF) for varying durations (3, 6, 24, 48, 72 or 96 h) in acute exposure regime. Gene expression was assessed using RNA sequencing and validated through RT-qPCR. The RNA sequencing data were aligned to the sequenced genome, and differentially expressed genes were identified in response to treatment with or without KCO-WAF at various exposure times. The highest number of differentially expressed genes was observed at the early time point of 6 h of post-exposure to KCO-WAF. The lowest number of differentially expressed genes were noticed at 96 h of treatment indicating early response of the larvae to KCO-WAF contaminant. The acquired information on the differentially expressed genes was then used for functional and pathway analysis. More than 90% of the differentially expressed genes had a significant BLAST match, with the two most common matching species being Acanthopagrus latus and Sparus aurata. Approximately 65% of the differentially expressed genes had Gene Ontology annotations, whereas > 35% of the genes had KEGG pathway annotations. The differentially expressed genes were found to be enriched for various signaling pathways (e.g., MAPK, cAMP, PI3K-Akt) and nervous system-related pathways (e.g., neurodegeneration, axon guidance, glutamatergic synapse, GABAergic synapse). Early exposure modulated the signaling pathways, while KCO-WAF exposure of larvae for a longer duration affected the neurodegenerative/nervous system-related pathways. RT-qPCR analysis confirmed the differential expression of genes at each time point. These findings provide insights into the underlying molecular mechanisms of the deleterious effects of acute exposure to oil pollution-on marine fish populations, particularly at the early larval stage of Sparidentex hasta.
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Affiliation(s)
- Vinod Kumar
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, 13109, Safat, Kuwait.
| | - Qusaie Karam
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, 13109, Safat, Kuwait
| | - Anisha B Shajan
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, 13109, Safat, Kuwait
| | - Sabeeka Al-Nuaimi
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, 13109, Safat, Kuwait
| | - Zainab Sattari
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, 13109, Safat, Kuwait
| | - Saleem El-Dakour
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, 13109, Safat, Kuwait
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4
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Behera D, Krishnakumar S, Anoop A. Occurrence, distribution and sources of petroleum contamination in reef-associated sediments of the Gulf of Mannar, India. MARINE POLLUTION BULLETIN 2023; 196:115576. [PMID: 37813061 DOI: 10.1016/j.marpolbul.2023.115576] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 09/15/2023] [Accepted: 09/20/2023] [Indexed: 10/11/2023]
Abstract
The distribution of saturated hydrocarbons and polycyclic aromatic hydrocarbons (PAHs) was assessed in superficial sediment samples collected from Mandapam island groups, Gulf of Mannar, India. The hydrocarbon distribution pattern and the n-alkane indices (e.g., carbon preference index (CPI) and natural n-alkanes ratio (NAR)) were deployed to differentiate between the biogenic and anthropogenic sources. Petroleum pollution was indicated by the pristane/phytane ratio close to 1. Presence of a prominent unresolved complex mixture (UCM) as well as hopane concentrations further supported this assertion. The evaluation of petrogenic sources of contamination were also comprehended by various diagnostic ratios of PAHs. The sites associated with shipping activities, tourism, and located near the mainland and accessible portions of the islands exhibited high petroleum contamination. Correlation analysis underlines the significance of combining petroleum-specific marker compounds and diagnostic ratios to improve the assessment of human influence on marine ecosystems.
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Affiliation(s)
- Diptimayee Behera
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector-81, Mohali 140306, Punjab, India
| | - S Krishnakumar
- Department of Geology, Malankara Catholic college, Mariyagiri, Kaliakkavilai, Kanyakumari 629153, Tamil Nadu, India
| | - Ambili Anoop
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector-81, Mohali 140306, Punjab, India.
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Sarly MS, Pedro CA, Bruno CS, Raposo A, Quadros HC, Pombo A, Gonçalves SC. Use of the gonadal tissue of the sea urchin Paracentrotus lividus as a target for environmental contamination by trace metals. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:89559-89580. [PMID: 37454008 PMCID: PMC10412469 DOI: 10.1007/s11356-023-28472-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 06/23/2023] [Indexed: 07/18/2023]
Abstract
Many environmental monitoring works have been carried out using biomarkers as a tool to identify the effects of oil contamination on marine organisms; however, only a few studies have used sea urchin gonadal tissue for this purpose. Within this context, the present work aimed to understand the impact of an oil spill, proposing the use of sea urchin gonadal tissue as a biomarker for environmental contamination by trace metals in the species Paracentrotus lividus. Biometric analysis, quantification analyses of the elements Cd, Pb, Ni, Fe, Mn, Zn, and Cu, as well as histopathological evaluations were performed in gonads of P. lividus collected from an area affected by hydrocarbons, named as impacted shore (IS) and an area not affected, named reference shore (RS). The results showed that carapace diameter (DC), total wet weight (WW), and Cd concentrations in the gonads were significantly influenced by the interaction between the rocky shores of origin, the months of sampling, and by the sex of the individuals. Moreover, from July until September, the levels of Zn and Cd were significantly lower in male than in female gonads. In July (the month of the oil spill), the indexes of histopathological alterations (IHPA) of membrane dilation were significantly higher in individuals from the IS, compared to the individuals from the RS. In addition, there were significant correlations between biometric variables (wet weight, diameter of carapace, gonadal weight, and gonadosomatic index) and the elements Cd, Cu, Ni, and Mn concentrations. Lastly, a delay in the gametogenic cycle of the sea urchins from IS was also observed. Taken together, these findings suggest that direct exposure to trace metals induces histopathological lesions in P. lividus' gonads and affects its reproductive cycle.
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Affiliation(s)
- Monique S Sarly
- MARE - Marine and Environmental Sciences Centre, ESTM - School of Tourism and Maritime Technology, Polytechnic of Leiria, 2520-641, Peniche, Portugal
| | - Carmen A Pedro
- MARE - Marine and Environmental Sciences Centre, ESTM - School of Tourism and Maritime Technology, Polytechnic of Leiria, 2520-641, Peniche, Portugal
| | - Catarina S Bruno
- MARE - Marine and Environmental Sciences Centre, ESTM - School of Tourism and Maritime Technology, Polytechnic of Leiria, 2520-641, Peniche, Portugal
| | - Andreia Raposo
- MARE - Marine and Environmental Sciences Centre, ESTM - School of Tourism and Maritime Technology, Polytechnic of Leiria, 2520-641, Peniche, Portugal
| | - Helenita C Quadros
- Gonçalo Moniz Institute - Oswaldo Cruz Foundation (Fiocruz), Salvador, 40296-710, Brazil
| | - Ana Pombo
- MARE - Marine and Environmental Sciences Centre, ESTM - School of Tourism and Maritime Technology, Polytechnic of Leiria, 2520-641, Peniche, Portugal
| | - Sílvia C Gonçalves
- MARE - Marine and Environmental Sciences Centre, ESTM - School of Tourism and Maritime Technology, Polytechnic of Leiria, 2520-641, Peniche, Portugal.
- MARE - Marine and Environmental Sciences Centre, Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, 3004-517, Coimbra, Portugal.
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6
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Ashraf M, Ahammad SZ, Chakma S. Advancements in the dominion of fate and transport of pharmaceuticals and personal care products in the environment-a bibliometric study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:64313-64341. [PMID: 37067715 PMCID: PMC10108824 DOI: 10.1007/s11356-023-26796-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 03/30/2023] [Indexed: 05/11/2023]
Abstract
The study on the fate and transport of Pharmaceuticals and Personal Care Products, PPCPs (FTP) in the environment, has received particular attention for over two decades. The PPCPs threaten ecology and human health even at low concentrations due to their synergistic effects and long-range transport. The research aims to provide an inclusive map of the scientific background of FTP research over the last 25 years, from 1996 to 2020, to identify the main characteristics, evolution, salient research themes, trends, and research hotspots in the field of interest. Bibliometric networks were synthesized and analyzed for 577 journal articles extracted from the Scopus database. Consequently, seven major themes of FTP research were identified as follows: (i) PPCPs category; (ii) hazardous effects; (iii) occurrence of PPCPs; (iv) PPCPs in organisms; (v) remediation; (vi) FTP-governing processes; and (vii) assessment in the environment. The themes gave an in-depth picture of the sources of PPCPs and their transport and fate processes in the environment, which originated from sewage treatment plants and transported further to sediment/soils/groundwater/oceans that act as the PPCPs' major sink. The article provided a rigorous analysis of the research landscape in the FTP study conducted during the specified years. The prominent research themes, content analysis, and research hotspots identified in the study may serve as the basis of real-time guidance to lead future research areas and a prior review for policymakers and practitioners.
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Affiliation(s)
- Maliha Ashraf
- School of Interdisciplinary Research, Indian Institute of Technology, Delhi, India.
| | - Shaikh Ziauddin Ahammad
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology, Delhi, India
| | - Sumedha Chakma
- Department of Civil Engineering, Indian Institute of Technology, Delhi, India
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7
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Calisi A, Giordano ME, Dondero F, Maisano M, Fasulo S, Lionetto MG. Morphological and functional alterations in hemocytes of Mytilus galloprovincialis exposed in high-impact anthropogenic sites. MARINE ENVIRONMENTAL RESEARCH 2023; 188:105988. [PMID: 37080092 DOI: 10.1016/j.marenvres.2023.105988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 02/27/2023] [Accepted: 04/10/2023] [Indexed: 05/03/2023]
Abstract
The work aimed to study the induction of morphological alterations in M. galloprovincialis in the field and its suitability to be integrated into a sensitive, simple, and cost-effective cell-based multimarker approach for the detection of the stress status induced by pollution in coastal marine environments in view of ecotoxicological biomonitoring and assessment application. Cellular morphometric alterations was paralleled by the analysis of standardized biomarkers such as lysosomal membrane destabilization, and genotoxocity biomarkers such as micronuclei and binuclated cells frequencies were investigated. The study was carried out by means of a transplanting experiment in the field, using caged organisms from an initial population exposed in the field in two multi-impacted coastal sites of the central Mediterranean area, Bagnoli in the eastern Tyrrhenian Sea and Augusta-Melilli-Priolo in the western Ionian Sea. Capo Miseno (NA) for the Tyrrhenian area and Brucoli (ME) for the Ionian area were chosen as control sites. Hemocyte enlargement and filopodial elongation increased frequencies were observed in organisms exposed to the impacted sites. These morphometric alterations showed strong agreement with the lysosomal membrane destabilization and biomarkers of genotoxicity, suggesting their usefulness in detecting the pollutant-induced stress syndrome related to genotoxic damage.
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Affiliation(s)
- Antonio Calisi
- Department of Science and Technological Innovation, Università degli Studi del Piemonte Orientale-Vercelli, Novara, Alessandria, Viale Michel 11, 15121, Alessandria, Italy.
| | - Maria Elena Giordano
- Department of Biological and Environmental Science and Technologies, Universita del Salento, Via prov.le Lecce-Monteroni, 73100, Lecce, Italy.
| | - Francesco Dondero
- Department of Science and Technological Innovation, Università degli Studi del Piemonte Orientale-Vercelli, Novara, Alessandria, Viale Michel 11, 15121, Alessandria, Italy.
| | - Maria Maisano
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166, Messina, Italy.
| | - Salvatore Fasulo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166, Messina, Italy.
| | - Maria Giulia Lionetto
- Department of Biological and Environmental Science and Technologies, Universita del Salento, Via prov.le Lecce-Monteroni, 73100, Lecce, Italy; NBFC, National Biodiversity Future Center, Palermo, 90133, Italy.
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8
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Nos D, Navarro J, Solé M. The influence of ecological factors in the modulation of pollution biomarkers of two small pelagic marine fish. MARINE POLLUTION BULLETIN 2023; 188:114717. [PMID: 36860015 DOI: 10.1016/j.marpolbul.2023.114717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 02/01/2023] [Accepted: 02/05/2023] [Indexed: 06/18/2023]
Abstract
Biomarkers are useful tools for the detection of marine pollution, which is poorly monitored in the pelagic environment. In this study, we investigated the role of key biological and environmental factors on three hepatic xenobiotic biomarkers: carboxylesterases (CEs), glutathione S-transferase (GST) and catalase (CAT). Additionally, ethoxyresorufin-O-deethylase (EROD) and benzyloxy-4-[trifluoromethyl]-coumarin-O-debenzyloxylase (BFCOD) activities were determined for comparative purposes. The pelagic species targeted were the European anchovy (Engraulis encrasicolus) and the European sardine (Sardina pilchardus). The results revealed sex-dependent CE activities in sardine. CEs and GST activities were significantly affected by reproduction and, in anchovy, CE activities were also influenced by temperature. In vitro incubations revealed that the pesticide dichlorvos caused up to 90 % inhibition of basal CEs activity. This work highlights that the reproductive status, temperature and sex, modulate biomarker responses, and that anchovy would be more suitable pelagic bioindicator due to its higher in vitro sensitivity to dichlorvos and sex-independent biomarker responses.
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Affiliation(s)
- David Nos
- Institut de Ciències del Mar (ICM), CSIC, Passeig Marítim de la Barceloneta, 37-49, 08003 Barcelona, Spain.
| | - Joan Navarro
- Institut de Ciències del Mar (ICM), CSIC, Passeig Marítim de la Barceloneta, 37-49, 08003 Barcelona, Spain
| | - Montserrat Solé
- Institut de Ciències del Mar (ICM), CSIC, Passeig Marítim de la Barceloneta, 37-49, 08003 Barcelona, Spain
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9
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Aimon C, Lebigre C, Le Floch S, Claireaux G. Effects of dispersant-treated oil upon behavioural and metabolic parameters of the anti-predator response in juvenile European sea bass (Dicentrarchus labrax). THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 834:155430. [PMID: 35461926 DOI: 10.1016/j.scitotenv.2022.155430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/17/2022] [Accepted: 04/18/2022] [Indexed: 06/14/2023]
Abstract
Acute exposure to oil and oil dispersants can cause a wide range of physiological dysfunctions in marine fish species and evidences for consequences on behaviour are also increasing. In response to the presence of predators or to food availability, the modulation of locomotor activity and schools' behaviour enable fish to maximize their survival rates. However, the degree to which this regulatory process is affected by exposure to oil and/or dispersants is yet unknown. Here we investigated the effect of a 62-h experimental exposure to dispersant-treated oil on the behavioural (shoal cohesion, spontaneous activity) and metabolic (oxygen consumption) responses to simulated predation in juvenile European sea bass, Dicentrarchus labrax L. Our results suggest that exposure to petroleum hydrocarbons may affect negatively individual fitness through impaired ability to respond to predation. Shoal cohesion was not affected, but fish swimming activity was higher than control individuals under predation pressure and the amplitude of their metabolic response was significantly reduced. Fish recovered from alteration of their metabolic response 7 days post-exposure. Additionally, a strong habituation component was observed in C fish and the absence of such pattern in E fish suggest altered capacity to habituate over time to the surrounding environment and possible impairments of the related cognitive performances. Altogether, our data show that juvenile sea bass exposed to oil exhibit transient physiological dysfunctions and impairments of complex behaviours that may have major population-level consequences.
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Affiliation(s)
- C Aimon
- Université de Bretagne Occidentale, LEMAR (UMR 6539), Centre Ifremer de Bretagne, 29280 Plouzané, France; CEDRE, Research Department, 715 rue Alain Colas, CS 41836, Brest 29218-Cedex 2, France.
| | - C Lebigre
- UMR DECOD (Ecosystem Dynamics and Sustainability), Ifremer, INRAE, Institut Agro, Plouzané, France
| | - S Le Floch
- CEDRE, Research Department, 715 rue Alain Colas, CS 41836, Brest 29218-Cedex 2, France
| | - G Claireaux
- Université de Bretagne Occidentale, LEMAR (UMR 6539), Centre Ifremer de Bretagne, 29280 Plouzané, France
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Sathish T, Saravanan R, Vijayan V, Dinesh Kumar S. Investigations on influences of MWCNT composite membranes in oil refineries waste water treatment with Taguchi route. CHEMOSPHERE 2022; 298:134265. [PMID: 35283151 DOI: 10.1016/j.chemosphere.2022.134265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/24/2022] [Accepted: 03/06/2022] [Indexed: 06/14/2023]
Abstract
Most of the 'oil refineries' severally pollutes the water resources by depleting their untreated waste water like cooling water, storm water and unsanitary sewage water. These wastewaters are to be treated with high care to protect the human, pebbles, plants, fish and other water animals and from harmful effects. The present study focused to treat the oil refinery wastewater by means of Multi wall carbon nanotube (MWCNT) coated Polyvinylidene Fluoride (PVDF) membrane. The main objectives are: to increases the life of filter, reduce the percolation flux and reduce the formation of antifouling in the filter by using MWCNT composite membrane in it. Different process parameters of the proposed water treatment process, like diameter of MWCNT (15 nm, 20 nm, 25 nm and 30 nm), operating pressure (3 bar, 4 bar, 5 bar and 6 bar), pH value (3, 5, 7 and 9) and temperature (25 °C, 30 °C, 35 °C and 40 °C) temperature. Taguchi statistical technique is employed for designing experiments and for optimizing the process parameters of wastewater treatment process of an oil refinery. The proposed filter for wastewater treatment exhibited appreciable performance in removal rate of Percolation flux, percentage of chemical oxygen demand removal and percentage of total carbolic rejection as 27.2 kg/m2h, 78.51% and 95.33% respectively.
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Affiliation(s)
- T Sathish
- Department of Mechanical Engineering, Saveetha School of Engineering, SIMATS, Chennai, Tamil Nadu, India.
| | - R Saravanan
- Department of Mechanical Engineering, Saveetha School of Engineering, SIMATS, Chennai, Tamil Nadu, India
| | - V Vijayan
- Department of Mechanical Engineering, K.Ramakrishnan College of Technology, Trichy, Tamil Nadu, India
| | - S Dinesh Kumar
- Department of Mechanical Engineering, St.Peter's Institute of Higher Education and Research, Chennai, Tamil Nadu, India
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11
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Shi X, Guo R, Lu D, Wang P, Dai X. Toxicity Effects of Combined Mixtures of BDE-47 and Nickel on the Microalgae Phaeodactylum tricornutum (Bacillariophyceae). TOXICS 2022; 10:toxics10050211. [PMID: 35622625 PMCID: PMC9143900 DOI: 10.3390/toxics10050211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 04/12/2022] [Accepted: 04/16/2022] [Indexed: 11/29/2022]
Abstract
Nickel and 2,2’,4,4’-tetrabromodiphenyl ether (BDE-47) are two environmental pollutants commonly and simultaneously present in aquatic systems. Nickel and BDE-47 are individually toxic to various aquatic organisms. However, their toxicity mechanisms are species-dependent, and the toxic effects of combined mixtures of BDE-47 and nickel have not yet been investigated. The present study investigated the toxic effects of combined mixtures of BDE-47 and nickel in the diatom Phaeodactylum tricornutum. BDE-47 and nickel mixtures significantly decreased cell abundance and photosynthetic efficiency, while these cells’ reactive oxygen species (ROS) production significantly increased. The EC50-72 h for BDE-47 and mixtures of BDE-47 and nickel were 16.46 ± 0.93 and 1.35 ± 0.06 mg/L, respectively. Thus, combined mixtures of the two pollutants enhance their toxic effects. Interactions between BDE-47 and nickel were evaluated, revealing synergistic interactions that contributed to toxicity in P. tricornutum. Moreover, transcriptomic analyses revealed photosynthesis, nitrogen metabolism, the biosynthesis of amino acids, the biosynthesis of secondary metabolites, oxoacid metabolism, organic acid metabolism, carboxylic acid metabolism, and oxidation-reduction processes were considerably affected by the mixtures. This study provides evidence for the mechanisms of toxicity from combined BDE-47 and nickel exposure while also improving our understanding of the ecological risks of toxic chemicals on microalgae.
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Affiliation(s)
| | | | | | - Pengbin Wang
- Correspondence: (P.W.); micro (X.D.); Tel.: +86-182-6886-1647 (P.W.); +86-137-3546-6556 (X.D.)
| | - Xinfeng Dai
- Correspondence: (P.W.); micro (X.D.); Tel.: +86-182-6886-1647 (P.W.); +86-137-3546-6556 (X.D.)
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12
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Lin MW, Huang HL, Yu XR, Lin YX, Li XA, Tsui L, Young SS, Chan HL, Chou HC. Urban sediment pollutants alternate human cell essential behaviour through promoting oxidative damage. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 229:113065. [PMID: 34920185 DOI: 10.1016/j.ecoenv.2021.113065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 11/20/2021] [Accepted: 12/05/2021] [Indexed: 06/14/2023]
Abstract
The main objective of this study was to establish a human cell-based platform to assess the effects of sediment toxicity on oxidative damage and cell essential behaviour. Since sediment pollution has increased as a consequence of including but not limited to industrialisation, the contaminants accumulated in sediments have already led to human health concerns. The Hsinchu Science Park is one of the most prominent semiconductor manufacturing centres in the world, and the Ke-Ya River flows through Hsinchu Science Park and the Hsinchu urban district. Because semiconductor wastes potentially contribute to higher-than-normal rates of cancers, birth defects, and serious diseases, the quality assessment of the Ke-Ya River has prompted widespread concerns. While previous studies have shown an association between the degradation of fish populations and sediment pollutants, very little is known about the issues on human health. Herein, the effects of sediment from three sediment sampling sites of the Ke-Ya River on 11 different human cell lines were directly evaluated. The upstream represents the undeveloped zone, the middle-stream represents the household/industrial wastewater zone, and the downstream represents the accumulation zone. Our results indicated that the sediment pollution of the downstream Ke-Ya River was more cytotoxic than that of the middle stream and upstream. Downstream sediment extract (DSE) significantly increased reactive oxygen species (ROS) levels across all cell types. Accordingly, oxidative stress can trigger redox-sensitive pathways and alter essential biological processes such as cell viability, cell adhesion, and cell motility. Importantly, the MTT assay indicated that DSE significantly decreased the viability of brain, oral, lung, breast, liver, pancreatic, cervical, prostate, and colorectal cells. Furthermore, the adhesive ability and wound healing ability of most cells were greatly reduced in the presence of DSE compared to other conditions. Thus, this study shows the results of the first analyses completed on the sediment cytotoxicity in human cells, and stimulated ROS levels are crucial for cellular life. In future research, the detailed cause and effect mechanisms of the abundant ROS generated in DSE will be further investigated. We sincerely hope that our study provides a scientific basis for further investigations with a global perspective on public health challenges.
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Affiliation(s)
- Meng-Wei Lin
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Hsiao-Lan Huang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Xin-Ru Yu
- Institute of Analytical and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Yu-Xuan Lin
- Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, New Taipei City, Taiwan
| | - Xi-An Li
- Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, New Taipei City, Taiwan
| | - Lo Tsui
- Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, New Taipei City, Taiwan
| | - Shuh-Sen Young
- Institute of Analytical and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
| | - Hong-Lin Chan
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan; Department of Medical Science and Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan.
| | - Hsiu-Chuan Chou
- Institute of Analytical and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
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13
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Chen YN, Bian WP, Liu L, Chen X, Tang M, Pei DS. Generation of a novel transgenic marine medaka (Oryzias melastigma) for highly sensitive detection of heavy metals in the environment. JOURNAL OF HAZARDOUS MATERIALS 2021; 419:126382. [PMID: 34218191 DOI: 10.1016/j.jhazmat.2021.126382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/27/2021] [Accepted: 06/08/2021] [Indexed: 06/13/2023]
Abstract
As typic priority pollutants in the marine environment, heavy metals can be accumulated in the human body leading to serious environmental and health problems. The metal regulatory elements (MREs) have been identified to be the main functional parts for the response to heavy metals. To develop a convenient biological monitoring tool for the detection of heavy metals in the oceans, we generated a transgenic marine medaka line Tg(OmMT: eGFP) with a truncated metallothionein promoter, which was only 193 bp and drove the expression of eGFP. After Tg(OmMT:eGFP) embryos were treated with four different heavy metals and different concentrations, the results showed that the expression level of eGFP was consistent with that of the endogenous mt. The transgenic embryos are very sensitive to Hg2+, and the fluorescence could be induced in the 0.0002 μM concentration, which is far lower than the primary water standard. The expression level of eGFP and mt showed a dose-dependent manner to heavy metals concentration. Taken together, the newly established marine medaka is a sensitive, efficient, and convenient tool for monitoring heavy metal pollution in the environment, especially seawater.
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Affiliation(s)
- Ya-Nan Chen
- College of Ecology and Environment, Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan University, Haikou 570228, China; Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Wan-Ping Bian
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Li Liu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Xin Chen
- College of Ecology and Environment, Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan University, Haikou 570228, China
| | - Min Tang
- College of Ecology and Environment, Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan University, Haikou 570228, China.
| | - De-Sheng Pei
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; School of Public Health and Management, Chongqing Medical University, Chongqing 400016, China.
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14
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Pollution Biomarkers in the Framework of Marine Biodiversity Conservation: State of Art and Perspectives. WATER 2021. [DOI: 10.3390/w13131847] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Marine biodiversity is threatened by several anthropogenic pressures. Pollution deriving from the discharge of chemical contaminants in the sea represents one of the main threats to the marine environment, influencing the health of organisms, their ability to recover their homeostatic status, and in turn endangering biodiversity. Molecular and cellular responses to chemical pollutants, known as biomarkers, are effect-based methodologies useful for detecting exposure and for assessing the effects of pollutants on biota in environmental monitoring. The present review analyzes and discusses the recent literature on the use of biomarkers in the framework of biodiversity conservation. The study shows that pollution biomarkers can be useful tools for monitoring and assessment of pollution threat to marine biodiversity, both in the environmental quality monitoring of protected areas and the assessment of the health status of species at risk. Moreover, key areas of the research that need further development are suggested, such as the development of omics-based biomarkers specifically addressed to conservation purposes and their validation in the field, the extension of the biomarker study to a wider number of endangered species, and the development of organic guidelines for the application of the biomarker approach in support to conservation policies and management.
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