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Popa CL, Dontu SI, Carstea EM, Levei EA, Ioja C, Popa AM, Miclean M, Cadar O. Organochlorine pesticides and dissolved organic matter within a system of urban exorheic lakes. ENVIRONMENTAL MONITORING AND ASSESSMENT 2019; 192:59. [PMID: 31863207 DOI: 10.1007/s10661-019-8003-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 11/29/2019] [Indexed: 06/10/2023]
Abstract
Urban lakes represent the most extensive water bodies in cities and provide blue ecosystem services, by retaining pollutants, offering cultural services, and mitigating climate change. Human activities threaten to decrease the supply of ecosystem services associated with urban lakes. Exorheic lakes play an essential role in reducing and changing the characteristics of pollutants and organic matter along the environmental continuum. This study aims to gain further understanding on the distribution and fate of organochlorine pesticides (OCPs) in relation to fluorescent dissolved organic matter (DOM) within an exorheic lake system, located along Colentina river, Bucharest. Results indicated a historical usage of HCHs, which were present in lake water and sediment samples, in concentrations exceeding the regulatory limits, with potential eco-toxicity on aquatic biota. Decades of intense applications along the river, before OCPs ban, led to their accumulation in sediments and their re-mobilization, each year, after the lakes were drained, dredged, and refilled. Fluorescence measurements revealed that DOM accumulated in certain lakes due to wastewater discharges, and surface runoff, but decreased towards the end of the exorheic lakes through dilution, sedimentation, and biodegradation. The results also showed that fluorescent DOM may have a substantial impact on OCPs cycle in urban lakes and may help to determine the conditions and effectiveness of removing OCPs from water and sediments. These issues contribute to the decrease of ecosystem services supply associated with urban lakes, having multiple hidden consequences on the urban environment.
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Affiliation(s)
- Cristina Liana Popa
- National Institute of Research and Development for Optoelectronics, INOE 2000, 409 Atomistilor Street, P.O. Box MG 5, 077125, Magurele, Romania.
| | - Simona Ionela Dontu
- National Institute of Research and Development for Optoelectronics, INOE 2000, 409 Atomistilor Street, P.O. Box MG 5, 077125, Magurele, Romania
| | - Elfrida Mihaela Carstea
- National Institute of Research and Development for Optoelectronics, INOE 2000, 409 Atomistilor Street, P.O. Box MG 5, 077125, Magurele, Romania
| | - Erika Andrea Levei
- INCDO INOE 2000 Research Institute for Analytical Instrumentation, 67 Donath Street, 400293, Cluj-Napoca, Romania
| | - Cristian Ioja
- Center for Environmental Researches and Impact Studies - CCMESI, University of Bucharest, 010041, Bucharest, Romania
| | - Ana Maria Popa
- Center for Environmental Researches and Impact Studies - CCMESI, University of Bucharest, 010041, Bucharest, Romania
| | - Mirela Miclean
- INCDO INOE 2000 Research Institute for Analytical Instrumentation, 67 Donath Street, 400293, Cluj-Napoca, Romania
| | - Oana Cadar
- INCDO INOE 2000 Research Institute for Analytical Instrumentation, 67 Donath Street, 400293, Cluj-Napoca, Romania
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Wang Y, Yang Q, Huang H. Effective adsorption of trace phosphate and aluminum in realistic water by carbon nanotubes and reduced graphene oxides. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 662:1003-1011. [PMID: 30795478 DOI: 10.1016/j.scitotenv.2019.01.312] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 01/21/2019] [Accepted: 01/24/2019] [Indexed: 05/12/2023]
Abstract
In this study, carbon nanotube (CNT) and reduced graphene oxide (rGO) were studied for their potentials as novel adsorbents for trace concentrations of phosphorus and aluminum in water and wastewater. Static adsorption results demonstrated that CNT and rGO employed in this study removed up to 65.6% of total dissolved Al and 98.9% of P from a natural surface water and a secondary wastewater effluent. Hydrogen-bonding interactions between CNT/rGO and oxyanions were hypothesized to contribute to the adsorption process. Accordingly, acetaminophen (AAP), a pharmaceutical compound known to form hydrogen bonding with CNT, was spiked into the real water as a competitor for P and Al adsorption. Subsequent sorption results showed that the presence of AAP reduced Al and P adsorption by CNT and rGO by 9.3%-18.4% and 11.2%-18.2%, respectively. These results suggest that hydrogen bonding interactions with CNT/rGO influenced the adsorption of P and Al species. In addition, pH effect investigation on Al/P removal further verified the above opinion. Overall, this study provided important evidence and insights into CNT/rGO adsorption of P and Al species from water and wastewater, which expanded our understanding on the ability of carbonaceous nanomaterials for advanced water and wastewater treatment.
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Affiliation(s)
- Yifei Wang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China; State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China
| | - Qing Yang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China
| | - Haiou Huang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China; Department of Environmental Health and Engineering, Bloomberg School of Public Health, The John Hopkins University, 615 North Wolfe Street, MD 21205, USA.
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Wang Y, Yang Q, Dong J, Huang H. Competitive adsorption of PPCP and humic substances by carbon nanotube membranes: Effects of coagulation and PPCP properties. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 619-620:352-359. [PMID: 29156255 DOI: 10.1016/j.scitotenv.2017.11.117] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 11/03/2017] [Accepted: 11/09/2017] [Indexed: 06/07/2023]
Abstract
Natural organic matter (NOM) and pharmaceuticals and personal care products (PPCP) are known to compete for adsorption sites on carbon nanotubes (CNT), resulting in decreasing PPCP adsorption onto CNT. In this study, four types of PPCP, as such acetaminophen (AAP), caffeine (CAF), triclosan (TCS), and carbendazim (CBD) were used to investigate the effects of PPCP properties and NOM coagulation on the competitive adsorption of PPCP and NOM. Coagulation preferentially removed HS from a natural surface water, thereby increasing adsorption of AAP, CAF, TCS and CBD by 19%, 13%, 17% and 11%, respectively. Similar trends were obtained with synthetic natural waters, for which the adsorption of AAP, CAF, TCS, and CBD increased by 29%, 7%, 44% and 69%, respectively, as humic acid (HA) concentration decreased from 10mgL-1 to 0mgL-1. Furthermore, PPCP properties also affected their competition with NOM for adsorption by CNT membranes Because CAF existed in cationic form at pH ranging from 7 to 8.3, its adsorption was less affected by the presence/coagulation of NOM than AAP, CBD, and TCS. Based upon these findings, coagulation has the potential to be integrated with CNT adsorption for the removal of PPCP compounds during advanced drinking water treatment.
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Affiliation(s)
- Yifei Wang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China
| | - Qing Yang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China
| | - Junqing Dong
- School of Bioscience and Bioengineering, South China University of Technology, University Mega Centre, Guangzhou, Guangdong 510006, China
| | - Haiou Huang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China; Department of Environmental Health Sciences, Bloomberg School of Public Health, The John Hopkins University, 615 North Wolfe Street, MD 21205, USA.
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Grillo R, Clemente Z, de Oliveira JL, Campos EVR, Chalupe VC, Jonsson CM, de Lima R, Sanches G, Nishisaka CS, Rosa AH, Oehlke K, Greiner R, Fraceto LF. Chitosan nanoparticles loaded the herbicide paraquat: the influence of the aquatic humic substances on the colloidal stability and toxicity. JOURNAL OF HAZARDOUS MATERIALS 2015; 286:562-572. [PMID: 25636059 DOI: 10.1016/j.jhazmat.2014.12.021] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 12/01/2014] [Accepted: 12/09/2014] [Indexed: 06/04/2023]
Abstract
Polymeric nanoparticles have been developed for several applications, among them as carrier system of pesticides. However, few studies have investigated the fate of these materials in the environment in relation to colloidal stability and toxicity. In nature, humic substances are the main agents responsible for complexation with metals and organic compounds, as well as responsible for the dynamics of these nanoparticles in aquatic and terrestrial environments. In this context, the evaluation of the influence of aquatic humic substances (AHS) on the colloidal stability and toxicity of polymeric nanoparticles of chitosan/tripolyphosphate with or without paraquat was performed. In this study, the nanoparticles were prepared by the ionic gelation method and characterized by size distribution measurements (DLS and NTA), zeta potential, infrared and fluorescence spectroscopy. Allium cepa genotoxicity studies and ecotoxicity assays with the alga Pseudokirchneriella subcapitata were used to investigate the effect of aquatic humic substances (AHS) on the toxicity of this delivery system. No changes were observed in the physical-chemical stability of the nanoparticles due to the presence of AHS using DLS and NTA techniques. However some evidence of interaction between the nanoparticles and AHS was observed by infrared and fluorescence spectroscopies. The ecotoxicity and genotoxicity assays showed that humic substances can decrease the toxic effects of nanoparticles containing paraquat. These results are interesting because they are important for understanding the interaction of these nanostructured carrier systems with species present in aquatic ecosystems such as humic substances, and in this way, opening new perspectives for studies on the dynamics of these carrier systems in the ecosystem.
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Affiliation(s)
- Renato Grillo
- Department of Environmental Engineering, UNESP - Univ. Estadual Paulista, Avenida Três de Março, no. 511, 18087-180 Sorocaba, SP, Brazil; Department of Biochemistry, Institute of Biology, UNICAMP, Cidade Universitária Zeferino Vaz s/n, Campinas, SP, Brazil
| | - Zaira Clemente
- Department of Environmental Engineering, UNESP - Univ. Estadual Paulista, Avenida Três de Março, no. 511, 18087-180 Sorocaba, SP, Brazil; Embrapa Environmental, Jaguariúna, SP, Brazil
| | - Jhones Luis de Oliveira
- Department of Environmental Engineering, UNESP - Univ. Estadual Paulista, Avenida Três de Março, no. 511, 18087-180 Sorocaba, SP, Brazil
| | - Estefânia Vangelie Ramos Campos
- Department of Environmental Engineering, UNESP - Univ. Estadual Paulista, Avenida Três de Março, no. 511, 18087-180 Sorocaba, SP, Brazil; Department of Biochemistry, Institute of Biology, UNICAMP, Cidade Universitária Zeferino Vaz s/n, Campinas, SP, Brazil
| | | | | | - Renata de Lima
- Department of Biotechnology, University of Sorocaba, Sorocaba, SP, Brazil
| | - Gabriela Sanches
- Department of Biotechnology, University of Sorocaba, Sorocaba, SP, Brazil
| | | | - André H Rosa
- Department of Environmental Engineering, UNESP - Univ. Estadual Paulista, Avenida Três de Março, no. 511, 18087-180 Sorocaba, SP, Brazil
| | - Kathleen Oehlke
- Department of Food Technology and Bioprocess Engineering, Max Rubner-Institut, Karlsruhe, Germany
| | - Ralf Greiner
- Department of Food Technology and Bioprocess Engineering, Max Rubner-Institut, Karlsruhe, Germany
| | - Leonardo F Fraceto
- Department of Environmental Engineering, UNESP - Univ. Estadual Paulista, Avenida Três de Março, no. 511, 18087-180 Sorocaba, SP, Brazil; Department of Biochemistry, Institute of Biology, UNICAMP, Cidade Universitária Zeferino Vaz s/n, Campinas, SP, Brazil.
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