1
|
Yamini V, Shanmugam V, Rameshpathy M, Venkatraman G, Ramanathan G, Al Garalleh H, Hashmi A, Brindhadevi K, Devi Rajeswari V. Environmental effects and interaction of nanoparticles on beneficial soil and aquatic microorganisms. ENVIRONMENTAL RESEARCH 2023; 236:116776. [PMID: 37517486 DOI: 10.1016/j.envres.2023.116776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 07/25/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023]
Abstract
A steadily increasing production volume of nanoparticles reflects their numerous industrial and domestic applications. These economic successes come with the potential adverse effects on natural systems that are associated with their presence in the environment. Biological activities and effects of nanoparticles are affected by their entry method together with their specificities like their size, shape, charge, area, and chemical composition. Particles can be classified as safe or dangerous depending on their specific properties. As both aquatic and terrestrial systems suffer from organic and inorganic contamination, nanoparticles remain a sink for these contaminants. Researching the sources, synthesis, fate, and toxicity of nanoparticles has advanced significantly during the last ten years. We summarise nanoparticle pathways throughout the ecosystem and their interactions with beneficial microorganisms in this research. The prevalence of nanoparticles in the ecosystem causes beneficial microorganisms to become hazardous to their cells, which prevents the synthesis of bioactive molecules from undergoing molecular modifications and diminishes the microbe population. Recently, observed concentrations in the field could support predictions of ambient concentrations based on modeling methodologies. The aim is to illustrate the beneficial and negative effects that nanoparticles have on aqueous and terrestrial ecosystems, as well as the methods utilized to reduce their toxicity.
Collapse
Affiliation(s)
- V Yamini
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Venkatkumar Shanmugam
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - M Rameshpathy
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Ganesh Venkatraman
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Gnanasambandan Ramanathan
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Hakim Al Garalleh
- Department of Mathematical Science, College of Engineering, University of Business and Technology, Dahban, Jeddah, 21361, Saudi Arabia
| | - Ahmed Hashmi
- Architectural Engineering Department, College of Engineering, University of Business and Technology - Dahban, Jeddah, 21361, Saudi Arabia
| | - Kathirvel Brindhadevi
- School of Engineering, Lebanese American University, Byblos, Lebanon; University Centre for Research & Development, Department of Civil Engineering, Chandigarh University, Mohali, 140103, India.
| | - V Devi Rajeswari
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India.
| |
Collapse
|
2
|
Wang Z, Dai S, Cowan EA, Dietrich M, Schlesinger WH, Wu Q, Zhou M, Seramur KC, Das D, Vengosh A. Isotopic Signatures and Outputs of Lead from Coal Fly Ash Disposal in China, India, and the United States. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:12259-12269. [PMID: 37556313 DOI: 10.1021/acs.est.3c03456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Despite extensive research and technology to reduce the atmospheric emission of Pb from burning coal for power generation, minimal attention has been paid to Pb associated with coal ash disposal in the environment. This study investigates the isotopic signatures and output rates of Pb in fly ash disposal in China, India, and the United States. Pairwise comparison between feed coal and fly ash samples collected from coal-fired power plants from each country shows that the Pb isotope composition of fly ash largely resembles that of feed coal, and its isotopic distinction allows for tracing the release of Pb from coal fly ash into the environment. Between 2000 and 2020, approx. 236, 56, and 46 Gg Pb from fly ash have been disposed in China, India, and the U.S., respectively, posing a significant environmental burden. A Bayesian Pb isotope mixing model shows that during the past 40 to 70 years, coal fly ash has contributed significantly higher Pb (∼26%) than leaded gasoline (∼7%) to Pb accumulation in the sediments of five freshwater lakes in North Carolina, U.S.A. This implies that the release of disposed coal fly ash Pb at local and regional scales can outweigh that of other anthropogenic Pb sources.
Collapse
Affiliation(s)
- Zhen Wang
- Nicholas School of the Environment, Duke University, Durham, North Carolina 27708, United States
| | - Shifeng Dai
- College of Geoscience and Survey Engineering, China University of Mining and Technology, Beijing 100083, China
| | - Ellen A Cowan
- Department of Geological and Environmental Sciences, Appalachian State University, Boone, North Carolina 28608, United States
| | - Matthew Dietrich
- The Polis Center, IU Luddy School of Informatics, Computing, and Engineering, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202, United States
| | - William H Schlesinger
- Nicholas School of the Environment, Duke University, Durham, North Carolina 27708, United States
| | - Qingru Wu
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Tsinghua University 100084 Beijing, China
| | - Mingxuan Zhou
- College of Geoscience and Survey Engineering, China University of Mining and Technology, Beijing 100083, China
| | - Keith C Seramur
- Department of Geological and Environmental Sciences, Appalachian State University, Boone, North Carolina 28608, United States
| | - Debabrata Das
- Department of Geology, Panjab University, Chandigarh 160014, India
| | - Avner Vengosh
- Nicholas School of the Environment, Duke University, Durham, North Carolina 27708, United States
| |
Collapse
|
3
|
Deonarine A, Schwartz GE, Ruhl LS. Environmental Impacts of Coal Combustion Residuals: Current Understanding and Future Perspectives. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:1855-1869. [PMID: 36693217 DOI: 10.1021/acs.est.2c06094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
On-site solid-waste impoundments, landfills, and receiving water bodies have served as long-term disposal sites for coal combustion residuals (CCRs) across the United States for decades and collectively contain billions of tons of CCR material. CCR components include fine particulate material, minerals, and trace elements such as mercury, arsenic, selenium, lead, etc., which can have deleterious effects on ecosystem functioning and public health. Effects on communities can occur through consumption of drinking water, fish, and other aquatic organisms. The structural failure of impoundments, water infiltration, leakage from impoundments due to poor construction and monitoring, and CCR effluent discharges to water bodies have in the past resulted in harmful environmental impacts. Moreover, the risks posed by CCRs are present to this day, as coal continues to account for 11% of the energy production in the United States. In this Critical Review, the legacy of CCR disposal and the concomitant risks posed to public health and ecosystems are assessed. The resiliency of CCR disposal sites in the context of increased frequency and intensity of storm events and other hazards, such as floods and earthquakes, is also evaluated. We discuss the current state of knowledge on the environmental fate of CCR-derived elements, as well as advances in and limitations of analytical tools, which can improve the current understanding of CCR environmental impacts in order to mitigate the associated risks. An assessment of the 2015 Coal Ash Final Rule is also presented, along with needs to improve monitoring of CCR disposal sites and regulatory enforcement.
Collapse
Affiliation(s)
- Amrika Deonarine
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, 911 Boston Avenue, Lubbock, Texas 79401, United States
| | - Grace E Schwartz
- Department of Chemistry, Wofford College, Spartanburg, South Carolina 29303, United States
| | - Laura S Ruhl
- Department of Earth Sciences, University of Arkansas Little Rock, Little Rock, Arkansas 72204, United States
| |
Collapse
|
4
|
Wu J, Tou F, Guo X, Liu C, Sun Y, Xu M, Liu M, Yang Y. Vast emission of Fe- and Ti-containing nanoparticles from representative coal-fired power plants in China and environmental implications. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:156070. [PMID: 35597359 DOI: 10.1016/j.scitotenv.2022.156070] [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: 03/22/2022] [Revised: 05/13/2022] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
Coal combustion is considered an important source of atmospheric nanoparticles (NPs). However, the underlying information on the emission of NPs from coal-fired power plants (CFPPs) is still lacking. Along these lines, in this study, coal fly ashes (CFAs) were collected from different multi-stage particulate emission control devices (PECDs) in three representative CFPPs in China. The particle size and particle number concentration (PNC) of typical metal-containing NPs (Fe- and Ti-containing NPs) were analyzed by using the single-particle inductively coupled plasma mass (SP-ICP-MS) technology. By increasing the stage of PECDs, the mean particle sizes of NPs gradually declined and the PNCs of Fe- and Ti-containing NPs increased significantly. Specifically, the PNC of final-stage CFA was 3 - 8 times that of the first-stage CFA. A comparison of the electrostatic precipitators (ESPs), fabric filters (FFs), and electrostatic-fabric-integrated precipitators (EFIPs) showed that the state-of-the-art EFIPs exhibited a relatively good NP-removal efficiency with the highest PNCs. In addition, NP hourly emissions in all coal combustion by-products (CCPs) were further calculated in a typical CFPP. The total emissions of Fe- and Ti-containing NPs in all CCPs were 1.87 × 1018 and 1.57 × 1018 particles/h, respectively. NPs were mainly enriched in CFA trapped by PECDs (80% of total emissions). Although the mass of the CFA that escaped through the stack was extremely low, it contained the highest PNCs of Fe- and Ti-containing NPs of all CCPs, accounting for 3.41% and 1.67% of the corresponding total NP emissions. These NPs may also coexist with various toxic metals, such as Zn and Pb, and be released directly into the atmosphere, where they pose a potential risk to human health.
Collapse
Affiliation(s)
- Jiayuan Wu
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Feiyun Tou
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Xingpan Guo
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Chang Liu
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yuan Sun
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Miao Xu
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Min Liu
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yi Yang
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
| |
Collapse
|
5
|
Jadoon S, Schindler M, Wirth MG, Qafoku O, Kovarik L, Perea DE. Atom probe tomography and transmission electron microscopy: a powerful combination to characterize the speciation and distribution of Cu in organic matter. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2022; 24:1228-1242. [PMID: 35838027 DOI: 10.1039/d2em00118g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The large surface areas in porous organic matter (OM) and on the surface of altered minerals control the sequestration of metal(loid)s in contaminated soils and sediments. This study explores the sequestration of Cu by OM in surficial forest soil in close proximity to the Horne smelter, Rouyn-Noranda, Quebec, Canada. The organic-rich soils have elevated concentrations of Cu (Cu = 〈0.75〉 wt%) but lack associations between organic matter (OM) and Cu-sulfides, commonly observed in organic-rich Cu-contaminated soils. This provides a unique opportunity to study the sequestration of Cu by OM in a sulfur-depleted environment using a combination of scanning electron microscopy (SEM), transmission electron microscopy (TEM) and atom probe tomography (APT). In two examined OM particles, Cu is predominantly sequestered as (I) nano- to micrometer-size Cu-bearing spinels, (II) as cuprite (Cu2O) nanoparticles or (III) finely dispersed Cu in association with clusters of magnetite (Fe3O4) nanoparticles embedded in amorphous silica-rich pockets and (IV) in the OM matrix. The occurrence of euhedral crystals and nanoparticles in the single-digit range within the OM matrix indicate that the majority of the nanoparticles formed in situ within the OM particles. A model is developed which proposes that the sequestration of Cu in OM is promoted by (I) the partial mineralization of the OM matrix by amorphous silica; (II) the nucleation of magnetite nanoparticles on highly reactive silanol groups; (III) the diffusion of Cu within mineralized and altered areas of the OM; (IV) the availability of Cu-bearing species, which in turn is controlled by the hydrodynamic properties of the pore channels; (V) the formation of precursors and nucleation of Cu-bearing nanoparticles. This study shows that the combination of SEM, TEM and APT provides new insights into the sequestration of metal contaminants by OM at various scales ranging from the single-digit nano- to micrometer scale.
Collapse
Affiliation(s)
- Sarib Jadoon
- Department of Earth Sciences, University of Manitoba, Winnipeg, MB, Canada R3T 2N2.
| | - Michael Schindler
- Department of Earth Sciences, University of Manitoba, Winnipeg, MB, Canada R3T 2N2.
| | - Mark G Wirth
- Environmental Molecular Sciences Laboratory (EMSL), Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Odeta Qafoku
- Environmental Molecular Sciences Laboratory (EMSL), Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Libor Kovarik
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Daniel E Perea
- Environmental Molecular Sciences Laboratory (EMSL), Pacific Northwest National Laboratory, Richland, WA 99354, USA
| |
Collapse
|
6
|
Huang X, Yan C, Nie M, Chen J, Ding M. Effect of colloidal fluorescence properties on the complexation of chloramphenicol and carbamazepine to the natural aquatic colloids. CHEMOSPHERE 2022; 286:131604. [PMID: 34303905 DOI: 10.1016/j.chemosphere.2021.131604] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 07/06/2021] [Accepted: 07/17/2021] [Indexed: 06/13/2023]
Abstract
The complexation mechanism between pharmaceuticals and natural colloids is still uncertain due to the complexity, heterogeneity, and polydispersity of colloids. Therefore, this study investigated the effect of fluorescence properties on the complexation of chloramphenicol (CAP) and carbamazepine (CBZ) to the colloids from Poyang Lake Basin based on the multiple spectroscopic techniques and methods. Three-dimensional excitation-emission matrix fluorescence spectroscopy-parallel factor analysis results illustrated that two humic-like components and two protein-like components of colloids from the rivers and lakes were identified, with the much higher fluorescence intensity of the protein-like substance observed in lake samples. The protein-like substance decreased dramatically with the addition of CAP and CBZ, suggesting its higher binding capacity towards these drugs, especially for CBZ. In addition, the fluorescence quenching titration was proceeded to explore the binding mechanism between the colloids and the pharmaceuticals. Results of synchronous fluorescence spectra and two-dimensional correlation spectroscopy demonstrated that the fluorescence quenching effect occurred preferentially between the protein-like substances and the pharmaceuticals, with the stronger complexation for CBZ. Ryan-Weber model fitting results showed that the stability constant ranged from 4.02 to 5.04 with the higher binding capacity observed for the tryptophan-like substance. Combined, the fluorescence components in aquatic colloids could be significantly impacted the complexation of the pharmaceuticals. This study provides deep insights into the fate and pollution protection of pharmaceuticals.
Collapse
Affiliation(s)
- Xian Huang
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, 330022, China
| | - Caixia Yan
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, 330022, China.
| | - Minghua Nie
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, 330022, China.
| | - Jie Chen
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, 330022, China
| | - Mingjun Ding
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, 330022, China
| |
Collapse
|
7
|
Yang X, Lu D, Wang W, Yang H, Liu Q, Jiang G. Nano-Tracing: Recent Progress in Sourcing Tracing Technology of Nanoparticles ※. ACTA CHIMICA SINICA 2022. [DOI: 10.6023/a21120612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
8
|
Wang Z, Coyte RM, Cowan EA, Stapleton HM, Dwyer GS, Vengosh A. Evaluation and Integration of Geochemical Indicators for Detecting Trace Levels of Coal Fly Ash in Soils. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:10387-10397. [PMID: 34282893 DOI: 10.1021/acs.est.1c01215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Coal combustion residuals (CCRs), in particular, coal fly ash, are one of the major industrial solid wastes in the U.S., and due to their high concentrations of toxic elements, they could pose environmental and human health risks. Yet detecting coal fly ash in the environment is challenging given its small particle size. Here, we explore the utility and sensitivity of using geochemical indicators (trace elements, Ra nuclides, and Pb stable isotopes), combined with physical observation by optical point counting, for detecting the presence of trace levels of coal fly ash particles in surface soils near two coal-fired power plants in North Carolina and Tennessee. Through experimental work, mixing models, and field data, we show that trace elements can serve as a first-order detection tool for fly ash presence in surface soils; however, the accuracy and sensitivity of detection is limited for cases with low fly ash proportion (i.e., <10%) in the soil, which requires the integration of more robust Ra and Pb isotopic tracers. This study revealed the presence of fly ash particles in surface soils from both the recreational and residential areas, which suggests the fugitive emission of fly ash from the nearby coal-fired power plants.
Collapse
Affiliation(s)
- Zhen Wang
- Nicholas School of the Environment, Duke University, Durham, North Carolina 27708, United States
| | - Rachel M Coyte
- Nicholas School of the Environment, Duke University, Durham, North Carolina 27708, United States
| | - Ellen A Cowan
- Department of Geological and Environmental Sciences, Appalachian State University, Boone, North Carolina 28608, United States
| | - Heather M Stapleton
- Nicholas School of the Environment, Duke University, Durham, North Carolina 27708, United States
| | - Gary S Dwyer
- Nicholas School of the Environment, Duke University, Durham, North Carolina 27708, United States
| | - Avner Vengosh
- Nicholas School of the Environment, Duke University, Durham, North Carolina 27708, United States
| |
Collapse
|
9
|
Wu J, Tou F, Yang Y, Liu C, Hower JC, Baalousha M, Wang G, Liu M, Hochella MF. Metal-Containing Nanoparticles in Low-Rank Coal-Derived Fly Ash from China: Characterization and Implications toward Human Lung Toxicity. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:6644-6654. [PMID: 33969690 DOI: 10.1021/acs.est.1c00434] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Characterization of nanoparticles (NPs) in coal fly ashes (CFAs) is critical for better understanding the potential health-related risks resulting from coal combustion. Based on single-particle (SP)-inductively coupled plasma mass spectrometry (ICP-MS) coupled with transmission electron microscopy techniques, this study is the first to determine the concentrations and sizes of metal-containing NPs in low-rank coal-derived fly ashes. Despite only comprising a minor component of the studied CFAs by mass, NPs were the dominant fraction by particle number. Fe- and Ti-containing NPs were identified as the dominant NPs with their particle number concentration ranging from 2.5 × 107 to 2.5 × 108 particles/mg. In addition, the differences of Fe-/Ti-containing NPs in various CFAs were regulated by the coalification degree of feed coals and combustion conditions of all of the low-rank CFAs tested. In the cases where these NPs in CFAs become airborne and are inhaled, they can be taken up in pulmonary interstitial fluids. This study shows that in Gamble's solution (a lung fluid simulant), 51-87% of Fe and 63-89% of Ti (ratio of the mass of Fe-/Ti-containing NPs to the total mass of Fe/Ti) exist in the NP form and remain suspended in pulmonary fluid simulants. These NPs are bioavailable and may induce lung tissue damage.
Collapse
Affiliation(s)
- Jiayuan Wu
- Key Laboratory of Geographic Information Science (Ministry of Education), School of Geographical Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Feiyun Tou
- Key Laboratory of Geographic Information Science (Ministry of Education), School of Geographical Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yi Yang
- Key Laboratory of Geographic Information Science (Ministry of Education), School of Geographical Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Chang Liu
- Key Laboratory of Geographic Information Science (Ministry of Education), School of Geographical Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - James C Hower
- Center for Applied Energy Research, University of Kentucky, 2540 Research Park Drive, Lexington, Kentucky 40511, United States
- Department of Earth & Environmental Sciences, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Mohammed Baalousha
- Center for Environmental Nanoscience and Risk, Department of Environmental Health Sciences, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina 29201, United State
| | - Gehui Wang
- Key Laboratory of Geographic Information Science (Ministry of Education), School of Geographical Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Min Liu
- Key Laboratory of Geographic Information Science (Ministry of Education), School of Geographical Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Michael F Hochella
- Department of Geosciences, Virginia Tech, Blacksburg, Virginia 24061, United States
- Earth Systems Science Division, Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| |
Collapse
|
10
|
Wang CL, Liu LH, Wang JY, Yu XC, Yan K. Micron-Nanometer Evaporite Mineral Compositions in the Jiangling Depression, Jianghan Basin, China, by Means of Scanning Electron Microscopy. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2021; 21:310-325. [PMID: 33213632 DOI: 10.1166/jnn.2021.18564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Scanning electron microscopy (SEM) was used to analyze and study micron-nanometer evaporite samples collected from Paleocene and Eocene drill cores in the Jiangling Depression. Accordingly, seven beds of potassium-bearing solid rocks were accurately identified. Sylvite, carnallite, syngenite, dolomite, thenardite, anhydrite, glauberite, halite, barite, celestite, and other solid salt minerals were found, and carnallite, syngenite, and thenardite were found for the first time in the Jiangling Depression. Sylvite, syngenite, and carnallite indicate that the Paleogene salt lakes in the Jiangling Depression had evolved to the sylvite stage and that prospecting for solid sylvite would be satisfactory. Micron-nanometer celestite is contained in the evaporites, from which we can infer that strontium may have been provided by deep formation water (or oil-field water). This finding is of great significance to studying the genesis of sylvite sediment in the Jiangling Depression. From the extensive development of primary glauberite beds typical of warm salt minerals in the Shashi Formation, it can be inferred that the late Paleogene paleoclimate in the Jiangling Depression of the Jianghan Basin was dry and hot. Based on the extensive distribution of micron-nanometer pyrite, siderite, iron and Fe₂O₃/FeO ratios in evaporite sediments and color analysis of mudstones, the evaporites in the study area formed in an underwater anoxic, reducing environment during sedimentation. Therefore, the evaporite sediments in the Paleocene-Eocene interval of the Jiangling Depression are proposed to have formed in a saltwater lake sedimentary environment, and the ancient lake was characterized by a deep-water salt lake sedimentary model.
Collapse
Affiliation(s)
- Chun-Lian Wang
- MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
| | - Li-Hong Liu
- Oil & Gas Survey, China Geological Survey, Beijing 100083, China
| | - Jiu-Yi Wang
- MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
| | - Xiao-Can Yu
- State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China
| | - Kai Yan
- MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
| |
Collapse
|
11
|
Adeola HA, Sabiu S, Adekiya TA, Aruleba RT, Aruwa CE, Oyinloye BE. Prospects of nanodentistry for the diagnosis and treatment of maxillofacial pathologies and cancers. Heliyon 2020; 6:e04890. [PMID: 32984600 PMCID: PMC7492852 DOI: 10.1016/j.heliyon.2020.e04890] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 07/31/2020] [Accepted: 09/07/2020] [Indexed: 02/07/2023] Open
Abstract
Despite the commendable milestones achieved in molecular maxillofacial pathology in the last decade, there remains a paucity of utilization of ancillary nanomolecular tools that complement the omics-based approaches. As the advent of omics science transforms our understanding of tumour biology from a phenomenological to a complex network (systems-oriented) paradigm, several ancillary tools have emerged to improve the scope of individualized medicine. Targeted nano drug delivery systems have significantly reduced toxicity of chemotherapeutic agents in a precise manner. Many conventional cancer therapies are limited in efficacy and this has led to the emergence of nanomedical innovations. Despite the success of nanomedicine, a major challenge that persists is tumour heterogeneity and biological complexity. A good understanding of the interaction between inorganic nanoparticles and the biological systems has led to the development of better tools for individualized medicine. Tools such as the composite organic-inorganic nanoparticles (COINs) and the quantum dots (QD) have significantly improved the identification and quantification of disease biomarkers, histopathological detection methods, as well as improving the clinical translation and utility of these nanomaterials. Nanomedicine has lent credence to several multipronged theranostic applications in medicine, and this has improved the medical practice tremendously. Despite the palpable influence of nanomedicine on the delivery of individualized medical therapies, the term "nanodentistry" remains in the background without much hype, albeit some progress has been made in this area. Hence, this review discusses the potential and challenges of nanodentistry in the diagnosis and treatment of maxillofacial pathologies, particularly cancer in resource-limited settings.
Collapse
Affiliation(s)
- Henry A. Adeola
- Department of Oral and Maxillofacial Pathology, Faculty of Dentistry, University of the Western Cape and Tygerberg Hospital, Cape Town South Africa
- Division of Dermatology, Department of Medicine, Faculty of Health Sciences and Groote Schuur Hospital, University of Cape Town, Cape Town South Africa
| | - Saheed Sabiu
- Department of Biotechnology and Food Technology, Durban University of Technology, Steve Biko Campus, Steve Biko Road, Berea, Durban 4001, South Africa
| | - Tayo A. Adekiya
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Science, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown, 2193, South Africa
| | - Raphael T. Aruleba
- Department of Molecular and Cell Biology, Faculty of Science, University of Cape Town, Cape Town 7701, South Africa
| | - Christiana E. Aruwa
- Department of Biotechnology and Food Technology, Durban University of Technology, Steve Biko Campus, Steve Biko Road, Berea, Durban 4001, South Africa
| | - Babatunji E. Oyinloye
- Phytomedicine, Biochemical Toxicology and Biotechnology Research Laboratories, Department of Biochemistry, Faculty of Sciences, Afe Babalola University, P.M.B 5454 Ado Ekiti 360001, Nigeria
| |
Collapse
|
12
|
Monasterio-Guillot L, Alvarez-Lloret P, Ibañez-Velasco A, Fernandez-Martinez A, Ruiz-Agudo E, Rodriguez-Navarro C. CO2 sequestration and simultaneous zeolite production by carbonation of coal fly ash: Impact on the trapping of toxic elements. J CO2 UTIL 2020. [DOI: 10.1016/j.jcou.2020.101263] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
13
|
McDaniel DK, Ringel-Scaia VM, Morrison HA, Coutermarsh-Ott S, Council-Troche M, Angle JW, Perry JB, Davis G, Leng W, Minarchick V, Yang Y, Chen B, Reece SW, Brown DA, Cecere TE, Brown JM, Gowdy KM, Hochella MF, Allen IC. Pulmonary Exposure to Magnéli Phase Titanium Suboxides Results in Significant Macrophage Abnormalities and Decreased Lung Function. Front Immunol 2019; 10:2714. [PMID: 31849940 PMCID: PMC6892980 DOI: 10.3389/fimmu.2019.02714] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 11/05/2019] [Indexed: 01/03/2023] Open
Abstract
Coal is one of the most abundant and economic sources for global energy production. However, the burning of coal is widely recognized as a significant contributor to atmospheric particulate matter linked to deleterious respiratory impacts. Recently, we have discovered that burning coal generates large quantities of otherwise rare Magnéli phase titanium suboxides from TiO2 minerals naturally present in coal. These nanoscale Magnéli phases are biologically active without photostimulation and toxic to airway epithelial cells in vitro and to zebrafish in vivo. Here, we sought to determine the clinical and physiological impact of pulmonary exposure to Magnéli phases using mice as mammalian model organisms. Mice were exposed to the most frequently found Magnéli phases, Ti6O11, at 100 parts per million (ppm) via intratracheal administration. Local and systemic titanium concentrations, lung pathology, and changes in airway mechanics were assessed. Additional mechanistic studies were conducted with primary bone marrow derived macrophages. Our results indicate that macrophages are the cell type most impacted by exposure to these nanoscale particles. Following phagocytosis, macrophages fail to properly eliminate Magnéli phases, resulting in increased oxidative stress, mitochondrial dysfunction, and ultimately apoptosis. In the lungs, these nanoparticles become concentrated in macrophages, resulting in a feedback loop of reactive oxygen species production, cell death, and the initiation of gene expression profiles consistent with lung injury within 6 weeks of exposure. Chronic exposure and accumulation of Magnéli phases ultimately results in significantly reduced lung function impacting airway resistance, compliance, and elastance. Together, these studies demonstrate that Magnéli phases are toxic in the mammalian airway and are likely a significant nanoscale environmental pollutant, especially in geographic regions where coal combustion is a major contributor to atmospheric particulate matter.
Collapse
Affiliation(s)
- Dylan K. McDaniel
- Department of Biomedical Sciences and Pathobiology, VA-MD College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
| | - Veronica M. Ringel-Scaia
- Graduate Program in Translational Biology, Medicine and Health, Virginia Tech, Blacksburg, VA, United States
| | - Holly A. Morrison
- Department of Biomedical Sciences and Pathobiology, VA-MD College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
| | - Sheryl Coutermarsh-Ott
- Department of Biomedical Sciences and Pathobiology, VA-MD College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
| | - McAlister Council-Troche
- Analytical Research Laboratory, VA-MD College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
| | - Jonathan W. Angle
- Department of Materials Science and Engineering, Virginia Tech, Blacksburg, VA, United States
| | - Justin B. Perry
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA, United States
| | - Grace Davis
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA, United States
| | - Weinan Leng
- National Center for Earth and Environmental Nanotechnology Infrastructure, Virginia Tech, Blacksburg, VA, United States
| | - Valerie Minarchick
- Department of Pharmaceutical Sciences, University of Colorado, Anschutz Medical, Aurora, CO, United States
| | - Yi Yang
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai, China
| | - Bo Chen
- Department of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Sky W. Reece
- Department of Pharmacology & Toxicology, Brody School of Medicine, East Carolina University, Greenville, NC, United States
| | - David A. Brown
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA, United States
| | - Thomas E. Cecere
- Department of Biomedical Sciences and Pathobiology, VA-MD College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
| | - Jared M. Brown
- Department of Pharmaceutical Sciences, University of Colorado, Anschutz Medical, Aurora, CO, United States
| | - Kymberly M. Gowdy
- Department of Pharmacology & Toxicology, Brody School of Medicine, East Carolina University, Greenville, NC, United States
| | | | - Irving C. Allen
- Department of Biomedical Sciences and Pathobiology, VA-MD College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
- Graduate Program in Translational Biology, Medicine and Health, Virginia Tech, Blacksburg, VA, United States
| |
Collapse
|
14
|
Vengosh A, Cowan EA, Coyte RM, Kondash AJ, Wang Z, Brandt JE, Dwyer GS. Evidence for unmonitored coal ash spills in Sutton Lake, North Carolina: Implications for contamination of lake ecosystems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 686:1090-1103. [PMID: 31200305 DOI: 10.1016/j.scitotenv.2019.05.188] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/11/2019] [Accepted: 05/14/2019] [Indexed: 06/09/2023]
Abstract
Coal combustion residuals (CCRs, also known as "coal ash") contain high concentrations of toxic and carcinogenic elements that can pose ecological and human health risks upon their release into the environment. About half of the CCRs that are generated annually in the U.S. are stored in coal ash impoundments and landfills, in most cases adjacent to coal plants and waterways. Leaking of coal ash ponds and CCR spills are major environmental concerns. One factor which may impact the safety of CCRs stored in impoundments and landfills is the storage area's predisposition to flooding. The southeastern U.S., in particular, has a large number of coal ash impoundments located in areas that are vulnerable to flooding. In order to test for the possible presence of CCR solids in lake sediments following Hurricane Florence, we analyzed the magnetic susceptibility, microscopic screening, trace element composition, and strontium isotope ratios of bottom sediments collected in 2015 and in 2018 from Sutton Lake in eastern North Carolina and compared them to a reference lake. The results suggest multiple, apparently previously unmonitored, CCR spills into Sutton Lake from adjacent CCR storage sites. The enrichment of metals in Sutton Lake sediments, particularly those with known ecological impact such as As, Se, Cu, Sb, Ni, Cd, V, and Tl, was similar to or even higher than those in stream sediments impacted by the Tennessee Valley Authority (TVA) in Kingston, Tennessee, and the Dan River, North Carolina coal ash spills, and exceeded ecological screening standards for sediments. High levels of contaminants were also found in leachates extracted from Sutton Lake sediments and co-occurring pore water, reflecting their mobilization to the ambient environment. These findings highlight the risks of large-scale unmonitored spills of coal ash solids from storage facilities following major storm events and contamination of nearby water resources throughout the southeastern U.S.
Collapse
Affiliation(s)
- Avner Vengosh
- Nicholas School of the Environment, Duke University, Durham, NC 27708, United States.
| | - Ellen A Cowan
- Department of Geological and Environmental Sciences, Appalachian State University, Boone, NC 28608, United States
| | - Rachel M Coyte
- Nicholas School of the Environment, Duke University, Durham, NC 27708, United States
| | - Andrew J Kondash
- Nicholas School of the Environment, Duke University, Durham, NC 27708, United States
| | - Zhen Wang
- Nicholas School of the Environment, Duke University, Durham, NC 27708, United States
| | - Jessica E Brandt
- Nicholas School of the Environment, Duke University, Durham, NC 27708, United States
| | - Gary S Dwyer
- Nicholas School of the Environment, Duke University, Durham, NC 27708, United States
| |
Collapse
|
15
|
Wang J. Short-term geochemical investigation and assessment of dissolved elements from simulated ash reclaimed soil into groundwater. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 247:302-311. [PMID: 30685671 DOI: 10.1016/j.envpol.2019.01.060] [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: 10/26/2018] [Revised: 12/24/2018] [Accepted: 01/16/2019] [Indexed: 06/09/2023]
Abstract
A soil column migration trough was used to study the leaching behavior and geochemical partitioning of fifteen elements Al, As, Cr, Cu, Fe, Mg, Sn, Sb, Zn, V, Co, Mn, Pb, Ni and Cd in simulated ash reclaimed soil. According to the results of cluster analysis for the sampling stations, there were three clusters: Cluster 1 of 7 wells with relative good groundwater quality originated from the background control area, Cluster 2 of 9 wells with worst groundwater quality in the downstream parts of the simulated ash reclaimed soil, and Cluster 3 of 2 wells with representative of samples influenced by the combined effect of injection of leaching solution and the main current. Statistical analysis identified five factor types that accounted for 83.055% of the total variance, which declined in the order: ash-soil rate > leaching intensity > water depths > flow velocity > leaching time. As, Sb, Cd, Pb and Ni were the dominant contaminants. The water around ash reclaimed soil was unsuitable for drinking. As, Mn, Cd, Sb, Co and V were the largest contributors to health risks. Soils reclaimed with fly ash can consequently be a long-time source for the transfer of toxic elements into groundwater.
Collapse
Affiliation(s)
- Jiao Wang
- Environment and Resources College, Shanxi University, No.92 Wucheng Rd., Taiyuan, 030006, China.
| |
Collapse
|
16
|
Schindler M, Mantha H, Hochella MF. The formation of spinel-group minerals in contaminated soils: the sequestration of metal(loid)s by unexpected incidental nanoparticles. GEOCHEMICAL TRANSACTIONS 2019; 20:1. [PMID: 30868335 PMCID: PMC6743039 DOI: 10.1186/s12932-019-0061-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/01/2019] [Indexed: 06/09/2023]
Abstract
Mineralogical studies of contaminated soils affected by smelter emission and dust from mining activities indicate that minerals of the spinel group are one of the common hosts of metal-bearing contaminants. Spinel group minerals typically originate from high temperature processes, but an increasing number of studies indicate that metal-bearing spinel group minerals can also form under ambient Earth surface conditions in surficial soils. In this contribution to honor Donald Sparks, we show that the spinels Zn-bearing magnetite (Zn0.5Fe2.5O4) and minium (Pb3O4) form during low temperature alteration of Pb-bearing silica glass in surficial organic rich soils in proximity to a former Cu-smelter in Timmins, Ontario, Canada. The glass most likely formed during high-temperature processes and has been either emitted by the smelter or wind-blown from waste rock piles to near-by soils. The alteration of the glass by percolating pore solutions has resulted in the formation of large micrometer-size dendritic etch features and in nanometer-size dendritic alteration halos composed of nano-size prismatic crystals of Zn-rich magnetite and spherical nanoparticles of minium. Both spinel-type phases are embedded in an amorphous silica matrix which formed during the alteration of the glass at low temperature. A review on the occurrence of spinel-group minerals in smelter-affected soils or mine tailings indicates that the formation of these minerals under ambient Earth surface conditions is quite common and often results in the sequestration of contaminants such as Cu, Ni, Zn and Sb. The pedogenic spinels often occur as euhedral crystals in nano-size mineral assemblages within alteration features such as dendritic etch patterns, mineral surface coatings and mineralized organic matter. Their well-developed crystal forms indicate that (a) they have not formed during a rapid cooling process in a smelter or refinery which typically creates spherical particulate matter, and (b) they have not been part of particulate matter added via fluvial or Aeolian processes which most commonly yield anhedral morphologies. The formation of nano-size spinel-group minerals in low temperature environmental settings may lead to the long-term storage of metal(loid)s in mineral phases and their transport over vast distances via fluvial, alluvial and Aeolian processes.
Collapse
Affiliation(s)
- Michael Schindler
- Department of Earth Sciences, Laurentian University, Sudbury, ON Canada
| | - Haley Mantha
- Department of Chemistry, Laurentian University, Sudbury, ON Canada
| | - Michael F. Hochella
- Department of Geosciences, Virginia Tech, Blacksburg, VA 24061 USA
- Subsurface Science and Technology Group, Pacific Northwest National Laboratory, Richland, WA 99352 USA
| |
Collapse
|
17
|
Yin K, Chan WP, Dou X, Lisak G, Chang VWC. Vertical distribution of heavy metals in seawater column during IBA construction in land reclamation - Re-exploration of a large-scale field trial experiment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 654:356-364. [PMID: 30447575 DOI: 10.1016/j.scitotenv.2018.10.407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 10/29/2018] [Accepted: 10/29/2018] [Indexed: 06/09/2023]
Abstract
Data from large-scale field trial experiments simulating the application of incineration bottom ash (IBA) for land reclamation were re-explored, to understand the spot-specific leaching characteristics and re-adsorption of heavy metals associated with various reclamation scenarios. Data showed that IBA leaching changed significantly as a function of seawater depth rather than time. The application of a chute had a minor effect on the total metal leached amounts; however, it would magnify the gradient of leaching concentrations across depths. Metal re-adsorption occurred within half an hour after IBA dumping, which however was significantly alleviated when a chute was applied. It may be ascribed to various degrees of contact with seawater of IBA, seawater movements and particle resuspension. Batch leaching tests from the laboratory under different L/S ratios were conducted as the references to "effective" leaching behaviors in the large-scale experiments, suggesting that the batch leaching test with the liquid to solid ratio = 10 provide a closer estimation of IBA leaching concentrations during land reclamation. As the current study took account of major field factors during land reclamation, including seawater depth (m), IBA loading (ton), IBA dropping method, particle dispersive area (m2), and settling time (min), these findings are valuable for the risk assessment of IBA utilization in land reclamation.
Collapse
Affiliation(s)
- Ke Yin
- Residue and Resource Reclamation Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, 637141, Singapore; Department of Environmental Engineering, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, Jiangsu Province, China.
| | - Wei-Ping Chan
- Residue and Resource Reclamation Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, 637141, Singapore
| | - Xiaomin Dou
- Residue and Resource Reclamation Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, 637141, Singapore
| | - Grzegorz Lisak
- Residue and Resource Reclamation Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
| | - Victor Wei-Chung Chang
- Department of Civil Engineering, 23 College Walk, Monash University, Victoria 3800, Australia.
| |
Collapse
|
18
|
Westerhoff P, Atkinson A, Fortner J, Wong MS, Zimmerman J, Gardea-Torresdey J, Ranville J, Herckes P. Low risk posed by engineered and incidental nanoparticles in drinking water. NATURE NANOTECHNOLOGY 2018; 13:661-669. [PMID: 30082812 DOI: 10.1038/s41565-018-0217-9] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 06/20/2018] [Accepted: 06/29/2018] [Indexed: 05/06/2023]
Abstract
Natural nanoparticles (NNPs) in rivers, lakes, oceans and ground water predate humans, but engineered nanoparticles (ENPs) are emerging as potential pollutants due to increasing regulatory and public perception concerns. This Review contrasts the sources, composition and potential occurrence of NNPs (for example, two-dimensional clays, multifunctional viruses and metal oxides) and ENPs in surface water, after centralized drinking water treatment, and in tap water. While analytical detection challenges exist, ENPs are currently orders of magnitude less common than NNPs in waters that flow into drinking water treatment plants. Because such plants are designed to remove small-sized NNPs, they are also very good at removing ENPs. Consequently, ENP concentrations in tap water are extremely low and pose low risk during ingestion. However, after leaving drinking water treatment plants, corrosion by-products released from distribution pipes or in-home premise plumbing can release incidental nanoparticles into tap water. The occurrence and toxicity of incidental nanoparticles, rather than ENPs, should therefore be the focus of future research.
Collapse
Affiliation(s)
- Paul Westerhoff
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ, USA.
| | - Ariel Atkinson
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ, USA
| | - John Fortner
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, MO, USA
| | - Michael S Wong
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Department of Chemical Engineering, Rice University, Houston, TX, USA
| | - Julie Zimmerman
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, USA
| | - Jorge Gardea-Torresdey
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Department of Chemistry, University of Texas - El Paso, El Paso, TX, USA
| | - James Ranville
- Department of Chemistry and Geochemistry, Colorado School of Mines, Golden, CO, USA
| | - Pierre Herckes
- School of Molecular Sciences, Arizona State University, Tempe, AZ, USA
| |
Collapse
|
19
|
Piechulek A, von Mikecz A. Life span-resolved nanotoxicology enables identification of age-associated neuromuscular vulnerabilities in the nematode Caenorhabditis elegans. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 233:1095-1103. [PMID: 29031405 DOI: 10.1016/j.envpol.2017.10.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 10/03/2017] [Accepted: 10/04/2017] [Indexed: 06/07/2023]
Abstract
At present, the majority of investigations concerning nanotoxicology in the nematode C. elegans address short-term effects. While this approach allows for the identification of uptake pathways, exposition and acute toxicity, nanoparticle-organism interactions that manifest later in the adult life of C. elegans are missed. Here we show that a microhabitat composed of liquid S-medium and live bacteria in microtiter wells prolongs C. elegans longevity and is optimally suited to monitor chronic eNP-effects over the entire life span (about 34 days) of the nematode. Silver (Ag) nanoparticles reduced C. elegans life span in concentrations ≥10 μg/mL, whereas nano ZnO and CeO2 (1-160 μg/mL) had no effect on longevity. Monitoring of locomotion behaviors throughout the entire life span of C. elegans showed that Ag NPs accelerate the age-associated decline of swimming and increase of uncoordinated movements at concentrations of ≥10 μg/mL, whereas neuromuscular defects did not occur in response to ZnO and CeO2 NPs. By means of a fluorescing reporter worm expressing tryptophan hydroxylase-1::DsRed Ag NP-induced behavioral defects were correlated to axonal protein aggregation and neurodegeneration in single serotonergic HSN as well as sensory ADF neurons. Notably, serotonergic ADF neurons represented a sensitive target for Ag NPs in comparison to GABAergic neurons that showed no signs of degeneration under the same conditions. We conclude that due to its analogy to the jellylike boom culture of C. elegans on microbe-rich rotting plant material liquid S-medium culture in spatially confined microtiter wells represents a relevant as well as practical tool for comparative identification of age-resolved nanoparticle effects and vulnerabilities in a significant target organism. Consistent with this, specifically middle-aged nematodes showed premature neuromuscular defects after Ag NP-exposure.
Collapse
Affiliation(s)
- Annette Piechulek
- IUF - Leibniz Research Institute for Environmental Medicine, Heinrich-Heine-University Duesseldorf, Germany
| | - Anna von Mikecz
- IUF - Leibniz Research Institute for Environmental Medicine, Heinrich-Heine-University Duesseldorf, Germany.
| |
Collapse
|
20
|
Schindler M, Hochella MF. Sequestration of Pb-Zn-Sb- and As-bearing incidental nanoparticles by mineral surface coatings and mineralized organic matter in soils. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2017; 19:1016-1027. [PMID: 28792042 DOI: 10.1039/c7em00202e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nanoparticles (NPs) often play significant roles in dictating the transport, distribution, bioavailability and toxicity of contaminants in the environment. Incidental NPs (i.e. NPs of anthropogenic origin but not purposely engineered) are often overlooked in contaminant transport and fate studies; yet in many systems they dominate contaminant transport processes. Using surficial contaminated regosols from Trail, British Columbia, Canada, a metal smelting and refining area along the banks of the Columbia River, we show that sequestration of Pb-, Zn-, Sb-, and As-bearing incidental NPs is strongly influenced by their aggregation, crystal growth, and/or particle attachment to mineral surface coatings (MSC) and in mineralized organic matter (MOM). Transmission electron microscopy shows the occurrence of NPs of anglesite (PbSO4), Fe-As-phosphate, kintoreite (Pb[(Fe,Al)3(P(As)O4)(PO3(OH))(OH)6]), and franklinite (ZnFe2O4) in matrices of amorphous silica which retain different stages of their agglomeration and aggregation. Other identified nano-size phases in the MSC and MOM indicate a complex and previously unrecognized mineralogy of Pb-, Zn-, Sb-, and As-phase in surficial soils. Mineralogical complexity and the various sequestration processes observed in this study indicate a new dimension of nano-scale processes on mineral surfaces and organic matter that have been previously overlooked when studying the fate of contaminants with bulk-analytical tools such as micro-X-ray diffraction or synchrotron-based spectroscopic methods.
Collapse
Affiliation(s)
- Michael Schindler
- Department of Earth Sciences, Laurentian University, Sudbury, ON, Canada.
| | | |
Collapse
|
21
|
Yang Y, Chen B, Hower J, Schindler M, Winkler C, Brandt J, Di Giulio R, Ge J, Liu M, Fu Y, Zhang L, Chen Y, Priya S, Hochella MF. Discovery and ramifications of incidental Magnéli phase generation and release from industrial coal-burning. Nat Commun 2017; 8:194. [PMID: 28790379 PMCID: PMC5548795 DOI: 10.1038/s41467-017-00276-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 06/19/2017] [Indexed: 02/04/2023] Open
Abstract
Coal, as one of the most economic and abundant energy sources, remains the leading fuel for producing electricity worldwide. Yet, burning coal produces more global warming CO2 relative to all other fossil fuels, and it is a major contributor to atmospheric particulate matter known to have a deleterious respiratory and cardiovascular impact in humans, especially in China and India. Here we have discovered that burning coal also produces large quantities of otherwise rare Magnéli phases (Ti x O2x-1 with 4 ≤ x ≤ 9) from TiO2 minerals naturally present in coal. This provides a new tracer for tracking solid-state emissions worldwide from industrial coal-burning. In its first toxicity testing, we have also shown that nanoscale Magnéli phases have potential toxicity pathways that are not photoactive like TiO2 phases, but instead seem to be biologically active without photostimulation. In the future, these phases should be thoroughly tested for their toxicity in the human lung.Solid-state emissions from coal burning remain an environmental concern. Here, the authors have found that TiO2 minerals present in coal are converted into titanium suboxides during burning, and initial biotoxicity screening suggests that further testing is needed to look into human lung consequences.
Collapse
Affiliation(s)
- Yi Yang
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.,Department of Geosciences, Virginia Tech, Blacksburg, VA, 24061, USA.,State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, China
| | - Bo Chen
- Center for Energy Harvesting Materials and Systems, 310 Durham Hall, Virginia Tech, Blacksburg, VA, 24061, USA
| | - James Hower
- Center for Applied Energy Research, 2540 Research Park Drive, Lexington, KY, 40511, USA
| | - Michael Schindler
- Department of Earth Sciences, Laurentian University, Sudbury, ON, Canada, P3E 2C6
| | - Christopher Winkler
- Nanoscale Characterization and Fabrication Laboratory, Institute for Critical Technology and Applied Science, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Jessica Brandt
- Nicholas School of the Environment, Levine Science Research Center, Duke University, Durham, NC, 27708-0328, USA
| | - Richard Di Giulio
- Nicholas School of the Environment, Levine Science Research Center, Duke University, Durham, NC, 27708-0328, USA
| | - Jianping Ge
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, China
| | - Min Liu
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Yuhao Fu
- Key Laboratory of Mobile Materials MOE, State Key Laboratory of Superhard Materials, and Department of Materials Science, Jilin University, Changchun, 130012, China
| | - Lijun Zhang
- Key Laboratory of Mobile Materials MOE, State Key Laboratory of Superhard Materials, and Department of Materials Science, Jilin University, Changchun, 130012, China
| | - Yuru Chen
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Shashank Priya
- Center for Energy Harvesting Materials and Systems, 310 Durham Hall, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Michael F Hochella
- Department of Geosciences, Virginia Tech, Blacksburg, VA, 24061, USA. .,Geosciences Group, Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA.
| |
Collapse
|
22
|
Lefticariu L, Sutton SR, Bender KS, Lefticariu M, Pentrak M, Stucki JW. Impacts of detrital nano- and micro-scale particles (dNP) on contaminant dynamics in a coal mine AMD treatment system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 575:941-955. [PMID: 27743654 DOI: 10.1016/j.scitotenv.2016.09.154] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 09/11/2016] [Accepted: 09/18/2016] [Indexed: 06/06/2023]
Abstract
Pollutants in acid mine drainage (AMD) are usually sequestered in neoformed nano- and micro-scale particles (nNP) through precipitation, co-precipitation, and sorption. Subsequent biogeochemical processes may control nNP stability and thus long-term contaminant immobilization. Mineralogical, chemical, and microbiological data collected from sediments accumulated over a six-year period in a coal-mine AMD treatment system were used to identify the pathways of contaminant dynamics. We present evidence that detrital nano- and micron-scale particles (dNP), composed mostly of clay minerals originating from the partial weathering of coal-mine waste, mediated biogeochemical processes that catalyzed AMD contaminant (1) immobilization by facilitating heterogeneous nucleation and growth of nNP in oxic zones, and (2) remobilization by promoting phase transformation and reductive dissolution of nNP in anoxic zones. We found that dNP were relatively stable under acidic conditions and estimated a dNP content of ~0.1g/L in the influent AMD. In the AMD sediments, the initial nNP precipitates were schwertmannite and poorly crystalline goethite, which transformed to well-crystallized goethite, the primary nNP repository. Subsequent reductive dissolution of nNP resulted in the remobilization of up to 98% of S and 95% of Fe accompanied by the formation of a compact dNP layer. Effective treatment of pollutants could be enhanced by better understanding the complex, dynamic role dNP play in mediating biogeochemical processes and contaminant dynamics at coal-mine impacted sites.
Collapse
Affiliation(s)
- Liliana Lefticariu
- Department of Geology, Southern Illinois University, Carbondale, IL 62901, USA; Environmental Resources and Policy Program, Southern Illinois University, Carbondale, IL 62901, USA.
| | - Stephen R Sutton
- Department of Geophysical Sciences, University of Chicago, Chicago, IL 60637, USA; Center for Advanced Radiation Sources, University of Chicago, Chicago, IL 60637, USA
| | - Kelly S Bender
- Department of Microbiology, Southern Illinois University, Carbondale, IL 62901, USA
| | - Mihai Lefticariu
- Mass Spectrometry Facility, Southern Illinois University, Carbondale, IL 62901, USA
| | - Martin Pentrak
- Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Joseph W Stucki
- Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| |
Collapse
|
23
|
|
24
|
Harkness JS, Sulkin B, Vengosh A. Evidence for Coal Ash Ponds Leaking in the Southeastern United States. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:6583-6592. [PMID: 27286270 DOI: 10.1021/acs.est.6b01727] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Coal combustion residuals (CCRs), the largest industrial waste in the United States, are mainly stored in surface impoundments and landfills. Here, we examine the geochemistry of seeps and surface water from seven sites and shallow groundwater from 15 sites in five states (Tennessee, Kentucky, Georgia, Virginia, and North Carolina) to evaluate possible leaking from coal ash ponds. The assessment for groundwater impacts at the 14 sites in North Carolina was based on state-archived monitoring well data. Boron and strontium exceeded background values of 100 and 150 μg/L, respectively, at all sites, and the high concentrations were associated with low δ(11)B (-9‰ to +8‰) and radiogenic (87)Sr/(86)Sr (0.7070 to 0.7120) isotopic fingerprints that are characteristic of coal ash at all but one site. Concentrations of CCR contaminants, including SO4, Ca, Mn, Fe, Se, As, Mo, and V above background levels, were also identified at all sites, but contamination levels above drinking water and ecological standards were observed in 10 out of 24 samples of impacted surface water. Out of 165 monitoring wells, 65 were impacted with high B levels and 49 had high CCR-contaminant levels. Distinct isotope fingerprints, combined with elevated levels of CCR tracers, provide strong evidence for the leaking of coal ash ponds to adjacent surface water and shallow groundwater. Given the large number of coal ash impoundments throughout the United States, the systematic evidence for leaking of coal ash ponds shown in this study highlights potential environmental risks from unlined coal ash ponds.
Collapse
Affiliation(s)
- Jennifer S Harkness
- Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University , Durham, North Carolina 27708, United States
| | - Barry Sulkin
- Environmental Consultant , Nashville, Tennessee, 37218, United States
| | - Avner Vengosh
- Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University , Durham, North Carolina 27708, United States
| |
Collapse
|
25
|
Yan C, Nie M, Lead JR, Yang Y, Zhou J, Merrifield R, Baalousha M. Application of a multi-method approach in characterization of natural aquatic colloids from different sources along Huangpu River in Shanghai, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 554-555:228-236. [PMID: 26950637 DOI: 10.1016/j.scitotenv.2016.02.198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 02/27/2016] [Accepted: 02/28/2016] [Indexed: 06/05/2023]
Abstract
Natural colloid properties and the impact of human activities on these properties are important considerations for studies seeking to understand the fate and transport of pollutants. In this study, the relationship between size and fluorescence properties of natural colloids from 4 different sources were quantified using a multi-method analytical approach including UV-visible and fluorescence spectroscopy, flow field flow fractionation (FlFFF) coupled online to fluorescence spectrometer, and atomic force microscopy (AFM). Results indicate that colloids from pristine natural river water have higher aromaticity and humification, higher fluorescent intensity, and smaller size compared to those from the rivers impacted by livestock. The majority of colloids are smaller than 10nm in size as measured by AFM and FlFFF. Colloid size measured by FlFFF coupled to fluorescence spectroscopy increases in the order peak C (Ex/Em at 300-340/400-460 nm)<peak D (Ex/Em at 210-230/340-360 nm)<peak T (Ex/Em at 270-280/330-370 nm)<peak A (Ex/Em at 210-250/400-460 nm), revealing that optical properties such as fluorescence are correlated with size. This trend is confirmed by the principal component analysis, which demonstrates that the first principal component (PC1) reflecting colloid optical properties decrease with the increase in PC3 which is correlated to the colloid size.
Collapse
Affiliation(s)
- Caixia Yan
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China; Center for Environmental Nanoscience and Risk, Arnold School of Public Health, University of South Carolina, 921 Assembly Street, Columbia 29208, USA; State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Minghua Nie
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China
| | - Jamie R Lead
- Center for Environmental Nanoscience and Risk, Arnold School of Public Health, University of South Carolina, 921 Assembly Street, Columbia 29208, USA
| | - Yi Yang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China; Key Laboratory of Geographic Information Science of the Ministry of Education, Department of Geosciences, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, China
| | - Junliang Zhou
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Ruth Merrifield
- Center for Environmental Nanoscience and Risk, Arnold School of Public Health, University of South Carolina, 921 Assembly Street, Columbia 29208, USA
| | - Mohammed Baalousha
- Center for Environmental Nanoscience and Risk, Arnold School of Public Health, University of South Carolina, 921 Assembly Street, Columbia 29208, USA.
| |
Collapse
|
26
|
Liu G, Cai Y, Hernandez D, Schrlau J, Allen M. Mobility and speciation of arsenic in the coal fly ashes collected from the Savannah River Site (SRS). CHEMOSPHERE 2016; 151:138-144. [PMID: 26933905 DOI: 10.1016/j.chemosphere.2016.02.071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 02/03/2016] [Accepted: 02/16/2016] [Indexed: 06/05/2023]
Abstract
Arsenic (As) leaching from coal fly ash stockpiled at waste disposal sites is a source of environmental concern. An array of techniques including batch extraction and column leaching tests, in combination with speciation analysis of chemically specific As species, was employed to evaluate the mobility of As in fly ashes collected from the U.S. DOE Savannah River Site. The results obtained using the U.S. EPA Toxicity Characteristic Leaching Procedure (TCLP), a two-step sequential extraction technique, and continuous column leaching experiments suggest that only a small portion of total As in the fly ashes was mobile, but mobilizable As could be a considerable fraction (3.1-43%), varying inversely with alkalinity of fly ash. Speciation analysis by using phosphate extraction suggests that arsenate (As(V)) was the major extractable species in the fly ash samples. During the column leaching experiment, however, it was observed that arsenite (As(III)) was an important species leached out of the fly ashes, indicating species conversion during the leaching process. The matrix-bound As(V) within the fly ash, once being released from the solid matrix, could be converted to As(III) during its transport inside the column. The pHs of leachates and fly ashes (both acidic in column leaching experiments here) could be related to the dominance of As(III) in the effluents.
Collapse
Affiliation(s)
- Guangliang Liu
- Institute of Environment and Health, Jianghan University, Wuhan, 430056, China; Department of Chemistry & Biochemistry, Southeast Environmental Research Center, Florida International University, Miami, FL, 33199, USA.
| | - Yong Cai
- Institute of Environment and Health, Jianghan University, Wuhan, 430056, China; Department of Chemistry & Biochemistry, Southeast Environmental Research Center, Florida International University, Miami, FL, 33199, USA
| | - Damaris Hernandez
- Department of Chemistry & Biochemistry, Southeast Environmental Research Center, Florida International University, Miami, FL, 33199, USA
| | - Jill Schrlau
- Department of Chemistry & Biochemistry, Southeast Environmental Research Center, Florida International University, Miami, FL, 33199, USA
| | - Marshall Allen
- Applied Research Center (ARC), Florida International University, Miami, FL, 33174, USA
| |
Collapse
|
27
|
Civeira MS, Ramos CG, Oliveira MLS, Kautzmann RM, Taffarel SR, Teixeira EC, Silva LFO. Nano-mineralogy of suspended sediment during the beginning of coal rejects spill. CHEMOSPHERE 2016; 145:142-147. [PMID: 26688250 DOI: 10.1016/j.chemosphere.2015.11.059] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/09/2015] [Accepted: 11/15/2015] [Indexed: 06/05/2023]
Abstract
Ultrafine and nanometric sediment inputs into river systems can be a major source of nutrients and hazardous elements and have a strong impact on water quality and ecosystem functions of rivers and lakes regions. However, little is known to date about the spatial distribution of sediment sources in most large scale river basins in South America. The objective of this work was to study the coal cleaning rejects (CCRs) spill that occurred from a CCRs impoundment pond into the Tubarão River, South Brazil, provided a unique occasion to study the importance and role of incidental nanoparticles associated with pollutant dispersal from a large-scale, acute aquatic pollution event. Multifaceted geochemical research by X-ray diffraction (XRD), High Resolution-Transmission Electron microscopy (HR-TEM)/(Energy Dispersive Spectroscopy) EDS/(selected-area diffraction pattern) SAED, Field Emission-Scanning Electron Microscopy (FE-SEM)/EDS, and Raman spectroscopy, provided an in-depth understanding of importance of a nano-mineralogy approach of Aqueous Pollution Scenarios. The electron beam studies showed the presence of a number of potentially hazardous elements (PHEs) in nanoparticles (amorphous and minerals). Some of the neoformed ultrafine/nanoparticles found in the contaminated sediments are the same as those commonly associated with oxidation/transformation of oxides, silicates, sulfides, and sulfates. These data of the secondary ultra/nanoparticles, puts in evidence their ability to control the mobility of PHEs, suggesting possible presentations in environmental technology, including recuperation of sensitive coal mine. The developed methodology facilitated the sediment transport of the catchment providing consistent results and suggesting its usefulness as a tool for temporary rivers management.
Collapse
Affiliation(s)
- Matheus S Civeira
- Laboratory of Environmental Researches and Nanotechnology Development, Centro Universitário La Salle, Mestrado em Avaliação de Impactos Ambientais em Mineração, Victor Barreto, 2288 Centro 92010-000 Canoas, RS, Brazil
| | - Claudete G Ramos
- Laboratory of Environmental Researches and Nanotechnology Development, Centro Universitário La Salle, Mestrado em Avaliação de Impactos Ambientais em Mineração, Victor Barreto, 2288 Centro 92010-000 Canoas, RS, Brazil
| | - Marcos L S Oliveira
- Laboratory of Environmental Researches and Nanotechnology Development, Centro Universitário La Salle, Mestrado em Avaliação de Impactos Ambientais em Mineração, Victor Barreto, 2288 Centro 92010-000 Canoas, RS, Brazil
| | - Rubens M Kautzmann
- Laboratory of Environmental Researches and Nanotechnology Development, Centro Universitário La Salle, Mestrado em Avaliação de Impactos Ambientais em Mineração, Victor Barreto, 2288 Centro 92010-000 Canoas, RS, Brazil
| | - Silvio R Taffarel
- Laboratory of Environmental Researches and Nanotechnology Development, Centro Universitário La Salle, Mestrado em Avaliação de Impactos Ambientais em Mineração, Victor Barreto, 2288 Centro 92010-000 Canoas, RS, Brazil
| | - Elba C Teixeira
- Fundação Estadual de Proteção Ambiental Henrique Luis Roessler, Porto Alegre, RS, Brazil
| | - Luis F O Silva
- Laboratory of Environmental Researches and Nanotechnology Development, Centro Universitário La Salle, Mestrado em Avaliação de Impactos Ambientais em Mineração, Victor Barreto, 2288 Centro 92010-000 Canoas, RS, Brazil.
| |
Collapse
|
28
|
Zhou M, Meng F. Using UV-vis absorbance spectral parameters to characterize the fouling propensity of humic substances during ultrafiltration. WATER RESEARCH 2015; 87:311-319. [PMID: 26433779 DOI: 10.1016/j.watres.2015.09.030] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 09/11/2015] [Accepted: 09/17/2015] [Indexed: 06/05/2023]
Abstract
Ultrafiltration (UF) can achieve excellent removal of natural organic matter (NOM), but the main challenge for this process is the limited understanding of membrane fouling. The objective of this study is to explore the potential of UV-vis spectroscopic analysis for the detection of membrane fouling caused by humic acids (HA) at different solution chemistries (i.e., calcium ions (Ca(2+)) and pH). In the presence of Ca(2+), several spectral parameters, including the DSlope(325-375) (the slope of the log-transformed absorbance spectra over 325-375 nm), S(275-295) (the slope of the absorption coefficient over 257-295 nm) and S(R) (the ratio of S(275-295) to S(350-400)) of various HA solutions, were correlated with the molecule aggregation and the membrane fouling potential. Interestingly, increased DSlope(325-375) and decreased S(275-295) and S(R) were observed for the HA-Ca(2+) interaction under alkaline conditions (i.e., pH = 9) relative to those in lower pH environments (i.e., pH = 7 or 6), suggesting that spectral parameters were able to predict HA-Ca(2+) interactions under varying pH conditions. The strong correlations between the spectral parameters and the unified membrane fouling index (UMFI) obtained from UF experiments further corroborated that the spectral parameters were able to predict the membrane fouling potential. Moreover, the spectral parameters were also found to well reveal the fouling extent of the mixture of HA and Suwannee River NOM (SRNOM) or the pure SRNOM added with varying calcium concentrations, implying that the spectroscopic analysis was also available for the indication of practical NOM fouling. In addition, the measurement of S(275-295) and S(R) of the permeate solution suggests an increasing proportion of small-molecule HA in the permeate during the UF process. This study not only expands our knowledge of NOM-Ca(2+) aggregates as well as their role in membrane fouling behavior but also provides an approach for the in situ characterization of membrane performance.
Collapse
Affiliation(s)
- Minghao Zhou
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology (Sun Yat-sen University), Guangzhou 510275, PR China
| | - Fangang Meng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology (Sun Yat-sen University), Guangzhou 510275, PR China.
| |
Collapse
|