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1. Acid Rock Drainage Treatment Using Membrane Distillation: Impacts of Chemical-Free Pretreatment on Scale Formation, Pore Wetting, and Product Water Quality

Author:
Hull Eric J.; Zodrow Katherine R.
Source:
Environmental Science & Technology 2017 v.51 no.20 pp. 11928-11934
ISSN:
1520-5851
Subject:
distillation; drainage; electrolytes; geothermal energy; heat; heavy metals; hydrophobicity; iron oxyhydroxides; methodology; minerals; models; oxidation; pH; rivers; sulfates; temperature; vapors; wastewater; water quality; United States
Abstract:
... Acid rock drainage (ARD) is a metal-rich wastewater that forms upon oxidation of sulfidic minerals. Although ARD impacts >12,000 miles of rivers in the U.S. and has an estimated cleanup cost of $32–$72 billion, the low pH and high metal concentrations in ARD make rapid, high volume treatment without chemical addition difficult. This research focuses on a novel method of ARD treatment, membrane dis ...
DOI:
10.1021/acs.est.7b02957

2. Aggregation Kinetics and Self-Assembly Mechanisms of Graphene Quantum Dots in Aqueous Solutions: Cooperative Effects of pH and Electrolytes

Author:
Li Qingqing; Chen Baoliang; Xing Baoshan
Source:
Environmental Science & Technology 2017 v.51 no.3 pp. 1364-1376
ISSN:
1520-5851
Subject:
risk; image analysis; aqueous solutions; coagulation; calcium; cations; magnesium; quantum dots; scanning electron microscopy; pH; potassium; sodium; transmission electron microscopy; graphene; nanoparticles; environmental fate; prediction
Abstract:
... The cooperative effects of pH and electrolytes on the aggregation of GQDs and the aggregate morphologies are characterized. Because GQDs have an average size of 9 nm with abundant O-functionalized edges, their suspension was very stable even in a high electrolyte concentration and low pH solution. Divalent cations (Mg²⁺ and Ca²⁺) excelled at aggregating the GQD nanoplates, while monovalent cations ...
DOI:
10.1021/acs.est.6b04178
CHORUS:
10.1021/acs.est.6b04178
Chorus Open Access:
10.1021/acs.est.6b04178

3. Antibacterial Activity of Aluminum in Clay from the Colombian Amazon

Author:
Londono S. Carolina; Hartnett Hilairy E.; Williams Lynda B.
Source:
Environmental Science & Technology 2017 v.51 no.4 pp. 2401-2408
ISSN:
1520-5851
Subject:
Escherichia coli; aluminum; antibacterial properties; antibiotic resistance; antibiotics; bacteria; chemical analysis; clay; copper; humans; image analysis; iron; manganese; minimum inhibitory concentration; models; pH; pathogens; phospholipids; phosphorus; toxicity; zinc; Amazonia; Colombia
Abstract:
... The problems of antibiotic overuse compel us to seek alternative antibacterial agents. Some clays have been shown to kill antibiotic-resistant human pathogens and may provide an alternative to known antibiotics. Here we show that Al toxicity plays a central role in the antibacterial action of a kaolin-rich clay from the Colombian Amazon (AMZ). Antibacterial susceptibility testing shows minimum inh ...
DOI:
10.1021/acs.est.6b04670

4. Antimony and Arsenic Behavior during Fe(II)-Induced Transformation of Jarosite

Author:
Karimian Niloofar; Johnston Scott G.; Burton Edward D.
Source:
Environmental Science & Technology 2017 v.51 no.8 pp. 4259-4268
ISSN:
1520-5851
Subject:
X-ray absorption spectroscopy; acid mine drainage; acid sulfate soils; anaerobic conditions; antimony; arsenic; goethite; iron; jarosite; lepidocrocite; pH
Abstract:
... Jarosite can be an important scavenger for arsenic (As) and antimony (Sb) in acid mine drainage (AMD) and acid sulfate soil (ASS) environments. When subjected to reducing conditions, jarosite may undergo reductive dissolution, thereby releasing As, Sb, and Fe²⁺ coincident with a rise in pH. These conditions can also trigger the Fe²⁺-induced transformation of jarosite to more stable Fe(III) mineral ...
DOI:
10.1021/acs.est.6b05335

5. Chlorination Kinetics of 11-Nor-9-carboxy-Δ9-tetrahydrocannabinol: Effects of pH and Humic Acid

Author:
Mackie Allison L.; Park Yu Ri; Gagnon Graham A.
Source:
Environmental Science & Technology 2017 v.51 no.18 pp. 10711-10717
ISSN:
1520-5851
Subject:
Cannabis sativa; byproducts; chlorination; chlorine; flow injection analysis; half life; humic acids; ions; mass spectrometry; metabolites; pH; phenol; phosphates; rivers; surface water; tetrahydrocannabinol; wastes; wastewater treatment
Abstract:
... The main psychoactive compound in marijuana, Δ⁹-tetrahydrocannabinol (THC), and its metabolites are emerging organic contaminants that have been detected in waste and surface waters. As legalization of marijuana for medical and recreational use continues, the effects of increased use and potency of marijuana on water and wastewater treatment processes and the environment should be considered. This ...
DOI:
10.1021/acs.est.7b02234

6. Cobinding of Pharmaceutical Compounds at Mineral Surfaces: Mechanistic Modeling of Binding and Cobinding of Nalidixic Acid and Niflumic Acid at Goethite Surfaces

Author:
Xu Jing; Marsac Rémi; Wei Cheng; Wu Feng; Boily Jean-François; Hanna Khalil
Source:
Environmental Science & Technology 2017 v.51 no.20 pp. 11617-11624
ISSN:
1520-5851
Subject:
adsorption; drugs; environmental fate; goethite; hydrogen bonding; hydroxyl radicals; mechanistic models; nalidixic acid; pH; prediction; salinity; sodium; sodium chloride
Abstract:
... Although emerging contaminants rarely exist individually in environmental contaminated systems, only limited information on their adsorption mechanisms in multicomponent solutions is currently available. To address this shortcoming, this work examines for the first time the accuracy of a surface complexation model in predicting the cooperative adsorption of nalidixic acid (NA) and niflumic acid (N ...
DOI:
10.1021/acs.est.7b02900

7. Coupled Effect of Ferrous Ion and Oxygen on the Electron Selectivity of Zerovalent Iron for Selenate Sequestration

Author:
Qin Hejie; Li Jinxiang; Yang Hongyi; Pan Bingcai; Zhang Weiming; Guan Xiaohong
Source:
Environmental Science & Technology 2017 v.51 no.9 pp. 5090-5097
ISSN:
1520-5851
Subject:
selenates; aerobic conditions; aeration; lepidocrocite; iron; electron transfer; selenium; pH; magnetite; oxygen; adsorption
Abstract:
... Although the electron selectivity (ES) of zerovalent iron (ZVI) for target contaminant and its utilization ratio (UR) decide the removal capacity of ZVI, little effort has been made to improve them. Taking selenate [Se(VI)] as a target contaminant, this study investigated the coupled influence of aeration gas and Fe(II) on the ES and UR of ZVI. Oxygen was necessary for effective removal of Se(VI) ...
DOI:
10.1021/acs.est.6b04832

8. Effect of Hydration Forces on Protein Fouling of Ultrafiltration Membranes: The Role of Protein Charge, Hydrated Ion Species, and Membrane Hydrophilicity

Author:
Miao Rui; Wang Lei; Zhu Miao; Deng Dongxu; Li Songshan; Wang Jiaxuan; Liu Tingting; Lv Yongtao
Source:
Environmental Science & Technology 2017 v.51 no.1 pp. 167-174
ISSN:
1520-5851
Subject:
bovine serum albumin; fouling; hydrophilicity; hydrophobicity; ionic strength; ions; microfiltration; models; pH; ultrafiltration
Abstract:
... To investigate the influence of hydration forces on the protein fouling of membranes and the major influence factors of hydration forces during the ultrafiltration process, bovine serum albumin (BSA) was chosen as model foulant. For various pH levels and hydrated ion and membrane species, the membrane–BSA and BSA–BSA interaction forces, and fouling experiments with BSA, as a function of ionic stre ...
DOI:
10.1021/acs.est.6b03660

9. Efficient Formation of Light-Absorbing Polymeric Nanoparticles from the Reaction of Soluble Fe(III) with C4 and C6 Dicarboxylic Acids

Author:
Tran Ashley; Williams Geoffrey; Younus Shagufta; Ali Nujhat N.; Blair Sandra L.; Nizkorodov Sergey A.; Al-Abadleh Hind A.
Source:
Environmental Science & Technology 2017 v.51 no.17 pp. 9700-9708
ISSN:
1520-5851
Subject:
absorption; aerosols; benzene; biomass; burning; carbon; catalytic activity; color; elemental composition; environmental science; gases; ice nucleation; iron; maleic acid; nanoparticles; optical properties; pH; photooxidation; succinic acid
Abstract:
... The role of transition metals in the formation and aging of secondary organic aerosol (SOA) from aliphatic and aromatic precursors in heterogeneous/multiphase reactions is not well understood. The reactivity of soluble Fe(III) toward known benzene photooxidation products that include fumaric (trans-butenedioic) and muconic (trans,trans-2,4-hexadienedioic) acids was investigated. Efficient formatio ...
DOI:
10.1021/acs.est.7b01826

10. Efficient and Selective Uptake of TcO4– by a Cationic Metal–Organic Framework Material with Open Ag+ Sites

Author:
Sheng Daopeng; Zhu Lin; Xu Chao; Xiao Chengliang; Wang Yanlong; Wang Yaxing; Chen Lanhua; Diwu Juan; Chen Jing; Chai Zhifang; Albrecht-Schmitt Thomas E.; Wang Shuao
Source:
Environmental Science & Technology 2017 v.51 no.6 pp. 3471-3479
ISSN:
1520-5851
Subject:
X-ray diffraction; anion exchange; anions; aqueous solutions; cations; crystal structure; half life; hydrogen bonding; ligands; nitrates; nuclear fuels; pH; radiation resistance; radioactive waste; radionuclides; silver; sorbents; sorption; streams
Abstract:
... ⁹⁹Tc is one of the most problematic radioisotopes in used nuclear fuel owing to its combined features of high fission yield, long half-life, and high environmental mobility. There are only a handful of functional materials that can remove TcO₄– anion from aqueous solution and identifying for new, stable materials with high anion-exchange capacities, fast kinetics, and good selectivity remains a ch ...
DOI:
10.1021/acs.est.7b00339

11. Electrochemical Induced Calcium Phosphate Precipitation: Importance of Local pH

Author:
Lei Yang; Song Bingnan; van der Weijden Renata D.; Saakes Michel; Buisman Cees J. N.
Source:
Environmental Science & Technology 2017 v.51 no.19 pp. 11156-11164
ISSN:
1520-5851
Subject:
calcium; cathodes; crystallization; crystals; electrochemistry; hydroxyapatite; ions; pH; phosphorus; titanium; wastewater
Abstract:
... Phosphorus (P) is an essential nutrient for living organisms and cannot be replaced or substituted. In this paper, we present a simple yet efficient membrane free electrochemical system for P removal and recovery as calcium phosphate (CaP). This method relies on in situ formation of hydroxide ions by electro mediated water reduction at a titanium cathode surface. The in situ raised pH at the catho ...
DOI:
10.1021/acs.est.7b03909
PubMed:
28872838
PubMed Central:
PMC5628374

12. Environmental Conditions Influencing Sorption of Inorganic Anions to Multiwalled Carbon Nanotubes Studied by Column Chromatography

Author:
Metzelder Florian; Schmidt Torsten C.
Source:
Environmental Science & Technology 2017 v.51 no.9 pp. 4928-4935
ISSN:
1520-5851
Subject:
anions; carbon nanotubes; chromatography; deuterium oxide; electrostatic interactions; enthalpy; environmental factors; hydrogen bonding; iodides; ionic strength; nitrates; nitrites; pH; sodium chloride; sorbents; sorption; sorption isotherms; temperature
Abstract:
... Sorption to carbon-based nanomaterials is typically studied in batch experiments. An alternative method offering advantages to study sorption is column chromatography. Sorbent packed columns are used and sorption data are determined by relating sorbate retention to that of a nonretarded tracer. We have now for the first time applied this technique to study the influence of environmental conditions ...
DOI:
10.1021/acs.est.6b06386

13. Fe(II) Interactions with Smectites: Temporal Changes in Redox Reactivity and the Formation of Green Rust

Author:
Jones Adele M.; Murphy Cassandra A.; Waite T. David; Collins Richard N.
Source:
Environmental Science & Technology 2017 v.51 no.21 pp. 12573-12582
ISSN:
1520-5851
Subject:
X-ray absorption spectroscopy; environmental science; iron; models; montmorillonite; pH; smectite; temporal variation
Abstract:
... In this study, temporal changes in the redox properties of three 0.5 g/L smectite suspensions were investigateda montmorillonite (MAu-1) and two nontronites (NAu-1 and NAu-2) in the presence of 1 mM aqueous Fe(II) at pH 7.8. X-ray absorption spectroscopy revealed that the amount of Fe(II) added quantitatively transformed into chloride-green rust (Cl-GR) within 5 min and persisted over 18 days. Ov ...
DOI:
10.1021/acs.est.7b01793

14. Functional Characterization of a Novel Amidase Involved in Biotransformation of Triclocarban and its Dehalogenated Congeners in Ochrobactrum sp. TCC-2

Author:
Yun Hui; Liang Bin; Qiu Jiguo; Zhang Long; Zhao Youkang; Jiang Jiandong; Wang Aijie
Source:
Environmental Science & Technology 2017 v.51 no.1 pp. 291-300
ISSN:
1520-5851
Subject:
Ochrobactrum; amidase; amino acid sequences; anaerobic conditions; aniline; biodegradability; biodegradation; bioremediation; biotransformation; gene expression; genes; herbicides; hydrolysis; insecticides; pH; sediments; sequence analysis; temperature
Abstract:
... Haloaromatic antimicrobial triclocarban (3,4,4′-trichlorocarbanilide, TCC) is a refractory contaminant which is frequently detected in various aquatic and sediment environments globally. However, few TCC-degrading communities or pure cultures have been documented, and functional enzymes involved in TCC biodegradation hitherto have not yet been characterized. In this study, a bacterial strain, Ochr ...
DOI:
10.1021/acs.est.6b04885

15. Gadolinium Complex for the Catch and Release of Phosphate from Water

Author:
Harris Sarah M.; Nguyen Jamie T.; Pailloux Sylvie L.; Mansergh Jarrett P.; Dresel Mark J.; Swanholm Tran B.; Gao Tuo; Pierre Valérie C.
Source:
Environmental Science & Technology 2017 v.51 no.8 pp. 4549-4558
ISSN:
1520-5851
Subject:
anions; bicarbonates; bromates; bromides; chlorides; fluorides; gadolinium; ligands; metal ions; models; nitrates; nitrites; nitrogen dioxide; pH; phosphates; receptors; recycling; surface water
Abstract:
... The ability of complexes of hard and labile metal ions with one or more open coordination sites to capture phosphates with high affinity and selectivity directly in water at neutral pH and release them under acidic conditions is evaluated with Gadolinium- 2,2',2''-(((nitrilotris(ethane-2,1-diyl))tris(azanediyl))tris(carbonyl))tris(4-oxo-4H-pyran-3-olate) (Gd-TREN-MAM). This model lanthanide comple ...
DOI:
10.1021/acs.est.6b05815

16. Gas-Permeable Membrane-Based Conductivity Probe Capable of In Situ Real-Time Monitoring of Ammonia in Aquatic Environments

Author:
Li Tianling; Panther Jared; Qiu Yuan; Liu Chang; Huang Jianyin; Wu Yonghong; Wong Po Keung; An Taicheng; Zhang Shanqing; Zhao Huijun
Source:
Environmental Science & Technology 2017 v.51 no.22 pp. 13265-13273
ISSN:
1520-5851
Subject:
ammonia; ammonium; aquatic environment; aquatic organisms; boric acid; environmental science; monitoring; pH; temperature; toxicity
Abstract:
... Aquatic ammonia has toxic effects on aquatic life. This work reports a gas-permeable membrane-based conductivity probe (GPMCP) developed for real-time monitoring of ammonia in aquatic environments. The GPMCP innovatively combines a gas-permeable membrane with a boric acid receiving phase to selectively extract ammonia from samples and form ammonium at the inner membrane interface. The rate of the ...
DOI:
10.1021/acs.est.7b03552

17. Hematite Reduction Buffers Acid Generation and Enhances Nutrient Uptake by a Fermentative Iron Reducing Bacterium, Orenia metallireducens Strain Z6

Author:
Dong Yiran; Sanford Robert A.; Chang Yun-juan; McInerney Michael J.; Fouke Bruce W.
Source:
Environmental Science & Technology 2017 v.51 no.1 pp. 232-242
ISSN:
1520-5851
Subject:
Orenia; alkalinity; bacteria; buffering capacity; electron transfer; fermentation; glucose; hematite; iron; metabolomics; nutrient uptake; pH; remediation; thermodynamics; water management
Abstract:
... Fermentative iron-reducing organisms have been identified in a variety of environments. Instead of coupling iron reduction to respiration, they have been consistently observed to use ferric iron minerals as an electron sink for fermentation. In the present study, a fermentative iron reducer, Orenia metallireducens strain Z6, was shown to use iron reduction to enhance fermentation not only by consu ...
DOI:
10.1021/acs.est.6b04126

18. Hydroxylamine Promoted Goethite Surface Fenton Degradation of Organic Pollutants

Author:
Hou Xiaojing; Huang Xiaopeng; Jia Falong; Ai Zhihui; Zhao Jincai; Zhang Lizhi
Source:
Environmental Science & Technology 2017 v.51 no.9 pp. 5118-5126
ISSN:
1520-5851
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; alachlor; atrazine; carbon; chloramphenicol; gas chromatography-mass spectrometry; goethite; hydrogen peroxide; hydroxylamine; ion exchange chromatography; ions; iron; lincomycin; methyl orange; methylene blue; mineralization; pH; pentachlorophenol; pollutants
Abstract:
... In this study, we construct a surface Fenton system with hydroxylamine (NH₂OH), goethite (α-FeOOH), and H₂O₂ (α-FeOOH–HA/H₂O₂) to degrade various organic pollutants including dyes (methyl orange, methylene blue, and rhodamine B), pesticides (pentachlorophenol, alachlor, and atrazine), and antibiotics (tetracycline, chloramphenicol, and lincomycin) at pH 5.0. In this surface Fenton system, the pres ...
DOI:
10.1021/acs.est.6b05906

19. Impact of ISCO Treatment on PFAA Co-Contaminants at a Former Fire Training Area

Author:
Eberle Dylan; Ball Raymond; Boving Thomas B.
Source:
Environmental Science & Technology 2017 v.51 no.9 pp. 5127-5136
ISSN:
1520-5851
Subject:
acids; chlorides; groundwater; oxidants; oxidation; pH; remediation; soil; sorption; volatile organic compounds
Abstract:
... The effects of an in situ chemical oxidation (ISCO) treatment aimed predominantly at remediation of chlorinated volatile organic compounds (cVOCs) and perfluoroalkyl acids (PFAAs) co-contaminants were investigated. Soil and groundwater samples were collected before and after an ISCO pilot-scale field test of a peroxone activated persulfate (OxyZone) technology. Statistically significant decreases ...
DOI:
10.1021/acs.est.6b06591

20. Impact of Mn(II)-Manganese Oxide Reactions on Ni and Zn Speciation

Author:
Hinkle Margaret A. G.; Dye Katherine G.; Catalano Jeffrey G.
Source:
Environmental Science & Technology 2017 v.51 no.6 pp. 3187-3196
ISSN:
1520-5851
Subject:
X-ray absorption spectroscopy; active sites; adsorption; anaerobic conditions; birnessite; geometry; manganese; manganese oxides; nickel; pH; zinc
Abstract:
... Layered Mn oxide minerals (phyllomanganates) often control trace metal fate in natural systems. The strong uptake of metals such as Ni and Zn by phyllomanganates results from adsorption on or incorporation into vacancy sites. Mn(II) also binds to vacancies and subsequent comproportionation with structural Mn(IV) may alter sheet structures by forming larger and distorted Mn(III)O₆ octahedra. Such M ...
DOI:
10.1021/acs.est.6b04347

21. Inactivation of Ascaris Eggs in Human Fecal Material Through In Situ Production of Carboxylic Acids

Author:
Harroff Lauren A.; Liotta Janice L.; Bowman Dwight D.; Angenent Largus T.
Source:
Environmental Science & Technology 2017 v.51 no.17 pp. 9729-9738
ISSN:
1520-5851
Subject:
Ascaris; biological production; eggs; environmental impact; exposure duration; feces; fermentation; hexanoic acid; humans; pH; pathogens; sanitation; sludge; viability; waste treatment
Abstract:
... Discovering new ways to inactivate pathogens in human waste is critical for the improvement of worldwide access to sanitation and for the reduction of the environmental impact of conventional waste treatment processes. Here, we utilized the carboxylate platform and chain elongation to produce n-butyric acid and n-caproic acid via the anaerobic fermentation of human fecal material. Then, we inactiv ...
DOI:
10.1021/acs.est.7b02014

22. Intermittent Aeration Suppresses Nitrite-Oxidizing Bacteria in Membrane-Aerated Biofilms: A Model-Based Explanation

Author:
Ma Yunjie; Domingo-Félez Carlos; Plósz Benedek Gy.; Smets Barth F.
Source:
Environmental Science & Technology 2017 v.51 no.11 pp. 6146-6155
ISSN:
1520-5851
Subject:
aeration; ammonia; ammonium; biofilm; dissolved oxygen; energy efficiency; enzyme activity; models; nitrates; nitrification; nitrifying bacteria; nitrites; nitrogen-fixing bacteria; nitrous acid; oxidation; pH; wastewater
Abstract:
... Autotrophic ammonium oxidation in membrane-aerated biofilm reactors (MABRs) can make treatment of ammonium-rich wastewaters more energy-efficient, especially within the context of short-cut ammonium removal. The challenge is to exclusively enrich ammonium-oxidizing bacteria (AOB). To achieve nitritation, strategies to suppress nitrite-oxidizing bacteria (NOB) are needed, which are ideally grounded ...
DOI:
10.1021/acs.est.7b00463

23. Iron and Electron Shuttle Mediated (Bio)degradation of 2,4-Dinitroanisole (DNAN)

Author:
Niedźwiecka Jolanta B.; Drew Scott R.; Schlautman Mark A.; Millerick Kayleigh A.; Grubbs Erin; Tharayil Nishanth; Finneran Kevin T.
Source:
Environmental Science & Technology 2017 v.51 no.18 pp. 10729-10735
ISSN:
1520-5851
Subject:
Geobacter metallireducens; cell suspension culture; environmental science; explosives; groundwater; iron; microorganisms; pH
Abstract:
... The Department of Defense has developed explosives with the insensitive munition 2,4-dinitroanisole (DNAN), to prevent accidental detonations during training and operations. Understanding the fate and transport of DNAN is necessary to assess the risk it may represent to groundwater once the new ordnance is routinely produced and used. Experiments with ferrous iron or anthrahydroquinone-2,6-disulfo ...
DOI:
10.1021/acs.est.7b02433

24. Iron(II)-Catalyzed Iron Atom Exchange and Mineralogical Changes in Iron-rich Organic Freshwater Flocs: An Iron Isotope Tracer Study

Author:
ThomasArrigo Laurel K.; Mikutta Christian; Byrne James; Kappler Andreas; Kretzschmar Ruben
Source:
Environmental Science & Technology 2017 v.51 no.12 pp. 6897-6907
ISSN:
1520-5851
Subject:
X-ray absorption spectroscopy; X-ray diffraction; arsenic; ferrihydrite; freshwater; goethite; iron; isotopes; lepidocrocite; nanocrystals; organic matter; oxides; pH; temperature; wetlands
Abstract:
... In freshwater wetlands, organic flocs are often found enriched in trace metal(loid)s associated with poorly crystalline Fe(III)-(oxyhydr)oxides. Under reducing conditions, flocs may become exposed to aqueous Fe(II), triggering Fe(II)-catalyzed mineral transformations and trace metal(loid) release. In this study, pure ferrihydrite, a synthetic ferrihydrite-polygalacturonic acid coprecipitate (16.7 ...
DOI:
10.1021/acs.est.7b01495

25. Light Absorption by Brown Carbon in the Southeastern United States is pH-dependent

Author:
Phillips Sabrina M.; Bellcross Aleia D.; Smith Geoffrey D.
Source:
Environmental Science & Technology 2017 v.51 no.12 pp. 6782-6790
ISSN:
1520-5851
Subject:
absorption; aerosols; autumn; carbon; climate; humic substances; models; pH; particulates; phenol; radiative forcing; spring; wavelengths; wildfires; Georgia
Abstract:
... Light-absorbing organic material, or “brown carbon” (BrC), can significantly influence the effect that aerosols have on climate. Here, we investigate how changing pH affects the absorption spectra of water-soluble BrC from ambient particulate matter smaller than 2.5 μm collected in Athens, Georgia, in the spring and fall of 2016, including samples from nearby wildfires. We find that absorption inc ...
DOI:
10.1021/acs.est.7b01116

26. Magnesium Oxide Embedded Nitrogen Self-Doped Biochar Composites: Fast and High-Efficiency Adsorption of Heavy Metals in an Aqueous Solution

Author:
Ling Li-Li; Liu Wu-Jun; Zhang Shun; Jiang Hong
Source:
Environmental Science & Technology 2017 v.51 no.17 pp. 10081-10089
ISSN:
1520-5851
Subject:
engineering; tetracycline; organic matter; heavy metals; lead; biochar; aquatic ecosystems; aqueous solutions; cadmium; human health; pollution; surface water; metal ions; surface interactions; adsorbents; toxicity; drinking water; biomass; aquatic plants; adsorption; magnesium oxide; nitrogen; ion exchange; pH; pyrolysis; nanoparticles; wastewater
Abstract:
... Lead (Pb) pollution in natural water bodies is an environmental concern due to toxic effects on aquatic ecosystems and human health, while adsorption is an effective approach to remove Pb from the water. Surface interactions between adsorbents and adsorbates play a dominant role in the adsorption process, and properly engineering a material’s surface property is critical to the improvement of adso ...
DOI:
10.1021/acs.est.7b02382

27. Measurement and Surface Complexation Modeling of U(VI) Adsorption to Engineered Iron Oxide Nanoparticles

Author:
Pan Zezhen; Li Wenlu; Fortner John D.; Giammar Daniel E.
Source:
Environmental Science & Technology 2017 v.51 no.16 pp. 9219-9226
ISSN:
1520-5851
Subject:
adsorption; aqueous solutions; carbon; coatings; data collection; hydrochemistry; magnetic fields; magnetite; models; nanoparticles; oleic acid; pH; stearic acid; uranium; zeta potential
Abstract:
... Surface-functionalized magnetite nanoparticles have high capacity for U(VI) adsorption and can be easily separated from the aqueous phase by applying a magnetic field. A surface-engineered bilayer structure enables the stabilization of nanoparticles in aqueous solution. Functional groups in stearic acid (SA), oleic acid (OA), and octadecylphosphonic acid (ODP) coatings led to different adsorption ...
DOI:
10.1021/acs.est.7b01649

28. Mechanisms on the Impacts of Alkalinity, pH, and Chloride on Persulfate-Based Groundwater Remediation

Author:
Li Wei; Orozco Ruben; Camargos Natalia; Liu Haizhou
Source:
Environmental Science & Technology 2017 v.51 no.7 pp. 3948-3959
ISSN:
1520-5851
Subject:
aldehydes; alkalinity; aquifers; benzene; carbonates; chlorides; ferrihydrite; goethite; groundwater; hydroxyl radicals; hydroxylation; iron; kinetics; manganese; models; oxidation; pH; phenol; reaction kinetics; remediation; sulfates
Abstract:
... Persulfate (S₂O₈²–)-based in situ chemical oxidation (ISCO) has gained more attention in recent years due to the generation of highly reactive and selective sulfate radical (SO₄•–). This study examined the effects of important groundwater chemical parameters, i.e., alkalinity, pH, and chloride on benzene degradation via heterogeneous persulfate activation by three Fe(III)- and Mn(IV)-containing aq ...
DOI:
10.1021/acs.est.6b04849

29. Mimicking and Inhibiting Urea Hydrolysis in Nonwater Urinals

Author:
Saetta Daniella; Boyer Treavor H.
Source:
Environmental Science & Technology 2017 v.51 no.23 pp. 13850-13858
ISSN:
1520-5851
Subject:
acetic acid; environmental science; hydrolysis; magnesium ammonium phosphate; minerals; off odors; pH; pipes; urea; urease; urination; urine; water conservation
Abstract:
... Nonwater urinals are critical in the implementation of building-scale water conservation and urine diversion systems. However, because of the composition of urine and the prevalence of the urease enzyme that hydrolyzes urea, minerals readily precipitate in nonwater urinals and pipes. This leads to clogging, malodor, and possible replacement of nonwater urinals with flush urinals. Accordingly, the ...
DOI:
10.1021/acs.est.7b03571

30. Molecular Chemistry of Atmospheric Brown Carbon Inferred from a Nationwide Biomass Burning Event

Author:
Lin Peng; Bluvshtein Nir; Rudich Yinon; Nizkorodov Sergey A.; Laskin Julia; Laskin Alexander
Source:
Environmental Science & Technology 2017 v.51 no.20 pp. 11561-11570
ISSN:
1520-5851
Subject:
absorption; acidity; aerosols; biomass; burning; carbon; case studies; chemical composition; detectors; environmental science; high performance liquid chromatography; isomers; mass spectrometry; nitroaromatic compounds; nitrophenols; optical properties; pH; solvents; Israel
Abstract:
... Lag Ba’Omer, a nationwide bonfire festival in Israel, was chosen as a case study to investigate the influence of a major biomass burning event on the light absorption properties of atmospheric brown carbon (BrC). The chemical composition and optical properties of BrC chromophores were investigated using a high performance liquid chromatography (HPLC) platform coupled to photo diode array (PDA) and ...
DOI:
10.1021/acs.est.7b02276

31. Nanospecific Phytotoxicity of CuO Nanoparticles in Soils Disappeared When Bioavailability Factors Were Considered

Author:
Qiu Hao; Smolders Erik
Source:
Environmental Science & Technology 2017 v.51 no.20 pp. 11976-11985
ISSN:
1520-5851
Subject:
Hordeum vulgare; acetates; barley; bioavailability; cupric oxide; environmental science; models; nanoparticles; pH; phytotoxicity; prediction; root growth; seedlings; soil types; toxic substances; ultrafiltration
Abstract:
... Bioavailability-modifying factors such as soil type and aging have only rarely been considered in assessing toxicity of metal-containing nanoparticles in soil. Here, we examined the toxicity to barley (Hordeum vulgare) of CuO nanoparticles (CuO-NPs) relative to CuO bulk particles (CuO-BPs) and Cu acetate (Cu(OAc)₂) in six different soils with or without aging. The set up allows identifying whether ...
DOI:
10.1021/acs.est.7b01892

32. Novel Proximal Sensing for Monitoring Soil Organic C Stocks and Condition

Author:
Viscarra Rossel Raphael A.; Lobsey Craig R.; Sharman Chris; Flick Paul; McLachlan Gordon
Source:
Environmental Science & Technology 2017 v.51 no.10 pp. 5630-5641
ISSN:
1520-5851
Subject:
available water capacity; bulk density; cameras; carbon sinks; cation exchange capacity; clay; clay fraction; climate change; energy; environmental monitoring; gamma radiation; humus; image analysis; iron oxides; land degradation; landscapes; models; pH; soil organic carbon; soil profiles; soil quality; spectrometers; uncertainty; water content
Abstract:
... Soil information is needed for environmental monitoring to address current concerns over food, water and energy securities, land degradation, and climate change. We developed the Soil Condition ANalysis System (SCANS) to help address these needs. It integrates an automated soil core sensing system (CSS) with statistical analytics and modeling to characterize soil at fine depth resolutions and acro ...
DOI:
10.1021/acs.est.7b00889

33. Oxidation Removal of Nitric Oxide from Flue Gas Using UV Photolysis of Aqueous Hypochlorite

Author:
Liu Yangxian; Wang Yan; Liu Ziyang; Wang Qian
Source:
Environmental Science & Technology 2017 v.51 no.20 pp. 11950-11959
ISSN:
1520-5851
Subject:
absorption; calcium; carbon dioxide; environmental science; equations; flue gas; hydroxyl radicals; light intensity; mathematical models; nitric oxide; oxidation; oxygen; pH; photolysis; sodium hypochlorite; spraying; sulfur dioxide; temperature
Abstract:
... The oxidation removal of nitric oxide (NO) from flue gas using UV photolysis of aqueous hypochlorite (Ca(ClO)₂ and NaClO) in a photochemical spraying reactor was studied. The key parameters (e.g., light intensity, hypochlorite concentration, solution temperature, solution pH, and concentration of NO, SO₂, O₂, and CO₂), mechanism and kinetics of NO oxidation removal were investigated. The results d ...
DOI:
10.1021/acs.est.7b03628

34. Phosphate Changes Effect of Humic Acids on TiO2 Photocatalysis: From Inhibition to Mitigation of Electron–Hole Recombination

Author:
Long Mingce; Brame Jonathon; Qin Fan; Bao Jiming; Li Qilin; Alvarez Pedro J. J.
Source:
Environmental Science & Technology 2017 v.51 no.1 pp. 514-521
ISSN:
1520-5851
Subject:
Fourier transform infrared spectroscopy; adsorption; anions; cimetidine; electron transfer; humic acids; oxygen; pH; phosphates; photocatalysis; photooxidation; superoxide anion; titanium dioxide; water purification
Abstract:
... A major challenge for photocatalytic water purification with TiO₂ is the strong inhibitory effect of natural organic matter (NOM), which can scavenge photogenerated holes and radicals and occlude ROS generation sites upon adsorption. This study shows that phosphate counteracts the inhibitory effect of humic acids (HA) by decreasing HA adsorption and mitigating electron–hole recombination. As a mea ...
DOI:
10.1021/acs.est.6b04845

35. Phosphate-Imposed Constraints on Schwertmannite Stability under Reducing Conditions

Author:
Schoepfer ValerieA.; Burton Edward D.; Johnston Scott G.; Kraal Peter
Source:
Environmental Science & Technology 2017 v.51 no.17 pp. 9739-9746
ISSN:
1520-5851
Subject:
bioavailability; environmental science; goethite; groundwater; iron; pH; phosphates; sediments; sulfates; wetlands
Abstract:
... Schwertmannite is a ferric oxyhydroxysulfate mineral, which is common in acid sulfate systems. Such systems contain varying concentrations of phosphate (PO₄³–) an essential nutrient whose availability may be coupled to schwertmannite formation and fate. This study examines the effect of phosphate on schwertmannite stability under reducing conditions. Phosphate was added at 0, 80, 400, and 800 μmol ...
DOI:
10.1021/acs.est.7b02103

36. Plutonium Partitioning Behavior to Humic Acids from Widely Varying Soils Is Related to Carboxyl-Containing Organic Compounds

Author:
Lin Peng; Xu Chen; Zhang Saijin; Fujitake Nobuhide; Kaplan Daniel I.; Yeager Chris M.; Sugiyama Yuko; Schwehr Kathleen A.; Santschi Peter H.
Source:
Environmental Science & Technology 2017 v.51 no.20 pp. 11742-11751
ISSN:
1520-5851
Subject:
correlation; environmental science; groundwater; humic acids; nitrogen; nuclear magnetic resonance spectroscopy; pH; plutonium; soil types; stable isotopes
Abstract:
... In order to examine the influence of the HA molecular composition on the partitioning of Pu, ten different kinds of humic acids (HAs) of contrasting chemical composition, collected and extracted from different soil types around the world were equilibrated with groundwater at low Pu concentrations (10–¹⁴ M). Under mildly acidic conditions (pH ∼ 5.5), 29 ± 24% of the HAs were released as colloidal o ...
DOI:
10.1021/acs.est.7b03409

37. Predicting Organic Cation Sorption Coefficients: Accounting for Competition from Sorbed Inorganic Cations Using a Simple Probe Molecule

Author:
Jolin William C.; Goyetche Reaha; Carter Katherine; Medina John; Vasudevan Dharni; MacKay Allison A.
Source:
Environmental Science & Technology 2017 v.51 no.11 pp. 6193-6201
ISSN:
1520-5851
Subject:
amines; cation exchange capacity; cations; drugs; inorganic ions; models; montmorillonite; pH; prediction; soil minerals; sorption
Abstract:
... With the increasing number of emerging contaminants that are cationic at environmentally relevant pH values, there is a need for robust predictive models of organic cation sorption coefficients (Kd). Current predictive models fail to account for the differences in the identity, abundance, and affinity of surface-associated inorganic exchange ions naturally present at negatively charged receptor si ...
DOI:
10.1021/acs.est.7b01277

38. Prediction of Hydrolysis Products of Organic Chemicals under Environmental pH Conditions

Author:
Tebes-Stevens Caroline; Patel Jay M.; Jones W. Jack; Weber Eric J.
Source:
Environmental Science & Technology 2017 v.51 no.9 pp. 5008-5016
ISSN:
1520-5851
Subject:
chemical structure; computer software; data collection; half life; hydrolysis; organic compounds; pH; pesticides; prediction; trade
Abstract:
... Cheminformatics-based software tools can predict the molecular structure of transformation products using a library of transformation reaction schemes. This paper presents the development of such a library for abiotic hydrolysis of organic chemicals under environmentally relevant conditions. The hydrolysis reaction schemes in the library encode the process science gathered from peer-reviewed liter ...
DOI:
10.1021/acs.est.6b05412
PubMed:
28430419
PubMed Central:
PMC6776422

39. Radical Chemistry and Structural Relationships of PPCP Degradation by UV/Chlorine Treatment in Simulated Drinking Water

Author:
Guo Kaiheng; Wu Zihao; Shang Chii; Yao Bo; Hou Shaodong; Yang Xin; Song Weihua; Fang Jingyun
Source:
Environmental Science & Technology 2017 v.51 no.18 pp. 10431-10439
ISSN:
1520-5851
Subject:
alkalinity; alkenes; benzene derivatives; caffeine; chlorine; drinking water; gemfibrozil; organic matter; oxidation; pH; personal care products; phenols; pollutants
Abstract:
... The UV/chlorine process is an emerging advanced oxidation process (AOP) used for the degradation of micropollutants. However, the radical chemistry of this AOP is largely unknown for the degradation of numerous structurally diverse micropollutants in water matrices of varying quality. These issues were addressed by grouping 34 pharmaceuticals and personal care products (PPCPs) according to the rad ...
DOI:
10.1021/acs.est.7b02059

40. Rates of Cr(VI) Generation from CrxFe1–x(OH)3 Solids upon Reaction with Manganese Oxide

Author:
Pan Chao; Liu Huan; Catalano Jeffrey G.; Qian Ao; Wang Zimeng; Giammar Daniel E.
Source:
Environmental Science & Technology 2017 v.51 no.21 pp. 12416-12423
ISSN:
1520-5851
Subject:
adsorption; anions; aqueous solutions; cations; chromium; environmental science; groundwater; iron; iron oxides; manganese; manganese dioxide; mixing; oxidants; oxidation; pH; sediments; soil; solubility
Abstract:
... The reaction of manganese oxides with Cr(III)-bearing solids in soils and sediments can lead to the natural production of Cr(VI) in groundwater. Building on previous knowledge of MnO₂ as an oxidant for Cr(III)-containing solids, this study systematically evaluated the rates and mechanisms of the oxidation of Cr(III) in iron oxides by δ-MnO₂. The Fe/Cr ratio (x = 0.055–0.23 in CrₓFe₁–ₓ(OH)₃) and pH ...
DOI:
10.1021/acs.est.7b04097

41. Reaction Pathways and Kinetics of a Cyanobacterial Neurotoxin β-N-Methylamino-L-Alanine (BMAA) during Chlorination

Author:
Chen Yi-Ting; Chen Wan-Ru; Liu Zhi-Quan; Lin Tsair-Fuh
Source:
Environmental Science & Technology 2017 v.51 no.3 pp. 1303-1311
ISSN:
1520-5851
Subject:
Alzheimer disease; chlorination; chlorine; chromatography; disinfectants; drinking water; neurotoxins; oxidants; pH; reducing agents; spectrometers
Abstract:
... β-N-Methylamino-L-alanine (BMAA), a probable cause of the amyotrophic lateral sclerosis/parkinsonism–dementia complex (ALS/PDC), or Alzheimer’s disease, has been identified in more than 20 cyanobacterial genera. However, its removal and fate in drinking water has never been reported before. In this study, the reaction of BMAA with chlorine, a common drinking-water oxidant/disinfectant, was investi ...
DOI:
10.1021/acs.est.6b03553

42. Sequential Combination of Electro-Fenton and Electrochemical Chlorination Processes for the Treatment of Anaerobically-Digested Food Wastewater

Author:
Shin Yong-Uk; Yoo Ha-Young; Kim Seonghun; Chung Kyung-Mi; Park Yong-Gyun; Hwang Kwang-Hyun; Hong Seok Won; Park Hyunwoong; Cho Kangwoo; Lee Jaesang
Source:
Environmental Science & Technology 2017 v.51 no.18 pp. 10700-10710
ISSN:
1520-5851
Subject:
ammonium; ammonium nitrogen; anodes; carbon; chlorination; chlorine; electrochemistry; energy; hydrogen peroxide; hydroxyl radicals; mineralization; models; monitoring; nitrates; nitrogen; oxidants; oxidation; pH; phenol; sodium chloride; wastewater
Abstract:
... A two-stage sequential electro-Fenton (E-Fenton) oxidation followed by electrochemical chlorination (EC) was demonstrated to concomitantly treat high concentrations of organic carbon and ammonium nitrogen (NH₄⁺–N) in real anaerobically digested food wastewater (ADFW). The anodic Fenton process caused the rapid mineralization of phenol as a model substrate through the production of hydroxyl radical ...
DOI:
10.1021/acs.est.7b02018

43. Sieved Transport and Redistribution of Bioavailable Phosphorus from Watershed with Complex River Networks to Lake

Author:
Yi Qitao; Chen Qiuwen; Shi Wenqing; Lin Yuqing; Hu Liuming
Source:
Environmental Science & Technology 2017 v.51 no.18 pp. 10379-10386
ISSN:
1520-5851
Subject:
algal blooms; basins; fractionation; hydrodynamics; hydroxides; hypoxia; lakes; macrophytes; pH; phosphorus; rivers; sediments; sorption; urban areas; watersheds; China
Abstract:
... An innovative approach was developed to reveal phosphorus (P) transport and redistribution in large and complex river networks in the Lake Taihu basin by establishing the relations between sediment P spatial distribution and P sorption behavior on particles with different grain size, sorted by hydrodynamics. The sediment P fractionation composition changed greatly across the basin, where 69% consi ...
DOI:
10.1021/acs.est.7b02710

44. Simultaneous Oxidation and Sequestration of As(III) from Water by Using Redox Polymer-Based Fe(III) Oxide Nanocomposite

Author:
Zhang Xiaolin; Wu Mengfei; Dong Hao; Li Hongchao; Pan Bingcai
Source:
Environmental Science & Technology 2017 v.51 no.11 pp. 6326-6334
ISSN:
1520-5851
Subject:
adsorption; arsenic; bicarbonates; chemical bonding; chlorides; chlorine; decontamination; drinking water; effluents; ferric oxide; groundwater; humic acids; iron; nanocomposites; nanoparticles; oxidation; pH; polystyrenes; silicates; sodium hypochlorite; sulfates
Abstract:
... Water decontamination from As(III) is an urgent but still challenging task. Herein, we fabricated a bifunctional nanocomposite HFO@PS-Cl for highly efficient removal of As(III), with active chlorine covalently binding spherical polystyrene host for in situ oxidation of As(III) to As(V), and Fe(III) hydroxide (HFO) nanoparticles (NPs) embedded inside for specific As(V) removal. HFO@PS-Cl could work ...
DOI:
10.1021/acs.est.7b00724

45. Spectrophotometric Determination of Carbonate Ion Concentrations: Elimination of Instrument-Dependent Offsets and Calculation of In Situ Saturation States

Author:
Sharp Jonathan D.; Byrne Robert H.; Liu Xuewu; Feely Richard A.; Cuyler Erin E.; Wanninkhof Rik; Alin Simone R.
Source:
Environmental Science & Technology 2017 v.51 no.16 pp. 9127-9136
ISSN:
1520-5851
Subject:
absorbance; algorithms; calcium carbonate; carbon; data collection; models; pH; quality control; seawater; spectrophotometers; statistical analysis
Abstract:
... This work describes an improved algorithm for spectrophotometric determinations of seawater carbonate ion concentrations ([CO₃²–]ₛₚₑc) derived from observations of ultraviolet absorbance spectra in lead-enriched seawater. Quality-control assessments of [CO₃²–]ₛₚₑc data obtained on two NOAA research cruises (2012 and 2016) revealed a substantial intercruise difference in average Δ[CO₃²–] (the diffe ...
DOI:
10.1021/acs.est.7b02266

46. Tc(VII) and Cr(VI) Interaction with Naturally Reduced Ferruginous Smectite from a Redox Transition Zone

Author:
Qafoku Odeta; Pearce Carolyn I.; Neumann Anke; Kovarik Libor; Zhu Mengqiang; Ilton Eugene S.; Bowden Mark E.; Resch Charles T.; Arey Bruce W.; Arenholz Elke; Felmy Andrew R.; Rosso Kevin M.
Source:
Environmental Science & Technology 2017 v.51 no.16 pp. 9042-9052
ISSN:
1520-5851
Subject:
X-ray absorption spectroscopy; chromium; clay; iron; models; montmorillonite; pH; reaction kinetics; smectite; Washington (state)
Abstract:
... Fe(II)-rich clay minerals found in subsurface redox transition zones (RTZs) can serve as important sources of electron equivalents limiting the transport of redox-active contaminants. While most laboratory reactivity studies are based on reduced model clays, the reactivity of naturally reduced field samples remains poorly explored. Characterization of the clay size fraction of a fine-grained unit ...
DOI:
10.1021/acs.est.7b02191

47. The Formation of Silicate-Stabilized Passivating Layers on Pyrite for Reduced Acid Rock Drainage

Author:
Fan Rong; Short Michael D.; Zeng Sheng-Jia; Qian Gujie; Li Jun; Schumann Russell C.; Kawashima Nobuyuki; Smart Roger St. C.; Gerson Andrea R.
Source:
Environmental Science & Technology 2017 v.51 no.19 pp. 11317-11325
ISSN:
1520-5851
Subject:
drainage; environmental science; ferrihydrite; goethite; iron; iron oxyhydroxides; lepidocrocite; limestone; mining; neutralization; pH; phase transition; pyrite; silicate minerals; silicates; thermodynamics
Abstract:
... Acid and metalliferous release occurring when sulfide (principally pyrite)-containing rock from mining activities and from natural environments is exposed to the elements is acknowledged as a major environmental problem. Acid rock drainage (ARD) management is both challenging and costly for operating and legacy mine sites. Current technological solutions are expensive and focused on treating ARD o ...
DOI:
10.1021/acs.est.7b03232

48. Transformation among Aromatic Iodinated Disinfection Byproducts in the Presence of Monochloramine: From Monoiodophenol to Triiodophenol and Diiodonitrophenol

Author:
Gong Tingting; Tao Yuxian; Zhang Xiangru; Hu Shaoyang; Yin Jinbao; Xian Qiming; Ma Jian; Xu Bin
Source:
Environmental Science & Technology 2017 v.51 no.18 pp. 10562-10571
ISSN:
1520-5851
Subject:
byproducts; chlorine; cytotoxicity; disinfection; environmental science; iodine; nitrites; pH; temperature
Abstract:
... Aromatic iodinated disinfection byproducts (DBPs) are a newly identified category of highly toxic DBPs. Among the identified aromatic iodinated DBPs, 2,4,6-triiodophenol and 2,6-diiodo-4-nitrophenol have shown relatively widespread occurrence and high toxicity. In this study, we found that 4-iodophenol underwent transformation to form 2,4,6-triiodophenol and 2,6-diiodo-4-nitrophenol in the presenc ...
DOI:
10.1021/acs.est.7b03323

49. Transformation of Iodide by Carbon Nanotube Activated Peroxydisulfate and Formation of Iodoorganic Compounds in the Presence of Natural Organic Matter

Author:
Guan Chaoting; Jiang Jin; Luo Congwei; Pang Suyan; Jiang Chengchun; Ma Jun; Jin Yixin; Li Juan
Source:
Environmental Science & Technology 2017 v.51 no.1 pp. 479-487
ISSN:
1520-5851
Subject:
carbon nanotubes; electron transfer; humic acids; iodates; iodides; iodoacetic acid; kinetics; oxidation; pH; risk; sulfates; toxicity; water treatment
Abstract:
... In this study, we interestingly found that peroxydisulfate (PDS) could be activated by a commercial multiwalled carbon nanotube (CNT) material via a nonradical pathway. Iodide (I–) was quickly and almost completely oxidized to hypoiodous acid (HOI) in the PDS/CNT system over the pH range of 5–9, but the further transformation to iodate (IO₃–) was negligible. A kinetic model was proposed, which inv ...
DOI:
10.1021/acs.est.6b04158

50. Uptake and Metabolism of Human Pharmaceuticals by Fish: A Case Study with the Opioid Analgesic Tramadol

Author:
Tanoue Rumi; Margiotta-Casaluci Luigi; Huerta Belinda; Runnalls Tamsin J.; Nomiyama Kei; Kunisue Tatsuya; Tanabe Shinsuke; Sumpter John P.
Source:
Environmental Science & Technology 2017 v.51 no.21 pp. 12825-12835
ISSN:
1520-5851
Subject:
analgesics; blood; brain; case studies; environmental science; humans; hydrophobicity; metabolites; pH; pharmacokinetics; prediction; toxicology; wild fish
Abstract:
... Recent species-extrapolation approaches to the prediction of the potential effects of pharmaceuticals present in the environment on wild fish are based on the assumption that pharmacokinetics and metabolism in humans and fish are comparable. To test this hypothesis, we exposed fathead minnows to the opiate pro-drug tramadol and examined uptake from the water into the blood and brain and the metabo ...
DOI:
10.1021/acs.est.7b03441