AI Article Synopsis
Article Abstract
Technologies for removal of mercury from produced water and hydrocarbon phases are desired by oil and gas production facilities, oil refineries, and petrochemical plants. Herein, we synthesize and demonstrate the efficacy of an amphiphilic, thiol-abundant (11.8 wt % S, as thiol) polymer nanogel that can remove environmentally relevant mercury species from both produced water and the liquid hydrocarbon. The nanogel disperses in both aqueous and hydrocarbon phases. It has a high sorption affinity for dissolved Hg(II) complexes and Hg-dissolved organic matter complexes found in produced water and elemental (Hg) and soluble Hg-alkyl thiol species found in hydrocarbons. X-ray absorption spectroscopy analysis indicates that the sorbed mercury is transformed to a surface-bound Hg(SR) species in both water and hydrocarbon regardless of its initial speciation. The nanogel had high affinity to native mercury species present in real produced water (>99.5% removal) and in natural gas condensate (>85% removal) samples, removing majority of the mercury species using only a 50 mg L applied dose. This thiolated amphiphilic polymeric nanogel has significant potential to remove environmentally relevant mercury species from both water and hydrocarbon at low applied doses, outperforming reported sorbents like sulfur-impregnated activated carbons because of the mass of accessible thiol groups in the nanogel.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.est.0c05470 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Metal accumulation in fish species of a vast hydrographic network in the Moyen-Ogooué and Haut-Ogooué Provinces of Gabon: Implications for human health.
Toxicol Rep
December 2024
Department of Zootechnology, University of Science and Technology of Masuku, P.O Box 941, Franceville, Gabon.
With an obsolete livestock sector, Gabon relies on its huge hydrographic network rich in fish to supply its populations with animal proteins. This study aimed to conduct metal analyses in four fish species () frequently consumed by human populations in the Moyen-Ogooué and Haut-Ogooué Provinces of Gabon and infer the potential human health risks for those populations who rely on these freshwater produces as a source of proteins. Fish were sampled from Ezanga, Oguemoué, Onangué, Nguenè (Moyen-Ogooué) and Grand Poubara (Haut-Ogooué) Lakes during the high flow period (HF) and low flow period (LF) from 2021 to 2022, and analysed for seven heavy metals (HMs) using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) techniques.
View Article and Find Full Text PDFAssociation of Hepatic Gene Expression with Chemical Concentrations in Wild-Collected Double-Crested Cormorant Embryos using an EcoToxChip Gene Array.
Environ Sci Technol
December 2024
Environment and Climate Change Canada, Ecotoxicology and Wildlife Health Division, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada.
Contaminant monitoring programs use wild bird eggs, but determining whether measured concentrations elicit adverse effects relies on extrapolation from toxicity studies with avian model species. Here, we directly evaluated the relationships between whole embryo contaminant concentrations and mRNA expression in liver tissue of the double-crested cormorant (). Eggs collected from three North American sites (one from Lake Erie and two from the Salish Sea) were artificially incubated until pipping.
View Article and Find Full Text PDFMercury Levels in the Worldwide Farmed Fish: A Systematic Review.
Biol Trace Elem Res
December 2024
Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), University City, Rio de Janeiro, RJ, 21941-598, Brazil.
Aquaculture, specifically farmed fish, contributes to global aquatic fish stuff production. The present study systematically reviewed mercury levels in farmed fish. One hundred two scientific articles were found in four databases.
View Article and Find Full Text PDFA preliminary assessment of mercury, methylmercury and other potentially toxic elements in largemouth bass (Micropterus salmoides) from the Almadén mining district.
Environ Geochem Health
December 2024
Departamento de Explotación y Prospección Minera, Escuela de Ingeniería de Minas, Energía y Materiales, Universidad de Oviedo, Independencia, 13, 33004, Oviedo, Spain.
The food chain of the Valdezogues River system is at considerable risk due to the presence of mercury in the environment and to intense bioaccumulation and biomagnification processes in some fish species, particularly in piscivorous. Moreover, the presence of mercury in fish is a reliable indicator of the presence of its most toxic form, methylmercury. Of interest is that selenium, when present together with mercury in food, represents a significant decrease in the risks related to the ingestion of methylmercury.
View Article and Find Full Text PDFMicroplastics Aggravate the Adverse Effects of Methylmercury than Inorganic Mercury on Zebrafish (Danio rerio).
Environ Pollut
December 2024
Institute of Quality Standard and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, and Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Beijing 100081, China. Electronic address:
The potential health risks of microplastics (MPs) and their combined exposure with heavy metals such as mercury (Hg) in aquatic environment are increasingly concerned recently. In this work, zebrafish embryos were exposed to different levels of polystyrene microplastics (PS-MPs, ∼0.1 μm) coupled with Hg(II) or/and MeHg at 20 μg/L, to investigate the tissue biodistribution and accumulation of PS-MPs and Hg species, and their interaction, as well as embryo toxicity, oxidative stress and metabolic profiles.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!