High-performance thin film composite forward osmosis membrane for efficient rejection of antimony and phenol from wastewater: Characterization, performance, and MD-DFT simulation

Journal of Membrane Science, Journal Year: 2024, Volume and Issue: 703, P. 122847 - 122847

Published: May 6, 2024

Language: Английский

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The composition and differences of antimony isotopic in sediments affected by the world's largest antimony deposit zone

Water Research, Journal Year: 2024, Volume and Issue: 254, P. 121427 - 121427

Published: March 5, 2024

Language: Английский

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Antimony Isotope Fractionation during Kinetic Sb(III) Oxidation by Antimony-Oxidizing Bacteria Pseudomonas sp. J1

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(26), P. 11411 - 11420

Published: June 18, 2024

Antimony (Sb) isotopic fractionation is frequently used as a proxy for biogeochemical processes in nature. However, to date, little known about Sb isotope biologically driven reactions. In this study,

Language: Английский

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Antimony isotopic fractionation during Sb(III) oxidation to Sb(V): Biotic and abiotic processes

Chemical Geology, Journal Year: 2023, Volume and Issue: 641, P. 121788 - 121788

Published: Oct. 16, 2023

Language: Английский

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Multi-isotope (Pb, Sb) approach to trace metallic contaminant sources at a historical mining and metallurgical site

Chemical Geology, Journal Year: 2024, Volume and Issue: 649, P. 121958 - 121958

Published: Jan. 26, 2024

Language: Английский

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Cadmium Isotope Fractionation during Adsorption onto Edge Sites and Vacancies in Phyllomanganate

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: July 18, 2024

Cadmium (Cd) geochemical behavior is strongly influenced by its adsorption onto natural phyllomanganates, which contain both layer edge sites and vacancies; however, Cd isotope fractionation mechanisms at these have not yet been addressed. In the present work, during hexagonal (containing types of sites) triclinic birnessite (almost only was investigated using a combination batch experiments, extended X-ray absorption fine structure (EXAFS) spectroscopy, surface complexation modeling, density functional theory (DFT) calculations. Light isotopes are preferentially enriched on solid surfaces, induced

Language: Английский

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Changes in antimony isotopic composition as a tracer of hydrothermal fluid evolution at the Sb deposits in Pezinok (Slovakia)

Mineralium Deposita, Journal Year: 2023, Volume and Issue: 59(3), P. 559 - 575

Published: Oct. 20, 2023

Abstract In this work, we investigated in situ isotopic compositions of antimony (Sb) minerals from two substages the ore deposits near Pezinok (Slovakia). The δ 123 Sb values primary range −0.4 and +0.8‰ increase progressively along precipitation sequence. substage II, early-formed gudmundite (FeSbS) shows all sections lowest values, followed by berthierite (FeSb 2 S 4 ), stibnite (Sb 3 valentinite O ) with heaviest values. A similar trend was observed for III, initially-formed stibnite, kermesite O), valentinite, senarmontite (both schafarzikite ). evolution can be rationalized a Rayleigh fractionation model starting value fluid +0.3‰, applying same mineral-fluid factor to minerals. Thus, texturally order mineralization is confirmed diminishing trace element contents heavier successively crystallized Antimony III likely supplied oxidative dissolution that formed earlier during II. data interpretation, although limited lack reliable factors, implies within each occurred an episodic metal precipitation, associated isotope between Large variations, induced as response temperature decrease, may obstacle deciphering source hydrothermal deposits. However, isotopes appear excellent instrument enhance our understanding on how systems operate.

Language: Английский

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Novel Isotopic Evidence Unveils Greater Contributions of Waste Incineration to PM_2.5‐Bound Antimony in Two Mega‐Cities

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(4)

Published: Feb. 19, 2025

Abstract PM 2.5 ‐bound antimony (Sb) may threaten human health and sustainable development, necessitating accurate source identification for its effective control. This study pioneered the application of Sb isotope signatures to trace sources, presenting first isotopic fingerprints in urban . We selected two mega‐cities with contrasting profiles: more developed Wuhan central less Guiyang southwest China. Urban both cities exhibited an ε 123 value 1.84 ± 0.79‱, a distinct seasonal pattern, that is, heavier isotopes spring/winter lighter summer/autumn. Isotopic apportionment revealed waste incineration as predominant anthropogenic cites at 34.0–39.1%, despite their massive economic industrial differences. Brake wear emerged second major source, especially Wuhan, where vehicle ownership is greater, accounting 21.2%. Complementary analyses using enrichment factor, elemental ratios, positive matrix factorization modeling, backward trajectory analysis corroborated findings. offers novel approach identify unveiling brake contributors from new perspective.

Language: Английский

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Application of Antimony Stable Isotopes in Revealing the Source and Vertical Migration of Sb in Soil

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Antimony (Sb) is a widespread contaminant that poses potential carcinogenic risks worldwide. Many countries are grappling with significant historical Sb-containing waste, leading to soil contamination, which of international concern. The lack clarity on Sb sources and migration mechanisms in limits the effective prevention control pollution. This study utilized stable isotope techniques analyze profiles from two pollution scenarios, aims quantifying sources, understanding processes, elucidating isotopic fractionation soil. results reveal surface originates primarily atmospheric dry deposition (31.7-56.3%), wet (19.6-32.7%), rock weathering (<21.0%). In subsurface soils, mainly comes solutions resulting desorption upper layers, adsorption by iron minerals, manganese (hydr-)oxides, organic matter impeding its downward movement. Deeper layers contain derived parent weathering, impacted secondary mineral adsorption. Groundwater aids influences during water-soil exchange. research introduces novel framework for quantitatively tracking enhances scientific geochemical behavior

Language: Английский

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Distinct mechanisms of stibnite (Sb2S3) oxidative dissolution mediated by acid-generating and alkali-generating microorganisms within a wide pH range

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 138141 - 138141

Published: April 1, 2025

Language: Английский

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