Results 61 to 70 of about 43,860 (248)

APPLICATION OF FENTON’S REAGENT ON REMEDIATION OF POLYCYCLIC AROMATIC HYDROCARBONs (PAHs) IN SPIKED SOIL

open access: yesIndonesian Journal of Chemistry, 2010
Problem associated with Polycyclic Aromatic Hydrocarbons (PAHs) contaminated site in environmental media have received increasing attention. To resolve such problems, innovative in situ methods are urgently required.
Nursiah La Nafie
doaj   +1 more source

Polycyclic Aromatic Hydrocarbons in Corn Grains

open access: yesBulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Food Science and Technology, 2019
Contamination of crop plants with organic pollutants raises a growing interest in recent years; among the investigated pollutants, polycyclic aromatic hydrocarbons (PAHs) are of special concern because some of them are toxic and carcinogenic.
Edward MUNTEAN   +2 more
doaj   +1 more source

Granular Bed Filtration of Coal Pyrolysis Gas: Effects of Media Reactivity on Dust Removal and Products

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Granular bed filtration is a promising technology for removing dust from high‐temperature coal pyrolysis gas. In this work, the reactivity of coal pyrolysis products over ceramsite, char, ultrastable Y‐type (USY) zeolite, and quartz particles was compared.
Shuaiqiang Yang   +4 more
wiley   +1 more source

INSIGHT INTO THE RISKS OF MILK CONSUMPTION, POTENTIALLY CONTAMINATED WITH HEAVY METALS AND POLYCYCLIC AROMATIC HYDROCARBONS [PDF]

open access: yesScientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry
The study aimed to identify the health risks associated with consuming processed milk contaminated with heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs) for adults and children.
ANDREEA LAURA BANICA   +4 more
doaj   +1 more source

Potential contribution of biomass gasification‐based technology in energy transition: a technical review coupled with bibliometric studies

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Biomass gasification technology has been extensively researched around the world; however, there is a need to evaluate the current research landscape and evolutionary direction of research in the broader context of energy transition. A systematic bibliometric analysis of the Web of Science database was performed for articles that fall within ...
Olasunkanmi Opeoluwa Adeoye   +5 more
wiley   +1 more source

Small‐Crystal SAPO‐34 Preparation by Regulating Precursor Mixing Temperature for Methanol‐to‐Olefins Conversion

open access: yesCarbon and Hydrogen, EarlyView.
By tuning the initial mixing temperature from 0°C to 80°C, the crystal size of SAPO‐34 can be adjusted from micro to nanoscale, reflecting a shift from classical single‐crystal growth at low temperatures to non‐classical polycrystalline aggregation at high temperatures.
Guanghua Liang   +4 more
wiley   +1 more source

PAH Emission Spectra and Band Ratios for Arbitrary Radiation Fields with the Single Photon Approximation

open access: yesThe Astrophysical Journal
We present a new method for generating emission spectra from polycyclic aromatic hydrocarbons (PAHs) in arbitrary radiation fields. We utilize the single-photon limit for PAH heating and emission to treat individual photon absorptions as independent ...
Helena M. Richie, Brandon S. Hensley
doaj   +1 more source

Insights Into the Effect of Humic Acids Extraction From Coal on Hard Carbon Microstructure and Sodium Storage Properties

open access: yesCarbon Energy, EarlyView.
This study employs a simple solid‐phase alkali‐oxygen oxidation (SAO) method to extract inherent components (humic acids) from coal. We successfully extracted yellow, brown, and black humic acids by adjusting the amount of alkali. Among them, brown humic acid extraction created abundant ultra‐micropores and closed pores, greatly enhancing sodium ...
Ruizhen Song   +8 more
wiley   +1 more source

Interface‐Engineered Li–Ni–O/Ni Heterostructures With Tunable Vacancies on Biochar Enable Biomass‐to‐Hydrogen Conversion

open access: yesCarbon Energy, EarlyView.
This study shows that lithium induces Li–Ni–O/Ni heterostructures on biochar, creating oxygen vacancies and optimal acid–base environments that enhance steam activation and suppress carbon deposition. These interfacial effects and synergistic modulation lead to high hydrogen yields at moderate temperatures, providing a scalable catalyst design strategy
Jiali Guo   +7 more
wiley   +1 more source

One‐Shot Pd(II)‐Catalyzed Multiple C–H Activation Enables Modular Construction of Fluorenylidene Oxindole‐Based Multi(Polycyclic) Aromatic Enes

open access: yesChemistry – A European Journal, EarlyView.
A one‐shot Pd(II)‐catalyzed C─H activation strategy enables the rapid conversion of simple linear propiolamides into structurally diverse mono‐, di‐, and tri‐olefin‐bridged MPAEs. This cascade process orchestrates up to six sequential C–H activations in a single operation, providing streamlined access to highly conjugated architectures.
Haiyu Wang   +4 more
wiley   +1 more source

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