Efficient adsorption of a mixture of polycyclic aromatic hydrocarbons (PAHs) by Si–MCM–41 mesoporous molecular sieve

2017 ◽  
Vol 308 ◽  
pp. 434-441 ◽  
Author(s):  
José Arnaldo Santana Costa ◽  
Roberta Anjos de Jesus ◽  
Caio Marcio Paranhos da Silva ◽  
Luciane Pimenta Cruz Romão
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Molecular Sieve ◽  
Mesoporous Molecular Sieve ◽  
Polycyclic Aromatic ◽  
Mcm 41

Analysis of polycyclic aromatic hydrocarbons using porous material MCM-41 as a sorbent

2013 ◽  
Vol 5 (23) ◽  
pp. 6874 ◽  
Author(s):  
Chang-Feng Ou-Yang ◽  
Jin-Yu Liu ◽  
Hsien-Ming Kao ◽  
Jei-Hung Wang ◽  
Shi-Ping Liu ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Porous Material ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic ◽  
Mcm 41

Polycyclic aromatic hydrocarbons removal from aqueous solution with PABA-MCM-41/polyethersulfone mixed matrix membranes

2021 ◽  
Author(s):  
José Arnaldo S. Costa ◽  
Victor H. V. Sarmento ◽  
Luciane P. C. Romão ◽  
Caio M. Paranhos
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Fossil Fuels ◽  
Rice Husk Ash ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Adsorption Processes ◽  
Polycyclic Aromatic ◽  
Mcm 41

Abstract Polycyclic aromatic hydrocarbons (PAHs) are one of the most recalcitrant pollutant originated from the burning of coal, petroleum, and other fossil fuels. The human exposure to PAHs may contribute to develop several carcinogenesis mechanisms. The aim of the present study was to develop a mixed matrix membrane (MMM) based on polyethersulfone (PES) and functionalized mesoporous material for the remediation of PAHs mixture by adsorption processes. MCM-41-based mesoparticles were obtained from biomass reuse of rice husk ash (RHA) and functionalized with p-aminobenzoic acid (PABA). The hydrothermal and casting methods were effective and sustainable in the preparation of PABA-MCM-41 and PES-based MMMs, respectively. PES-based MMMs presented an excellent distribution of the arrays incorporated and small-angle ordering. The absorption of PAHs was influenced by the incorporation of PABA-MCM-41 within the PES matrix.

The Assessment of Contamination and Source of Polycyclic Aromatic Hydrocarbons from the Sediments of the Someş River

2019 ◽  
Vol 64 (1) ◽  
pp. 55-67
Author(s):  
Vlad Pӑnescu ◽  
◽  
Mihaela Cӑtӑlina Herghelegiu ◽  
Sorin Pop ◽  
Mircea Anton ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic

1,1’-Biaceanthrylene and 2,2'-Biaceanthrylene: Models for Linking Larger Polycyclic Aromatic Hydrocarbons via Five-Membered Rings

2019 ◽  
Author(s):  
Yachu Du ◽  
Kyle Plunkett
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Electronic Properties ◽  
Aromatic Hydrocarbons ◽  
Model Systems ◽  
Redox Potentials ◽  
Dimer Model ◽  
Optical And Electronic Properties ◽  
Polycyclic Aromatic

We show that polycyclic aromatic hydrocarbon (PAH) chromophores that are linked between two five-membered rings can access planarized structures with reduced optical gaps and redox potentials. Two aceanthrylene chromophores were connected into dimer model systems with the chromophores either projected outward (2,2’-biaceanthrylene) or inward (1,1’-biaceanthrylene) and the optical and electronic properties were compared. Only the planar 2,2’-biaceanthrylene system showed significant reductions of the optical gaps (1 eV) and redox potentials in relation to the aceanthrylene monomer.<br>

Sign in / Sign up

Export Citation Format

Share Document