To understand the interactions among eutrophication, algal bloom, and POPs (persistent organic pollutants) in freshwater ecosystems, cumulative selectivity of PAHs (polycyclic aromatic hydrocarbons) phytoplankton, water, sediment with different eutrophication level waters were identified a typical plain river network region located Nanjing City. Results showed that total 33 species belonging to...

This study determined the effect of surfactant Triton X-100 (1%) on biodegradation of various by polycyclic aromatic hydrocarbons (PAHs) by Pseudomonas sp. PSS6. Sprayed-plate experiments were performed to find the degrading capability of the test isolate. The test strain efficiently degraded PAHs to a greater extent compared to other isolates forming an intensive clear zone in Bushnell–Haas ag...

An efficient algorithm leading to the Fries canonical structure is presented for benzenoid hydrocarbons. This is a purely topological approach, which is based on adjacency matrices and the Hadamard procedure of matrix multiplication. The idea is presented for naphthalene, as an example. The Fries canonical-structures are also derived for anthracene, coronene, triphenylene, phenanthrene, benz[a]...

ABSTRACT. The aim of this investigation was to assess the presence 16 PAHs (naphthalene, acenaphthylene, acenaphthene, fluorene, anthracene, phenanthrene fluoranthene, benz[a]anthracene, pyrene, chrysene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, dibenzo[a,h]anthracene, benzo[ghi]perylene, and indeno[1,2,3-cd]pyrene with symbols Nap, Ace, Ane, Flu, Ant, Phe, Flt, BaA, Pyr, Chr...

Aromatic hydrocarbons present in Iraqi national surface water were believed to be raised principally from combustion of various petroleum products, industrial processes and transport output their precipitation on water.Polycyclic aromatic (PAHs) included the priority pollutant list due toxic carcinogenic nature. The concern about contamination consequent human exposure have encouraged developme...

In this study, nanoscale zero-valent iron nanoparticles (NZVIs) were coated with silica and polydopamine using a two-step process. The coated nanoparticles were applied as adsorbents for removal of two common polycyclic aromatic hydrocarbons pollutants, phenanthrene (PHE) and anthracene (ANT) from aqueous system. Adsorption kinetics followed a pseudo-second-order model. Isotherms and thermodyna...

The vapor pressures of ten polycyclic aromatic hydrocarbons, ranging in molecular weight from (152 to 252) g ·mol, were measured using the Knudsen effusion technique in the temperature range of (297 to 432) K. These compounds included those for which there were few or conflicting data in the literature: acenaphthylene, acenaphthene, fluoranthene, benzo[a]phenanthrene, 9,10-benzophenanthrene, be...

In this work, the formation of permeable reactive biobarriers (PRBBs) using Trichoderma longibrachiatum over nylon sponge as bioreactive medium for removal of polycyclic aromatic hydrocarbons (PAHs) was studied. Colony formation was pretested without PAH presence by inoculation of fungus into nylon sponge. The fungus formed a large quantity of strongly adhesive biofilm among nylon sponge. After...