Purifying Crystallization of Naphthalene from Naphthalene-Benzoic Acid System

Purification of naphthalene from eutectic mixture by continuous column crystallization

−To obtain highly purified naphthalene, a column crystallizer was employed and operated in the continuous multistage countercurrent fractional mode. The principles and characteristics of the process are introduced. A large amount of experimental work has been done on the crystallization process in a D=50 mm×1,350 mm column. The effects of operation conditions including the composition of feed, ...

Naphthalene Poisoning

2-(Naphthalene-2-sulfonamido)-3-phenyl­propanoic acid

In the title compound, C(19)H(17)NO(4)S, the phenyl ring and the naphthalene ring system are oriented at a dihedral angle of 4.12 (2)° and the mol-ecule adopts a U-shaped conformation. The C(c)-C-N-S (c = carb-oxy) torsion angle is 90.98 (15)°. In the crystal, mol-ecules are linked by O-H⋯O and N-H⋯O hydrogen bonds, resulting in (100) chains incorporating centrosymmetric R(2) (2)(14) and R(2) (...

Evaluating the effects of Naphthalene acetic acid (NAA) on morpho-physiological traits of valerian (Valeriana officinalis L.) in aeroponic system.

Aeroponic culture is an alternative method for optimizing growth of different plants in controlled conditions. Aeroponic systems are an efficient tool for the root studies and improving medicinal root production. In order to study the feasibility of valerian (Valeriana officinalis L.) production in aeroponic systems and assessing the effects of different NAA concentrations (0, 0.1, 0.3, and 0.5...

Characterization of naphthalene-degrading bacteria isolated from the Persian Gulf and the Caspian Sea as potential agents for naphthalene removal from polluted environments

Over fifty bacterial strains were isolated from seawater samples in the presence of naphthalene as a sole source of carbon and energy. Among them, three isolates with higher growth rate and naphthalene degradation ability were selected for further studies. Biochemical and molecular analysis revealed that two Persian Gulf isolates, strain PG-10 and strain PG-48 belonged to the group of hydrocarb...