in this study, oxidation of dye from colored wastewater by H2O2/ Multiwall Carbon Nanotubes solution assisted with UV radiation was investigated. Disperse Blue 56 was used as a model dye. Adsorption behavior of Disperse Blue 56 from aqueous solution onto Multiwall Carbon Nanotubes was investigated under various conditions such as initial pH value, dye concentration, H2O2 and Multiwall Carbon Nanotubes content. Maximum adsorption capacity for Disperse Blue 56 at pH 7.0, 5.0 and 3.0 was found to be 0.53, 0.56 and 0.97 mmol/g, respectively. Isotherm results demonstrated that the linear correlation coefficients and standard deviations of Nernest and Freundlich isotherms were specified and that the Freundlich isotherm best fitted the experimental results. The adsorption kinetics was more precisely denoted by a pseudo second-order model revealed by regression grades. Furthermore, it was shown that the UV/H2O2/ Multiwall Carbon Nanotubes process could be used as eco-friendly method to degrade dyes from colored wastewater.

Background: Nasal tuberculosis (NTB) is rare, but it can be caused by either a pulmonary disease or a retrograde involvement of the nose by lupus vulgaris of the facial skin. In this study, we present a case of NTB with an ulcerative lesion in her left nasal cavity.Case presentation: A 56 years old woman presented with an ulcerative lesion in her left nasal cavity. The patient exhibited no clinical evidence of any systemic diseases. Peripheral leucocyte count (CBC) was normal but erythrocyte sedimentation rate was elevated. Mantoux' test elicited 25 mm reaction after 72 hr. Chest x-ray was normal. Pathological evaluation of the lesion revealed the caseating granulomas, epithelioid cells, lymphocytes, and a few giant cells. These findings suggested a diagnosis of tuberculosis. The patient was cured after 6 months treatment with standard regimen of tuberculosis.Conclusion: Although, nasal tuberculosis is rare, it should be considered in the differential diagnosis of patients with chronic nasal symptoms and ulcerative lesions of the nose.

The use of orange peel as low-cost and eco-friendly adsorbents has been investigated as an ideal alternative to the current expensive methods of removing dyes from wastewater. This paper concerns with the removal of Blue 56 from aqueous solutions by orange peel. The effects of pH, initial concentration, adsorbent dosage, and particle size of adsorbent, temperature and also isotherm data analysis and adsorption kinetics were investigated. A maximum removal of 96.76% was obtained at pH 2.5 for an adsorbent dose of 0.2 mg. Rate of adsorption was found to conform to pseudo-second-order kinetics with a good correlation (R2=0.99). The maximum adsorption capacity obtained from Langmuir equation was 9.69 (mgg-1).

The isothermal crystallization process, kinetics, melting behavior and equilibrium melting point of bio-based semi-aromatic high-temperature polyamide PA5T/56 were studied in detail by differential scanning calorimetry. The results showed that the crystallization properties of PA5T/56 are strongly dependent on temperature, with increases in isothermal crystallization temperature, the crystallization process becomes longer and the crystallization speed slows down. The isothermal crystallization process and kinetics were analyzed by Avrami equation, the Avrami index (n value) is between 1. 84 and 2. 41, it is speculated that the growth mode of the crystal is the coexistence of one-dimensional needle growth and two-dimensional sheet growth, which is confirmed by two-dimensional small angle X-ray scattering instrument and field emission scanning electron microscope. At the same time, according to Turnbull–, Fisher equation, it is reasonable to use Arvami equation to treat the isothermal crystallization process of PA5T/56. According to Hoffman–, Weeks theory, the equilibrium melting point of PA5T/56 raises with the increase in PA5T content. The isothermal crystallization activation energy of PA5T/56 was calculated by Arrhenius equation, and the kg value of PA5T/56 was calculated by Lauritzen–, Hoffman equation, both of them increase first and then decrease with the increase in PA5T content. Therefore, the study on the crystallization mechanism and crystal formation process of PA is of great significance for controlling the crystallinity of semi-crystalline polymers to obtain the required performance.