Basic Dye Adsorption onto Clay/MnFe2O4 Composite: A Mechanistic Study.

Native, HCl pretreated clay and MnFe2O4/clay composite were investigated as an adsorbent for crystal violet (CV) removal. The adsorption behavior of dye was studied in batch experiments as a function of contact time, adsorbent dose, pH, dye initial concentration and temperature. The medium pH 8, contact time 30 min, MnFe2O4/clay composite dose 0.05 mg/L, temperature 35 °C and 100 mg/L dye initial concentration furnished maximum CV adsorption. Adsorption data fitted well to the Langmuir isotherm model and maximum CV dye adsorption capacity of composite was 49.74 mg/g. The thermodynamic parameters revealed that the adsorption process of CV was exothermic and spontaneous in nature. CV adsorption followed the pseudo second order kinetic model. MnFe2O4/clay composite exhibited good CV adsorption capacity and can be used as an alternative adsorbent for the removal of basic dyes from effluents.

A case of accidental displacement of a central venous catheter in lung parenchyma leading to hydrothorax: A case report.

INTRODUCTION: Effective critical care requires the placement of a central venous catheter (CVC), which is frequently indicated for volume resuscitation, hemodynamic assessment, and the administration of vasopressors, blood products, and parenteral nourishment. However, central venous catheterization is not without its complications. The majority of these problems are avoidable and treatable with proper patient selection, cautious insertion technique, and attention after catheter insertion. CASE: We present a case of a 34-year-old male patient who developed unilateral hydrothorax as a result of a central venous catheter malposition in the lung parenchyma. The condition was resolved since the complication was identified and treated quickly. CONCLUSION: Previous studies have revealed a few unusual incidences of catheter misplacement. This case report can be serviceable to the medical community as they should be aware of this unique presentation, it's management and outcome.