Nitrogen gas is a staple of the chemical industry. Because it is an inert gas, nitrogen is suitable for a wide range of applications covering various aspects of chemical manufacturing, processing, handling, and shipping. Due to its low reactivity, nitrogen is an excellent blanketing and purging gas that can be used to protect valuable products from harmful contaminants. It also enables the safe...

Abstract Membrane distillation (MD) is a desalination technique that uses membrane to thermally separate potable water from sea or brackish water. The mass transport processes through the are commonly described by dusty gas model. These modeled assuming uniform, ideally cylindrical capillaries and adjusted for geometry including porosity tortuosity. tortuosity usually set 2 used as an adjusting...

The abundant resource of low-temperature heat sources (≈80–120 °C), e.g., low-concentration solar collectors or shallow geothermal wells, hold huge potential to be a renewable energy supply. A proposed method for harnessing such low-grade is use the distill solution and then utilize produced concentration difference generate work, by means salinity gradient power (SGP) technologies. In this app...

The improvement of a low concentration gas detection system based on the intracavity fiber laser is proposed in this paper. The sensitivity of the system is deduced based on Lambert-Beer law. The optimized system was established with the gas cell made elaborately. In order to apply the wavelength sweeping technique, the fiber Bragg grating reflector was substituted by the wavelength independent...

Rose water is one of the most important products obtained from Rosa genus (Rosaceae). Although Iran is one of the main producers of rose water, limited research has been done on it. A simple distillation and a Clevenger-type apparatus were used to obtain rose water and rose oil. All the volatile concentrates were investigated for their chemical composition by gas chromatography (GC) and gas chr...

Abstract Membrane distillation (MD) is a novel desalination technology that has potential to produce distilled quality water from high salinity brine streams. The driving force for MD the vapor pressure difference across hydrophobic membrane resulting in transfer of hot cold side. This contacts surface and condenses distillate. paper reviews recent and/or multi-year research programs focused on...

it is several decades that the application of membrane processes for gas separation has become a great concern within industries. among them, the polymeric membranes of different structures have played the most important role. such application has been widely extended to gas separation and due to the necessity of both; prediction of the behavior of these processes and recognition of the effecti...