The aim of this research was to investigate the regeneration and reuse of a commercial granular iron sorbent (mainly goethite) when used in vanadium removal. A regeneration rate of 3 M NaOH was the highest (85%) achieved, followed by 2 M NaOH (79%) and 1 M NaOH (68%). The breakthrough curves show that the regenerated material can be reused. The BET (Brunauer–Emmett–Teller) surface area increased by 35–38% and the total pore volume increased by 123–130% as a consequence of NaOH treatment. The results indicated that sodium hydroxide could be used for the regeneration of iron sorbent although the regeneration was incomplete. This may be explained by the fact that vanadium diffusion into pores is a significant sorption mechanism in addition to complex formation with surface functional groups. As a consequence, vanadium desorbability from pores is not as effective as the regeneration of surface sites. X-ray photoelectron spectroscopy analyses confirmed a very low vanadium content on the surface of the NaOH-treated iron sorbent.
Golden Gate ATR wizard | Spectroscopy Guides
The Golden Gate ATR is an industry-leading FTIR spectrometer accessory. Click on the various buttons to explore the different ATR solutions provided for with the Golden Gate variations. Feel free to request pricing for a no-obligation estimate from one of our specialists. Golden Gate Standard: GS10500 The world`s most sensitive, robust and versatile infrared accessory, designed for all the latest high performance FTIR spectrometers. Powdered drugs/narcotics Agricultural/Food/Bio Polymers
Transformer oil FTIR testing | Spectroscopy Solutions
The United Kingdom is powered by a huge grid of pylons, conducting electricy across hundreds of miles. Thanks to this network of transmitters, we can switch on the lights, boil a kettle and visit the Specac website to read this article. Like any piece of equipment, pylons require maintenance. As high voltage electricy (up to 750,000 volts) surges through the pylons, transformers are used to contain the current and prevent dangerous power surges. From time-to-time, the insulation in these transformers is inevitably...
Analyze FAME in Diesel using FTIR | Spectroscopy Solutions
Biodiesel is a promising alternative to diesel produced from fossil fuels, however barriers still exist towards the creation of high efficiency biodiesel. The fatty acid methyl ester (FAME) content of biodiesels significantly affects their quality and performance. Fourier transform infrared (FTIR) spectroscopy using the Pearl™ liquid transmission unit from Specac provides a quick, easy, and accurate method of determining the FAME content of biodiesel. Biodiesel, made from cooking oil, animal fats and/or...
What do I need to start FTIR analysis? | Spectroscopy Guides
Specac has been a valued supplier of accessories of FTIR spectrometer accessories for over 45 years. Using this considerable experience, we have created a range of FTIR Starter Kits, based around our range of proven accessories. Each FTIR Starter Kit is the result of combining modular application packs to form a kit that meets the specific needs of the user – and is configured to include a wide range of essential accessories, offering everything a spectroscopist will need to analyze a wide range of...
Analyzing ionic liquids using ATR | Spectroscopy Solutions
Research into ionic liquid-based catalyst systems aim to improve the duty cycle, rate of metal loss and yield efficiency of large scale reactions using continuous flow reactors, such as those often used in the pharmaceutical industry. This article details the issues that are faced by the industry and a recent study that uses FTIR-ATR spectroscopy in the development of palladium poly(ionic liquid) catalyst membranes. What are ionic liquids? Ionic Liquids (IL) are generally defined as ionic compounds that are...