Spent grain, the low-cost and abundant biomass produced in the brewing industry, was functionalized with thiol groups to be used as an adsorbent for Hg(II) removal from acidic aqueous solution. The adsorbents were characterized by the energy-dispersive X-ray analysis (EDAX) and Fourier transform infrared (FTIR) spectroscopy. Optimum pH for Hg(II) adsorption onto the thiol-functionalized spent grain (TFSG) was 2.0. The equilibrium and kinetics of the adsorption of Hg(II) onto TFSG from acidic aqueous solution were investigated. From the Langmuir isotherm model the maximum adsorption capacity of TFSG for Hg(II) was found to be 221.73 mg g-1, which was higher than that of most various adsorbents reported in literature. Moreover, the adsorption of Hg(II) onto TFSG followed pseudo-second-order kinetic model.
Using FTIR spectroscopy to measure hydrocarbon pollution in water
According to the World Health Organization (WHO) and UNICEF’s 2015 Progress on Sanitation and Drinking Water report almost 700 million people around the world don’t have access to clean drinking water . Poor water quality is beginning to return to the developed world too. The strain of population growth, intensified agricultural practices and continued industrial expansion have are all contributing to rising contamination levels in water supplies. Chlorinated Aromatic Hydrocarbons (CHCs) Pollute...
White Paper & Video on FTIR multigas analysis
Gasmet Technologies has published a free White Paper and a video on the simultaneous measurement of multiple gases in a wide variety of applications using FTIR. Both the video and the White Paper can be foundhere at www.gasmet.comor by visiting the Quantitech stand 62/63 at AQE 2017. With the ability to measure almost any gas, FTIR technology is employed in an enormous variety of applications including Continuous Emissions Monitoring, Stack Testing, Process Control, Industrial Hygiene, Engine Emissions, Semiconduc...
Toxic gas analysis - new video, white paper and case study
Dangerous levels of toxic gases in freight containers represent a major threat to port and transport workers, customs officials, warehousemen, store employees and consumers. However, the risks posed by these gases can be effectively assessed with Gasmet FTIR multigas analysers. Gasmet has therefore published a video, a white paper and a case study; providing comprehensive help and advice for any employers that need to assess such risks in order to protect the health and welfare of staff and customers. The air...
Analyzer underpins growth of container inspection company
After a career as a customs officer in the Netherlands, Wim van Tienen was well aware of the toxic gas hazards presented by some freight containers, so in 2009 he started a company, Van Tienen Milieuadvies B.V., offering gas analysis and safety advice. The company grew quickly and now employs 23 staff. Wim attributes a large part of this success to the advanced FTIR gas detection and analysis technology upon which the company’s services depend. Background It has been estimated that there are more than 17...
New White Paper on FTIR multigas analysis
Quantitech has announced the publication of a free White Paper on the simultaneous measurement of multiple gases in a wide variety of applications using FTIR (Fourier Transform InfraRed) technology. With the ability to measure almost any gas, FTIR monitoring technology is employed in an enormous variety of applications including Continuous Emissions Monitoring, Stack Testing, Process Control, Industrial Hygiene, Engine Emissions, Semiconductor Manufacturing, Emergency / First Response, Greenhouse Gas Monitoring,...