Sulphur-doped carbon-based materials have attracted a great deal of interest because of their important applications in the fields of oxygen reduction reactions, hydrogen storage, supercapacitors, photocatalysts and lithium ion batteries. Here, we report a new member of sulphur-doped carbon-based materials, i.e. sulphur doped graphene quantum dots (S-GQDs). The S-GQDs were prepared by a hydroth...

Once the acidic gases have been emitted to the atmosphere they can be transported over large distances. Hydrogen chloride is highly soluble and is deposited close to source areas, whereas sulphur dioxide and nitrogen oxides are relatively insoluble (at atmospheric concentrations) and are therefore usually transported much further from the source before being deposited. For example, around 90% o...

A method for analysis of heavy sulphur compounds in wines, based on gas chromatography (GC) with flame photometric detection, is reported. Wine samples preparation includes a dichloromethane liquid–liquid extraction followed by concentration under a nitrogen atmosphere. The extracted fraction was also analysed by GC–mass spectrometry. The method enables high recovery of sulphur compounds in win...

The main aim behind this paper is to develop, design and implement on-line fault diagnosis on real-time industrial processes with suitable performance measures. For this purpose, the system is modeled using Petri nets. The system considered for study here is the Sulphur recovery unit (SRU) of Chennai Petroleum Corporation Ltd (CPCL), Chennai. SRU is one of the most important units in the refini...

A survey of X-ray film processing departments revealed the main airborne contaminants to be sulphur dioxide and acetic acid at concentrations of about 0.1 ppm. Glutaraldehyde was not detected either in the ambient air or in the exhaust duct from an automatic film processor. Laboratory studies confirmed sulphur dioxide and acetic acid as the main headspace constituents above working strength pro...

Combustion of fossil fuels causes carbon emissions which contribute to global climate change. But combustion processes are also responsible for sulphur emissions and sulphate aerosols o set part of the global warming problem since they increase locally the albedo of the Earth's atmosphere. However, sulphate aerosols contribute to the regional acidi cation and acid rain problem. Integrated asses...

This study aims to develop a predictive framework to assess the removal and fate of trace organic chemicals (TrOCs) during wastewater treatment by anaerobic membrane bioreactor (AnMBR). The fate of 27 TrOCs in both the liquid and sludge phases during AnMBR treatment was systematically investigated. The results demonstrate a relationship between hydrophobicity and specific molecular features of ...

In the Campbell Hospital I have been observing the effects of Hydrarg37ri Sulphidum Nigrum and of Hydrargyri Sulphidum Rubrum in cases of chronic dysentery and chronic liver complaints for over two years. Hydrargyri Sulphidum Nigrum is prepared by rubbing together equal parts of mercury and sulphur. When this chemical compound is heated just to allow the sulphur to melt, the fused mass becomes ...