Carbonology

Biofilters as odour control systems: flavour production Flavouring substances are widely used in the food industry and are chemically defined substances with flavouring properties. Depending on the production process, flavourings can be divided into two major groups: Natural flavours Synthetic...

DESOTEC Activated Carbon launches its new name C-PURE ® for a range of activated carbon powders that have been specially developed for decolourisation and purification of chemicals, pharmaceuticals and food products. The product is produced with optimised adsorption kinetics and good filtration...

Green gas production: biomethane for cleaner energy The Renewable Energy Directive RED 2009/28/EC on the promotion of the use of energy from renewable sources indicates that 20% of the energy needs has to be obtained from renewable sources and 10% of the energy needs in transport (transport fuels)...

What is creosote? Creosote has been widely used for the treatment of wooden railroad ties and wooden telephone poles to prevent rot. In the past, when there was less environmental awareness, creosotes often contaminated the soil in the wood treatment facilities. Creosotes are a variety of products...

VOC removal technologies Depending on the problem, VOC emission source reductions there are several options in regard to VOC emission source reduction. Possible approaches to reduce VOC emissions are: On-board degassing equipment; On-shore degassing facilities; Re-evaluation of cargo...

Introduction: chemical barges and the occurrence of VOC emissions Waterways are frequently used to transport petrochemicals, pressurized products, black oil products, refined petroleum products and agricultural chemicals from producers to intermediaries to end users. During transport and transfer...

When contaminants such as H 2 S and other odours need to be removed from an air or gas stream, it is important to select the correct activated carbon filter. The selection depends on several factors like: Flow rate; Concentration; Type of impurity; Superficial contact time; Location. The type of...

Introduction: What is bitumen? Ever heard of bitumen? Maybe… But what is bitumen exactly? Bitumen is a semi-solid hydrocarbon product produced by removing the lighter fractions (such as liquid petroleum gas, petrol and diesel) from heavy crude oil during the refining process. Bitumen and bituminous...

DESOTEC innovation: cost-effective hydrogen sulfide removal It is well known that every activated carbon will remove hydrogen sulfide from biogas to some extent. Hydrogen sulfide will adsorb on the internal carbon surface where it can be oxidised in presence of oxygen to sulphur. Ash constituents...

Hydrogen sulphide (H 2 S) is always present in biogas, although concentrations vary with the feedstock. The concentration of hydrogen sulphide in the gas is a function of the digester feed substrate and inorganic sulphate content. Wastes which are high in proteins containing sulphur-based amino...