Odour abatement

Some experiences with olfactometric measurements in connection with odour abatement processes, mainly in sewage sludge and waste water treatment plants and in the fish meal industry, are presented. Studies have been carried out to calculate the efficiency of various odour reducing Methods. The additional information provided by the measurements was of practical use for the management of the process to improve odour reducing efficiency. 

Mufioz R, Sivret EC, Pares G, Lebrero R, Wang X, Suffet IH, Stuetz RM (2010) Monitoring techniques for odour abatement assessment. Water Res 44(18) 5129-5149... 

Hermia, J. and Vigneron, S. (1993). Catalytic incineration for odour abatement and VOC destruction, Catal. Today, 17, pp. 349-358. 

Estrada, J.M., Kraakman, N.J.R., Lebrero, R. Munoz, R. 2012. A sensitivity analysis of process design parameters, commodity prices and robustness on the economics of odour abatement technologies. Biotechnology Advances 30(6) 1354-1363. 

The response of vertebrates to olfactory stimulation is affected by previous experience but behaviour can be specifically affected by odours (pheromones) (4). The olfactory system has been shown to detect specific components within complex mixtures and analytical chemistry techniques have been used to identify these active components (5). We have assessed the application of these methods to the problems of agricultural odours in an attempt to develop techniques applicable to both slurries and air samples. The identification of the odorous components might allow specific treatment methods to be developed. In addition, the designation of a range of indicator compounds might be useful in practice for monitoring abatement of odour nuisances. 

Biotechniques for Air Pollution Abatement and Odour Control Policies edited by A. J. Dragt and J. van Ham... 

Biotechniques for Air Pollution Abatement and Odour Control Policies... 

Hot curing processes are characterised by major emission problems when heated, the resins and catalysts emit noxious chemicals including ammonia and formaldehyde that can be the source of odour nuisance. A number of abatement techniques have been tried to solve these problems, such as scrubbing, combustion or biological abatement, but none of these has proven to be... 

PHENOLIC URETHANE 1. Gas hardened Cold-box 2. Self-setting (phenohc urethane no bake) Amine vapour - low Self-set with substituted pyridine - low Isocyanate (MDI) Amine Formaldehyde Phenol Isocyanates (MDI) Formaldehyde Phenol Odour is frequently a problem - where DMEA is used odours arise and abatement is essential. This may be incineration or gas scrubbing (using sulphuric or phosphoric acids) - the latter gives rise to hquors, which are a special waste. Where TEA is used scmbbing is only required if odour problems arise... 

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