Assessment of the strategies for reducing VOCs emission from polyurea-formaldehyde resin synthetic fiber leather industry in Taiwan

This study provides a novel attempt to assess the effectiveness of control strategies for reducing volatile organic compounds (VOCs) emission from polyurea-formaldehyde resin synthetic fiber leather (PU) industry. Dimethyl formamide (DMF), major content of solvents, accounts for roughly 2500 tonnes/year to avoid excessive viscosity of polyurea-formaldehyde and to increase facility in working. The other solvent contents, methyl ethyl ketone (MEK) and toluene, are used as carrier of DMF. Emission of these VOCs from solvent causes serious odor problems. It is important to know the VOCs pollution sources and emission characteristics before treating the VOCs in PU industry. In this study, 80 stacks in five factories were tested to evaluate emission characteristics at each VOCs source. After examining the VOCs concentrations in the flue gases and contents in the PU, the DMF emission rate before treatment and from fugitive source is 2300 and 80 tonnes/year, respectively. To reduce VOCs emission rate, it is important to assess reducing solvent content in painting and increasing control efficiency of treatment equipment. In this study, the zeolite rotator is recommended to be used as effective control equipment.

[1]  Sundergopal Sridhar,et al.  Separation of organic–organic mixtures by pervaporation—a review , 2004 .

[2]  T. Lindqvist,et al.  Exposure of animals and man to toluene. , 1977, Scandinavian Journal of Work, Environment and Health.

[3]  F. Dyro.  Methyl ethyl ketone polyneuropathy in shoe factory workers. , 1978, Clinical toxicology.

[4]  M. E. Maxfield,et al.  Urinary excretion of metabolite following experimental human exposures to DMF or to DMAC. , 1975, Journal of occupational medicine. : official publication of the Industrial Medical Association.

[5]  J. Oster,et al.  Toxic effects of toluene: a new cause of high anion gap metabolic acidosis. , 1979, JAMA.

[6]  William E. Brown,et al.  Elimination of VOC Emissions from Surface Coating Operations , 1993 .

[7]  B. Tichenor,et al.  Destruction of volatile organic compounds via catalytic incineration , 1987 .

[8]  E. Browning.  Toxicity and metabolism of industrial solvents , 1965 .

[9]  Study on the strategies of waste solvent minimization in automobile production industry , 1998 .

[10]  R A Wadden,et al.  Determination of VOC emission rates and compositions for offset printing. , 1995, Journal of the Air & Waste Management Association.

[11]  M. Lin,et al.  Treatment of volatile organic compounds from polyurethane and epoxy manufacture by a trickle-bed air biofilter. , 2001, Journal of bioscience and bioengineering.

[12]  Thierry Talou,et al.  MOS–MOSFET gas sensors array measurements versus sensory and chemical characterisation of VOC’s emissions from car seat foams , 2003 .

[13]  P. Neal,et al.  THE TOXICITY AND POTENTIAL DANGERS OF TOLUENE: PRELIMINARY REPORT , 1942 .

[14]  Dongquan He,et al.  Assessment of Vehicular Pollution in China , 2001, Journal of the Air & Waste Management Association.

[15]  R. Anderson,et al.  Renal tubular acidosis associated with toluene "sniffing". , 1974, The New England journal of medicine.