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Adsorbent usage for VOC removal in synthetic latices
Author(s) -
Racz Robert
Publication year - 2000
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200004)155:1<171::aid-masy171>3.0.co;2-6
Subject(s) - adsorption , toluene , activated carbon , styrene , stripping (fiber) , solvent , chromatography , volatile organic compound , extraction (chemistry) , carbon fibers , chemistry , chemical engineering , materials science , pulp and paper industry , waste management , organic chemistry , polymer , composite material , copolymer , engineering , composite number
In the synthetic latex industry, there is a trend towards lower VOC levels. This paper describes an alternative to the current steam stripping or chemicals injection processes, namely using adsorbents for VOC removal for a styrene‐butadiene latex. Both batch and continuous adsorption experiments were performed to screen adsorbents, experimental conditions and simulate plant scale‐up. The removal effect of the adsorbents was determined using gas chromatography (GC). It was found that activated carbon had the best VOC removal efficiency, and optimum operating conditions existed at a pH of 10.5, and ambient temperature. It was further found in the carbon bed experiments that the VOC level could be lowered down to 150 ppm, which was the minimum attainable. The regeneration of the spent carbon using solvent extraction was also investigated. Several solvents were tested, and toluene was found to be the most efficient.