Identification of phenolic compounds in waste water from coal gasification by SPE and GC/MS

Measurement, correlation and COSMO-SAC prediction of liquid-liquid equilibrium for the ternary systems, mesityl oxide + o-, m-, p-cresol + water, at 333.2K and 353.2 K

“…With high toxicity even at low concentration, phenolic compounds cause serious damage to human beings, animals and plants if discharging without treatment [5]. Cresols are the primary phenolic compounds in the coal gasification wastewater [6], and are listed as priority pollutants by the EU and the USA-EPA [7]. Removing cresols from water with conventional recovery process, e.g.…”

Measurement and thermodynamic modeling of ternary (liquid + liquid) equilibrium for extraction of o-cresol, m-cresol or p-cresol from aqueous solution with 2-pentanone

“…The temperatures of the injection port and FID detector were set at 523.15 K and 543.15 K, respectively, and the GC oven's temperature was at first kept at 313.15 K for 2 minutes, then was increased from (313.15 to 433.15) K at a rate of 0.5 K • s -1 , and finally kept at 433.15 K for another 2 minutes. The nitrogen flow rate for the separation column was set at 30 cm 3 • min -1 . The mass fractions of 2-pentanone and cresols in samples of both the aqueous phase and organic phase were measured by an internal standard method, with 1, 3, 5-trimethylbenzene as internal standard for cresols and n-butyl acetate for 2-pentanone, and samples as well as the internal standards were all weighed by an analytical balance (Shimadzu AUW220D) accurate to within ± 0.0001 g. The mass fraction of the third component (i.e.…”

“…Cresols are among the principal components in the phenols-containing coal gasification wastewaters [3]. Cresols in the wastewaters are highly toxic even at low concentration [4], and have been listed as the priority pollutants by the U.S. EPA and the EU [5].…”

Potential and Representatives for Application of Environmental Management System (EMS) to Food Industries

“…The phenolic compounds contained in this wastewater are used as feedstock for the production of polymers, drugs and dyes despite their poor environmental performance. Therefore, an extraction of phenols from water samples by liquid-solid phase extraction is employed (Pissolato et al, 1996).…”