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Competitive adsorption-desorption kinetics of phenoxyacetic acids and a chlorophenol in volcanic soil


, : Competitive adsorption-desorption kinetics of phenoxyacetic acids and a chlorophenol in volcanic soil. Environmental Technology 18(9): 937-943, Sept

Competitive adsorption and desorption kinetic experiments with 2,4-dichlorophenoxyacetic acid (2,4-D), 2-methyl-4-chlorophenoxyacetic acid (MCPA) and para-chloro-ortho-cresol in a volcanic soil clearly demonstrated that the rate of diffusion in mixtures of these chemicals are different compared to single solute values and therefore the assumption of single diffusion coefficient values may not be valid in many realistic situations. In the present article, the experimental data obtained from the batch reactor were compared with numerical calculations of a homogeneous surface diffusion model, developed for bicomponent systems. The model used the single component Freundlich parameters and the competition coefficients from bicomponent sorption experiments. The results showed that the adsorption surface diffusion coefficients were smaller by 12, 4 and 6% for 2,4-D, MCPA and PCOC, respectively, while for desorption they were smaller by 4-8%, which is attributed to competition between the solutes. In general, good agreement between the numerical and experimental results was obtained for all cases considered.

US$19.90

DOI: 10.1080/09593331808616613


Other references

Woo A.H.; Lindsay R.C., 1984: Characterization of lipase activity in cold stored butter. Addition of lipase from Candida cylindracea to butter caused concentrations of free fatty acids to increase with increasing storage temperatures and times. The free fatty acids concentrations in butters also increased with greater numbers of freez...

Sorel, G., 1891: La Loi de la conservation de la vie de M. Preyer. Rev Sci, xlvii 274-276

Motzo, R.; Pruneddu, G.; Lendini, M.; Locci, A.; Mameli, L., 1996: Sardinia. Results are reported from durum wheat trials at 6 sites on Sardinia during 1995-96. Data are tabulated on the main characters of the 25 varieties tested, including grain yield at the different sites and mean values for various yield-related traits...

Benford, F., 1944: Apparent Time Acceleration With Age. Science 99(2559): 37-37

Romero, E.; Soloaga, A., 1950: Chlorine and potassium ions in infections diseases and their action with DOCA. Medicina 18(3): 153-192

Kershaw G.; Licho R., 1991: Captopril stimulated pra complements captopril renography in complicated renal artery stenosis. Journal of the American Society of Nephrology 2(3): 492

Bauch, J.; Nagel, E., 1994: New reimbursement mechanisms within the scope of changes in the federal health care regulation. A brief overview on the status of the procedure. Der Chirurg; Zeitschrift für Alle Gebiete der Operativen Medizen 65(8): Suppl 181-2

Shi, J-Yi.; Ma, L-Jie.; Zhang, J-Wei.; Duan, M.; Ding, Z-Bin.; Yang, L-Xiao.; Cao, Y.; Zhou, J.; Fan, J.; Zhang, X.; Zhao, Y-Jun.; Wang, X-Ying.; Gao, Q., 2017: FOXP3 Is a HCC suppressor gene and Acts through regulating the TGF-β/Smad2/3 signaling pathway. FOXP3 has been discovered to be expressed in tumor cells and participate in the regulation of tumor behavior. Herein, we investigated the clinical relevance and biological significance of FOXP3 expression in human hepatocellular carcinoma (HCC). E...

Moya, F.; Ramos, A.; Manjon-Cabeza, M.E., 2003: Distribution and ecology of Ophionotus victoriae Bell, 1902 (Ophiuroidea, Echinodermata) in the South Shetland Islands area (Antarctica). We present a distribution analysis for Ophionotus victoriae Bell, 1902, based on abundance data obtained during the Bentart 95 Expedition, on a macrozoobenthos sampling transect from north of Livingston Island to the Antarctic Peninsula, with 24 A...

Derkach, V.; Surprenant, A., 1993: Purinergic P-2 receptor channel coupling in coeliac ganglia neurons. Biophysical Journal 64(2 PART 2): A326