Measurements of VOC Adsorption/Desorption Characteristics of Typical Interior Building Materials

Abstract

/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur.HVAC&R Research : International Journal of Heating, Ventilating, AirConditioning and Refrigerating Research, 5, 4, pp. 297-316, 1999-10-01 Measurements of VOC adsorption/desorption characteristics of typical interior building materials An, Y.; Zhang, J. S.; Shaw, C. Y. The material in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission. For more information visit http://laws.justice.gc.ca/en/showtdm/cs/C-42Les renseignements dans ce document sont protégés par la Loi sur le droit d'auteur, par les lois, les politiques et les règlements du Canada et des accords internationaux. Ces dispositions permettent d'identifier la source de l'information et, dans certains cas, d'interdire la copie de documents sans permission écrite.

Sorption of organic gases in a furnished room

“…As an example, Figure 4 shows that the sink model equilibrium partitioning coefficient (K eq = λ a /λ d ) was strongly correlated with the inverse of P 0 (see An et al, 1999 for discussion of this relationship). Linear regressions are presented separately for polar compounds (including the carbonyls, phenols, N-aromatics) and the relatively non-polar hydrocarbons.…”

“…Measured gas-phase concentrations were fit to equations developed from theory to obtain key parameter values, yielding semi-empirical sorption models (e.g., An et al, 1999;Bodalal et al, 2001;Bouhamra and Elkilani, 1999;Colombo et al, 1993;Jorgensen and Bjorseth, 1999;Jorgensen et al, 2000;Meininghaus et al, Piade et al, 1999;Tichenor et al, 1991;Van Der Wal et al, 1998;Van Loy et al, 2001;Won et al, 2000Won et al, , 2001aWon et al, , 2001b. In the most extensive of these studies, Won et al (2001a) reported adsorption and desorption rate coefficients for eight VOCs interacting with gypsum wallboard, carpet and cushion, acoustic ceiling tile, wood flooring, vinyl flooring, and fiberglass.…”

Validation of the surface sink model for sorptive interactions between VOCs and indoor materials

“…There has been an increasing amount of research on characterizing and modeling the sorptive sink effects using small size chambers in dynamic conditions (Tichenor et al, 1991;Colombo et al, 1993;Chang et al, 1998;van der Wal et al, 1998;Jørgensen and Bjørseth, 1999;An et al, 1999;Jørgensen et al 2000;Won et al, 2000).…”

“…The dominating modeling approach is to consider the sorptive sink effects as reversible surface phenomenon (Tichenor et al, 1991;Colombo et al, 1993;Chang et al, 1998;Jørgensen and Bjørseth, 1999;An et al, 1999;Won et al, 2000). The surface sink model (SSM) is based on the Langmuir isotherm at low concentration, which is common in indoor environments, and considers the rate of adsorption and desorption to be linearly proportional to the chemical concentrations in the air and material phases, respectively.…”

A mass transfer model for simulating VOC sorption on building materials

“…First, An et al (1999) found that the chamber walls themselves also had a To evaluate the strength of the material on sorbing or desorbing VOCs, Figure 7 gives the percentage of the total incoming VOC rate (from the inlet air) uptaken during the sorption period.…”