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dc.contributor.author김기현-
dc.date.accessioned2019-04-29T00:25:56Z-
dc.date.available2019-04-29T00:25:56Z-
dc.date.issued2019-01-
dc.identifier.citationENVIRONMENTAL RESEARCH, v. 168, Page. 96-108en_US
dc.identifier.issn0013-9351-
dc.identifier.issn1096-0953-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0013935118305061?via%3Dihub-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/102790-
dc.description.abstractTo effectively remove gaseous pollutants from air using sorbents, a thorough knowledge of the actual sorption performance is needed at ambient conditions rather than at unrealistically high-pressure conditions, as is commonly presented in the literature. To this end, the sorbent capacities of gaseous benzene were evaluated at a constant sorbent bed inlet pressure (50 ppm or ~5 Pa) in 1 atm of N2, room temperature (298 K), a fixed flow rate (50 mL min−1), and equal outlet sampling intervals (5 min). The benzene adsorption patterns were investigated against six sorbent types in a total of 17 different forms: 1- zeolite in five forms: beads (ZB), ground to 212 µm (ZG212), beads ground to 300 µm (ZG300), coarsely ground/washed zeolite (ZWc), and coarsely ground/washed/thermally treated zeolite (ZTc), 2- activated carbon in two forms: 212 µm (ACd212) and granular (ACdg), 3- Carbopack-X (CX), 4- Tenax TA (TA), 5- used black tea leaves of 150 or 300 µm in three forms: dry (TD150/TD300), wet (TW150/TW300), and wet dust (TWd), and 6- used ground coffee in either dry (CD) or wet forms (CW). Accordingly, the largest adsorption capacities at 5 Pa (e.g., >10 mg g−1) were observed for ACd212 (79.1) and ACdg (73.6). Moderate values (e.g., 5 < < 10 mg g−1) were obtained for ZG212 (7.98), CX (6.79), ZG300 (5.70), and ZB (5.58), while the remainder were far lower at < 5 mg g−1 (e.g., tea leaves, ground coffee, TA, ZWc, and ZTc). The experimental benzene capacities of the tested sorbents were further assessed by the Langmuir, Henry's law, Freundlich, Dubinin-Radushkevich, and Elovich isotherm models. The linearized Langmuir adsorption isotherms of ACd212, ACdg, and CX showed the presence of more than one adsorption site (i.e., retrograde at the lowest pressures and two others at higher pressures). However, TA, zeolite, tea leaves, and ground coffee exhibited a type-V isotherm, wherein the sorption capacity continued to increase with loaded volume (i.e., multilayer adsorption). Thus, ACd212 has the best figure-of-merit based on a high 10% breakthrough volume (BTV) and low cost for real-world applications.en_US
dc.description.sponsorshipThis study was supported by a grant from the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (Grant No: 2016R1E1A1A01940995). KHK also acknowledges support provided by the Korea Ministry of Environment (MOE) (2015001950001) as part of "The Chemical Accident Prevention Technology Development Project".en_US
dc.language.isoenen_US
dc.publisherACADEMIC PRESS INC ELSEVIER SCIENCEen_US
dc.subjectBenzeneen_US
dc.subjectSorptionen_US
dc.subjectActivated carbonen_US
dc.subjectTea and coffee leavesen_US
dc.subjectRetrograde isothermsen_US
dc.titleA comparison of figure of merit (FOM) for various materials in adsorptive removal of benzene under ambient temperature and pressure.en_US
dc.typeArticleen_US
dc.relation.volume168-
dc.identifier.doi10.1016/j.envres.2018.09.019-
dc.relation.page96-108-
dc.relation.journalENVIRONMENTAL RESEARCH-
dc.contributor.googleauthorKhan, Azmatullah-
dc.contributor.googleauthorSzulejko, Jan E.-
dc.contributor.googleauthorKim, Ki-Hyun-
dc.contributor.googleauthorSammadar, Pallabi-
dc.contributor.googleauthorLee, Sang Soo-
dc.contributor.googleauthorYang, Xiao-
dc.contributor.googleauthorOk, Yong Sik-
dc.relation.code2019000322-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING-
dc.identifier.pidkkim61-
dc.identifier.orcidhttp://orcid.org/0000-0003-0487-4242-
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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