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RISS 인기검색어
- 검색키워드
- 저자 : 정진홍 ( Jung Jin-hung ) (검색결과 2 건)
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( Miratul Maghfiroh ),임현만 ( Lim Hyun-man ),안광호 ( Ahn Kwang-ho ),정진홍 ( Jung Jin-hung ),장여주 ( Jang Yeo-ju ),장향연 ( Chang Hyang-yeon ),박나리 ( Park Na-ri ),김원재 ( Kim Weon-jae ) 한국물환경학회 2020 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2020 No.-
Water shortage becomes apparent threat whereby millions of people in the world are estimated to have experienced it even for a year-round. Recycling, reusing and reclaiming wastewater are among countermeasures to wisely utilize water in the future. Natural zeolites cater capabilities to recover polluted water. Zeolites act as ion exchangers by which favorable ions are adsorbed into active sites in the zeolite frameworks in exchange to ions with less affinity. These materials are also comparatively inexpensive and low-energy cost in maintenance especially for up-scale practices. We studied the performance of Korean domestic natural zeolites through column tests by analyzing breakthrough curves and evaluated the data according to Adam-Bohart and Thomas models. This study benefits to gain insights on appropriate design parameters for pilot scale in the future. Based on XRD analysis, our natural zeolites contain heulandite, clinoptilolite, mordenite, and quartz. It was also revealed that silica was 74.3% and aluminum compound was 14.6%. Column tests were carried out in a continuos flow with synthetic ammonium solutions of 50 mg/L as the influent. Bed height was 27.5 cm and particle sizes of zeolites were 1.18-2.36 mm. Two vertical velocities (5 m/h and 2.5 m/h) were chosen in this study. Observations of ammonium concentrations were monitored at certain times until breakthrough was reached around 50%. According to the curves, breakthrough of 0.05 Ct/C0 was achieved after 1.7 hours and 5.6 hours when using 5 m/h and 2.5 m/h vertical velocity correspondingly. We also challenged our experimental data against two common models for sorption in packed bed i.e. Adam-Bohart and Thomas models using non-linear regression approaches. We found that Thomas model fitted the experimental data well showing R<sup>2</sup>>0.92 with SSE<0.04. Adam-Bohart model explained mass balance of sorption process while Thomas model assumes that the reactions in packed bed are reversible.
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( Miratul Maghfiroh ),임현만 ( Lim Hyun-man ),안광호 ( Ahn Kwang-ho ),정진홍 ( Jung Jin-hung ),장여주 ( Jang Yeo-ju ),장향연 ( Chang Hyang-yeon ),박나리 ( Park Na-ri ),김원재 ( Kim Weon-jae ) 한국물환경학회 2020 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2020 No.-
Water shortage becomes apparent threat whereby millions of people in the world are estimated to have experienced it even for a year-round. Recycling, reusing and reclaiming wastewater are among countermeasures to wisely utilize water in the future. Natural zeolites cater capabilities to recover polluted water. Zeolites act as ion exchangers by which favorable ions are adsorbed into active sites in the zeolite frameworks in exchange to ions with less affinity. These materials are also comparatively inexpensive and low-energy cost in maintenance especially for up-scale practices. We studied the performance of Korean domestic natural zeolites through column tests by analyzing breakthrough curves and evaluated the data according to Adam-Bohart and Thomas models. This study benefits to gain insights on appropriate design parameters for pilot scale in the future. Based on XRD analysis, our natural zeolites contain heulandite, clinoptilolite, mordenite, and quartz. It was also revealed that silica was 74.3% and aluminum compound was 14.6%. Column tests were carried out in a continuos flow with synthetic ammonium solutions of 50 mg/L as the influent. Bed height was 27.5 cm and particle sizes of zeolites were 1.18-2.36 mm. Two vertical velocities (5 m/h and 2.5 m/h) were chosen in this study. Observations of ammonium concentrations were monitored at certain times until breakthrough was reached around 50%. According to the curves, breakthrough of 0.05 Ct/C0 was achieved after 1.7 hours and 5.6 hours when using 5 m/h and 2.5 m/h vertical velocity correspondingly. We also challenged our experimental data against two common models for sorption in packed bed i.e. Adam-Bohart and Thomas models using non-linear regression approaches. We found that Thomas model fitted the experimental data well showing R<sup>2</sup>>0.92 with SSE<0.04. Adam-Bohart model explained mass balance of sorption process while Thomas model assumes that the reactions in packed bed are reversible.
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