[논문]DAX-8 레진의 수중 자연유기물의 분획조건 최적화 및 환경시료에의 적용

임혜빈; 허진; 김주원; 신현상

doi:10.15681/kswe.2022.38.3.133

[국내논문] DAX-8 레진의 수중 자연유기물의 분획조건 최적화 및 환경시료에의 적용
Optimization of Fractionation Conditions for Natural Organic Matter in Water by DAX-8 Resin and its Application to Environmental Samples 원문보기

한국물환경학회지 = Journal of Korean Society on Water Environment, v.38 no.3, 2022년, pp.133 - 142

임혜빈 (서울과학기술대학교 환경공학과) , 허진 (세종대학교 환경에너지공간융합학과) , 김주원 (서울과학기술대학교 환경공학과) , 신현상 (서울과학기술대학교 환경공학과)

Abstract ▼ AI-Helper

Natural organic matter (NOM) is a heterogeneous mixture of organic matter with various polarities and molecular weights in an aquatic environment. This study investigated the effects of separation conditions (resin volume, organic matter, etc.) and the repeated use of the resin for the fractionation of organic components in the DAX resin fractionation method. The distribution characteristics of the organic components ((hydrophilic [Hi], hydrophobic acid [HoA], and hydrophobic neutral [HoN]) under the derived fractionation conditions were also analyzed. Constant fractionation results (i.e. HoA/Hi ratio) were obtained in the column capacity factor (i.e. the packed resin volume) in the range of 50 to 100. The resin-packed column maintained constant separation efficiency for up to two repeated uses. The above conditions were applied to wastewater and stream water samples (before and after rainfall). The results showed that the concentration of organic matter in the wastewater effluent was 2-15 times lower with an increased ratio of hydrophilicity to hydrophobicity (i.e. Ho/Hi) compared to the influent depending on the industrial wastewater classification. Particularly, HoN was found to have a high content distribution, 10.2-50.4% of the total dissolved organic matter (DOM), in the effluents. For the stream water, the content of Hi or HoN increased significantly after rainfall, suggesting a correlation with the distribution characteristics of pollutants from the stream watershed. The results provide useful data to enhance the reliability of the DAX resin fractionation and its application to environmental samples.

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표/그림 (10)

표 Table 1. Wastewater sample information used in this study
표 Table 2. Stream sample information used in this study
$Fig. 1. The procedure of fractionation of Hydrophobic and Hydrophilic fractions in dissolved organic carbons from the samples.$ 그림 Fig. 1. The procedure of fractionation of Hydrophobic and Hydrophilic fractions in dissolved organic carbons from the samples.
그림 Fig. 2. Effect of the capacity factor on HoA/Hi ratios at different DOC concentration.
그림 Fig. 3. Comparison of HoA extraction according to column size.
그림 Fig. 4. Effect of OH^- concentration (mmol) on HoA extraction rate (Experiments: DOC = 4.7 mg/L, pH, capacity factor = 80).
그림 Fig. 5. HoN concentration change according to the number of rotational concentrations (Experiments: DOC = 4.7 mg/L, pH, capacity factor = 80).
$Fig. 6. Effect of repeated use of the DAX column on the measured ratios of DOC fractions (in a sample with sewage influent of 11 mg/L, at a capacity factor of 80).$ 그림 Fig. 6. Effect of repeated use of the DAX column on the measured ratios of DOC fractions (in a sample with sewage influent of 11 mg/L, at a capacity factor of 80).
$Fig. 7. The concentration of the DOC fractions in wastewater samples (upper) and stream water samples (below) (i: Influent, e: Effluent, 1: Before the rain, 2: After the rain).$ 그림 Fig. 7. The concentration of the DOC fractions in wastewater samples (upper) and stream water samples (below) (i: Influent, e: Effluent, 1: Before the rain, 2: After the rain).
$Table 3. Concentration (mg/L) and percentage (%) of the DOC fractions of the sample (i: Influent, e: Effluent, 1: Before the rain, 2: After the rain)$ 표 Table 3. Concentration (mg/L) and percentage (%) of the DOC fractions of the sample (i: Influent, e: Effluent, 1: Before the rain, 2: After the rain)

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