본 연구에서는 자연수, 하폐수에 많이 포함되어 있는 파울링 유발 물질 중 하나인 alginic acid sodium salt를 축전 식 탈염공정(capacity deionization, CDI)에서 파울링 감소를 위한 조건을 확립하고자 한다. 먼저 feed 물질로 NaCl을 사용하 였다. 이는 파울링 발생에 대한 비교 물질로, 파울링이 발생하지 않음을 관찰하였다. Alginic acid sodium salt를 사용하여 파 울링 발생 여부를 확인하였다. 농도는 7 mg/L, 흡착 1.2 V 5 min, 탈착 -2 V 1 min에서 효율이 50.07%으로 제일 효율적인 탈 착 조건임을 알 수 있었다.

In this study, we suggest conditions to reduce fouling in capacitive deionization (CDI) caused by alginic acid sodium salt, one of the most common fouling-causing substances in natural water and wastewater management. First, NaCl is used as feed material, which is selected as the control of the experiment. As expected, fouling phenomena is not observed from NaCl. On the other hand, when alginic acid sodium salt is added to the inlet, the fouling phenomena can be observed. In order to minimize the fouling phenomena, the feed concentration of alginic acid sodium salt, applied potential during desorption process, and duration of applied potential to our CDI cell are controlled. With 7 mg/L of feed stream concentration, CDI performed using 1.2 V for 1 min during adsorption followed by desorption with -2 V for 1 min exhibited the highest alginic acid salt removal efficiency reaching 50.07%.

요 약
Abstract
1. 서 론
2. 실 험
    2.1. 시약 및 재료
    2.2. 축전식 탈염 실험
    2.3. Scanning electron microscope (SEM)
3. 결과 및 고찰
    3.1. NaCl 100 mg/L를 공급액으로 설정한 CDI 실험
    3.2. AA 농도에 따른 CDI 실험
    3.3. 탈착 전압에 따른 CDI 운행 실험
4. 결 론
Reference

• 이진연(한남대학교 화공신소재공학과) | Jin Yeon Lee (Department of Advanced Materials and Chemical Engineering, Hannam University)
• 임지원(한남대학교 화공신소재공학과) | Ji Won Rhim (Department of Advanced Materials and Chemical Engineering, Hannam University) Corresponding author