Journal of the Korean Industrial and Engineering Chemistry, Vol.13, No.3, 274-277, May, 2002
미나리를 이용한 LAS와 ABS의 제거효율 비교에 관한 연구
A Study on Comparison of Removal Efficiency in LAS and ABS with Oenanthe Javanica
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초록
본 연구는 우리나라 여건에 잘 성장하는 수생식물중 식용으로 재배되는 미나리를 이용하여 ABS 및 LAS의 수질정화능력에 대해 조사하기 위하여 실시하였다. 증류수에 ABS 및 LAS를 각각 10 mg/L를 첨가하여 5일간 광분해 및 생분해 실험을 실시한 결과 ABS는 4%, 그리고 LAS는 6%가 제거되어 적절한 처리없이 하천 유입되었을 때 산소전달의 차단 등 수중생태계에 악영향을 미칠 것으로 판단되었다. 그리고 증류수에 미나리를 300 g/4 L로 재배한 결과, 수경재배 5일을 기준으로 ABS는 42%가 제거된 반면, LAS는 80%가 제거되었는데, 이러한 결과는 가지형인 ABS 보다 직쇄형인 LAS가 미나리에 의하여 더 잘 제거된다는 다른 연구자들의 결과와 잘 부합되는 것으로 확인되었다. 또한 인공배양액의 사용으로 ABS 및 LAS제거의 제거효율이 향상된 것을 볼 수 있었으나, 5 mg/L 이상의 ABS 및 LAS농도에서는 인공배양액의 사용에도 불구하고 큰 제거효율은 기대할 수 없었으며, 오히려 미나리 생체중량의 감소가 관측되었다. 이는 5 mg/L 이상의 ABS 및 LAS가 미나리 생육에 독성으로 작용한 결과로 판단되었다.
This study was conducted to examine the removal efficiency of LAS (linear alkybenzene sulfonate) and ABS (alkybenzene sulfonate) by Oenanthe javanica, which is one of the aquatic plants in Korea. The concentrations of surfactants were measured in 3 different media: ⓐ in pure water; ⓑ in water containing Oenanthe javanica; and ⓒ in water containing Oenanthe javanica and commercial nutrients. The results showed that LAS was removed more effectively by Oenanthe javanica, probably because this has more linear carbon chains than ABS, which has branched carbon structure. In the experiment of photodegradable and biodegradable, 5-day cultivating test with initial concentration of 10 mg/L showed that ABS and LAS removals were 4%, 6% respectively. Thus, when Oenanthe javanica as added to the sample solution containing ABS and LAS, the removal efficiency increased. With the synthetic nutrients, ABS and LAS were more effectively removed than the one with only Oenanthe javanica in distilled water. In the case of high concentrations of surfactants, more than 5 mg/L, it was found that any additional amount of the synthetic nutrients added showed no further increase in the removal of ABS and LAS. In fact, at such high concentrations of surfactants, the surfactants inhibited the growth of Oenanthe javanica.
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