논문 해외 국제전문학술지(SCI급) Evaluation of Toxicity for Commercial Red Mud Pellets Using Pseudokirchneriella subcapitata and Daphnia magna
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2015-12
- 저자명 Jin Chul Joo, Saeromi Lee, Chang Hyuk Ahn, Jae Roh Park, Sooji Lee, Inju Lee
- 학술지명 Ecology and Resilient Infrastructure
- 발행처명 Korean Society of Ecology and Infrastructure Engineering
- 발행국가 해외
- 논문언어 외국어
- 연구분야 공학 > 환경공학
- 원문 링크 https://doi.org/10.17820/eri.2015.2.4.345
홈페이지논문 초록 (Abstract)
The toxicity of red mud (RM) pellets for water purification was evaluated using Pseudokirchneriella subcapitata and Daphnia magna in a lab-scale experiment. According to the algal growth inhibition test, both specific growth rates and relative growth rates of P. subcapitata decreased, and the growth inhibition rates increased ($R^2=0.97$, p<0.001) as the concentration of RM pellets in the aqueous solution increased (>1.6 g/L). Also, based on the acute toxicity evaluation test on D. magna, toxic unit (TU) values ranged between 0.00 and 2.83, and increased with an increase in the concentration of RM pellets in the aqueous solution. A correlation analysis indicated that the pH of RM pellets was statistically correlated with TU values ($R^2=0.77$, p=0.02). The environmental implication from this study is that the concentration of RM pellets in an aqueous solution needs to be lower than 4.4 g/L to keep the maximum permissible TU value less than 1.0.