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Evaluation of Loess Capability for Adsorption of Total Nitrogen (T-N) and Total Phosphorous (T-P) in Aqueous Solution
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  • Evaluation of Loess Capability for Adsorption of Total Nitrogen (T-N) and Total Phosphorous (T-P) in Aqueous Solution
  • Evaluation of Loess Capability for Adsorption of Total Nitrogen (T-N) and Total Phosphorous (T-P) in Aqueous Solution
저자명
Kim. Daeik,Ryoo. Keon Sang,Hong. Yong Pyo,Choi. Jong-Ha
간행물명
Bulletin of the Korean Chemical Society
권/호정보
2014년|35권 8호|pp.2471-2476 (6 pages)
발행정보
대한화학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

The aim of the present study is to explore the possibility of utilizing loess for the adsorption of total phosphorous (T-P) and total nitrogen (T-N) in water. Batch adsorption studies were performed to evaluate the influences of various factors like initial concentration, contact time and temperature on the adsorption of T-P and T-N. The adsorption data showed that loess is not effective for the adsorption of T-N. However, loess exhibited much higher adsorption capacity for T-P. At concentration of $1.0mgL^{-1}$, approximately 97% of T-P adsorption was achieved by loess. The equilibrium data were fitted well to the Langmuir isotherm model. The pseudo-second-order kinetic model appeared to be the better-fitting model because it has higher $R^2$ compared with the pseudo-first-order and intra-particle kinetic model. The theoretical adsorption equilibrium $q_{e,cal}$ from pseudo-second-order kinetic model was relatively similar to the experimental adsorption equilibrium $q_{e,exp}$. The thermodynamic parameters such as free energy ${Delta}G$, the enthalpy ${Delta}H$ and the entropy ${Delta}S$ were also calculated.