排序方式: 共有3条查询结果,搜索用时 0 毫秒
1
1.
Vicentius Ochie Arief Kiki Trilestari Jaka Sunarso Nani Indraswati Suryadi Ismadji 《洁净——土壤、空气、水》2008,36(12):937-962
A significant number of biosorption studies on the removal of heavy metal from aqueous solutions have been conducted worldwide. Nearly all of them have been directed towards optimizing biosorption parameters to obtain the highest removal efficiency while the rest of them are concerned with the biosorption mechanism. Combinations of FTIR, SEM‐EDX, TEM as well as classical methods such as titrations are extremely useful in determining the main processes on the surfaces of biosorbents. Diverse functional groups represented by carboxyl, hydroxyl, sulfate and amino groups play significant roles in the biosorption process. Solution pH normally has a large impact on biosorption performance. In brief, ion exchange and complexation can be pointed out as the most prevalent mechanisms for the biosorption of most heavy metals. 相似文献
2.
I. K. Chandra Y.-H. Ju A. Ayucitra S. Ismadji 《International Journal of Environmental Science and Technology》2013,10(2):359-370
The feasibility of natural bentonite and rarasaponin–bentonite for Evans blue removal from aqueous solution was studied. Rarasaponin is a natural surfactant obtained from Sapindus rarak DC was used as modifying agent for natural bentonite modification. Adsorption experiments were conducted in a batch system at various temperatures. Several temperature-dependent isotherm models (Langmuir, Freundlich, Sips and Toth) were used to represent equilibrium data. It was found that Toth model represents the adsorption equilibrium data better than other models. Kinetic data were best represented by the pseudo-first order model. The controlling mechanism of the adsorption of Evans blue onto natural bentonite and rarasaponin–bentonite was physical adsorption. 相似文献
3.
Prabnakorn Saowanit Maskey Shreedhar Suryadi F. X. de Fraiture Charlotte 《Natural Hazards》2019,97(2):891-911
Natural Hazards - When assessing drought risk, most studies focus on hazard and vulnerability, paying less attention to exposure. Here, we propose a comprehensive drought risk assessment scheme... 相似文献
1