| Autor: |
Zeng-jie, Jiang, Guang-hua, Wang, Jian-guang, Fang, Ji-hong, Zhang, Yu-ze, Mao, Wei, Wang, Nai-hao, Ye |
| Rok vydání: |
2009 |
| Předmět: |
|
| Zdroj: |
Huan jing ke xue= Huanjing kexue. 29(12) |
| ISSN: |
0250-3301 |
| Popis: |
Phosphate adsorption characteristics onto surface sediments from aquaculture area in Sungo bay were studied in laboratory simulating condition, and phosphate adsorption-desorption equilibrium mass concentration was also analyzed. The results showed that the process of phosphate adsorption onto sediments mainly occurred within 0.5 h, and attended to dynamic equilibrium after 6 h. Adsorption kinetics were fitted to modified Elovich model which can be expressed by Q = 85.536 + 35.512 lnt (R2 = 0.9602). Under low initial phosphate concentration condition, the adsorption isotherm curves were fitted to linear equation Q = 265.04c(e) - 7.46 (R2 = 0.965), while under high initial phosphate concentration condition, the adsorption isotherm curves were fitted to Langmuir equation (R2 = 0.989). The native adsorbed phosphorus was 7.46 microg/g and the maximum adsorption capacity was 769.23 microg/g. The phosphate adsorption-desorption equilibrium mass concentration was 0.028 mg/L, which indicated that the sediments played the source role in most time in this area based on the phosphate concentration in water body. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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