Details

Autor(en) / Beteiligte

• Zhai, Li-hua
• He, Lian-sheng
• Xi, Bei-dou
• Chen, Yue
• Meng, Rui
• Huo, Shou-liang
• Liu, Hong-liang

Titel

Phosphorus adsorption and regeneration of electric arc furnace steel slag as wetland medium

Ist Teil von

• Huanjing kexue, 2008-12, Vol.29 (12), p.3410

Ort / Verlag

China

Erscheinungsjahr

2008

Quelle

MEDLINE

Beschreibungen/Notizen

• The long-term phosphorus (P) adsorption and retention capacities of electric arc furnace (EAF) steel slag materials derived from one batch and a 278-d column experiments with a synthetic P solution were compared. The investigations of the regeneration of the P adsorption capacity by water level decrease was conducted. It was revealed column experiment on a long-term basis can determine P saturation of EAF accurately. And the results can be used for realistic estimations of constructed wetland systems (CWS) longevity. EAF slag showed a high afinity for P, reaching a saturation value of 1.65 g/kg. Regeneration experiment of the P adsorbing capacity by this material showed that, after 4 weeks of water level decrease, EAF steel slag was able to increase its initial P adsorption capacity to 2.65 g/kg. A sequential P fractionation experiment was performed to quantify the proportion of P bound to mineral compounds in EAF. From the most loosely bound to the most strongly bound P fraction, P1 was associated with resin