Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7078540 | Bioresource Technology | 2014 | 6 Pages |
Abstract
Engineered hydrochar composites (EHC) were synthesized by hydrothermal carbonization (HTC) of lanthanum pretreated rice straw. The as-prepared composite with about 30% lanthanum content showed greater P removal potential than La(OH)3, indicating the synergistic effect of hydrochar and lanthanum in P removal. The adsorption results showed that EHC showed great P adsorption capacities (>50 mg P gâ1) in the pH range of 2.5-10.5, and the presence of competing anions had little negative effects on P adsorption on EHC. The equilibrium time for P adsorption on EHC was considerably reduced under acid condition (12 h) compared to alkaline condition (48 h). The maximum adsorption capacity was 61.57 mg P gâ1 according to Langmuir isotherms. These results suggested that EHC was highly effective in P adsorption in a wide range of pH and the presence of competing anions, thus EHC could be a promising adsorbent for phosphorus removal/recovery from wastewater.
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Authors
Lichun Dai, Bo Wu, Furong Tan, Mingxiong He, Wenguo Wang, Han Qin, Xiaoyu Tang, Qili Zhu, Ke Pan, Qichun Hu,