作　　者： ; ; ; (李炳堂）;

机构地区： 长沙环境保护职业技术学院

出　　处： 《环境科学与技术》 2014年第7期92-96,共5页

摘　　要： 通过实验模拟,考察了粒径、炭层厚度、水体温度等因素对生物炭吸附与固定底泥氮磷的影响。结果表明：生物炭对氨氮与磷酸盐的最大吸附容量分别为4.92 mg/g、1.90 mg/g,吸附过程符合Langmuir和Freundlich方程,在温度5~35℃、粒径80目、炭层厚度0.5cm时,模拟水体中TN和TP浓度可维持在0.55~0.85 mg/L和0.02~0.04 mg/L之间,说明生物炭能很好的吸附水体中的N、P并将其固定在底泥中。 Through the experimental simulation, influencing factors such as particle size, biochar layer and water temperature of adsorption and fixation on nitrogen and phosphorus of sediment were studied. Results showed that the maximum adsorption capacity of biochar about nitrogen and phosphorus was 4.92 mg/g and 1.90 mg/g. The adsorption process could be fitted by Langmuir and Freundlich model. The concentration of TN and TP of the simulative water could be kept at 0.55-0.85 mg/L and 0.02-0.04 mg/L, which demonstrated that the biochar could adsorb and fix nitrogen and phosphorus in the sediment well.

关 键 词： 生物炭 富营养化 底泥 氮磷固定

领　　域： [环境科学与工程]