利用比表面积分析仪（ BET ）、 X 射线光电子能谱仪（ X P S ）研究了水稻秸秆生物炭的结构 与性质,考察了吸附时间、固液比、 pH 等因素对生物炭吸附性能的影响,并探讨了生物炭材料对 Pb2＋的吸附机理.结果表明：水溶液的pH 值是影响生物炭吸附能力的关键因素;吸附过程符合准 二次动力学方程,等温吸附过程符合Langmuii？方程式,并且通过Langmuii？方程式求出其最大吸附 量高达60. 57 mg/g ;水稻秸秆生物炭对P b2 ＋吸附是以化学吸附为主.
摘要(英文)：
T h e structure and properties of rice straw biochar were studied by B E T and X P S . Theeffects of adsorption time,solid - liquid ratio and p H on the adsorption properties of biochar were in-vestigated and the adsorption m e c h a n i s m of lead by biochar materials was also discussed through theadsorption isotherms and kinetics. The results showed that the p H value of aqueous solution had acrucial influence on the adsorption capacity of rice straw biochar. T h e adsorption process accords with the pseudo - second - order kinetics and the ...
