摘要
采用自制的碳羟基磷灰石(CHAP)作为吸附剂处理人工湖水,分别考察了pH值、作用时间、吸附剂用量、温度等因素对色度和COD去除效果的影响。结果表明,在常温、pH值为5.5、吸附时间为60 min、CHAP用量为10 g.L-1的条件下,CHAP对人工湖水的色度和COD去除率分别达到82%、81%。CHAP吸附人工湖水中COD的机理符合一级动力学规律,动力学方程为ln(co/c)=0.5013t+0.9136,反应速率常数k=0.5013 h-1,半衰期t1/2=1.38 h。
This paper illustrated the effects of self-made carbonate hydroxyapatite（CHAP） as adsorption reagent on artificial lake. The influence factors such as pH value,adsorption time,CHAP dosage and temperature on the removal rates of chroma and COD were examined individually. The results showed that at room temperature,pH value of 5.5,adsorption time of 60 min ,CHAP dosage of 10.0 g · L^-1 ,the chroma removal rate and COD removal rate could reach 82% and 81% respectively. The adsorption mechanism of CHAP on COD was in consistent with the first-level dynamics rule and the dynamic equation could be expressed as ln（co/c）=0. 5013t ＋0. 9136,and the reaction velocity constant k was 0. 5013 h^-1 and the half life t1/2 was 1.38 h.
出处
《化学与生物工程》
CAS
2008年第9期61-64,共4页
Chemistry & Bioengineering
关键词
碳羟基磷灰石
人工湖水
色度
COD
吸附机理
carbonate hydroxyapatite
artificial lake
chroma
COD
adsorption mechanism
