生物质炭对黑土磷吸附-解吸特性的影响  

Effects of Biochar Addition on Adsorption-Desorption Characteristics of Phosphorus in Black Soil

作　　者：赵闪闪[1,2] 王冰[1,2] 高云航[3] 高强[1,2] 刘淑霞[1,2] ZHAO Shanshan WANG Bing GAO Yunhang GAO Qiang LIU Shuxia(College of Resources and Environment, J ilin Agricultural University, Changchun 130118, China Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, Changchun 130118, China College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China)

机构地区：[1]吉林农业大学资源与环境学院,长春130118 [2]吉林省商品粮基地土壤资源可持续利用重点实验室,长春130118 [3]吉林农业大学动物科学技术学院,长春130118

出　　处：《吉林大学学报（理学版）》2017年第1期181-188,共8页Journal of Jilin University:Science Edition

基　　金：公益性行业(农业)科研专项基金(批准号:20110303);现代农业产业技术体系建设专项基金(批准号:nycytx-38)

摘　　要：利用平衡法研究添加不同质量分数的3种生物质炭(玉米秸秆、稻壳和松木)对黑土中磷吸附和解吸特性的影响.结果表明:随着生物质炭添加质量分数的增加,生物质炭对黑土中磷的吸附量先增加后减少,当添加质量分数为1.2%时,黑土对磷的吸附量最大;添加不同生物质炭对黑土中磷的吸附能力影响顺序为:松木>玉米秸秆>稻壳;添加松木生物质炭的黑土对磷的实际最大吸附量为0.697mg/g;添加生物质炭的黑土对磷的吸附量和解吸量均随加入磷溶液质量浓度的增加而增加,但增加幅度逐渐变小;添加生物质炭的黑土对磷的等温吸附曲线符合Langmuir吸附方程.By using the balance method, we investigated the effects on the adsorption-desorption characteristics of phosphorus in black soil with the biochars from different addition mass fraction and different sources （corn stalk, husk, pine）. The results show that with the increase of the addition mass fraction of biochars, the amount of phosphorus adsorption in the black soil increase first and then decrease. When the mass fraction of 1.2% is added, the phosphorus adsorption capacity of black soil is maximum. The adsorption capacity of different biochars on phosphorus in black soil is as follows= pine〉corn stalk〉husk. The black soil mixed with pine biochar on phosphorus adsorption capacity is the largest, which value is 0. 697 mg/g. Phosphorus adsorption and desorption capacity is increased with mass concentration of phosphorus solution increased, but the rate of increase is gradually smaller. The isothermal adsorption curve of phosphorus in block soil conforms to the Langmuir adsorption equation.

关 键 词：生物质炭 黑土 磷元素 吸附-解吸 

分 类 号：X53[环境科学与工程—环境工程]