摘要
本研究将人工制备的生物质炭以0％～2％范围的量添加到受试土壤中,通过比较生物质-土壤体系的理论吸附容量和实际吸附容量,初步阐明生物质炭与土壤的相互作用对BDE-47在土壤中的吸附行为的影响.当生物质炭的添加量为0.1％、0.5％、1.0％时,生物质炭与土壤的相互作用对BDE-47的吸附行为的影响不明显;当生物质炭添加量为2.0％,BDE-47的吸附平衡浓度Ce为0.95 μg/L时,生物质炭与土壤的相互作用可以抑制土壤对BDE-47的吸附,使吸附能力降低了33％,而当Ce为9.5μg/L时,生物质炭与土壤的相互作用可以促进土壤对BDE-47的吸附,使吸附能力提高了146％.生物质炭与土壤的相互作用可以影响BDE-47在土壤中的吸附行为,影响程度的大小与生物质炭的添加量和吸附平衡浓度有关.
In this study, the artificial biochar was added into the soil at a dosage of 0% ~ 2% of the soil weight, by comparing the theoretical and aetual adsorption capacity of the biochar and soil systems, to study the effect of the interaction between bioehar and soil on BDE-47 adsorption behavior. The influence was insignificant when bio-ehar dosage was 0. 1% , 0. 5% , and 1.0% of the soil weight. When biochar addition was 2.0% and the equilibrium concentration was 0. 95 μg/L, the interaction between biochar and soil could inhibit BDE-47 adsorption behaviour, led to a 33% decrease of the single point coefficient. However, when the equilibrium concentration was 9. 5 μg/L, the interaction between bioehar and soil could enhance BDE-47 adsorption behaviour, led to a 146% increase of the single point coefficient. The results showed that the interaction between biochar and soil could influence BDE-47 adsorption by soil, and the influence degree was relevant to biochar dosage and the adsorption equilibrium concentration of BDE-47.
出处
《四川环境》
2014年第6期12-17,共6页
Sichuan Environment
基金
环保公益性行业科研专项(201209053)
