花生壳生物炭中溶解性碳黑对菲的环境行为研究  

Environmental behavior of dissolved black carbon from peanut shell biochar on phenanthrene

作　　者：马雍基 陈全 陈懿 王琳[1] 吴敏[1,2] MA Yongji;CHEN Quan;CHEN Yi;WANG Lin;WU Min(Faculty of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming Yunnan 650500;Key Laboratory of Soil Carbon Sequestration and Pollution Control of Yunnan Province,Kunming Yunnan 650500)

机构地区：[1]昆明理工大学环境科学与工程学院,云南昆明650500 [2]云南省土壤固碳与污染控制重点实验室,云南昆明650500

出　　处：《环境污染与防治》2020年第8期985-989,共5页Environmental Pollution & Control

基　　金：国家自然科学基金面上项目(No.41977334);国家自然科学基金地区科学基金项目(No.41663013);国家自然科学基金青年科学基金项目(No.41907322)。

摘　　要：生物炭中溶解性碳黑(DBC)具备强迁移性,其理化性质会随着原生质和热解条件的变化而改变。菲具有强生态毒性及致癌特性。以4种DBC(源于花生壳原生质及其200、400、500℃下热解得到的生物炭)为吸附剂,探究了它们的理化性质及对菲的吸附行为和作用机制。结果表明:(1)随着热解温度的升高,花生壳生物炭中DBC的总有机碳(TOC)含量减少。200℃热解得到的生物炭DBC芳香性最强,对菲的吸附能力也最强。(2)随着热解温度的升高,DBC中会形成更多的酚羟基和醚键,而脂肪族碳链、醇或酯会逐渐断裂。Dissolved carbon black(DBC)in biochar has strong mobility,and its physical and chemical properties will change with the changes of protoplast and pyrolysis conditions.Phenanthrene has strong ecological toxicity and carcinogenicity.Four kinds of DBC(from peanut shell protoplast and biochar obtained by pyrolysis at 200,400 and500℃)were used as adsorbents to investigate their physicochemical properties,adsorption behavior and mechanism of phenanthrene.The results showed:(1)with the increased of pyrolysis temperature,the total organic carbon(TOC)content of DBC in peanut shell biochar decreased.The biochar DBC obtained by pyrolysis at 200℃had the strongest aromaticity and the strongest adsorption capacity for phenanthrene.(2)As the pyrolysis temperature increasesd,more phenolic hydroxyl groups and ether bonds would be formed in DBC,while aliphatic carbon chains,alcohols or esters would gradually break.

关 键 词：溶解性碳黑 菲 芳香性 热解温度 

分 类 号：X506[环境科学与工程—环境工程]