Low-molecular-weight organic acids enable biochar to immobilize nitrate
作者: Natalie HeaneyEmem UkpongChuxia Lin
作者单位: 1School of Environment and Life Science, University of Salford, Greater Manchester M5 4WT United Kingdom
刊名: Chemosphere, 2020, Vol.240
来源数据库: Elsevier Journal
DOI: 10.1016/j.chemosphere.2019.124872
关键词: BiocharNitrate retentionOrganic acidProtonationAdsorption
英文摘要: Abstract(#br)Batch experiments were conducted using two biochar materials produced from different feedstocks to examine the behavior of solution-borne nitrate in the presence and absence of three model low-molecular weight organic acids (LMWOAs). The results showed that the biochar materials alone were not able to remove the solution-borne nitrate. LMWOAs caused protonation of the biochar surfaces and consequently enabled the biochar materials to adsorb nitrate from the solution. Different types of LMWOA had different capacities to immobilize solution-borne nitrate. Over 80% of the solution-borne nitrate could be removed within 72 h in the presence of citric acid or malic acid. By comparison, removal rate of nitrate was lower in the presence of oxalic acid, possibly due to competition of...
全文获取路径: Elsevier  (合作)
影响因子:3.137 (2012)

  • nitrate 硝酸盐
  • organic 有机的
  • immobilize 停用
  • enable 充讦操作
  • weight 
  • molecular 分子的