Chemical fractionation method for characterization of biomass-based bottom and fly ash fractions from large-sized power plant of an integrated pulp and paper mill complex  

化学分离法分析大型纸浆发电厂废渣中生物质底灰和飞灰成分(英文)

作　　者：Risto PYKI Hannu NURMESNIEMI Olli DAHL Mikko MKEL 

机构地区：[1]City of Kemi,Valtakatu 26, FI-94100 Kemi, Finland [2]Stora Enso Oyj,Veitsiluoto Mill, FI-94800 Kemi, Finland [3]Aalto University,School of Chemical Technology, Department of Forest Products Technology,P. O. Box 16300, FI-00076 Aalto, Finland [4]Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology, Division of Biomass Technology and Chemistry, P.O. Box SLU, SE-90183 Ume,Sweden

出　　处：《Transactions of Nonferrous Metals Society of China》2014年第2期588-596,共9页中国有色金属学报（英文版）

摘　　要：The aim of this study was to extract the biomass-based bottom and fly ash fractions by a three-stage fractionation method for water-soluble （H2O）, ammonium-acetate （CH3COONH4） and hydrochloric acid （HCl） fractions in order to access the leaching behaviour of these residues. Except for Mo, S, Na and elements whose concentrations were lower than the detection limits, the extractable element concentrations in both ash fractions followed the order H2O＆lt;CH3COONH4＆lt;HCl. The elements concentrations in this study were also lower than those in our previous studies, in which certain extraction stages followed the BCR extraction procedure.采用三步分离法,其中第一步用水,第二步用乙酸铵,第三步用盐酸,提取纸浆发电厂生物质飞灰和底灰的组分,以评估这些残渣的浸出行为。除了Mo、S、Na以及那些浓度低于检测范围的元素外,在这两种灰份中,对于其他元素这三种浸出剂的浸出能力从弱到强的顺序为:水、乙酸铵和盐酸。采用三步分离法处理的废渣中元素浓度比前期用BCR连续提取法得到的低。

关 键 词：ASH extraction forest industry LANDFILLING LEACHING heavy metals waste 

分 类 号：X705[环境科学与工程—环境工程]