DOI: 10.1016/j.watres.2018.09.035
Scopus记录号: 2-s2.0-85054299016
论文题名: Acidification and recovery of phosphorus from digested and non-digested sludge
作者: Quist-Jensen C.A. ; Wybrandt L. ; Løkkegaard H. ; Antonsen S.B. ; Jensen H.C. ; Nielsen A.H. ; Christensen M.L.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 146 起始页码: 307
结束页码: 317
语种: 英语
英文关键词: Acidification
; Heavy metals
; Phosphorus
; Sludge
英文摘要: Acidification was used to dissolve phosphorus from digested and non-digested sludge from five wastewater treatment plants in order to make phosphorus accessible for subsequent recovery. More phosphorus was dissolved from digested sludge (up to 80%), with respect to non-digested sludge (∼25%) and the highest release was observed at pH 2. The acid consumption for digested sludge was higher than for non-digested sludge due to the presence of the bicarbonate buffer system, thus CO2 stripping increased the acid consumption. In all the experiments, the sludge was exposed to acid for 1 h. For the five tested sludge types, 60–100 mmol o-P was released per added mol H2SO4. It was mainly iron and calcium compounds that accounts for the phosphorus release at low pH. The release of heavy metals was in general low (<30%) for all the wastewater treatment plant, as Zn, Cd and Ni showed the most critical release after acidification of non-digested sludge. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112395
Appears in Collections: 气候减缓与适应
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作者单位: Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, Aalborg East, 9220, Denmark; Danish Technological Institute, Kongsvang Allé 29, Aarhus C, 8000, Denmark; Department of Civil Engineering, Aalborg University, Thomas Manns Vej 23, Aalborg East, 9220, Denmark
Recommended Citation:
Quist-Jensen C.A.,Wybrandt L.,Løkkegaard H.,et al. Acidification and recovery of phosphorus from digested and non-digested sludge[J]. Water Research,2018-01-01,146