污水磷回收新产物-蓝铁矿

Translated title of the contribution: New product of phosphorus recovery-Vivianite

Xiaodi Hao, Jian Zhou, Chongchen Wang, Mark Van Loosdrect

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

The potential crisis of phosphorus resource is unprecedentedly pushing phosphorus recovery from wastewater and other sources. Although products of phosphorus recovery are variable, economic and high value-added products could promote owners to do so voluntarily. Among others, vivianite (Fe 3 (PO 4 ) 2 •8H 2 O), which has been found to exist largely during biological sludge (biomass), is arousing attention to researchers. In fact, vivianite, a stable (K sp = 10 -36 ) ferrophosphorus compound, widely exists in natural sediments. Besides such inherent factors as rich iron and phosphate, there are also some external factors determining formation of vivianite, like low oxidation-reduction potentials (ORP<-300 mV) and suitable pH conditions (6~9), etc. Fortunately, these inherent and external factors could be satisfied in wastewater and/or processes of wastewater treatment, and some wastewater treatment plants (WWTPs) in the Netherlands declared that they indeed found a large amount of vivianite presence in biological sludge. To promote both fundamental and applied researches on vivianite, the article reviews vivianite in: i) chemical properties, economic value and recovered potential; ii)controlling factors like pH, ORP, microorganisms, sulfide, etc.; iii) pathways of vivianite formation in biological sludge; iv) separation and purification of vivianite.

Original languageChinese
Pages (from-to)4223-4234
JournalHuanjing Kexue Xuebao/Acta Scientiae Circumstantiae
Volume38
Issue number11
DOIs
Publication statusPublished - 2018

Keywords

  • Anaerobic environment
  • Biomass
  • Dissimilation metal reducing bacteria (DMRB)
  • Phosphorus recovery
  • Sulfide
  • Vivianite

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