Biology of polyphosphate-accumulating bacteria involved in enhanced biological phosphorus removal
(1994) In FEMS Microbiology Reviews 15. p.137-153- Abstract
- Recent research on the process of biological phosphorus removal in lab-scale treatment systems has indicated that: (i) the development of an actively poly?-accumulating bacterial community after the introduction of an anaerobic period may take at least 4 months; (ii) up to 80% of all aerobic bacteria isolated from these communities are able to accumulate polyP; (iii) polyP synthesized by the bacterial communities of lab-scale treatment systems is probably mainly low polymeric, not exceeding 20 P-residues, and this polyP is rapidly degraded during the anaerobic period; (iv) the enzymatic hydrolysis of polyP under anaerobic conditions is accompanied by PHB formation from exogenous acetate, reducing equivalents are provided by the degradation... (More)
- Recent research on the process of biological phosphorus removal in lab-scale treatment systems has indicated that: (i) the development of an actively poly?-accumulating bacterial community after the introduction of an anaerobic period may take at least 4 months; (ii) up to 80% of all aerobic bacteria isolated from these communities are able to accumulate polyP; (iii) polyP synthesized by the bacterial communities of lab-scale treatment systems is probably mainly low polymeric, not exceeding 20 P-residues, and this polyP is rapidly degraded during the anaerobic period; (iv) the enzymatic hydrolysis of polyP under anaerobic conditions is accompanied by PHB formation from exogenous acetate, reducing equivalents are provided by the degradation of carbohydrates; and (v) nitric oxide inhibits the release of phosphate under anaerobic conditions in Renpho and F&D sludges. Bacteria belonging to the genus Acinetobacter occur in a wide variety of activated sludges in which enhanced biological phosphate remol is observed. A. johnsonii 210A was studied in detail with respect to the elemental composition of polyP granules, the enzymatic synthesis and degradation of polyP, the regulation of polyP metabolism, and the transport of phosphate. A. johnsonii 210A reflects activated sludge in a number of ways as far as polyP metabolism is concerned but its polyP is highly polymeric and the phosphate efflux rate under anaerobic conditions is relatively low and not increased by exogenous acetate. In addition to Acinetobacter, other polyP-accumulating microorganisms may be involved in biological phosphorus removal. The isolation of polyP-accumulating denitrifying bacteria may well have interesting implications for a new process design in wastewater treatment systems. Further studies on the enzymes involved in polyP biosynthesis and on the uptake and efflux systems of phosphate, potassium, magnesium and lower fatty acids in pure cultures will enlarge our insight in the energetics of the metabolism of polyP. In addition, the regulation of the metabolism of polyP-accumulating organisms needs to be studied in more detail. (Less)
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https://lup.lub.lu.se/record/a9bff090-d86a-4fb3-9560-ed80b093a957
- author
- Kortstee, GJJ ; Appeldoorn, KJ ; Bonting, CFC ; van Niel, Ed LU and van Veen, HW
- publishing date
- 1994
- type
- Contribution to journal
- publication status
- published
- keywords
- Phophorus removal, Acinetobacter, Polyphosphate, Phosphate transport
- in
- FEMS Microbiology Reviews
- volume
- 15
- pages
- 17 pages
- publisher
- Oxford University Press
- external identifiers
-
- scopus:0027971955
- ISSN
- 1574-6976
- language
- English
- LU publication?
- no
- id
- a9bff090-d86a-4fb3-9560-ed80b093a957
- date added to LUP
- 2016-09-13 10:56:24
- date last changed
- 2021-03-07 06:57:01
@article{a9bff090-d86a-4fb3-9560-ed80b093a957,
abstract = {{Recent research on the process of biological phosphorus removal in lab-scale treatment systems has indicated that: (i) the development of an actively poly?-accumulating bacterial community after the introduction of an anaerobic period may take at least 4 months; (ii) up to 80% of all aerobic bacteria isolated from these communities are able to accumulate polyP; (iii) polyP synthesized by the bacterial communities of lab-scale treatment systems is probably mainly low polymeric, not exceeding 20 P-residues, and this polyP is rapidly degraded during the anaerobic period; (iv) the enzymatic hydrolysis of polyP under anaerobic conditions is accompanied by PHB formation from exogenous acetate, reducing equivalents are provided by the degradation of carbohydrates; and (v) nitric oxide inhibits the release of phosphate under anaerobic conditions in Renpho and F&D sludges. Bacteria belonging to the genus Acinetobacter occur in a wide variety of activated sludges in which enhanced biological phosphate remol is observed. A. johnsonii 210A was studied in detail with respect to the elemental composition of polyP granules, the enzymatic synthesis and degradation of polyP, the regulation of polyP metabolism, and the transport of phosphate. A. johnsonii 210A reflects activated sludge in a number of ways as far as polyP metabolism is concerned but its polyP is highly polymeric and the phosphate efflux rate under anaerobic conditions is relatively low and not increased by exogenous acetate. In addition to Acinetobacter, other polyP-accumulating microorganisms may be involved in biological phosphorus removal. The isolation of polyP-accumulating denitrifying bacteria may well have interesting implications for a new process design in wastewater treatment systems. Further studies on the enzymes involved in polyP biosynthesis and on the uptake and efflux systems of phosphate, potassium, magnesium and lower fatty acids in pure cultures will enlarge our insight in the energetics of the metabolism of polyP. In addition, the regulation of the metabolism of polyP-accumulating organisms needs to be studied in more detail.}},
author = {{Kortstee, GJJ and Appeldoorn, KJ and Bonting, CFC and van Niel, Ed and van Veen, HW}},
issn = {{1574-6976}},
keywords = {{Phophorus removal; Acinetobacter; Polyphosphate; Phosphate transport}},
language = {{eng}},
pages = {{137--153}},
publisher = {{Oxford University Press}},
series = {{FEMS Microbiology Reviews}},
title = {{Biology of polyphosphate-accumulating bacteria involved in enhanced biological phosphorus removal}},
url = {{https://lup.lub.lu.se/search/files/12160015/Kortsteeetal1994FEMSMR15_137.pdf}},
volume = {{15}},
year = {{1994}},
}