Digestion of wastewater pond microalgae and potential inhibition by alum and ammoniacal-N

Algae are produced in considerable quantities in oxidation ponds, and may negatively affect receiving waters when discharged at high concentration. Thus in some instances they require removal prior to effluent discharge, which may be enhanced using flocculants such as alum. Harvested algal biomass c...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 63(2011), 5 vom: 29., Seite 835-40
1. Verfasser: Sukias, J P S (VerfasserIn)
Weitere Verfasser: Craggs, R J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:Water science and technology : a journal of the International Association on Water Pollution Research
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Alum Compounds Carbon Dioxide 142M471B3J aluminum sulfate 34S289N54E Ammonia 7664-41-7 Methane OP0UW79H66
LEADER 01000caa a22002652 4500
001 NLM206710135
003 DE-627
005 20250212133459.0
007 cr uuu---uuuuu
008 231224s2011 xx |||||o 00| ||eng c
024 7 |a 10.2166/wst.2011.101  |2 doi 
028 5 2 |a pubmed25n0689.xml 
035 |a (DE-627)NLM206710135 
035 |a (NLM)21411930 
040 |a DE-627  |b ger  |c DE-627  |e rakwb 
041 |a eng 
100 1 |a Sukias, J P S  |e verfasserin  |4 aut 
245 1 0 |a Digestion of wastewater pond microalgae and potential inhibition by alum and ammoniacal-N 
264 1 |c 2011 
336 |a Text  |b txt  |2 rdacontent 
337 |a ƒaComputermedien  |b c  |2 rdamedia 
338 |a ƒa Online-Ressource  |b cr  |2 rdacarrier 
500 |a Date Completed 21.07.2011 
500 |a Date Revised 25.11.2016 
500 |a published: Print 
500 |a Citation Status MEDLINE 
520 |a Algae are produced in considerable quantities in oxidation ponds, and may negatively affect receiving waters when discharged at high concentration. Thus in some instances they require removal prior to effluent discharge, which may be enhanced using flocculants such as alum. Harvested algal biomass could be anaerobically digested to methane for use as a renewable energy source, however, alum, has been reported to inhibit anaerobic digestion. Psychrophilic (20°C) anaerobic digestion experiments showed a 13% reduction in methane production with 200 g m(-3) alum in the flocculated algae, and a 40% reduction at an alum concentration of 1600 g m(-3). Elevated ammoniacal-N concentrations (785 g NH(4)(+)-N m(-3)) also inhibited algal digestion at 20°C when using an inoculum of anaerobic bacteria from a mesophylic municipal wastewater sludge digester. However, anaerobic digestion using a bacterial inoculum from a psychrophilic piggery anaerobic pond (in which typical ammoniacal-N levels range between 200 and 2000 g NH(4)(+)-N m(-3)) were unaffected by elevated digester ammoniacal-N levels and methane production actually increased slightly at higher ammoniacal-N concentrations. Thus, selecting an anaerobic bacterial inoculum that is already adapted to high ammoniacal-N levels and the digestion temperature, such as that form an anaerobic pond treating piggery wastewater, may avoid ammonia inhibition of algal digestion 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 7 |a Alum Compounds  |2 NLM 
650 7 |a Carbon Dioxide  |2 NLM 
650 7 |a 142M471B3J  |2 NLM 
650 7 |a aluminum sulfate  |2 NLM 
650 7 |a 34S289N54E  |2 NLM 
650 7 |a Ammonia  |2 NLM 
650 7 |a 7664-41-7  |2 NLM 
650 7 |a Methane  |2 NLM 
650 7 |a OP0UW79H66  |2 NLM 
700 1 |a Craggs, R J  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Water science and technology : a journal of the International Association on Water Pollution Research  |d 1986  |g 63(2011), 5 vom: 29., Seite 835-40  |w (DE-627)NLM098149431  |x 0273-1223  |7 nnns 
773 1 8 |g volume:63  |g year:2011  |g number:5  |g day:29  |g pages:835-40 
856 4 0 |u http://dx.doi.org/10.2166/wst.2011.101  |3 Volltext 
912 |a GBV_USEFLAG_A 
912 |a SYSFLAG_A 
912 |a GBV_NLM 
912 |a GBV_ILN_350 
951 |a AR 
952 |d 63  |j 2011  |e 5  |b 29  |h 835-40