A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Biological Phosphate Uptake and Release: Effect of pH and Magnesium Ions
Enhanced biological phosphorus removal (EBPR) is based on poly‐phosphate accumulating organisms' (PAOs) unique features of “luxury” phosphate uptake during aerobic conditions and phosphate release in anaerobic conditions. It is believed that poly‐phosphate accumulation is accompanied by the uptake and accumulation of potassium ions (K +) and magnesium ions (Mg 2+). The release of phosphate under anaerobic conditions is also accompanied by the release of both cations. The objective of this research was to evaluate the effect of pH and Mg 2+ on the biological phosphate uptake and release behavior of activated sludge mixed liquor during aeration and sedimentation. Research results indicate that Mg 2+, supplied either by magnesium chloride (MgCl 2) or magnesium hydroxide [Mg(OH) 2], stimulated phosphate uptake during the aeration period, while pH increase, caused by the application of Mg(OH) 2, enhanced phosphate release during the sedimentation period. It is also noted in our experiments with MgCl 2 that Mg 2+ slightly inhibited anaerobic phosphate release. Water Environ. Res.,
Biological Phosphate Uptake and Release: Effect of pH and Magnesium Ions
Enhanced biological phosphorus removal (EBPR) is based on poly‐phosphate accumulating organisms' (PAOs) unique features of “luxury” phosphate uptake during aerobic conditions and phosphate release in anaerobic conditions. It is believed that poly‐phosphate accumulation is accompanied by the uptake and accumulation of potassium ions (K +) and magnesium ions (Mg 2+). The release of phosphate under anaerobic conditions is also accompanied by the release of both cations. The objective of this research was to evaluate the effect of pH and Mg 2+ on the biological phosphate uptake and release behavior of activated sludge mixed liquor during aeration and sedimentation. Research results indicate that Mg 2+, supplied either by magnesium chloride (MgCl 2) or magnesium hydroxide [Mg(OH) 2], stimulated phosphate uptake during the aeration period, while pH increase, caused by the application of Mg(OH) 2, enhanced phosphate release during the sedimentation period. It is also noted in our experiments with MgCl 2 that Mg 2+ slightly inhibited anaerobic phosphate release. Water Environ. Res.,
Biological Phosphate Uptake and Release: Effect of pH and Magnesium Ions
Wu, Qingzhong (author) / Bishop, Paul L. (author) / Keener, Tim C. (author)
Water Environment Research ; 78 ; 196-201
2006-02-01
6 pages
Article (Journal)
Electronic Resource
English
Biological Nutrient Removal by Enhancing Anoxic Phosphate Uptake
| British Library Online Contents | 2000
Optimizing the dimensions of magnesium ammonium phosphate to maximize its ammonia uptake ability
| British Library Online Contents | 2013