Title |
Phosphorus recovery from wastewater through microbial processes
|
---|---|
Published in |
Current Opinion in Biotechnology, August 2012
|
DOI | 10.1016/j.copbio.2012.08.001 |
Pubmed ID | |
Authors |
Zhiguo Yuan, Steven Pratt, Damien J Batstone |
Abstract |
Waste streams offer a compelling opportunity to recover phosphorus (P). 15-20% of world demand for phosphate rock could theoretically be satisfied by recovering phosphorus from domestic waste streams alone. For very dilute streams (<10 mg PL(-1)), including domestic wastewater, it is necessary to concentrate phosphorus in order to make recovery and reuse feasible. This review discusses enhanced biological phosphorus removal (EBPR) as a key technology to achieve this. EBPR relies on polyphosphate accumulating organisms (PAOs) to take up phosphorus from waste streams, so concentrating phosphorus in biomass. The P-rich biosolids can be either directly applied to land, or solubilized and phosphorus recovered as a mineral product. Direct application is effective, but the product is bulky and carries contaminant risks that need to be managed. Phosphorus release can be achieved using either thermochemical or biochemical methods, while recovery is generally by precipitation as struvite. We conclude that while EBPR technology is mature, the subsequent phosphorus release and recovery technologies need additional development. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 1 | 100% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Denmark | 3 | <1% |
United States | 3 | <1% |
Brazil | 2 | <1% |
Malaysia | 2 | <1% |
Spain | 2 | <1% |
Singapore | 1 | <1% |
Australia | 1 | <1% |
Germany | 1 | <1% |
Canada | 1 | <1% |
Other | 0 | 0% |
Unknown | 603 | 97% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 124 | 20% |
Student > Master | 120 | 19% |
Researcher | 60 | 10% |
Student > Bachelor | 59 | 10% |
Student > Doctoral Student | 36 | 6% |
Other | 64 | 10% |
Unknown | 156 | 25% |
Readers by discipline | Count | As % |
---|---|---|
Environmental Science | 130 | 21% |
Engineering | 113 | 18% |
Agricultural and Biological Sciences | 62 | 10% |
Chemistry | 35 | 6% |
Biochemistry, Genetics and Molecular Biology | 25 | 4% |
Other | 66 | 11% |
Unknown | 188 | 30% |