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Zhang, M., Pan, M., Zhang, H., Lyu, T. 
ORCID: 0000-0001-5162-8103, Bi, L., Wang, L., Chen, J., Yao, C., Ali, J., Best, S., Ray, N. ORCID: 0000-0002-5188-4331 and Pan, G. ORCID: 0000-0003-0920-3018,
2019.
Synergistic recapturing of external and internal phosphorus for in situ eutrophication mitigation.
Water, 12 (2).
ISSN 2073-4441
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Abstract
In eutrophication management, many phosphorus (P) adsorbents have been developed to capture P at the laboratory scale. Existing P removal practice in freshwaters is limited due to the lack of assessment of the possibility and feasibility of controlling P level towards a very low level (such as 10 μg/L) in order to prevent the harmful algal blooms. In this study, a combined external and internal P control approach was evaluated in a simulated pilot-scale river-lake system. In total, 0.8 m 3 of simulated river water was continuously supplied to be initially treated by a P adsorption column filled with a granulated lanthanum/aluminium hydroxide composite (LAH) P adsorbent. At the outlet of the column (i.e., inlet of the receiving tanks), the P concentration decreased from 230 to 20 µ g/L at a flow rate of 57 L/day with a hydraulic loading rate of 45 m/d. In the receiving tanks (simulated lake), 90 g of the same adsorbent material was added into 1 m 3 water for further in situ treatment, which reduced and maintained the P concentration at 10 µ g/L for 5 days. The synergy of external and internal P recapture was demonstrated to be an effective strategy for maintaining the P concentration below 10 µ g/L under low levels of P water input. The P removal was not significantly affected by temperature (5-30 °C), and the treatment did not substantially alter the water pH. Along with the superior P adsorption capacity, less usage of LAH could lead to reduced cost for potation eutrophication control compared with other widely used P adsorbents.
| Item Type: | Journal article | ||||||
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| Publication Title: | Water | ||||||
| Creators: | Zhang, M., Pan, M., Zhang, H., Lyu, T., Bi, L., Wang, L., Chen, J., Yao, C., Ali, J., Best, S., Ray, N. and Pan, G. | ||||||
| Publisher: | MDPI | ||||||
| Date: | 18 December 2019 | ||||||
| Volume: | 12 | ||||||
| Number: | 2 | ||||||
| ISSN: | 2073-4441 | ||||||
| Identifiers: |
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| Divisions: | Schools > School of Animal, Rural and Environmental Sciences | ||||||
| Record created by: | Linda Sullivan | ||||||
| Date Added: | 19 Dec 2019 11:30 | ||||||
| Last Modified: | 16 Jan 2020 16:18 | ||||||
| URI: | https://irep.ntu.ac.uk/id/eprint/38892 |
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