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Efficacy of selected phosphorus sorbing materials (PSMs) to enhance the orthophosphate sorption capacity of filter socks
Author(s) -
Cooke A. L.,
Simmons R. W.,
Rickson R. J.,
Sakrabani R.
Publication year - 2021
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/wej.12671
Subject(s) - sediment , sorption , phosphorus , ferrihydrite , surface runoff , environmental science , wastewater , environmental remediation , environmental chemistry , chemistry , environmental engineering , pulp and paper industry , contamination , geology , adsorption , organic chemistry , paleontology , ecology , engineering , biology
Agricultural phosphate (PO 4 3− ) is a major cause of water quality compliance failures. Filter socks (FS) are a sediment‐control method proven to be effective at removing sediment and sediment bound‐P. Within the water and wastewater treatment industries phosphorous sorbing materials (PSMs) are widely used to remove reactive PO 4 3− . Combining PSMs with FS provides an opportunity to concomitantly remove sediment, sediment bound‐P and PO 4 3− from agricultural runoff. A column experiment was undertaken to evaluate the efficacy of selected PSMs to remove PO 4 3− across a range of PO 4 3− concentrations (0.08, 0.26 and 1.3 mg/L) and contrasting FS fill media (PAS 100 Compost and Woodchip). The results indicate that Ca‐enriched ferrihydrite removed up to 99% of PO 4 3− , and was the only PSM to reduce PO 4 3− to below the target value of <0.05 mg/L. An initial cost‐benefit analysis indicates that PSM‐enhanced FS are a viable option to remove PO 4 3− from agricultural runoff.