{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,20]],"date-time":"2026-09-20T00:29:08Z","timestamp":1789864148926,"version":"4.0.1"},"reference-count":30,"publisher":"IWA Publishing","issue":"7","content-domain":{"domain":["iwaponline.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2015,10,1]]},"abstract":"<jats:p>Phosphorus (P) recovery was carried out through struvite precipitation from urines. Human urine, however, contains not only high nutrients for plants, such as P and nitrogen, but also pharmaceuticals and hormones. In this work, effects of magnesium (Mg) dose (in terms of Mg:P ratio) on P recovery efficiency and pharmaceutical amounts contained in struvite were investigated. Batch-scale experiments of synthetic and human urines revealed that struvite precipitation formed more X-shaped crystals with an increased molar ratio of Mg:P, while the amount of pharmaceuticals (tetracycline, demeclocycline, and oxytetracycline) in struvite decreased with an increased molar ratio of Mg:P. The lowest pharmaceutical amounts in struvite were found at the Mg:P ratio of 2:1 from both samples. Moreover, the maximum P recovery efficiency, quantity and purity of struvite were found in the range of 1.21 to 2:1. It indicated that the molar ratio of Mg:P has a significant impact on struvite precipitation in terms of pharmaceutical amounts in struvite; morphology, quantity and purity of struvite; and P recovery.<\/jats:p>","DOI":"10.2166\/wst.2015.313","type":"journal-article","created":{"date-parts":[[2015,9,23]],"date-time":"2015-09-23T15:02:39Z","timestamp":1443020559000},"page":"1102-1110","update-policy":"https:\/\/doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":19,"title":["Effect of magnesium dose on amount of pharmaceuticals in struvite recovered from urine"],"prefix":"10.2166","volume":"72","author":[{"given":"Patiya","family":"Kemacheevakul","sequence":"first","affiliation":[{"name":"Department of Environmental Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, 126 Pracha-uthit Rd, Bangmod, Tungkru, Bangkok 10140, Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Surawut","family":"Chuangchote","sequence":"first","affiliation":[{"name":"The Joint Graduate School of Energy and Environment, King Mongkut's University of Technology Thonburi, 126 Pracha-uthit Rd, Bangmod, Tungkru, Bangkok 10140, Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sosuke","family":"Otani","sequence":"first","affiliation":[{"name":"Research Center for Environmental Quality Management, Kyoto University, 1-2 Yumihama, Otsu, Shiga 520-0811, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomonari","family":"Matsuda","sequence":"first","affiliation":[{"name":"Research Center for Environmental Quality Management, Kyoto University, 1-2 Yumihama, Otsu, Shiga 520-0811, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yoshihisa","family":"Shimizu","sequence":"first","affiliation":[{"name":"Research Center for Environmental Quality Management, Kyoto University, 1-2 Yumihama, Otsu, Shiga 520-0811, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"945","published-online":{"date-parts":[[2015,6,19]]},"reference":[{"issue":"1\u20132","key":"2020032801254783400_WST-EM15422R2C1","doi-asserted-by":"crossref","first-page":"23","DOI":"10.1016\/j.chroma.2005.04.013","article-title":"Complexities in tetracycline analysis\u2014chemistry, matrix extraction, cleanup, and liquid chromatography","volume":"1075","author":"Anderson","year":"2005","journal-title":"J. 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