STAVKOVA, Jana and Josef MAROUŠEK. Novel sorbent shows promising financial results on P recovery from sludge water. CHEMOSPHERE. OXFORD, ENGLAND: PERGAMON-ELSEVIER SCIENCE LTD, vol. 276, AUG 2021, p. nestránkováno, 8 pp. ISSN 0045-6535. 2021.
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Basic information
Original name Novel sorbent shows promising financial results on P recovery from sludge water
Authors STAVKOVA, Jana (guarantor) and Josef MAROUŠEK (203 Czech Republic, belonging to the institution).
Edition CHEMOSPHERE, OXFORD, ENGLAND, PERGAMON-ELSEVIER SCIENCE LTD, 2021, 0045-6535.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10401 Organic chemistry
Country of publisher United Kingdom of Great Britain and Northern Ireland
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/75081431:_____/21:00002080
Organization unit Institute of Technology and Business in České Budějovice
UT WoS 000648339700022
Keywords in English Wastewater management; Circular economy; Phosphorus; Bioeconomy; Techno-economic assessment
Tags PRI_a, RIV21, WOS
Changed by Changed by: Mgr. Nikola Petříková, učo 28324. Changed: 17/6/2021 09:52.
Abstract
For several decades, researchers have been struggling to obtain minimum phosphorus (P) capture costs to meet the parameters for discharging wastewater into the watercourse. Findings from ongoing practices suggest that the Modified University of Cape Town process is currently the cheapest P capture method in the USA, whereas struvite precipitation seems to be the most cost effective method in the rest of the developed world. P sorption via biochars is becoming widespread in developing countries because this technique allows for the turning of voluminous biowaste into fertilizer with soil improving properties. Nevertheless, the reliability of this technology fluctuates throughout the year according to biowaste characteristics. For the first time, it has been proposed to use broken cellulose casings, which are readily available in increasing quantities worldwide. The sorbent obtained was subsequently activated by calcium chloride (CaCl2), whose cost is irrelevant as it would be used for agronomical purposes anyway. Pilot scale experiments show that this novel sorbent is capable of capturing 31.8 kg P t−1 from sludge water that contains 52.5 mg of extractable P L−1. More importantly, it was reported that the novel sorbent captures P, mostly in calcium phosphates (CaP) forms (191.5 g CaP t−1), which are the most valuable for plant nutrition. Enough evidence was obtained to claim that the ongoing technological race to meet the P discharge standards at the lowest cost possible should also reflect the agronomic value of P to plant nutrition to increase its competitiveness.
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