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Nutrient management via struvite precipitation and recovery from various agroindustrial wastewaters: Process feasibility and struvite quality

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Nutrient management via struvite precipitation and recovery from various agroindustrial wastewaters : Process feasibility and struvite quality. / Taddeo, Raffaele; Honkanen, Mari; Kolppo, Kari; Lepistö, Raghida.

julkaisussa: Journal of Environmental Management, Vuosikerta 212, 15.04.2018, s. 433-439.

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Taddeo, Raffaele ; Honkanen, Mari ; Kolppo, Kari ; Lepistö, Raghida. / Nutrient management via struvite precipitation and recovery from various agroindustrial wastewaters : Process feasibility and struvite quality. Julkaisussa: Journal of Environmental Management. 2018 ; Vuosikerta 212. Sivut 433-439.

Bibtex - Lataa

@article{732d904bec0e4ace9662f653d2c3481d,
title = "Nutrient management via struvite precipitation and recovery from various agroindustrial wastewaters: Process feasibility and struvite quality",
abstract = "Improving environmental protection and finding sustainable and renewable resources of nutrients are core issues in circular bioeconomy. Thus, this study evaluated the efficiency of recovering struvite, MgNH4PO4·6H2O, from different agro-industrial wastewaters (four highly loaded reject waters of anaerobically co-digested agro-industrial waste and a raw swine slurry) and assessed the quality of recovered struvite crystals and their reusability as fertilizer. The efficiency of crystallization (Ec 40–80{\%}) and amount of struvite in the precipitate (Pp 55–94{\%}) highly varied due to the characteristics of influent wastewaters, particularly to the content of competing elements, such as alkaline and heavy metals and total solids (TS). In particular, Ec (94, 75, 61{\%}) and Pp (76, 66, 48{\%}) decreased at increasing TS (0.57, 0.73, 0.99{\%}), demonstrating the hindering effect of solid content on struvite recovery and quality. According to X-ray diffraction analysis, the structure of all isolated samples corresponded to crystalline, orthorhombic struvite, which exhibited high purity (32–48 g/kgd N, 114–132 g/kgd P, and 99–116 g/kgd Mg) containing only a few foreign elements, whose amount depended on the characteristics of the influent wastewater. All struvite contained other plant macronutrients (K, Ca) and many micronutrients (Fe, Na, Cu, Mn, Co, Zn) that further enhance its agronomic value. Therefore, this study showed that struvite can be successfully recovered from a wide range of highly loaded agroindustrial wastewaters, and that the quality of the recovered struvite could be suitable for reuse in agriculture.",
keywords = "Crystalline purity, Heavy metals, Nutrient recycling, Solid content, Sustainable fertilizer",
author = "Raffaele Taddeo and Mari Honkanen and Kari Kolppo and Raghida Lepist{\"o}",
note = "EXT={"}Kolppo, Kari{"}",
year = "2018",
month = "4",
day = "15",
doi = "10.1016/j.jenvman.2018.02.027",
language = "English",
volume = "212",
pages = "433--439",
journal = "Journal of Environmental Management",
issn = "0301-4797",
publisher = "Elsevier",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Nutrient management via struvite precipitation and recovery from various agroindustrial wastewaters

T2 - Process feasibility and struvite quality

AU - Taddeo, Raffaele

AU - Honkanen, Mari

AU - Kolppo, Kari

AU - Lepistö, Raghida

N1 - EXT="Kolppo, Kari"

PY - 2018/4/15

Y1 - 2018/4/15

N2 - Improving environmental protection and finding sustainable and renewable resources of nutrients are core issues in circular bioeconomy. Thus, this study evaluated the efficiency of recovering struvite, MgNH4PO4·6H2O, from different agro-industrial wastewaters (four highly loaded reject waters of anaerobically co-digested agro-industrial waste and a raw swine slurry) and assessed the quality of recovered struvite crystals and their reusability as fertilizer. The efficiency of crystallization (Ec 40–80%) and amount of struvite in the precipitate (Pp 55–94%) highly varied due to the characteristics of influent wastewaters, particularly to the content of competing elements, such as alkaline and heavy metals and total solids (TS). In particular, Ec (94, 75, 61%) and Pp (76, 66, 48%) decreased at increasing TS (0.57, 0.73, 0.99%), demonstrating the hindering effect of solid content on struvite recovery and quality. According to X-ray diffraction analysis, the structure of all isolated samples corresponded to crystalline, orthorhombic struvite, which exhibited high purity (32–48 g/kgd N, 114–132 g/kgd P, and 99–116 g/kgd Mg) containing only a few foreign elements, whose amount depended on the characteristics of the influent wastewater. All struvite contained other plant macronutrients (K, Ca) and many micronutrients (Fe, Na, Cu, Mn, Co, Zn) that further enhance its agronomic value. Therefore, this study showed that struvite can be successfully recovered from a wide range of highly loaded agroindustrial wastewaters, and that the quality of the recovered struvite could be suitable for reuse in agriculture.

AB - Improving environmental protection and finding sustainable and renewable resources of nutrients are core issues in circular bioeconomy. Thus, this study evaluated the efficiency of recovering struvite, MgNH4PO4·6H2O, from different agro-industrial wastewaters (four highly loaded reject waters of anaerobically co-digested agro-industrial waste and a raw swine slurry) and assessed the quality of recovered struvite crystals and their reusability as fertilizer. The efficiency of crystallization (Ec 40–80%) and amount of struvite in the precipitate (Pp 55–94%) highly varied due to the characteristics of influent wastewaters, particularly to the content of competing elements, such as alkaline and heavy metals and total solids (TS). In particular, Ec (94, 75, 61%) and Pp (76, 66, 48%) decreased at increasing TS (0.57, 0.73, 0.99%), demonstrating the hindering effect of solid content on struvite recovery and quality. According to X-ray diffraction analysis, the structure of all isolated samples corresponded to crystalline, orthorhombic struvite, which exhibited high purity (32–48 g/kgd N, 114–132 g/kgd P, and 99–116 g/kgd Mg) containing only a few foreign elements, whose amount depended on the characteristics of the influent wastewater. All struvite contained other plant macronutrients (K, Ca) and many micronutrients (Fe, Na, Cu, Mn, Co, Zn) that further enhance its agronomic value. Therefore, this study showed that struvite can be successfully recovered from a wide range of highly loaded agroindustrial wastewaters, and that the quality of the recovered struvite could be suitable for reuse in agriculture.

KW - Crystalline purity

KW - Heavy metals

KW - Nutrient recycling

KW - Solid content

KW - Sustainable fertilizer

U2 - 10.1016/j.jenvman.2018.02.027

DO - 10.1016/j.jenvman.2018.02.027

M3 - Article

VL - 212

SP - 433

EP - 439

JO - Journal of Environmental Management

JF - Journal of Environmental Management

SN - 0301-4797

ER -