Precipitação química de estruvita: Recuperação de nutrientes em reator cônico de leito fluidizado utilizando magnésia industrial de baixo custo

Samuel Rodrigues Castro; Dafne Crutchik; Juan Manuel Garrido; Liséte Celina Lange

doi:10.1590/S1413-41522015020000133827

Precipitação química de estruvita: Recuperação de nutrientes em reator cônico de leito fluidizado utilizando magnésia industrial de baixo custo

Translated title of the contribution: Chemical precipitation of struvite: Nutrients recovery in conic fluidized bed reactor using a low-cost industrial magnesia compound

Samuel Rodrigues Castro
, Dafne Crutchik
, Juan Manuel Garrido
, Liséte Celina Lange

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The physico-chemical process of struvite precipitation is a technique that demonstrates a high potential in nutrients recovery from different kinds of wastewaters. This study aimed to evaluate the use of a low cost industrial compound with high magnesia content as alternative reagent source of magnesium ions and alkalinity required for precipitation. It was a strategy to turn the process economically viable and reduce the chemical costs. Mg(OH)₂ slurries were obtained and evaluated regarding the nutrients recovery from a synthetic wastewater rich in NH₄⁺-N and PO₄³-P and the quality of the generated crystals with the identification of the mineral of interest – the struvite. The experiment was performed in laboratory scale using a conic fluidized bed reactor in a semi-continuous operation. The proper pH control (8.0–8.5) by the automated addition of Mg(OH)₂ slurry allowed considerable PO₄³-P removal equal to 93.5%. The recovered solids from the process showed purity of approximately 84% of struvite.

Translated title of the contribution	Chemical precipitation of struvite: Nutrients recovery in conic fluidized bed reactor using a low-cost industrial magnesia compound
Original language	Portuguese
Pages (from-to)	259-268
Number of pages	10
Journal	Engenharia Sanitaria e Ambiental
Volume	20
Issue number	2
DOIs	https://doi.org/10.1590/S1413-41522015020000133827
State	Published - 1 Apr 2015
Externally published	Yes

Keywords

Chemical precipitation
Conic fluidized bed reactor
Industrial magnesia compound
Low-cost reagent
Nutrients recovery
Struvite

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10.1590/S1413-41522015020000133827

Cite this

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title = "Precipita{\c c}{\~a}o qu{\'i}mica de estruvita: Recupera{\c c}{\~a}o de nutrientes em reator c{\^o}nico de leito fluidizado utilizando magn{\'e}sia industrial de baixo custo",

abstract = "The physico-chemical process of struvite precipitation is a technique that demonstrates a high potential in nutrients recovery from different kinds of wastewaters. This study aimed to evaluate the use of a low cost industrial compound with high magnesia content as alternative reagent source of magnesium ions and alkalinity required for precipitation. It was a strategy to turn the process economically viable and reduce the chemical costs. Mg(OH)2 slurries were obtained and evaluated regarding the nutrients recovery from a synthetic wastewater rich in NH4+-N and PO43-P and the quality of the generated crystals with the identification of the mineral of interest – the struvite. The experiment was performed in laboratory scale using a conic fluidized bed reactor in a semi-continuous operation. The proper pH control (8.0–8.5) by the automated addition of Mg(OH)2 slurry allowed considerable PO43-P removal equal to 93.5\%. The recovered solids from the process showed purity of approximately 84\% of struvite.",

keywords = "Chemical precipitation, Conic fluidized bed reactor, Industrial magnesia compound, Low-cost reagent, Nutrients recovery, Struvite",

author = "Castro, \{Samuel Rodrigues\} and Dafne Crutchik and Garrido, \{Juan Manuel\} and Lange, \{Lis{\'e}te Celina\}",

note = "Publisher Copyright: {\textcopyright} 2015, ABES - Associacao Brasileira de Engenharia Sanitaria e Ambiental. All rights resevred.",

year = "2015",

month = apr,

day = "1",

doi = "10.1590/S1413-41522015020000133827",

language = "Portuguese",

volume = "20",

pages = "259--268",

journal = "Engenharia Sanitaria e Ambiental",

issn = "1413-4152",

publisher = "ABES - Associacao Brasileira de Engenharia Sanitaria e Ambiental",

number = "2",

}

Precipitação química de estruvita: Recuperação de nutrientes em reator cônico de leito fluidizado utilizando magnésia industrial de baixo custo. / Castro, Samuel Rodrigues; Crutchik, Dafne; Garrido, Juan Manuel et al.
In: Engenharia Sanitaria e Ambiental, Vol. 20, No. 2, 01.04.2015, p. 259-268.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Precipitação química de estruvita

T2 - Recuperação de nutrientes em reator cônico de leito fluidizado utilizando magnésia industrial de baixo custo

AU - Castro, Samuel Rodrigues

AU - Crutchik, Dafne

AU - Garrido, Juan Manuel

AU - Lange, Liséte Celina

PY - 2015/4/1

Y1 - 2015/4/1

N2 - The physico-chemical process of struvite precipitation is a technique that demonstrates a high potential in nutrients recovery from different kinds of wastewaters. This study aimed to evaluate the use of a low cost industrial compound with high magnesia content as alternative reagent source of magnesium ions and alkalinity required for precipitation. It was a strategy to turn the process economically viable and reduce the chemical costs. Mg(OH)2 slurries were obtained and evaluated regarding the nutrients recovery from a synthetic wastewater rich in NH4+-N and PO43-P and the quality of the generated crystals with the identification of the mineral of interest – the struvite. The experiment was performed in laboratory scale using a conic fluidized bed reactor in a semi-continuous operation. The proper pH control (8.0–8.5) by the automated addition of Mg(OH)2 slurry allowed considerable PO43-P removal equal to 93.5%. The recovered solids from the process showed purity of approximately 84% of struvite.

AB - The physico-chemical process of struvite precipitation is a technique that demonstrates a high potential in nutrients recovery from different kinds of wastewaters. This study aimed to evaluate the use of a low cost industrial compound with high magnesia content as alternative reagent source of magnesium ions and alkalinity required for precipitation. It was a strategy to turn the process economically viable and reduce the chemical costs. Mg(OH)2 slurries were obtained and evaluated regarding the nutrients recovery from a synthetic wastewater rich in NH4+-N and PO43-P and the quality of the generated crystals with the identification of the mineral of interest – the struvite. The experiment was performed in laboratory scale using a conic fluidized bed reactor in a semi-continuous operation. The proper pH control (8.0–8.5) by the automated addition of Mg(OH)2 slurry allowed considerable PO43-P removal equal to 93.5%. The recovered solids from the process showed purity of approximately 84% of struvite.

KW - Chemical precipitation

KW - Conic fluidized bed reactor

KW - Industrial magnesia compound

KW - Low-cost reagent

KW - Nutrients recovery

KW - Struvite

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DO - 10.1590/S1413-41522015020000133827

M3 - Article

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IS - 2

ER -

Precipitação química de estruvita: Recuperação de nutrientes em reator cônico de leito fluidizado utilizando magnésia industrial de baixo custo

Abstract

Keywords

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