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Precipitação de estruvita em lixiviado de compostagem para uso como fertilizante. Repositório Alice
INACIO, C. de T.; MORAES, A. da S. de; CAMPOS, D. V. B. de; VENEU, D. M.; RECH, I.; LEAL, M. A. de A..
Nutrient recovery from agro-industrial effluents as precipitate minerals for use as fertilizers in agriculture is a promising strategy to reach sustainability. Struvite precipitation (MgNH4PO4.6H2O) is one of the most studied methods for phosphorus (P) recovery from waste waters; its use as a slow-release fertilizer has been often tested. This method also allowed the potassium (K) recovery as K-struvite (MgKPO4 .6H2O). The leachate has been considered as a major threat of composting facilities to the environment - due to its high biochemical oxygen demand and nutrient content (K, N e P). The leachate from a composting of horse bedding manure and left vegetables from an agro-processing industry showed high content of K (2,256 mg L -1), and low levels of...
Tipo: Artigo de periódico Palavras-chave: Minerais de fosfato; Recuperação de nutrientes; Estrume animal; Nutrient recovery; Compostagem; Fosfato; Phosphate minerals; Animal manures; Composting.
Ano: 2022 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1142346
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HYDROPHOBIC MEMBRANE TECHNOLOGY FOR AMMONIA EXTRACTION FROM WASTEWATERS REA
KUNZ,AIRTON; MUKHTAR,SAQIB.
ABSTRACT Total Ammoniacal Nitrogen - TAN (NH3 + NH4+) in wastewaters cause environmental degradation concerns due to their negative impacts on air, soil and water. Several technologies are available for TAN removal from the wastewaters. One emerging technology is the use of hydrophobic membrane as non-destructive NH3 extraction. In this paper the authors discuss the uses of gas permeable membrane (GPM) and its physicochemical characteristics that influence gas mass transfer rate, diffusion and recovery mechanisms of NH3 from liquid sources (e.g. animal wastewater). Several aspects of NH3 extraction from liquid manure and other TAN generation sources using GPM technology as well as its applicability for NH3 mitigation from liquid effluents and possible...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ammonia; Separation; Wastewater; Nutrient recovery.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000200377
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