Modelling of phosphorus removal from aqueous and wastewater samples using ferric iron

Fytianos, K.; Voudrias, Evangelos A.; Raikos, Νikolaos

doi:10.1016/s0269-7491(98)00007-4

Cited by 177 publications

(88 citation statements)

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“…Independente destes elevados desempenhos, o lodo produzido é de difícil reúso, sendo normalmente descartado como resíduo sólido industrial em aterros sanitários controlados, havendo severas limitações com respeito à contaminação de águas subterrâneas (Fytianos et al, 1998;Özacar and Şengil, 2003).…”

Section: X=fe Ou Alunclassified

A tecnologia de remoção de fósforo: gerenciamento do elemento em resíduos industriais

Maroneze¹,

Zepka

Vieira

et al. 2014

Rev. ambiente água

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RESUMOAs elevadas concentrações de fósforo em águas residuárias industriais é uma das principais causas da eutrofização de corpos hídricos receptores, havendo em virtude disto, uma crescente preocupação com o gerenciamento das cargas de fósforo dos efluentes industriais. Além dos aspectos de contenção ambiental, é estrategicamente desejável que os processos de tratamento permitam a recuperação e o reúso deste elemento que é considerado de elevada demanda biológica. Neste sentido, esta revisão objetiva descrever e analisar criticamente o estado atual das tecnologias de gerenciamento de fósforo em águas residuais industriais, com ênfase no reúso do elemento. As tecnologias consideradas incluem abordagens químicas (precipitação química e adsorção), biológicas (sistemas bacterianos, uso macroalgas e microalgas) além de técnicas de fertirrigação.Palavras-chave: espécies fosforadas, eutrofização, tecnologias de tratamento, reuso. Phosphorus removal technology: Management of the element in industrial waste ABSTRACTHigh phosphorus concentrations in industrial wastewaters is one of the main causes of the eutrophication of water bodies, leading to a growing concern with the management of phosphorus loads from industrial wastewaters. In addition to the environmental aspects of containment, it is strategically desirable that the treatment processes enable the recovery and reuse of this element, which is considered to be of high biological demand. For these reasons, this review describes and critically analyzes the current state of phosphorus management technologies for industrial wastewaters, with emphasis on the reuse of the element. The

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A tecnologia de remoção de fósforo: gerenciamento do elemento em resíduos industriais

Maroneze¹,

Zepka

Vieira

et al. 2014

Rev. ambiente água

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“…4 Although the chemical precipitation method and biological uptake method both can be used to remove the TP from the wastewater, the biological uptake method usually cannot achieve a satisfactory TP removal efficiency because low influent COD has been a universal problem for most of the WWTPs in China. 5 Besides this, the phosphorus removal is often sacrificed to ensure effective denitrification nitrogen removal at the condition of limited carbon sources in wastewater. 6 This is because, when compared to nitrogen, phosphorus can be more conveniently and efficiently removed by simple chemical methods.…”

Section: Introductionmentioning

confidence: 99%

Applicability and Optimal Parameters Analysis for Chemical Phosphorus Removal in a Modified Carrousel Oxidation Ditch

Tao

Zhao

2017

Kem. Ind.

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“…In reality, however, the relationship between the metal salt dose and the phosphorus to be removed is not stoichiometric (Fytianos et al, 1998;Jenkins et al, 1971). The extent of precipitation, and the products formed, is a function of temperature, metal salt dose, pH (Singer, 1972;Yeoman et al, 1988), dissolved oxygen and redox potential (Thistleton et al, 2001).…”

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confidence: 99%

“…The proportion of OH À compared to PO 4 3À increases with increasing pH and iron : phosphorus ratio (Fytianos et al, 1998). (b) Amorphous Fe(III) hydroxide precipitates to which PO 4 3À -P ions are adsorbed (He et al, 1996;Jiang and Graham, 1998;Thistleton et al, 2002;Yeoman et al, 1988).…”

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confidence: 99%

Inorganic profiles of chemical phosphorus removal sludge

Carliell-Marquet

Smith

Oikonomidis

et al. 2010

Proceedings of the Institution of Civil Engineers - Water Manag

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Iron dosing is commonly used to remove phosphorus from wastewater but little is known about how this changes the distribution of iron, phosphorus, calcium, magnesium and trace metals in activated and digested sludge. This research compared the inorganic profiles of sludge from full-scale processes (activated sludge and anaerobic digestion) with and without iron dosing, with the aim of identifying changes in inorganic distribution resulting from iron dosing. Sludge phosphorus and metals were fractionated using sequential chemical extraction. Bioavailable iron was lower in iron-dosed activated sludge, as was bioavailable phosphorus (6·5 g/kg compared with 1·8 g/kg), with most of the iron and phosphorus bound as iron-hydroxy-phosphates. Similar results were found for anaerobically digested sludge after iron dosing; iron and phosphorus in the sludge increased by 4 and 1·35 times, respectively, but bioavailability was decreased. The ratio of chemical oxygen demand to bioavailable phosphorus in the digester was 840 : 1 after iron dosing. By contrast, calcium, magnesium, copper and zinc were increasingly bioavailable in the digester after iron dosing. The reported changes were linked to the iron content of the sludge; hence the level of iron dosing is key to minimising changes in sludge inorganic profiles.

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Modelling of phosphorus removal from aqueous and wastewater samples using ferric iron

Cited by 177 publications

References 2 publications

A tecnologia de remoção de fósforo: gerenciamento do elemento em resíduos industriais

A tecnologia de remoção de fósforo: gerenciamento do elemento em resíduos industriais

Applicability and Optimal Parameters Analysis for Chemical Phosphorus Removal in a Modified Carrousel Oxidation Ditch

Inorganic profiles of chemical phosphorus removal sludge

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