Production of technical grade phosphoric acid from incinerator sewage sludge ash (ISSA)

Donatello, Shane; Tong, Danlu; Cheeseman, Christopher R.

doi:10.1016/j.wasman.2010.04.009

Cited by 158 publications

(114 citation statements)

References 37 publications

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“…For Incineration SSA, hematite (Fe2O3) and anhydrite (CaSO4) were also identified. These phases were respectively identified in other incineration (Franz, 2008;Donatello et al 2010;Ottosen et al 2014;Li et al 2015) and gasification SSA (Hernandez et al 2011;Gil-Lalaguna et al 2015).The presence of Fe2O3 in incineration SSA is due to the reaction of iron phosphate with lime, and the consequent formation of more acid-soluble calcium phosphate (Martinez et al 2014;Li et al 2015). In contrast, the lack of hematite in Gasification SSA could indicate the presence of FePO4, although it was not identified neither in the XRPD analyses of the present work nor in previous studies on gasification SSA (Hernandez et al 2011;Gil-Lalaguna et al 2015).…”

Section: Ssa Characterisationmentioning

confidence: 89%

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Comparison of phosphorus recovery from incineration and gasification sewage sludge ash

Viader

Jensen

Ottosen

et al. 2016

Water Science and Technology

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Incineration of sewage sludge is a common practice in many western countries. Gasification is an attractive option because of its high energy efficiency and flexibility in the usage of the produced gas. However, they both unavoidably produce sewage sludge ashes, a material which is rich in phosphorus, but that it is commonly landfilled or used in construction materials. With current uncertainty in phosphate rock supply, phosphorus recovery from sewage sludge ashes has become interesting. In the present work, ashes from incineration and gasification of the same sewage sludge were compared in terms of phosphorus extractability using electrodialytic methods. The results show that comparable recovery rates of phosphorus were achieved with a single electrodialytic step for incineration ashes and a sequential combination of two electrodialytic steps for gasification ashes, which was due to a higher influence of iron and/or aluminium in phosphorus solubility for the latter. A product with lower level of metallic impurities and comparable to wet process phosphoric acid was eventually obtained from gasification ashes. Thus, gasification becomes an interesting alternative to incineration also in terms of phosphorus separation.

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Section: Ssa Characterisationmentioning

confidence: 89%

“…Previous researches focused on the characterisation of SSA from incineration (Franz 2008;Donatello et al 2010;L. M. Ottosen et al 2013) or gasification (Hernandez et al 2011;Martinez et al 2014;Parés Viader et al 2015), including element composition and acid extraction of P and other elements.…”

Section: Introductionmentioning

confidence: 99%

Comparison of phosphorus recovery from incineration and gasification sewage sludge ash

Viader

Jensen

Ottosen

et al. 2016

Water Science and Technology

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“…These methods include acid and base treatment (Oliver and Carey, 1976;Levlin et al, 2003;Donatello et al, 2010;Ottosen et al, 2013), thermo (chemical) treatments (Adam et al, 2009) and electrodialytic remediation (Sturm et al, 2010). Electrodialysis (ED) is a treatment method mostly applied for remediation of heavy metal polluted soils, industrial effluents and more recently stirred suspensions such as harbor sediments (Kirkelund et al, 2009) and suspensions of dried sewage sludge and bio-ash (Ottosen et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Comparison of two different electrodialytic cells for separation of phosphorus and heavy metals from sewage sludge ash

2015

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“…Prior studies showed that SSA can be used in brick manufacture (9)(10)(11), as fines in mortars (12,13), to prepare synthetic aggregate (14)(15)(16)(17) and as aggregate in hot mix asphalt (18). SSA has likewise been used to produce phosphoric acid (19). Nonetheless, one of its most promising applications is as an admixture in construction mortars or concretes.…”

Section: Introductionmentioning

confidence: 99%

Potential use of sewage sludge ash (SSA) as a cement replacement in precast concrete blocks

Pérez-Carrión¹,

Baeza-Brotons²,

Payá³

et al. 2014

Mater. construcc.

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ABSTRACT:The present study explored the technological feasibility of re-using sewage sludge ash (SSA) as a Portland cement replacement in commercially manufactured pre cast concrete blocks. The blocks analysed were made to the guidelines laid down in Spain's National Plan for Waste Water Treatment Plant Sludge, 2001Sludge, -2006, and European Union specifications (CE marking) for such products. Performance was compared in three families of blocks, with 0, 10 and 20% SSA. The findings proved that SSA is apt for pre cast concrete block manufacture and that, in addition to the economic and environmental benefits afforded, its use would improve certain of the properties of conventional block. RESUMEN: Uso potencial de ceniza de lodo de depuradora (CLD) como sustitución de cemento en bloques dehormigón prefabricados.El objetivo de esta investigación es estudiar el uso potencial de las cenizas de lodos de depuradora (CLD), como sustitución del cemento Portland en bloques de hormigón prefabricados, de forma que se pueda lograr una revalorización de este material de desecho mediante este procedimiento. La metodología utilizada en este trabajo se rige por las directrices del Plan Nacional Español de Lodos de Aguas Residuales de 2001-2006, y por las exigencias del Consejo Europeo (marcado CE), que es obligatorio para este tipo de productos. Se han utilizado dos niveles de sustitución de cemento (10% y 20%), y todos los resultados han sido referidos a las muestras control. Los resultados obtenidos muestran que es posible utilizar una sustitución parcial del cemento por CLD, en la fabricación de bloques de hormigón prefabricados, y por lo tanto, se pueden conseguir beneficios económicos y ambientales, así como la mejora de una serie de propiedades.

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Production of technical grade phosphoric acid from incinerator sewage sludge ash (ISSA)

Cited by 158 publications

References 37 publications

Comparison of phosphorus recovery from incineration and gasification sewage sludge ash

Comparison of phosphorus recovery from incineration and gasification sewage sludge ash

Comparison of two different electrodialytic cells for separation of phosphorus and heavy metals from sewage sludge ash

Potential use of sewage sludge ash (SSA) as a cement replacement in precast concrete blocks

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