Nitrogen recovery from a stabilized municipal landfill leachate

Iaconi, Claudio Di; Pagano, Michele; Ramadori, R.; López, Antonio

doi:10.1016/j.biortech.2009.10.013

Cited by 125 publications

(78 citation statements)

References 26 publications

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“…The pH range reported to be favourable for struvite precipitation varies from of 8-11 (Kabdasli et al, 2009). P recovery efficiency is generally high and often >90% (Table 1) with municipal wastewater averaging 95% (Pastor et al, 2010;Uysal et al, 2010) and landfill leachate (Iaconi et al, 2010), human urine (Ganrot et al, 2007) and carmine dye industry (Chimenos et al, 2003) wastewater processes reporting 100% recovery. Struvite also captures NH 4 + with recovery efficiency as high as 98% for municipal wastewater and semiconductor wastewater (Suschka and Poplawski, 2003;Kim et al, 2009 (Demirer et al, 2005;Zhao et al, 2010;Shen et al, 2011), swine manure (Burns et al, 2001(Burns et al, , 2003Nelson et al, 2003;Suzuki et al, 2007;Perera et al, 2007;Ryu and Lee, 2010;Liu et al, 2011;Zhang et al, 2012), poultry manure (Yetilmezsoy et al, 2009) and cattle urine (Prabhu and Mutnuri, 2014 The high P content of manure makes it a suitable source, however its available P fraction remains only in the range of 35% (poultry manure) to 63% (dairy manure) of total P (Barnett, 1994).…”

Section: +mentioning

confidence: 99%

“…Effluent generated in the anaerobic sludge digestion process of municipal wastewater (Uysal et al, 2010;Pastor et al, 2010;Latifian et al, 2012) ) (Turker and Celen, 1997;Uysal et al, 2010;Latifian et al, 2012), however, no NH 4 + supplementation has been reported. Fixation of P in wastewater sludge particles requires use of some pre-treatment methods (acidic, basic, microwave, enhanced biological phosphorus removal) to enhance struvite formation (Stark, 2005;Pan et al, 2006;Pastor et al, 2008 ) (Kim et al, 2006) supplementation of P salts is required for struvite precipitation (Li and Zhao, 2003;Iaconi et al, 2010). Urine can be used without any pre-treatment prior to P recovery.…”

Section: Municipal Wastementioning

confidence: 99%

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Phosphorus recovery as struvite from farm, municipal and industrial waste: Feedstock suitability, methods and pre-treatments

et al. 2016

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Global population growth requires intensification of agriculture, for which a sustainable supply of phosphorus (P) is essential. Since natural P reserves are diminishing, recovering P from wastes and residues is an increasingly attractive prospect, particularly as technical and economic potential in the area is growing. In addition to providing phosphorus for agricultural use, stripping P from waste residues and effluents lessens their nutrient loading prior to disposal. This paper critically reviews published methods for P recovery from waste streams (municipal, farm and industrial) with emphasis on struvite (MgNH 4 PO 4 6H 2 O) crystallization, including pretreatments to maximize recovery. Based on compositional parameters of a range of wastes, a Feedstock Suitability Index (FSI) was developed as a guide to inform *Manuscript Click here to view linked References researchers and operators of the relative potential for struivite production from each waste.

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Section: +mentioning

confidence: 99%

Section: Municipal Wastementioning

confidence: 99%

Phosphorus recovery as struvite from farm, municipal and industrial waste: Feedstock suitability, methods and pre-treatments

et al. 2016

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“…In this regard, the expense for chemicals consumption and for energy utilization during the decomposition phase were considered. Through an analysis of Italian industrial market of chemicals, the price of H 3 PO 4 (75%), MgCl 2 ·6H 2 O, HCl (32%), and NaOH (40%) can be assumed to be about 790 €/m 3 , 420 €/ton, 125 €/m 3 , and 250 €/m 3 , respectively, similar to those considered in other works [1]. On the basis of the operating conditions identified (n(N):n(Mg):n(P) = 1:1.2:1.2), phosphoric acid and magnesium chloride amounts of 7.4 L and 18.4 kg must be dosed for struvite precipitation.…”

Section: Economic Analysismentioning

confidence: 89%

“…The leachates generated as result of water infiltration and decomposition of organic matter in landfills of urban wastes are wastewaters with one of the highest polluting potentials [1][2][3][4][5]. Their uncontrolled disposal can produce severe deterioration of quality of soil and water bodies [4].…”

Section: Introductionmentioning

confidence: 99%

Ammonium Removal from Landfill Leachate by Means of Multiple Recycling of Struvite Residues Obtained through Acid Decomposition

et al. 2016

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Abstract:The treatment of landfill leachate, due to its great polluting load, is a very difficult task. In particular, the abatement of high ammonium concentrations represents one of the main issues. Among the available techniques, struvite precipitation is an effective method for the removal and recovery of NH 4 + load. However, due to the lack of phosphorus and magnesium amounts, the struvite formation results in an expensive process in the leachate treatment. To overcome this issue, in the present work, we developed a simple and suitable method for ammonium removal by the multiple recycling of struvite decomposition residues. In this regard, a procedure for acid dissolution of struvite, produced by using industrial grade reagents, was initially defined. The effect of pH, temperature, and acid type was investigated. The experimental results proved the effectiveness of both hydrochloric and acetic acid, which allow a high and selective release of ammonium at T = 50 • C and pH = 5.5. The multiple reuse of decomposition products, combined with the supplementation of a small quantity of phosphorus and magnesium at molar ratios of n(N):n(Mg):n(P) = 1:0.05:0.05, guarantees stable NH 4 + abatement of about 82%. The proposed process allows a cost saving of around to 74% and can be easily applied in industrial treatment plants.

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“…Digestate liquid fraction can be used to dilute high solid feedstock and re-fed to the digester and/or applied as irrigation water [48,63]. However, the accumulation of nitrogen due to liquid recirculation can lead to anaerobic biomass inhibition [64][65][66] and restricts land application directives limiting N spreading on lands [67,68].…”

Section: Digestate Liquid Fraction Treatmentmentioning

confidence: 99%