Improving the prediction of ammonium nitrogen removal through struvite precipitation

Zhou, Shaoqi; Wu, Yanyu

doi:10.1007/s11356-011-0520-6

Cited by 72 publications

(15 citation statements)

References 32 publications

(40 reference statements)

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“…Formation of struvite has been studied intensively in communal and industrial waste water. Not only struvite but other minerals coprecipitate as well (Lind et al 2000;Van Rensburg et al 2003;Ekama et al 2006;Ganrot et al 2007;De Graaff 2010;Wu and Zhou 2012). Examples from literature on animal slurries refer often to laboratory experiments (Szogi and Vanotti 2009;Shen et al 2012;Wahal et al 2011;Wendler Fernandes et al 2012;Shepherd, Burns, et al 2009b).…”

Section: Introductionmentioning

confidence: 99%

Chemical phosphorus recovery from animal manure and digestate : Laboratory and pilot experiments

Schoumans

Ehlert

Regelink

et al. 2017

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Chemical phosphorus recovery from animal manure and digestate; Laboratory and pilot experiments.Wageningen, Wageningen Environmental Research, Report 2849. 114 pp.; 43 fig.; 37 tab.; 41 ref.Since a number of decades the Netherlands faces manure surpluses, because the amount of phosphate produced in animal manure is larger than the amount that can be applied on agricultural land according to the application limits. This surplus needs to be exported from the Dutch agricultural sector. The costs of manure export are however high, and therefore new, simple and cheap innovative techniques are needed to recover phosphate from fresh or digested manure (digestate). The relative small amount of concentrated recovered P can be transported more economically for use outside the Netherlands or can be utilized as secondary P resource for industries, e.g. for the production of fertiliser. We report laboratory and pilot experiments that were carried out in search for cheap and innovative techniques of phosphorus recovery. The main goal of the experiments was to reduce the P-content in pig slurry or digested pig slurry by 25% to 75%. If this goal can be reached with -recovery, in principle all manure including its valuable components (organic matter and other nutrients) can be applied sustainably on agricultural land in The Netherlands. The results show that both on laboratory scale and pilot scale 25-75% of P can be technically recovered with the so called 'acid-base approach'. From a sustainability point of view the impact is positives in terms of energy savings, CO 2 -savings, phosphorus savings and also nitrogen savings. The economical perspective is also positive but will strongly depend on the disposal prices of treated pig slurry with a reduced P content and its value as substitute for mineral N fertiliser and value in terms of organic soil improver on the manure market.Keywords: phosphate, manure, digestate, intensive livestock production, phosphate recovery, pig slurry, manure treatment, manure separation. • Acquisition, duplication and transmission of this publication is permitted with clear acknowledgement of the source.• Acquisition, duplication and transmission is not permitted for commercial purposes and/or monetary gain.• Acquisition, duplication and transmission is not permitted of any parts of this publication for which the copyrights clearly rest with other parties and/or are reserved. New innovative approaches are needed to close the phosphorus (P) cycle in The Netherlands because the agricultural sector currently produces about 25% more P, in the form of manure, than can be applied on land. One promising solution to deal with the surplus amount of P in manure is to recover the surplus of P in the form of a mineral P product for use as a P fertiliser (for export) or as a raw P feedstock for the P fertiliser industries. This idea for 'closing the manure P cycle in The Netherlands' has been circulating for a while, but was never thought well over until in 2013 a Public Private Partnership (PPP) was set up with t...

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Section: Introductionmentioning

confidence: 99%

Chemical phosphorus recovery from animal manure and digestate : Laboratory and pilot experiments

Schoumans

Ehlert

Regelink

et al. 2017

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“…The phosphate generally existed in three different ionic species, including

{normalH}_{2} P {normalO}_{4}^{-}

HP {normalO}_{4}^{2 -}

, and

P {normalO}_{4}^{3 -}

, depending on the pH of the solution. When the pH of the solution ranged from 5 to 6, the main orthophosphate species was

{normalH}_{2} P {normalO}_{4}^{-}

. A substantial number of H + existed in the pharmaceutical wastewater in the pH range of 5–6, which was unconducive to the formation of magnesium phosphate precipitation.…”

Section: Resultsmentioning

confidence: 99%

Effective treatment of high phosphorus pharmaceutical wastewater by chemical precipitation

Sun

et al. 2017

Can J Chem Eng

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The conditions for the treatment of high phosphorus pharmaceutical wastewater using chemical precipitation were determined to achieve high efficiency on the removal of total phosphorus (TP). The key factors affecting the TP removal efficiencies of four metal salts (FeCl3, AlCl3, MgCl2, and CaCl2), such as molar ratio, initial wastewater pH, and reaction time, were investigated. The optimal metal mole ratios of FeCl3, AlCl3P, MgCl2, and CaCl2 for the TP removal were 1.8:1, 1.8:1, 1.6:1, and 1.6:1 in the initial pH range, respectively. The TP removal efficiencies obtained by FeCl3, AlCl3, MgCl2, and CaCl2 were 99.8 %, 98.3 %, 96.9 %, and 99.2 % at the optimal mole ratio and pH conditions with 30 min reaction time, respectively. FeCl3 and AlCl3 had better removal performance on COD, wherein the removal rates of COD by FeCl3 and AlCl3 were 38.6 % and 27.6 %, respectively. FeCl3 and CaCl2 were selected for the combined process of removing TP and overcoming the aforementioned problem. The final effluent quality was better than the one only used on one of the four metal salts, in which the removal rates of TP and COD were as high as 99.8 % and 46.9 %, respectively. The combined process with FeCl3 and CaCl2 was an effective method for the pretreatment of high phosphorus pharmaceutical wastewater to reduce the processing cost and to decrease the chemical oxygen demand (COD) and TP.

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“…Modifying of the applied voltage from 0.5 V to 1.1 V, resulted increasing the pH from 7.5 to 8.1, thereby, caused of an increase in ammonia volatilization and diffusion to the anode chamber (Zhou and Wu, 2012;Rahman et al, 2014). Eq.…”

Section: Precipitation Efficiencymentioning

confidence: 99%

Technology of Microbial Electrolysis Cell with Statistical Optimization by Response Surface Methodology for Bio-Hydrogen Production and Phosphorus Recovery

Alshehri

2018

Int J Appl Sci Biotechnol

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In this study, two chamber microbial electrolysis cells (MECs) were used to investigate effect of applied voltage and concentration of influent COD on bio-hydrogen (H2) production and phosphorus (P) recovery. On the cathode chamber P as crystals were precipitated (the maximum was 94%), and verified as struvite, using X-ray diffraction and scanning electron microscopy analysis. Maximum of the H2 production rate was 0.31m 3 /m 3 /d. H2 production and P recovery have highly affected by applied voltage according to statistical optimization, while P recovery only had significantly affected by influent COD concentration. The range from 28 to 42%, was the total of energy recovery in the MEC. The current findings demonstrated capability of H2 production and P recovery using MECs technology.

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Improving the prediction of ammonium nitrogen removal through struvite precipitation

Cited by 72 publications

References 32 publications

Chemical phosphorus recovery from animal manure and digestate : Laboratory and pilot experiments

Chemical phosphorus recovery from animal manure and digestate : Laboratory and pilot experiments

Effective treatment of high phosphorus pharmaceutical wastewater by chemical precipitation

Technology of Microbial Electrolysis Cell with Statistical Optimization by Response Surface Methodology for Bio-Hydrogen Production and Phosphorus Recovery

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