Valorisation of ferric sewage sludge ashes: Potential as a phosphorus source

Guedes, Paula; Couto, Nazaré; Ottosen, Lisbeth M.; Kirkelund, Gunvor Marie; Mateus, Eduardo P.; Ribeiro, Alexandra B.

doi:10.1016/j.wasman.2016.03.040

Cited by 16 publications

(15 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result was not anticipated, since in other studies comparing both set-ups (to extract phosphorus from wastes), the 2-chamber performed better. 8,17 A pH range of 2.5 -3.0 seems to be favourable to extract phosphorus from the digestate using a 3chamber ED cell (Fig. 4b).…”

Section: Resultsmentioning

confidence: 99%

“…Amongst the contaminants, heavy metals are of special concern due to their potentially negative effects in soils and crops. 4 Among extraction techniques, the electrodialytic (ED) process is pointed out as a feasible technique that has been used to extract phosphorus from a few waste streams: i) wastewater, 5 ii) sewage sludge 6 and their ashes [7][8][9][10][11] and iii) MSW digestate. 12 The principle of this technology has been explained elsewhere.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Testing new strategies to improve the recovery of phosphorus from anaerobically digested organic fraction of municipal solid waste

Oliveira

Dias-Ferreira

Labrincha

et al. 2019

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND: This work is focused on phosphorus recovery from anaerobically digested organic fraction of municipal solid waste (referred to as "digestate") as a fertiliser. The main purpose was to propose and test modifications to the electrodialytic process that increase phosphorus extraction, improve the quality of the fertiliser by removing contaminants, and reduce hydraulic retention time to This article is protected by copyright. All rights reserved. allow for smaller system footprints. Strategies tested were: i) lowering the pH of the digestate suspension to below 4.5 using the electrochemical reactions and enhance phosphorus solubilisation from the waste; ii) change the configuration of the electrodialytic cell from 3-to 2-chambers; and iii) stir the sample to shorten the duration of the extraction.RESULTS: Results show that the acidification of digestate by the electrochemical reactions was effective to enhance phosphorus extraction yield. Three-chamber electrodialytic experiments enabled the removal of heavy metals from digestate, producing phosphorus-rich solutions with a low level of metals. This resulted in the production of high quality fertiliser which can be used for agricultural applications. The modification of electrodialytic cell set-up from 3-chamber to 2-chamber did not result in an increase of the phosphorus extraction yields nor did it contribute to the removal of metals from the liquid phase of digestate. The reduction of the hydraulic retention time of electrodialytic extraction of phosphorus from 16d to 9d was attained by the use of stirring and by the electrodialytic acidification.CONCLUSIONS: The increase of phosphorus recovery was accomplished. 90% of phosphorus was successfully extracted from digestate and transformed into struvite.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Testing new strategies to improve the recovery of phosphorus from anaerobically digested organic fraction of municipal solid waste

Oliveira

Dias-Ferreira

Labrincha

et al. 2019

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

show abstract

“…At the same time, the soil of both fertilizer treatments had a slightly higher content of available P and K than the soil prior to setting up the field experiment. Sewage sludge is a potential source of nutrients [31,32], which may translate into an increase in the content of available macronutrients in soil after sewage sludge application. From the basic nutrients present in sewage sludge, phosphorus is the best absorbed by soil, whereas potassium -the least.…”

Section: Soil Chemical Propertiesmentioning

confidence: 99%

Effect of Municipal Sewage Sludge on Soil Chemical Properties and Chemical Composition of Spring Wheat

Antonkiewicz

Kuc

Witkowicz

et al. 2019

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

Municipal sewage sludge from rural sewage treatment plants is characterized by a substantial content of organic matter and macronutrients, which can be used in cultivation of cereals. In a farm located in the commune of Iwanowice in the south of Poland (Malopolska province), municipal sewage sludge was applied under spring wheat cultivation. The experiment was set up on heavy soil with slightly acid reaction and medium content of available forms of P, K, Mg. Application of sewage sludge in a dose of 23 Mg fresh matter per hectare (4.21 Mg d.m.) led to no significant changes in chemical properties of the soil. Application of sewage sludge significantly increased yield of spring wheat. That increase led to a significant decrease in the content of N, P, K, Na, Mg and Ca in spring wheat. Utilization of N, Mg, K, P and Ca from sewage sludge by spring wheat was at a level of 82, 63, 44, 36, 9 %, respectively, of the amount introduced with the waste. Application of municipal sewage sludge significantly decreased the value of Ca : P ratio in spring wheat grain and straw. The sewage sludge did not cause a significant change in the values of Ca : Mg, K : Na, K : (Ca+Mg), K : Mg and K : Ca ratios in spring wheat grain and straw. Municipal sewage sludge can be used environmentally, including for fertilization of cereals, provided that environmental standards are kept.

show abstract

“…The two‐compartment cell EDR design has been proven to reduce the acidification time, since the supply of protons from electrolysis takes place directly in the suspended solid compartment . Several studies have applied EDR to different solid matrices using the two‐compartment cell . Regarding EDR applications, it has been widely applied to different matrices, as can be concluded from numerous research works previously discussed.…”

Section: Electrochemical Technologiesmentioning

confidence: 99%

“…76 Several studies have applied EDR to different solid matrices using the two-compartment cell. 42,[77][78][79][80][81][82] Regarding EDR applications, it has been widely applied to different matrices, as can be concluded from numerous research works previously discussed. Table 1 summarizes relevant information about important studies dealing with EDR applied to different matrices.…”

Section: Overview Of Current Status Of Ekr and Ed: Applicationsmentioning

confidence: 99%

Electrodialytic processes in solid matrices. New insights into battery recycling. A review

Villén-Guzmán

Arhoun

Vereda‐Alonso

et al. 2019

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

Electrodialytic remediation has been widely applied to the recovery of different contaminants from numerous solid matrices, solving emerging issues of environmental concern. Results and conclusions reported in studies about real contaminated matrices are summarized in this work. The influence of pH value on the treatment effectiveness has been widely proved, highlighting the phenomenon of ‘water splitting’ in the membrane surface. This dissociation of water molecules is related to the ‘limiting current’ which it is desirable to exceed at the anion exchange membrane in order to produce the entering of protons toward the solid matrix. Other important parameters for the optimization of the technique, such as the current density and the liquid/solid ratio, are also discussed through the revision of studies using real solid matrices. This work also focuses on the pioneer proposal of electrokinetic technologies for the recycling of lithium ion batteries, considering the relevance of waste properties in the design and optimization of the technique. From a thorough literature revision, it could be concluded that further experimental results are needed to allow an optimal application of the technique to the rising problem of residues from batteries. The main aim of this work is to take the first steps in the recovery of valuable metals such as Li and Co from spent batteries, incorporating principles of green chemistry. © 2019 Society of Chemical Industry

show abstract

Valorisation of ferric sewage sludge ashes: Potential as a phosphorus source

Cited by 16 publications

References 30 publications

Testing new strategies to improve the recovery of phosphorus from anaerobically digested organic fraction of municipal solid waste

Testing new strategies to improve the recovery of phosphorus from anaerobically digested organic fraction of municipal solid waste

Effect of Municipal Sewage Sludge on Soil Chemical Properties and Chemical Composition of Spring Wheat

Electrodialytic processes in solid matrices. New insights into battery recycling. A review

Contact Info

Product

Resources

About