Leaching of phosphorus from incinerated sewage sludge ash by means of acid extraction followed by adsorption on orange waste gel

Biswas, Biplob Kumar; Inoue, Katsutoshi; Harada, Hiroyuki; Ohto, Keisuke; Kawakita, Hidetaka

doi:10.1016/s1001-0742(08)62484-5

Cited by 141 publications

(67 citation statements)

References 25 publications

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“…Efforts to eliminate these metal(loid)s have included adsorption by organic and inorganic media (activated carbon, biochar, modified silicate, etc.) [26][27][28][29], cation-exchange resins [3], solvent extraction [10] and ion migration in electric fields [30].…”

Section: Introductionmentioning

confidence: 99%

Recovery of phosphorus from incinerated sewage sludge ash by combined two-step extraction and selective precipitation

Fang

Donatello

et al. 2018

Chemical Engineering Journal

102

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Section: Introductionmentioning

confidence: 99%

Recovery of phosphorus from incinerated sewage sludge ash by combined two-step extraction and selective precipitation

Fang

Donatello

et al. 2018

Chemical Engineering Journal

102

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“…Previous studies indicated that inorganic acids (especially sulfuric acid) could achieve a better P extraction efficiency (more than 90%) (Petzet et al, 2011;Xu et al, 2012), but also revealed that this led to the leaching of high concentrations of heavy metals from the ISSA (Donatello and Cheeseman, 2013). Therefore, P purification is another inevitable problem to be resolved (Franz, 2008;Biswas et al, 2009;Petzet, 2012).…”

Section: Introductionmentioning

confidence: 99%

Change in re-use value of incinerated sewage sludge ash due to chemical extraction of phosphorus

Chen

Wang

et al. 2018

Waste Management

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The potential of six different extractants to recover phosphorus (P) from incinerated sewage sludge ash (ISSA) was evaluated. Secondary effects such as the co-dissolution of Zn and Cu were also considered. The residual ISSA from each study was assessed in particular detail, focusing on the leachability of remaining Zn and Cu, major element composition, crystalline phases and overall degree of crystallinity and particle size distribution. The residual ISSA was also evaluated as a pozzolanic material using a Strength Activity Index (SAI) test with mortars containing Portland cement with a 20% substitution by ISSA. All results were compared to tests with untreated ISSA. Overall, the use of 3 of the 6 extractants could be ruled out due to poor P recovery potential and/or a serious compromise of the potential reuse of residual ISSA in Portland cement-based materials. The results highlight the added value of considering the potential reuse of residual ISSA when trying to optimize P recovery from ISSA by wet methods.

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“…Phosphorus Recovery from Municipal Sludge Ash. Ashes from incinerated sludge contains 4 to 11% P content (Biswas et al, 2009;Donatello et al, 2010;Ottosen et al, 2013). It also represents approximately 90% of the influent P load as with sludge.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus Recovery by Methods Beyond Struvite Precipitation

Law

Pagilla

2018

Water Environment Research

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Unintentional phosphate precipitation at water resource recovery facilities (WRRFs) causes operation and maintenance challenges. With global phosphorus (P) scarcity looming and receiving water eutrophication caused by excess discharges of P, intentional P recovery at WRRFs has been gaining traction. To date, struvite recovery as slow release fertilizer has been the focus of P recovery. However, struvite recovery is not always the most cost-effective approach, especially when phosphate fertilizers cost considerably less than the cost to recover struvite as fertilizer. The aim of this state-of-an-art review paper is to discuss P recovery as calcium phosphate, which could be a fertilizer feedstock and incurs less chemical costs to produce. Calcium phosphate also offers broader applications for other industrial uses beyond fertilizers since the composition is close to mined phosphate rock. A strategic approach for a regional reclaimed phosphate reserve is proposed to secure the most economical future supply of P.

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Leaching of phosphorus from incinerated sewage sludge ash by means of acid extraction followed by adsorption on orange waste gel

Cited by 141 publications

References 25 publications

Recovery of phosphorus from incinerated sewage sludge ash by combined two-step extraction and selective precipitation

Recovery of phosphorus from incinerated sewage sludge ash by combined two-step extraction and selective precipitation

Change in re-use value of incinerated sewage sludge ash due to chemical extraction of phosphorus

Phosphorus Recovery by Methods Beyond Struvite Precipitation

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