scholarly journals Critical Evaluation of the Agronomic Effectiveness of Recovered Phosphate Fertilizer Produced From Incinerated Sewage Sludge Ash

2021 ◽  
Author(s):  
Le FANG ◽  
Qiming Wang ◽  
Jiang-shan Li ◽  
Chi Sun Poon
Keyword(s):  
Sewage Sludge ◽  
Plant Growth ◽  
Critical Evaluation ◽  
Phosphate Fertilizer ◽  
P Availability ◽  
Agronomic Effectiveness ◽  
Sewage Sludge Ash ◽  
P Recovery ◽  
Sludge Ash ◽  
P Fertilizers

Abstract Phosphorus (P) recovery from incinerated sewage sludge ash (ISSA) has been extensively investigated, and various recovered phosphate fertilizers (RPFs) have been produced. In this study, three RPFs (calcium phosphate compounds (CaP), struvite (SP), and P-loaded biochar (BP)) produced from ISSA were characterized and their agronomic effectiveness were verified by pot experiments with the cultivation of choy sum (Brassica campestris L. ssp. Chinensis var. utillis Tsen et Lee) and ryegrass (Lolium perenne L.). The SP has the highest P purity while the BP has the most complex P species. And the plant growth results showed that the RPFs greatly facilitated plant growth and demonstrated superior/comparable effects to those of MP/CoF. In general, choy sum fertilized with SP showed the best effect due to the Mg involved and the high P purity of SP, while ryegrass fertilized with BP performed the best among all of the groups because of the additional nutritional elements and the high P availability of BP. Additionally, the accumulation of heavy metals in the plants under all conditions did not exceed the limits stipulated in the regulations. These results indicate that recovering P from ISSA is an attractive technology to produce P fertilizers, which can alleviate both the scarcity of phosphate resources and the burden of ISSA management.

scholarly journals Phosphate fertilizer value of heat treated sewage sludge ash

2014 ◽  
Vol 60 (No. 12) ◽  
pp. 555-561 ◽  
Author(s):  
M. Severin ◽  
J. Breuer ◽  
M. Rex ◽  
J. Stemann ◽  
Adam Ch ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Water Solubility ◽  
Converter Slag ◽  
Phosphate Fertilizer ◽  
P Uptake ◽  
Steel Mill ◽  
Sewage Sludge Ash ◽  
Heat Treated ◽  
Treated Sewage ◽  
Sludge Ash

This study focuses on the question whether heat treated sewage sludge ashes are more favourable as fertilizers than untreated sewage sludge ashes (USSA) and whether their fertilization effects are comparable with commercial triple superphosphate (TSP). In a pot experiment, maize was fertilized either with one of three heat treated and Na-, Ca- and Si-compounds amended sewage sludge ashes (two glown phosphates, steel mill slag + sewage sludge ash) or USSA or TSP as control. Fertilization with USSA did not increase the biomass yield and the P uptake of maize in comparison to the P0 treatment (7.25 resp. 8.35 g dry matter/pot). Fertilization with heat treated sewage sludge ashes and TSP resulted in significantly higher yields and plant P uptakes which are on average eight times higher than treatment with USSA and P0 control. Biomass yields and P uptake of maize after fertilization with heat treated sewage sludge ashes are not significantly different from those after TSP fertilization. The main P compound in USSA is Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>. By heat treatment and amendment with different sodium, calcium, sulphur and silicon containing additives or steel mill converter slag, Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> is converted to Ca- and Na-silico-phosphates, which have a higher water solubility than Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>. This increased solubility is responsible for the high plant availability of this phosphates.

Phosphorus (P) recovery and reuse as fertilizer from incinerated sewage sludge ash (ISSA)

2020 ◽  
pp. 263-288
Author(s):  
Jiang-Shan Li ◽  
Le Fang ◽  
Qiming Wang ◽  
Daniel C.W. Tsang ◽  
Shane Donatello ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Sewage Sludge Ash ◽  
P Recovery ◽  
Sludge Ash ◽  
Recovery And Reuse

Sewage Sludge Ash (SSA) as a phosphate fertilizer in the aspect of legal regulations

2015 ◽  
pp. 323-328 ◽  
Author(s):  
M Smol ◽  
A Henclik ◽  
J Kulczycka ◽  
B Tarko ◽  
K Gorazda ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Phosphate Fertilizer ◽  
Legal Regulations ◽  
Sewage Sludge Ash ◽  
Sludge Ash

scholarly journals Producing Superphosphate with Sewage Sludge Ash: Assessment of Phosphorus Availability and Potential Toxic Element Contamination

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1506
Author(s):  
Yawen You ◽  
Jakob Klein ◽  
Tobias Edward Hartmann ◽  
Peteh Mehdi Nkebiwe ◽  
Huaiyu Yang ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Nutrient Use Efficiency ◽  
Toxic Element ◽  
Raw Material ◽  
P Availability ◽  
Sewage Sludge Ash ◽  
Fertilizer Production ◽  
P Fertilizer ◽  
Sludge Ash ◽  
Potential Toxic Element

Recovering and recycling phosphorus (P) from sewage sludge ash (SSA) for the purpose of P fertilizer production contributes to reducing the input of mined phosphate-minerals and closing of the P cycle. However, direct use of SSA as fertilizer is often a questionable strategy due to its low nutrient use efficiency. In addition, the environmental risk potential of utilizing SSA in agriculture is still unclear, in particular potential toxic element (PTE) contamination. In this study, a mixture of SSA and rock phosphate was used at lab-scale superphosphate (SP) production. P availability of the final product and PTE contamination (Cd, Cr, Cu, Zn, Pb, Ni) in soil and crop was investigated through maize (Zea mays L.) cultivation. Results showed that the application of SP that was produced by 25% SSA replacement did not affect the growth, P uptake, and PTE content in aboveground maize compared to the application of SP produced without SSA replacement. However, significant inputs of SP with SSA replacement may decrease the solid-soil solution partitioning of Cu, Ni and Pb in the long-term. Separation of municipal/industrial sludge and PTE removal technology are necessary to be implemented prior to the use of SSA as a secondary raw material in P-fertilizer production.

Chemical state of mercury and selenium in sewage sludge ash based P-fertilizers

2016 ◽  
Vol 313 ◽  
pp. 179-184 ◽  
Author(s):  
Christian Vogel ◽  
Oliver Krüger ◽  
Hannes Herzel ◽  
Lucia Amidani ◽  
Christian Adam
Keyword(s):  
Sewage Sludge ◽  
Chemical State ◽  
Sewage Sludge Ash ◽  
Sludge Ash ◽  
P Fertilizers
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