CO2-assisted phosphorus extraction from poultry litter and selective recovery of struvite and potassium struvite

Shashvatt, Utsav; Benoit, Josh; Aris, Hannah; Blaney, Lee

doi:10.1016/j.watres.2018.06.035

Cited by 28 publications

(12 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because EDTA and citrate are larger than P(V), these species undergo slower diffusion. The presence of ligands in the draw solution is not a major concern, because previous studies employed ligands to complex calcium and precipitate high-purity struvite from animal manure slurries. , …”

Section: Resultsmentioning

confidence: 99%

“…With the rapid depletion of phosphate rock reserves, alternative sources of phosphorus will play a key role in sustaining large-scale food production in the coming decades. − One potential strategy is to recover phosphorus from waste activated sludge (WAS) generated at municipal wastewater treatment plants. , In many locations, WAS contains high levels of coagulant residuals from the use of alum (Al 2 (SO 4 ) 3 ·18H 2 O) or ferric chloride (FeCl 3 ·6H 2 O) for enhanced phosphorus removal. − Dewatered WAS is often used as a soil amendment; , however, the high aluminum or iron content lowers the agronomic value of WAS-derived products because phosphorus remains strongly bound to the metal (oxy)hydroxide solids and is, therefore, unavailable to crops. , Lime or other alkaline substances are frequently used to stabilize dewatered sludge, further reducing phosphorus availability to plants . Due to risks from heavy metals, agricultural reuse of WAS is not always feasible. − For these reasons, new technologies that enable the selective recovery of phosphorus from WAS are needed to produce high-quality fertilizers and achieve a circular phosphorus economy.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ligand-Enabled Donnan Dialysis for Phosphorus Recovery from Alum-Laden Waste Activated Sludge

Shashvatt

Amurrio

Blaney

2022

Environ. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

While many nutrient recovery technologies target liquid waste streams, new strategies are required for effective phosphorus recovery from solid waste. This study reports an innovative ligand-enabled Donnan dialysis process to recover orthophosphate (P(V)) from alum-laden waste activated sludge (WAS). Four ligands, namely acetate, citrate, ethylenediaminetetraacetate (EDTA), and oxalate, were evaluated for P(V) release from a synthetic sludge containing 5 mM P(V) and 25 mM Al(III) and a real, alum-laden WAS with similar contents. Citrate and EDTA released more than 95% of P(V) at doses of 30 mM, outperforming acetate and oxalate. The ligand-based solubilization strategy was coupled with Donnan dialysis to recover P(V) into a clean sodium chloride draw solution. After Donnan dialysis with the synthetic sludge, the P(V) recovery's order was as follows: EDTA (54.4%) > citrate (41.7%) > oxalate (4.3%). The P(V) recovery efficiencies were slightly lower for Donnan dialysis with real, alum-laden WAS, namely 45.1% and 25.2% for EDTA and citrate addition, respectively, due to competitive effects exerted by other dissolved species. These promising results successfully demonstrated the proof-of-concept for ligand-enabled Donnan dialysis.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ligand-Enabled Donnan Dialysis for Phosphorus Recovery from Alum-Laden Waste Activated Sludge

Shashvatt

Amurrio

Blaney

2022

Environ. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recovery of phosphate from poultry litter can be carried out in two stages: acid and carbon dioxide treatment and precipitation in an alkaline environment with simultaneous aeration. With this method, more than 70% of phosphorus can be recovered in a short time (less than an hour)*** [ 134 ]. The article by Staro et al (2016) evaluated potential waste from the meat industry, such as feathers, meat and bones, and poultry litter, to obtain fertilizer additives rich in macronutrients.…”

Section: Phosphorus Recovery Technologies and Trends From 10 Years Pe...mentioning

confidence: 99%

Phosphorus recovery from wastewater and bio-based waste: an overview

et al. 2022

View full text Add to dashboard Cite

Phosphorus is one of the most important macronutrients needed for the growth of plants. The fertilizer production market uses 80% of natural, non-renewable phosphorus resources in the form of phosphate rock. The depletion of those deposits forces a search for other alternatives, including biological waste. This review aims to indicate the most important ways to recover phosphorus from biowaste, with particular emphasis on wastewater, sewage sludge, manure, slaughter or food waste. A comparison of utilized methods and directions for future research based on the latest research is presented. Combining biological, chemical, and physical methods with thermal treatment appears to be the most effective way for the treatment of wastewater sludge in terms of phosphorus recovery. Hydrothermal, thermochemical, and adsorption on thermally treated adsorbents are characterized by a high phosphorus recovery rate (over 95%). For animal by-products and other biological waste, chemical methods seems to be the most optimal solution with a recovery rate over 96%. Due to its large volume and relatively low phosphorus content, wastewater is a resource that requires additional treatment to recover the highest possible amount of phosphorus. Pretreatment of wastewater with combined methods seems to be a possible way to improve phosphorus recovery. A compressive evaluation of combined methods is crucial for future research in this area.

show abstract

“…Ease of handling and low cost of inputs are considered the main advantages of recovering this mineral from AWWs (De-Bashan and Bashan, 2004). However, compared to struvite, hydroxyapatite has no potential as a fertilizer for agriculture due to its low solubility and sufficient Ca 2+ /P specific binding strength to hinder P availability in the soil (Hao et al, 2013;Shashvatt et al, 2018;Li et al, 2020).…”

Section: Production Of Struvite and Hydroxyapatite By Chemical Precipitationmentioning

confidence: 99%

Study on Brazilian agribusiness wastewaters: composition, physical‑chemical characterization, volumetric production and resource recovery

Morais

Coelho

Silva

et al. 2021

Rev. Bras. Ciênc. Ambient. (Online)

View full text Add to dashboard Cite

Brazil is a significant producer of agricultural and agro-industrial waste, which can be used to recover valuable resources, such as struvite, hydroxyapatite, methane gas, hydrogen gas, and carboxylic acids, to mitigate the environmental impacts of the agro-industrial sector, add economic value to organic waste, and promote the sustainability of natural resources. Thus, this work's objective was to compile and analyze data on the composition, physical-chemical characterization, and volumetric production of six agricultural and agro-industrial wastewaters (AWWs) from activities of paramount importance in Brazilian agribusiness and to report studies on resource recovery from those liquid wastes. The literature review was carried out by analyzing scientific works obtained by searching for keywords in different databases. It was concluded that swine wastewaters (SWs), slaughterhouse wastewaters (SHWs), and dairy wastewaters (DWs) are the most promising for struvite recovery. DWs also stand out for the recovery of hydroxyapatite. SWs and brewery wastewaters (BWs) are commonly used for prospecting for algae or bacterial biomass and their derivative products. All AWWs analyzed are considered promising for biogas, methane and hydrogen, while the most soluble AWWs are more valuable for carboxylic acid production.

show abstract

CO2-assisted phosphorus extraction from poultry litter and selective recovery of struvite and potassium struvite

Cited by 28 publications

References 38 publications

Ligand-Enabled Donnan Dialysis for Phosphorus Recovery from Alum-Laden Waste Activated Sludge

Ligand-Enabled Donnan Dialysis for Phosphorus Recovery from Alum-Laden Waste Activated Sludge

Phosphorus recovery from wastewater and bio-based waste: an overview

Study on Brazilian agribusiness wastewaters: composition, physical‑chemical characterization, volumetric production and resource recovery

Contact Info

Product

Resources

About