Efficient recovery of phosphorus and sulfur from Anaerobic Membrane Bioreactor (AnMBR) permeate using chemical addition of iron and evaluation of its nutrient availability for plant uptake

Heronemus, Evan; Gamage, Kasuni; Hettiarachchi, Ganga M.; Parameswaran, Prathap

doi:10.1016/j.scitotenv.2021.146850

Cited by 12 publications

(5 citation statements)

References 57 publications

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“…Hence, in general, all fertilizers showed a higher %Resin P in Sec 1 (high P concentration: soil volume ratio) than in Sec 2 regardless of the liming addition. Other studies analyzing the movement of P from TSP found similar results (Heronemus et al, 2021;Lombi et al, 2005).…”

Section: Mobility and Potential Availability Of P To Plantssupporting

confidence: 65%

Influence of filter cake associated with mineral phosphate sources on soil phosphorus dynamics in sugarcane

Soares¹

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Section: Mobility and Potential Availability Of P To Plantssupporting

confidence: 65%

Influence of filter cake associated with mineral phosphate sources on soil phosphorus dynamics in sugarcane

Soares¹

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“…However, ferric chloride usage for sulfide precipitation always resulted in life cycle impacts for C4:AnWW-oxN that were higher than those for C3:AnWW-oxSN (Figure ). Although iron precipitation of sulfide has synergy with chemical phosphorus removal (as assumed for each wastewater treatment configuration), configurations in which sulfide is biologically oxidized prior to chemical phosphorus precipitation should be prioritized due to the lower impacts across all environmental categories. These results agree with the analysis conducted by Harclerode et al (2020), who reported that for various anaerobic treatment trains, biological sulfide oxidation lowered life cycle impacts compared to chemical precipitation .…”

Section: Resultsmentioning

confidence: 99%

Anaerobic Wastewater Treatment and Potable Reuse: Energy and Life Cycle Considerations

Kim,

Criddle

2023

Environ. Sci. Technol.

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Anaerobic secondary treatment has the potential to facilitate energy-positive operations at wastewater treatment plants, but post-treatment of the anaerobic effluent is needed to recover dissolved methane and nutrients and remove sulfide. In this study, a life cycle assessment was conducted to compare hypothetical full-scale wastewater treatment trains and direct potable reuse trains that combine the staged anaerobic fluidized membrane bioreactor (SAF-MBR) with appropriate post-treatment. We found that anaerobic wastewater treatment trains typically consumed less energy than conventional aerobic treatment, but overall global warming potentials were not significantly different. Generally, recovery of dissolved methane for energy production resulted in lower life cycle impacts than microbial transformation of methane, and microbial oxidation of sulfide resulted in lower environmental impacts than chemical precipitation. Use of reverse osmosis to produce potable water was also found to be a sustainable method for nutrient removal because direct potable reuse trains with the SAF-MBR consumed less energy and had lower life cycle impacts than activated sludge. Moving forward, dissolved methane recovery, reduced chemical usage, and investments that enable direct potable reuse have been flagged as key research areas for further investigation of anaerobic secondary treatment options.

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“…13,15 Recent efforts in the author's group involve the addition of lime as a coagulant to produce Recovered Nutrient Products (RNPs) that are primarily Calcium Phosphate solids, whose release rates and plant availability can be tun-able, an immense advantage to the product, making it superior than conventional fertilizers for food cultivation and other applications (Figure 4B). 35 The author's research has established the lowered energy requirement for the AnMBR platform when it primarily produces methane as shown in Figure 5, compared to conventional activated sludge. Further process optimization will focus on decreasing fouling energy requirements even further by periodic pulse sparging at high flow rates rather than continuous sparging; bioreactor mixing profile modifications in the primary bioreactor.…”

Section: Beneficial Recovery Of Ammonia-n and Phosphorus-p From The M...mentioning

confidence: 99%

Sustainable and Total Recovery of Resources from Wastewaters through the Anaerobic Membrane Bioreactor Platform

Parameswaran

2023

merrill

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nergy positive and sustainable wastewater treatment through Anaerobic Membrane Bioreactors (AnMBRs) with simultaneous recovery of valuable nutrients (Nitrogen, Phosphorus) and water for indirect potable reuse is emerging as a viable option for municipalities, agro-businesses, and other utilities. A pilot scale AnMBR operated by the PI's team at Ft. Riley, Kansas, under ambient conditions continuously for 270 days treating 1000 gallons per day of municipal wastewater has consistently achieved these goals. Specifically, this AnMBR process configuration was able to achieve approximately 73% energy neutral operation by maximizing gaseous and dissolved methane energy capture while minimizing gas sparging and mixing energy requirements. The AnMBR also achieved an average removal efficiency of 88±7% and 88±6% for COD and BOD 5 , respectively, at temperatures ranging from 12.7°C to 31.5°C, demonstrating its feasibility for ambient temperature operation. The AnMBR was also paired with downstream nutrient recovery using a coagulation-flocculation-sedimentation process, removing 94±3% of phosphorus and over 99% of nitrogen, as well as both gaseous and dissolved methane capture, which could generate an estimated 72.8% of the power required for energy neutrality. The successful integration of AnMBRs in a treatment train that addresses the critical challenges of dissolved methane and nutrients demonstrates the viability of the technology in achieving holistic wastewater treatment.

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Efficient recovery of phosphorus and sulfur from Anaerobic Membrane Bioreactor (AnMBR) permeate using chemical addition of iron and evaluation of its nutrient availability for plant uptake

Cited by 12 publications

References 57 publications

Influence of filter cake associated with mineral phosphate sources on soil phosphorus dynamics in sugarcane

Influence of filter cake associated with mineral phosphate sources on soil phosphorus dynamics in sugarcane

Anaerobic Wastewater Treatment and Potable Reuse: Energy and Life Cycle Considerations

Sustainable and Total Recovery of Resources from Wastewaters through the Anaerobic Membrane Bioreactor Platform

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