Process optimization of anammox-driven hydroxyapatite crystallization for simultaneous nitrogen removal and phosphorus recovery

Lin, Lili; Zhang, Yanlong; Beckman, Markus; Cao, Wenzhi; Ouyang, Tong; Wang, Shaopo; Li, Yu You

doi:10.1016/j.biortech.2019.121779

Cited by 55 publications

(7 citation statements)

References 45 publications

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“…In addition, the proportion of Ca-P in sludge was about 1%, which was mainly due to the presence of a small amount of Ca 2+ in the wastewater. PO 4 3− could react with Ca 2+ to produce hydroxyapatite (HAP) ( Lin et al, 2019 ). However, no HAP was detected in XRD, which was possibly attributed that its content was below the detection limit.…”

Section: Resultsmentioning

confidence: 99%

Phosphate substances transformation and vivianite formation in P-Fe containing sludge during the transition process of aerobic and anaerobic conditions

Liu

Gao

2021

Bioresource Technology

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Section: Resultsmentioning

confidence: 99%

Phosphate substances transformation and vivianite formation in P-Fe containing sludge during the transition process of aerobic and anaerobic conditions

Liu

Gao

2021

Bioresource Technology

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“…with anammox bacteria predominating in the outer layer of the granules, while a homogenous calcium phosphate matrix was present within the granules (in the inner core). The long-term operation has recently been evaluated (Lin et al, 2019) and some practical application guidelines for the coupled process have been established from the results,.…”

Section: Ammonia Stripping and Absorptionmentioning

confidence: 99%

New frontiers from removal to recycling of nitrogen and phosphorus from wastewater in the Circular Economy

Robles

Aguado

Barat

et al. 2020

Bioresource Technology

164

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Nutrient recovery technologies are rapidly expanding due to the need for the appropriate recycling of key elements from waste resources in order to move towards a truly sustainable modern society based on the Circular Economy.Nutrient recycling is a promising strategy for reducing the depletion of non-renewable resources and the environmental impact linked to their extraction and manufacture. However, nutrient recovery technologies are not yet fully mature, as further research is needed to optimize process efficiency and enhance their commercial applicability. This paper reviews state-of-the-art of nutrient recovery, focusing on frontier technological advances and economic and environmental innovation perspectives. The potentials and limitations of different technologies are discussed, covering systems based on membranes, photosynthesis, crystallization and other physical and biological nutrient recovery systems (e.g. incineration, composting, stripping and absorption and enhanced biological phosphorus recovery).

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“…Previous experiences concerning simultaneous biological N oxidation or removal and biologically induced P precipitation within the same bioreactor in the framework of waste water treatment, aimed at promoting P recovery, are summarised in Table 3 [70][71][72][168][169][170][171][172] (an extended version of this table is provided as Supplementary Material). This approach allows simplifying the configuration of the treatment system.…”

Section: Phosphorus Recovery Experiences In Concomitant Configurationmentioning

confidence: 99%

Recovery of Phosphorus from Waste Water Profiting from Biological Nitrogen Treatment: Upstream, Concomitant or Downstream Precipitation Alternatives

et al. 2020

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Mined phosphate rock is the largest source of phosphorus (P) for use in agriculture and agro-industry, but it also is a finite resource irregularly distributed around the world. Alternatively, waste water is a renewable source of P, available at the local scale. In waste water treatment, biological nitrogen (N) removal is applied according to a wide range of variants targeting the abatement of the ammonium content. Ammonium oxidation to nitrate can also be considered to mitigate ammonia emission, while enabling N recovery. This review focuses on the analysis of alternatives for coupling biological N treatment and phosphate precipitation when treating waste water in view of producing P-rich materials easily usable as fertilisers. Phosphate precipitation can be applied before (upstream configuration), together with (concomitant configuration), and after (downstream configuration) N treatment; i.e., chemically induced as a conditioning pre-treatment, biologically induced inside the reactor, and chemically induced as a refining post-treatment. Characteristics of the recovered products differ significantly depending on the case studied. Currently, precipitated phosphate salts are not typified in the European fertiliser regulation, and this fact limits marketability. Nonetheless, this topic is in progress. The potential requirements to be complied by these materials to be covered by the regulation are overviewed. The insights given will help in identifying enhanced integrated approaches for waste water treatment, pointing out significant needs for subsequent agronomic valorisation of the recovered phosphate salts, according to the paradigms of the circular economy, sustainability, and environmental protection.

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Process optimization of anammox-driven hydroxyapatite crystallization for simultaneous nitrogen removal and phosphorus recovery

Cited by 55 publications

References 45 publications

Phosphate substances transformation and vivianite formation in P-Fe containing sludge during the transition process of aerobic and anaerobic conditions

Phosphate substances transformation and vivianite formation in P-Fe containing sludge during the transition process of aerobic and anaerobic conditions

New frontiers from removal to recycling of nitrogen and phosphorus from wastewater in the Circular Economy

Recovery of Phosphorus from Waste Water Profiting from Biological Nitrogen Treatment: Upstream, Concomitant or Downstream Precipitation Alternatives

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