Recovery of phosphate from dewatered anaerobic sludge and wastewater by thermally treated P.oceanica residues and its potential application as a fertilizer

Photiou, Panagiota; Vyrides, Ioannis

doi:10.1016/j.jenvman.2021.113441

Cited by 9 publications

(4 citation statements)

References 35 publications

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“…Thermally treated organic materials seem to be the optimal solution for the adsorption of phosphorus compounds from sewage waste. Posidonia oceanica waste that has been thermally treated (500°C, 1 h) has been identified as the optimal adsorbent for the recovery of phosphorus with a capacity of 179.1 mg/g [ 161 ]. The authors evaluated the phosphorus extraction methods using sulfuric and nitric acid, where the use of H 2 SO 4 under the influence of temperature allowed for a recovery of 93.2%.…”

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

confidence: 99%

“…Pretreatment, which is commonly used, is the thermal treatment used to change the structure of inorganic compounds or obtain biochars from biological materials. Posidonia oceanica exposed to 500°C for 1 h has a high adsorption capacity and selectivity for P recovery [ 161 ]. This indicates the potential for utilization of other biological waste for such applications.…”

Section: Guidelines For a Practical Approachmentioning

confidence: 99%

“…Thermal treatment has been described to cause crystal structure of the adsorbents and increase stability to pH changes. For the extraction of P, sulfuric acid was used, resulting in the removal of 93.2% P from the adsorbent, which is a highly satisfactory method [ 161 ]. The described method can be a cheap way to separate P using biological or inorganic waste.…”

Section: Guidelines For a Practical Approachmentioning

confidence: 99%

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

et al. 2022

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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.

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

confidence: 99%

Section: Guidelines For a Practical Approachmentioning

confidence: 99%

Section: Guidelines For a Practical Approachmentioning

confidence: 99%

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

et al. 2022

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“…MWS can be treated and used in various ways, such as being applied to agricultural land as a fertilizer by using a dewatered anaerobic sludge [3], soil conditioner by conditioning and dewatering [4], bubbling fluidized bed incineration process [5], bioenergy (biogas or syngas) production [6] or disposed of in landfills [7]. However, it is important to properly manage and treat MWS to minimize its environmental and health impacts.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Solid Acid Catalysts for Sustainable Biodiesel Production from Wastewater-Derived Sludge: A Systematic and Critical Review

Ansari,

Jamali,

Ghanbari

et al. 2024

Preprint

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This comprehensive review has systematically examined the use of heterogeneous solid acid catalysts in the production of biodiesel from wastewater-derived sludge by using the PRISMA methodology. The manuscript highlighted the composition and characteristics of wastewater-derived sludge, presenting both the opportunities and challenges associated with its use as a feedstock for biodiesel production. Various types of catalysts were dis-cussed, with a detailed exploration of heterogeneous solid acid catalysts, including zeolites, hetero-polyacid (HPA), mixed metal oxides, and sulphonic acid group catalysts. The advantages and limitations of these catalysts were critically analyzed, providing a balanced view of their potential in industrial applications. The application section delved into the catalytic transesterification reaction, mechanisms of biodiesel production, and the effects of catalyst loading on yield. Performance metrics such as catalytic activity, stability, recyclability, cost-effectiveness, and environ-mental impact were thoroughly evaluated, offering a clear understanding of the efficacy of these catalysts. Synthesis and characterization techniques were also reviewed, shedding light on the latest preparation methods and characterization techniques. Recent advances in catalyst development were presented, showcasing the innovative strides made in enhancing catalyst performance. The environmental and economic implications of using solid acid catalysts for bio-diesel production were assessed, emphasizing the importance of sustainability and economic viability.

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