Phosphorus recovery from sewage sludge ash with bioleaching and electrodialysis

Semerci, Neslihan; Kunt, Büşra; Çallı, Barış

doi:10.1016/j.ibiod.2019.104739

Cited by 49 publications

(12 citation statements)

References 41 publications

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“…Electrodialysis experiments were conducted with a gold-coated copper electrode and had a 24.6% recovery rate of phosphorus into the anode chamber. This number is low, and it is likely due to precipitation in the middle and cathode chambers due to the lack of a continuous pH control to keep the phosphorus in solution, but the method does show promise ( Semerci et al., 2019 ).…”

Section: Electrochemical Separations For Selective Recoverymentioning

confidence: 99%

Electrochemical approaches for selective recovery of critical elements in hydrometallurgical processes of complex feedstocks

Kim¹,

Candeago²,

Rim³

et al. 2021

iScience

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Summary Critical minerals are essential for the ever-increasing urban and industrial activities in modern society. The shift to cost-efficient and ecofriendly urban mining can be an avenue to replace the traditional linear flow of virgin-mined materials. Electrochemical separation technologies provide a sustainable approach to metal recovery, through possible integration with renewable energy, the minimization of external chemical input, as well as reducing secondary pollution. In this review, recent advances in electrochemically mediated technologies for metal recovery are discussed, with a focus on rare earth elements and other key critical materials for the modern circular economy. Given the extreme heterogeneity of hydrometallurgically-derived media of complex feedstocks, we focus on the nature of molecular selectivity in various electrochemically assisted recovery techniques. Finally, we provide a perspective on the challenges and opportunities for process intensification in critical materials recycling, especially through combining electrochemical and hydrometallurgical separation steps.

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Section: Electrochemical Separations For Selective Recoverymentioning

confidence: 99%

Electrochemical approaches for selective recovery of critical elements in hydrometallurgical processes of complex feedstocks

Kim¹,

Candeago²,

Rim³

et al. 2021

iScience

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“…The physical and chemical characterisation of sewage sludge ash was investigated according to Semerci et al . (2019), Guedes et al . (2014) and Ottosen et al .…”

Section: Methodsmentioning

confidence: 99%

Comparison of dried sludge and sludge ash for phosphorus recovery with acidic and alkaline leaching

Semerci

Ahadi

Coşgun

2020

Water & Environment J

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Nowadays, the recovery of phosphorus has been in the spotlight due to its importance for food security and depleting sources. In this study, phosphorus recovery from dried sewage sludge and sludge ash by acid and alkaline leaching was evaluated. Optimum extraction time and temperature were determined as two hours and ambient temperature. Results showed the superiority of strong acidic conditions for leaching; 75 ml/g with 0.4N HCl and 25 ml/g with 0.6N HCl were determined as optimum conditions to achieve efficient phosphorus dissolution from sludge ash (94.6%) and dried sludge (91.1%), respectively, with the lower heavy metal concentrations. Lower L/S ratio put forward the dried sludge as a more advantageous resource for phosphorus extraction. Besides, by alkaline leaching of sludge ash and dried sludge, 60.3 and 70.3% phosphorus dissolutions were achieved with 75 ml/g and 1N NaOH; and the leachate was a suitable product for phosphorus precipitation due to its high pH.

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“…Semerci el al. (2019) [98] used unidentified sulphur oxidizing bacteria isolated from a WWTP on an SSA suspension with elemental sulphur to lower the pH and facilitate the leaching of the P from the SSA mineral form to the ionic form. A bioleaching experiment on lab‐scale reached an amount of P released from SSA that was 1.3 g of originally 1.6 g P per 20 g ash.…”

Section: P In Sewage Sludge Ashmentioning

confidence: 99%

New developments in biological phosphorus accessibility and recovery approaches from soil and waste streams

Vučić

Müller

2021

Engineering in Life Sciences

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Phosphorus (P) is a non‐renewable resource and is on the European Union's list of critical raw materials. It is predicted that the P consumption peak will occur in the next 10 to 20 years. Therefore, there is an urgent need to find accessible sources in the immediate environment, such as soil, and to use alternative resources of P such as waste streams. While enormous progress has been made in chemical P recovery technologies, most biological technologies for P recovery are still in the developmental stage and are not reaching industrial application. Nevertheless, biological P recovery could offer good solutions as these technologies can return P to the human P cycle in an environmentally friendly way. This mini‐review provides an overview of the latest approaches to make P available in soil and to recover P from plant residues, animal and human waste streams by exploiting the universal trait of P accumulation and P turnover in microorganisms and plants.

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Phosphorus recovery from sewage sludge ash with bioleaching and electrodialysis

Cited by 49 publications

References 41 publications

Electrochemical approaches for selective recovery of critical elements in hydrometallurgical processes of complex feedstocks

Electrochemical approaches for selective recovery of critical elements in hydrometallurgical processes of complex feedstocks

Comparison of dried sludge and sludge ash for phosphorus recovery with acidic and alkaline leaching

New developments in biological phosphorus accessibility and recovery approaches from soil and waste streams

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