Effect of hydrodynamic cavitation on flocs structure in sewage sludge to increase stabilization for efficient and safe reuse in agriculture

Mancuso, Giuseppe; Langone, Michela; Maggio, R. Di; Toscano, Attilio; Andreottola, Gianni

doi:10.1080/10889868.2021.1900055

Cited by 26 publications

(26 citation statements)

References 51 publications

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“…Anaerobic digestion is a biological process used to manage organic waste materials, with the main advantage of producing energy in the form of biogas in addition to a stabilized residue, which can be therefore reused in agriculture [131]. For this reason, anaerobic digestion is nowadays the most used method in WWTPs to treat solubilized organic biomass [132,133].…”

Section: Nitrogen Recovery Strategiesmentioning

confidence: 99%

Diffuse Water Pollution from Agriculture: A Review of Nature-Based Solutions for Nitrogen Removal and Recovery

Mancuso

Bencresciuto

Lavrnić

et al. 2021

Water

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The implementation of nature-based solutions (NBSs) can be a suitable and sustainable approach to coping with environmental issues related to diffuse water pollution from agriculture. NBSs exploit natural mitigation processes that can promote the removal of different contaminants from agricultural wastewater, and they can also enable the recovery of otherwise lost resources (i.e., nutrients). Among these, nitrogen impacts different ecosystems, resulting in serious environmental and human health issues. Recent research activities have investigated the capability of NBS to remove nitrogen from polluted water. However, the regulating mechanisms for nitrogen removal can be complex, since a wide range of decontamination pathways, such as plant uptake, microbial degradation, substrate adsorption and filtration, precipitation, sedimentation, and volatilization, can be involved. Investigating these processes is beneficial for the enhancement of the performance of NBSs. The present study provides a comprehensive review of factors that can influence nitrogen removal in different types of NBSs, and the possible strategies for nitrogen recovery that have been reported in the literature.

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Section: Nitrogen Recovery Strategiesmentioning

confidence: 99%

Diffuse Water Pollution from Agriculture: A Review of Nature-Based Solutions for Nitrogen Removal and Recovery

Mancuso

Bencresciuto

Lavrnić

et al. 2021

Water

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“…A large amount of energy will be released to the surrounding liquid in the process of the bubble collapse, and the instantaneous high temperature (1000–5000 K) and high pressure (1–5 × 10 7 Pa) will produce the following effects: (1) mechanical effects, (2) chemical effects, and (3) thermal effects. These effects play a positive role in the degradation of pollutants. − However, the order of the three effects on the cavitation degradation effect is still unclear.…”

Section: Introductionmentioning

confidence: 99%

Effect of Bubble Collapse Combined with Oxidants on the Benzamide by Molecular Dynamics Simulation

Zhu

et al. 2022

Ind. Eng. Chem. Res.

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The combined use of hydrodynamic cavitation technology and H2O2 to treat organic wastewater can not only reduce the treatment time and energy consumption but can also achieve better degradation effects. Models containing different concentrations of H2O2 are established in this study to grasp the effect of H2O2 concentration on the bubble collapse process and benzamide degradation and the relationship among the mechanical, thermal, and chemical effects in the degradation stage. The transferable interatomic potential with the four-point model by the force balance method and the reactive force field are used to investigate the pressure field variation of bubble collapse and degradation efficiency. Results show that the total pressure released and the force on the upper and lower wall surfaces of the benzamide gradually increase with the rise in the H2O2 concentration when the bubble collapses, and the pressure difference between the upper and lower walls of benzamide decreases. The dynamic mean square displacement and diffusion coefficient of water molecules increase, and this condition is beneficial to the transport of hydroxyl ions (•OH). The benzamide molecule is subjected to mechanical force in the time period of 0–0.5 ps. The mechanical, thermal, and chemical effects work together on the molecular structure of benzamide in the time period of 0.5–4 ps. The effect of hydrodynamic cavitation technology combined with H2O2 on the degradation process of benzamide is explored by means of molecular dynamics simulation. This study deepens people’s understanding of cavitation theory and provides technical guidance and theory for the realization of harmless treatment of benzamide.

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“…Highly reactive hydroxyl radicals (•OH) [16] , [17] generated from the homolytic cleavage of H 2 O molecules could oxidize important constituents of microalgae and remove algal toxin released from the ruptured algal cells. Hydrodynamic cavitation has been successfully implemented in various applications with the main concern of environmental protection, such as the stabilization and safe reuse of sewage sludge [18] , [19] , [20] , [21] . Therefore, hydrodynamic cavitation, with the highly reactive hydroxyl radical's generation, may be also implemented for the algal removal in polluted water [22] .…”

Section: Introductionmentioning

confidence: 99%

Removal of field-collected Microcystis aeruginosa in pilot-scale by a jet pump cavitation reactor

Wang

Chen

et al. 2022

Ultrasonics Sonochemistry

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Highlights Jet pump cavitation reactors inhibited the photosynthetic activity and growth of M. aeruginosa. Jet pump cavitation reactors caused serious rupture to M. aeruginosa cells. Plausible cell disruption mechanisms were proposed with fluorescence microscope and SEM. The algal cell disruption efficiency was improved by optimizing flow conditions.

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Effect of hydrodynamic cavitation on flocs structure in sewage sludge to increase stabilization for efficient and safe reuse in agriculture

Cited by 26 publications

References 51 publications

Diffuse Water Pollution from Agriculture: A Review of Nature-Based Solutions for Nitrogen Removal and Recovery

Diffuse Water Pollution from Agriculture: A Review of Nature-Based Solutions for Nitrogen Removal and Recovery

Effect of Bubble Collapse Combined with Oxidants on the Benzamide by Molecular Dynamics Simulation

Removal of field-collected Microcystis aeruginosa in pilot-scale by a jet pump cavitation reactor

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