The effect of pre-treatment and anaerobic digestion for pathogens reduction in agricultural utilization of sewage sludge

Environmental Science and Pollution Research, Год журнала: 2022, Номер 30(5), С. 13801 - 13810

Опубликована: Сен. 23, 2022

The aim of the research work was to explain possibilities application waste activated sludge (WAS) pretreatment processes prior anaerobic digestion (mesophilic fermentation). Hydrodynamic disintegration and freezing/thawing methods were used. Based on microbiological parasitological analyses, a significant decrease in pathogenic bacteria, coliphages, parasite eggs observed. number bacteria analyzed (Salmonella sp., Escherichia coli, Clostridium perfringens) coliphages reduced from 19.3to 42.3% after hydrodynamic cavitation. A similar effect achieved for destruction by with dry ice between 7.8 14.9%. effectiveness reduction (Ascaris Trichuris Toxocara sp.) these ranged 10.7 29.3%. highest results observed hybrid method (hydrodynamic cavitation + disintegration) caused synergistic effect. Salmonella sp. 1 gd.w. about 69.7%, E. coli 70.0%, perfringens 38.4%, 48.2%. Disruption WAS led helminth Ascaris (63.8%), (64.3%), (66.4%). After under mesophilic conditions, an additional bacterial pathogens introduction disintegrated fermentation chamber resulted higher efficiency (from 23%) comparison control sample (70%WAS 30%DS (inoculum-digested sludge)).

Язык: Английский

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Ultrasonication as anaerobic digestion pretreatment to improve sewage sludge methane production: Performance and microbial characterization

Journal of Environmental Sciences, Год журнала: 2023, Номер 146, С. 15 - 27

Опубликована: Май 1, 2023

Язык: Английский

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Advances, challenges, and prospects in microalgal-bacterial symbiosis system treating heavy metal wastewater

Chemosphere, Год журнала: 2023, Номер 345, С. 140448 - 140448

Опубликована: Окт. 13, 2023

Язык: Английский

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NaGdF₄:Yb,Er@ZIF‐8/MnO₂ for photocatalytic removal of organic pollutants and pathogenic bacteria

EcoMat, Год журнала: 2023, Номер 6(1)

Опубликована: Дек. 3, 2023

Abstract In the field of environmental science, efficient removal organic pollutants and pathogenic bacteria from wastewater using a photocatalytic process that responds to full spectrum sunlight is crucial. this study, highly effective nanoheterojunction called NaGdF 4 :Yb,Er@zeolitic imidazolate framework‐8/manganese dioxide (NaGdF :Yb,Er@ZIF‐8/MnO 2 , UCZM) was synthesized. This exhibits remarkable ability respond entire range ultraviolet, visible, infrared light. Under simulated sunlight, UCZM demonstrated outstanding performance in degrading malachite green dye, with degradation efficiency 92.6% within 90 min. Moreover, completely inactivated both Staphylococcus aureus Escherichia coli 20 min under sunlight. Mechanistic studies revealed :Yb,Er played crucial role activating ZIF‐8 MnO through Förster resonance energy transfer, facilitating process. The formation Z‐type heterojunction promoted separation photogenerated carriers. Furthermore, exhibited excellent biosafety properties. study represents first exploration composite material composed UCNPs, ZIF‐8, for applications. findings highlight potential novel design, which spectral response, tackling water pollution inactivation bacteria. image

Язык: Английский

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Antibacterial performance of cationic quaternary phosphonium-modified chitosan polymer in water

Chinese Chemical Letters, Год журнала: 2023, Номер 35(9), С. 109406 - 109406

Опубликована: Дек. 19, 2023

Язык: Английский

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Bioaerosols dispersed from a typical wastewater treatment plant with a membrane bioreactor: Emission characteristics, source analysis and health risk

Process Safety and Environmental Protection, Год журнала: 2022, Номер 160, С. 976 - 987

Опубликована: Март 5, 2022

Язык: Английский

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Direct, ultrafast, and sensitive detection of environmental pathogenic microorganisms based on a graphene biosensor

Analytica Chimica Acta, Год журнала: 2023, Номер 1279, С. 341810 - 341810

Опубликована: Сен. 9, 2023

Язык: Английский

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Sewage sludge treated with bentonite, vermiculite or biochar can improve soil properties and enhance growth of grasses

Soil Use and Management, Год журнала: 2023, Номер 39(4), С. 1403 - 1421

Опубликована: Июнь 16, 2023

Abstract Sewage sludge treated with 15% bentonite, vermiculite or biochar was evaluated as a soil amendment in comparison to limed and untreated sludge. Seven treatments were established two soils, an acid alkaline, three replications, i.e. 2% addition of vermiculite, lime application sludge, inorganic fertilization no fertilizers (control). Then, the used pot experiment perennial ryegrass ( Lolium perenne L.) test plant. Sludge clay minerals improved pH significantly increased organic matter available nutrients both soils compared control. Although salinity sodicity hazard evidenced, initial alkaline by four‐eight two‐three times, respectively, upon all treatments, especially that Moreover, zinc (Zn) times. Soil total aboveground biomass yield 133%–171% 72%–88%, control enhanced nutrient uptake plants. Furthermore microbial metabolic quotient indicated lack low heavy metal stress soil. After harvests ryegrass, residual effect on salinity, phosphorus (P), Zn boron (B) still persisted. Thus sewage could be applied at rate (≈80 Mg ha −1 ) serve fertilizer for grasses pasture species; however, caution is needed regarding possible P build‐up, phytotoxicity salinization risks.

Язык: Английский

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In-situ rapid cultivation of aerobic granular sludge in A/O bioreactor by using Ca(ClO)2 pretreating sludge

Bioresource Technology, Год журнала: 2024, Номер 410, С. 131278 - 131278

Опубликована: Авг. 14, 2024

Язык: Английский

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Combustion characteristics and NOx release of sludge combustion with coal in a 660 MW boiler

Applied Thermal Engineering, Год журнала: 2024, Номер 258, С. 124749 - 124749

Опубликована: Ноя. 4, 2024

Язык: Английский

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