Investigation of a Gas Hydrate Dissociation-Energy-Based Quick-Freezing Treatment for Sludge Cell Lysis and Dewatering

Kim, Woojeong; Lee, Hyung Kae; Kwon, Young‐Nam

doi:10.3390/ijerph16193611

Cited by 3 publications

(3 citation statements)

References 27 publications

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“…The disinfection effect can be evaluated with a live/dead bacterial staining kit (L7012, InvitrogenTM, Waltham, MA, USA), which is used for staining live or dead microbes in the sludge sample. The differences in fluorescence of live and dead cells are based on the permeability of dyes (e.g., DAPI/PI) through cell membranes (Kim et al, 2019) (Santos et al, 2013).…”

Section: економічні інноваціїmentioning

confidence: 99%

“…The effect of the rapid freezing method, using the endothermic reaction of the CO 2 gas hydrate dissociation, applied to sludge cell lysis on the viability of microorganisms in sludge was investigated by (Kim et al, 2019). A gas Hydrate dissociation-energy-based Quick-Freezing treatment (HbQF) was applied for SS cell rupture and dewatering.…”

Section: економічні інноваціїmentioning

confidence: 99%

“…Carbon dioxide and water molecules in sewage create CO 2 gas hydrates, and subsequently the sludge rapidly freezes by releasing the applied pressure. HbQF releases organic materials from sludge floc and microbial cells; reduces cell viability by cell lysis; followed by gravitational settling could be the solution to dewater sludge (Kim et al, 2019).…”

Section: економічні інноваціїmentioning

confidence: 99%

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Economic and Technological Principles of Safe Use of Sewage Sludge in Agriculture

Muter¹

2022

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Topicality. Spreading the philosophy of sustainable development, where activities preserve natural and social resources for use by future generations without harming the business economy, as well as significant increases in the price of chemical fertilizers due to rising gas prices require ways to reduce the chemical burden on agriculture. The trend of abandoning intensive technologies will be exacerbated by economic leverage - European Union regulations are increasingly banning agrochemicals and introducing a "carbon tax". Therefore, the use of sewage sludge as fertilizer for agricultural production is becoming an urgent issue. Therefore, the use of sewage sludge as fertilizer for agricultural production on the basis of economic efficiency is becoming an urgent issue.Aim and tasks. The aim of the article is to consider the economic and technological principles aimed at improving the bioavailability of nutrients and reducing the risk of using biowaste before entering the soil, in the context of the idea of sustainable development.Research results. Sewage sludge (SS) application in agriculture has a beneficial effect on soil organic matter content, sorption capacity and an overall improvement in physical properties. Conversion of SS to a soil amendment can be performed by a broad spectrum of methods, which greatly differ by substrate/amendment composition, treatment time, and physicochemical conditions. Sanitary and epidemiological safety is essential, which is why bio-wastes require processing according to selected technologies that aim to improve the bioavailability of nutrients and reduce hazards before entering the soil. This review provides a more complete overview of the present status of the methods for SS disinfection. The review is focused on i) environmental and legislative aspects of SS application in agriculture; ii) risk factors related to the abundance of bacterial, viral, protozoan and other pathogens in SS and methods of SS hygienization by various physical and chemical treatments; iii) risks of soil pollution with biologically active compounds (e.g., antibiotic resistance genes and other emerging contaminants). For the life cycle assessment, an environmental performance and pathogen risk was considered. The results of such consideration have direct impact on the nature of the applied economic and technological measures. Conclusions and perspectives in this field were formulated, using 102 references, including 49 citations dated by the last five years.Conclusion. Numerous technological approaches on SS treatment have their particular advantages, although disinfection efficiency remains unsatisfactory. Legislative requirements are still based on less resistant indicator organisms. Further comprehensive research on SS treatment should be focused on combination of different physical (especially, thermal) and chemical processes, which would convert SS into a qualitative fertilizer with safe microbiological characteristics. The decrease in energy consumption during drying and the reduction of the management costs of these residues can be relevant economic gains. In general, the application of drying to remove water from sewage sludge should be a balance between energy costs in the process and the management costs without drying.

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Section: економічні інноваціїmentioning

confidence: 99%

Section: економічні інноваціїmentioning

confidence: 99%

Section: економічні інноваціїmentioning

confidence: 99%

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Economic and Technological Principles of Safe Use of Sewage Sludge in Agriculture

Muter¹

2022

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Mobilization of water affecting formation and dissociation of hydrate in clay sediment

Zhang

Chen

Zhang

et al. 2023

Chemical Engineering Journal

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Application of the Sewage Sludge in Agriculture: Soil Fertility, Technoeconomic, and Life-Cycle Assessment

Muter¹,

Dubova²,

Kassien³

et al. 2022

Hazardous Waste Management

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Disposal of sewage sludge, which is a by-product of wastewater treatment, has become one of the greatest challenges of the twenty-first century. Conversion of sewage sludge to a soil amendment can be performed by a broad spectrum of methods, which greatly differ by substrate/amendment composition, treatment time, and physicochemical conditions. The book chapter is focused on (i) environmental and legislative aspects of sewage sludge application in agriculture; (ii) risk factors related to the abundance of pathogens in sewage sludge and methods of SS hygienization; (iii) optimization of the use of SS-derived fertilizers. Application of sewage sludge in combination with mineral fertilizers positively influenced crop growth and soil microbiological activity. An environmental impact of sewage sludge related to its disposal to agricultural areas has been analyzed in terms of global warming, ecotoxicity, and other internationally recognized issues. Narrowly targeted measures may aggravate the situation. Some site-specific factors make sewage sludge unique, hence this specificity must be considered to predict the outcome of its treatment. Determination of these factors remains challenging. Therefore, the complexity of sewage sludge can be reduced by employing integrated biorefinery approaches that will result in circular bioeconomy and industrial ecology solutions.

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Investigation of a Gas Hydrate Dissociation-Energy-Based Quick-Freezing Treatment for Sludge Cell Lysis and Dewatering

Cited by 3 publications

References 27 publications

Economic and Technological Principles of Safe Use of Sewage Sludge in Agriculture

Economic and Technological Principles of Safe Use of Sewage Sludge in Agriculture

Mobilization of water affecting formation and dissociation of hydrate in clay sediment

Application of the Sewage Sludge in Agriculture: Soil Fertility, Technoeconomic, and Life-Cycle Assessment

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