Surfactant-assisted thermal hydrolysis of sewage sludge: Biomolecule extraction and its potential for protease production

Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(5), С. 113353 - 113353

Опубликована: Июнь 18, 2024

Efficient management of sewage sludge from wastewater treatment plants (WWTPs) are crucial to obtain industrial value-added products and reducing environmental impact. Thermal hydrolysis, coupled with surfactants enhance solubilisation, offers a promising approach for treatment. This study assessed the impact four surfactants: sodium dodecyl sulphate (SDS), dodecylbenzenesulfonate (SDBS), cetyl trimethyl ammonium chloride (CTAC), tetraethylammonium (TAC) on thermal hydrolysis sludge. The addition anionic (SDS SDBS) significantly increased biomolecule production, proteins, humic-like substances, carbohydrates, DNA concentrations reaching 6018 ± 28 mg/L (306 mg/gVSSo), 2496 103 (127 1822 4 (93 389 3 (20 respectively, after 155 min hydrolysis. Low levels (10 50 mg/gVSSo) also led substantial increase in readily biodegradable fraction hydrolysed sludge, up 90 %. Additionally, surfactant-assisted proved be favourable substrate protease production using Bacillus licheniformis. optimal enzymatic activity 678 14 U/mL was achieved when CTAC added at concentration 10 mg/gVSSo. In summary, this evaluated an innovative solubilisation biomolecules methodology not only positively affected biodegradability but suitable potentially producing valuable like proteases through fermentation B. licheniformis, thus offering new strategy sustainable

Язык: Английский

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Enhancing methane production in anaerobic digestion of waste activated sludge by combined thermal hydrolysis and photocatalysis pretreatment

Bioresource Technology, Год журнала: 2024, Номер 411, С. 131353 - 131353

Опубликована: Авг. 24, 2024

Язык: Английский

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Optimizing anoxic/oxic intervals in intermittent aeration for STHP-AD filtrate treatment: Restoring partial nitrification and community dynamics in the SPNAD system

Chemical Engineering Journal, Год журнала: 2024, Номер 501, С. 157631 - 157631

Опубликована: Ноя. 12, 2024

Язык: Английский

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Thermal Disintegration of Waste-Activated Sludge

Energies, Год журнала: 2024, Номер 17(17), С. 4447 - 4447

Опубликована: Сен. 5, 2024

The effective management of waste-activated sludge (WAS) presents a significant challenge for wastewater treatment plants (WWTPs), primarily due to the sludge’s high content organic matter, pathogens, and hazardous substances such as heavy metals. As urban populations industrial activities expand, increasing volume WAS has intensified need sustainable solutions. Conventional approaches, landfilling anaerobic digestion, are frequently ineffective resource-intensive, particularly when dealing with protective extracellular polymeric (EPS) that render resistant biodegradation. Thermal pretreatment methods have gained attention their ability enhance biodegradability sludge, improve dewaterability, facilitate resource recovery. These processes function by breaking down complex structures within thereby its accessibility subsequent treatments digestion. integration thermal chemical can further optimize process, resulting in higher biogas yields, reduced pathogen content, lower environmental risks. While disintegration is energy-intensive, advancements energy recovery process optimization made it more viable environmentally friendly option. This approach offers pathway efficient practices, which align goals reducing waste complying stricter regulations.

Язык: Английский

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Enhanced methane production from waste-activated sludge via sodium percarbonate-assisted thermal hydrolysis

Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(6), С. 114840 - 114840

Опубликована: Ноя. 17, 2024

Язык: Английский

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Deployment of temperature-specific thermal hydrolysis pretreatment in anaerobic co-digestion of sewage sludge and food waste could augment the economic benefits

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 157835 - 157835

Опубликована: Ноя. 1, 2024

Язык: Английский

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Sulfur hitchhiking on microplastic during dyeing sludge incineration: Simultaneous intensification release of gaseous sulfur and chlorine

Journal of Hazardous Materials, Год журнала: 2024, Номер 483, С. 136673 - 136673

Опубликована: Ноя. 26, 2024

Язык: Английский

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Disintegration of sewage sludge by thermal hydrolysis

Journal of The Korean Society of Water and Wastewater, Год журнала: 2024, Номер 38(6), С. 361 - 384

Опубликована: Дек. 30, 2024

Язык: Английский

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