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Full-Text Articles in Environmental Engineering
Modelling And Investigating The Impact Of Thermal Hydrolysis Pretreatment On The Anaerobic Co-Digestion Of Sewage Sludges And Food Waste, Amr Ismail
Electronic Thesis and Dissertation Repository
In this study, the impact of thermal hydrolysis pretreatment (THP) on the mono- and co-digestion of thickened waste activated sludge (TWAS) and food waste (FW) was carried out at temperatures of 150, 170, 190, and 210 ˚C for a contact time of 30 min and mixing ratios of 90:10, 70:30, and 50:50 on a volumetric basis in batch anaerobic tests. Thermal hydrolysis influenced the solubilization of the particulate organic constituents of TWAS, reduction in volatile suspended solids (VSS) and particle size with the increase in temperature to 210 ˚C, achieving a reduction in VSS up to 62% and a reduction …
Cellulose Biodegradability And Its Impact On Enhanced Biological Phosphorus Removal, Moustafa Ibrahim Elbahrawi
Cellulose Biodegradability And Its Impact On Enhanced Biological Phosphorus Removal, Moustafa Ibrahim Elbahrawi
Electronic Thesis and Dissertation Repository
Cellulose from toilet paper contributes approximately one third of the influent organic suspended solids (TSS) to wastewater treatment plants and is a key target for resources recovery. Cellulose recovery is beneficial as it reduces the required energy for treatment and biosolids treatment cost. Hence, understanding the hydrolysis of cellulose in wastewater which is mainly affected by temperature and the solids retention time (SRT), is a major key to determine the optimum location for its recovery. In order to assess the impact of temperature and SRT on cellulose degradation, this study investigated the biological aerobic degradation of cellulose in four laboratory-scale …