Silva Thomsen, Lars Bjoern published the artcileHydrothermal liquefaction of sewage sludge; energy considerations and fate of micropollutants during pilot scale processing, HPLC of Formula: 14667-55-1, the main research area is hydrothermal liquefaction sludge micropollutant pilot scale processing wastewater treatment; Hydrothermal liquefaction; Micropollutants; Pharmaceuticals; Sewage sludge; Wastewater; Wastewater treatment.
The beneficial use of sewage sludge for valorization of carbon and nutrients is of increasing interest while micropollutants in sludge are of concern to the environment and human health. This study investigates the hydrothermal liquefaction (HTL) of sewage sludge in a continuous flow pilot scale reactor at conditions expected to reflect future industrial installations. The processing is evaluated in terms of energy efficiency, bio-crude yields and quality. The raw sludge and post-HTL process water and solid residues were analyzed extensively for micropollutants via HPLC-MS/MS for target pharmaceuticals including antibiotics, blood pressure medicine, antidepressants, analgesics, x-ray contrast media, angiotensin II receptor blockers, immunosuppressant drugs and biocides including triazines, triazoles, carbamates, a carboxamide, an organophosphate and a cationic surfactant. The results show that a pos. energy return on investment was achieved for all three HTL processing temperatures of 300, 325 and 350°C with the most beneficial temperature identified as 325°C. The anal. of the HTL byproducts, process water and solids, indicates that HTL is indeed a suitable technol. for the destruction of micropollutants. However, due to the large matrix effect of the HTL process water it can only be stated with certainty that 9 out of 30 pharmaceuticals and 5 out of 7 biocides products were destroyed successfully (over 98% removal). One compound, the antidepressant citalopram, was shown to be moderately recalcitrant at 300°C with 87% removal and was only destroyed at temperatures≥325°C (>99% removal). Overall, the results suggest that HTL is a suitable technol. for energy efficient and value added sewage sludge treatment enabling destruction of micropollutants.
Water Research published new progress about Amides Role: PEP (Physical, Engineering or Chemical Process), PROC (Process). 14667-55-1 belongs to class pyrazines, name is 2,3,5-Trimethylpyrazine, and the molecular formula is C7H10N2, HPLC of Formula: 14667-55-1.