| Title | New insights into chicken processing wastewater treatment: the role of the microalgae Parachlorella kessleri on nitrogen removal |
|---|---|
| ID_Doc | 9198 |
| Authors | Primo, TARD; Vargas, LB; Alves, RD; Neves, FD; Skoronski, E |
| Title | New insights into chicken processing wastewater treatment: the role of the microalgae Parachlorella kessleri on nitrogen removal |
| Year | 2024 |
| Published | |
| Abstract | Microalgal Technologies have recently been employed as an alternative treatment for high nitrogen content wastewater. Nitrogen is an essential nutrient for microalgae growth, and its presence in wastewater may be an alternative source to synthetic medium, contributing to a circular economy. This study aimed to investigate the effect of using Parachlorella kessleri cultivated in wastewater from the thermal processing of chicken meat. Experiments were performed to obtain the ideal sampling site, inoculum dosage, and contact time. P. kessleri had better growth in the sample from the settling basin. Nitrogen removal was 95% (0,15 mg TNK/10(7) cells) in 9 days, and the final nitrogen concentration was lower than 20 mg/L, and the nitrate concentration was lower than 1 mg/L. However, during the third cycle in the kinetic assay, there was a decline in the microalgae growth, occasioned by the accumulation of nitrite (38,4 mg/L) in the inside of the cell. The study demonstrated that nitrogen concentration is directly related to the cell growth of the algae. Parachlorella kessleri efficiently removed nitrogen from chicken meat thermal processing wastewater and is a potential option for tertiary treatment and valorisation of such effluent as a nitrogen source. [GRAPHICS] . |
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