| Texto completo | |
| Autor(es): |
Pompei, Caroline Moco Erba
;
Garcia, Thais Garcia da Silva
;
Bagatini, Inessa Lacativa
;
Bolzani, Hugo Renan
;
da Silva, Gustavo Henrique Ribeiro
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS; v. 93, p. 12-pg., 2026-01-01. |
| Resumo | |
Microalgae photobioreactors are excellent low-cost alternatives for natural wastewater treatment with the potential for reuse. Despite the general knowledge on chemical contamination of water by micropollutants, little is known about the adverse effects of these compounds on the health of aquatic biota and on the operation of microalgae-based systems. This study revealed the influence of 12 selected micropollutants in a wastewater (real) treatment by a flat-panel photobioreactor (outdoors) on both the removal of nutrients and the generation of biomass, as well as on the composition of the main communities of the system (microalgae, cyanobacteria and bacteria). The presence of micropollutants severely inhibited microalgal metabolism, causing the total nitrogen and total phosphorus removal efficiency to decrease from 71 % (control) to 32 % and 36 %, respectively. Biomass productivity also decreased from 11.5 mg TSS L-1 d(-1) to 9.6 mg TSS L-1 d(-1). However, N-NH4 removal remained high at 88 %, suggesting the functional resilience of ammonia-oxidizing bacteria. Additionally, a predictive metabolic pathway for bacteria was investigated, indicating prevailing ammonia oxidation and dehalogenation. Tetradesmus obliquus was the dominant microalga (>95 %) in the photobioreactors. Although no significant difference was observed in the composition of microalgae during the experiments with and without micropollutants, the presence of the 12 selected micropollutants may have inhibited microalgal metabolism during treatment. In relation to bacteria, Patescibacteria seems to be an indicator of the presence of micropollutants. (AU) | |
| Processo FAPESP: | 22/07475-3 - Consórcio microalgas-bactérias: estratégia sustentável para produção de energia renovável e tratamento terciário do esgoto sanitário |
| Beneficiário: | Gustavo Henrique Ribeiro da Silva |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 18/18367-1 - Microalgas como solução para recuperação de nutrientes provenientes de esgoto sanitário de alta carga |
| Beneficiário: | Gustavo Henrique Ribeiro da Silva |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |