Toxicity evaluation of process water from hydrothermal carbonization of sugarcane industry by-products

Autor(es)

Fregolente, Lais Gomes ^[1] ; Azevedo Rangel Miguel, Thaiz Batista ^[2] ; Miguel, Emilio de Castro ^[3] ; Melo, Camila de Almeida ^[1] ; Moreira, Altair Benedito ^[1] ; Ferreira, Odair Pastor ^[2] ; Bisinoti, Marcia Cristina ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Dept Quim & Ciencias Ambientais, Lab Estudos Ciencias Ambientais, Inst Biociencias Letras & Ciencias Exatas, UNESP, Campus Sao Jose Rio Preto, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil

^[2] Univ Fed Ceara, Lab Mat Funcionais Avancados LaMFA, Dept Fis, POB 6030, BR-60455900 Fortaleza, Ceara - Brazil

^[3] Univ Fed Ceara, Cent Analit, POB 6030, BR-60455900 Fortaleza, Ceara - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Environmental Science and Pollution Research; v. 26, n. 27, SI, p. 27579-27589, SEP 2019.
• Citações Web of Science: 3

Resumo

Hydrothermal carbonization (HTC) is a thermochemical process carried out in an aqueous medium. It is capable of converting biomass into a solid, carbon-rich material (hydrochar), and producing a liquid phase (process water) which contains the unreactive feedstock and/or chemical intermediates from the carbonization reaction. The aim of this study was to evaluate the characteristics of process water generated by HTC from vinasse and sugarcane bagasse produced by sugarcane industry and to evaluate its toxicity to both marine (using Artemia salina as a model organism) and the terrestrial environment (through seed germination studies of maize, lettuce, and tomato). The experiments showed that concentrated process water completely inhibited germination of maize, lettuce, and tomato seeds. On the other hand, diluted process water was able to stimulate seedlings of maize and tomato and enhance root and shoot growth. For Artemia, the LC50 indicated that the process water is practically non-toxic; however, morphological changes, especially damages to the digestive tube and antennas of Artemia, were observed for the concentration of 1000 mg C L-1. (AU)

• Processo FAPESP: 15/22954-1 - Transporte de metais e caracterização da matéria orgânica natural de rios da região de Itacoatiara, Amazônia
• Beneficiário: Márcia Cristina Bisinoti
• Modalidade de apoio: Auxílio à Pesquisa - Regular