Departamento de Química e Ciências Ambientais, Laboratório de Estudos em Ciências Ambientais, Instituto de Biociências, Letras e Ciências Exatas, UNESP, Universidade Estadual Paulista, Campus São José do Rio Preto, Cristóvão Colombo Street, 2256, São José do Rio Preto, São Paulo State, 15054-000, Brazil.
Laboratório de Materiais Funcionais Avançados (LaMFA), Departamento de Física, Universidade Federal do Ceará, P.O. Box 6030, Fortaleza, Ceará State, 60455-900, Brazil.
Environ Sci Pollut Res Int. 2019 Sep;26(27):27579-27589. doi: 10.1007/s11356-018-1771-2. Epub 2018 Mar 29.
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 LC 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.
水热碳化（HTC）是一种在水介质中进行的热化学过程。它能够将生物质转化为富含碳的固体物质（水炭），并产生液相（工艺水），其中包含未反应的原料和/或碳化反应的化学中间体。本研究的目的是评估由甘蔗工业产生的酒糟和甘蔗渣的 HTC 产生的工艺水的特性，并评估其对海洋（使用卤虫作为模型生物）和陆地环境（通过玉米、生菜和番茄种子发芽研究）的毒性。实验表明，浓缩工艺水完全抑制了玉米、生菜和番茄种子的发芽。另一方面，稀释的工艺水能够刺激玉米和番茄的幼苗，并促进根和茎的生长。对于卤虫，LC 表明工艺水实际上是无毒的；然而，对于 1000mg C/L 的浓度，观察到了形态变化，特别是对卤虫的消化管和触角的损伤。
