Instituto de Biociências, Letras e Ciências Exatas, UNESP, Univ Estadual Paulista, Campus São José do Rio Preto, Departamento de Química e Ciências Ambientais, Laboratório de Estudos em Ciências Ambientais, Cristóvão Colombo, 2265, São José do Rio Preto, São Paulo State 15054-000, Brazil.
Instituto de Biociências, Letras e Ciências Exatas, UNESP, Univ Estadual Paulista, Campus São José do Rio Preto, Departamento de Química e Ciências Ambientais, Laboratório de Estudos em Ciências Ambientais, Cristóvão Colombo, 2265, São José do Rio Preto, São Paulo State 15054-000, Brazil.
Bioresour Technol. 2017 Aug;237:213-221. doi: 10.1016/j.biortech.2017.04.004. Epub 2017 Apr 4.
In this study, nutrients were immobilized on the hydrochars obtained by hydrothermal carbonization (HTC) of a vinasse and sugarcane bagasse mixture, in the presence of acid, base and salt additives at temperatures of 150, 190 and 230°C. The increase in temperature caused higher immobilization of Ca, Mg, K, N, Cu, Mn, Zn, B, P and Fe in all hydrochars produced. HPO and NaOH immobilized higher amounts of P, Mg and Mn, while Ca was immobilized in higher quantities in the presence of HPO and (NH)SO. The addition of HSO, HPO and (NH)SO was responsible for an increased immobilization of P, N, Ca, Mg and K. The immobilization of B, not present in the starting raw material, was possible with the addition of HBO. The results showed that it is possible to alter the reaction medium to immobilize nutrients on hydrochars produced from vinasse and sugarcane bagasse, for agricultural applications.
在这项研究中，通过在 150、190 和 230°C 的温度下，在酸、碱和盐添加剂的存在下，将废糖蜜和甘蔗渣混合物进行水热碳化（HTC）得到的水炭上固定营养物质。温度的升高导致所有产生的水炭中 Ca、Mg、K、N、Cu、Mn、Zn、B、P 和 Fe 的固定率增加。HPO 和 NaOH 固定了更多的 P、Mg 和 Mn，而在 HPO 和 (NH)SO 的存在下，Ca 的固定量更高。HSO、HPO 和 (NH)SO 的添加负责增加 P、N、Ca、Mg 和 K 的固定。B 的固定，在起始原料中不存在，通过添加 HBO 是可能的。结果表明，可以改变反应介质，将营养物质固定在由废糖蜜和甘蔗渣生产的水炭上，用于农业应用。
