Daniely Reis Santos1, Otávio da Mata Cunha1, Márcia Cristina Bisinoti1, Odair Pastor Ferreira2, Altair Benedito Moreira1, Camila Almeida Melo3. 1. 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, 2265, São José do Rio Preto, São Paulo State, 15054-000, Brazil. 2. Laboratório de Materiais Funcionais Avançados (LaMFA), Departamento de Física, Universidade Federal do Ceará, P.O. Box 6030, Fortaleza, Ceará, 60455-900, Brazil. 3. 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, 2265, São José do Rio Preto, São Paulo State, 15054-000, Brazil. camila.sjrp@gmail.com.
Abstract
Hydrothermal carbonization transforms biomass into value-added material called hydrochar. The release of nutrients (P, N, Ca, Mg, and K) and organic carbon (TOC) from hydrochar in different extractive solutions was investigated in this study. Two sets of hydrochar were produced: (i) hydrochar prepared from sugarcane bagasse and vinasse mixture (BV-HC) and (ii) hydrochar prepared by the addition of H3PO4 to this mixture (BVA-HC). Both hydrochar types released significative amounts of nutrient and organic carbon, mainly Ca (5.0 mg g-1) in the mixture (KCl, K2SO4, NaOH, 1:1:1) extractive solution and TOC (72.6 mg g-1) in the NaOH extractive solution, for BV-HC. Nutrient release was influenced by pH and ionic strength. The release of P, Ca, and Mg was affected by the presence of insoluble phosphate phases in BVA-HC. The release of nutrients P, N, Ca, Mg, and K and organic carbon demonstrated that hydrochar has potential for soil application purposes.
Hydrothermal pan class="Chemical">carbonization transforms biomass into value-added material called hydrochar. The release of nutrients (n>an class="Chemical">P, N, Ca, Mg, and K) and organic carbon (TOC) from hydrochar in different extractive solutions was investigated in this study. Two sets of hydrochar were produced: (i) hydrochar prepared from sugarcane bagasse and vinasse mixture (BV-HC) and (ii) hydrochar prepared by the addition of H3PO4 to this mixture (BVA-HC). Both hydrochar types released significative amounts of nutrient and organic carbon, mainly Ca (5.0 mg g-1) in the mixture (KCl, K2SO4, NaOH, 1:1:1) extractive solution and TOC (72.6 mg g-1) in the NaOH extractive solution, for BV-HC. Nutrient release was influenced by pH and ionic strength. The release of P, Ca, and Mg was affected by the presence of insoluble phosphate phases in BVA-HC. The release of nutrients P, N, Ca, Mg, and K and organic carbon demonstrated that hydrochar has potential for soil application purposes.
Authors: Nicole D Berge; Kyoung S Ro; Jingdong Mao; Joseph R V Flora; Mark A Chappell; Sunyoung Bae Journal: Environ Sci Technol Date: 2011-06-14 Impact factor: 9.028
Authors: Hongbo Li; Xiaoling Dong; Evandro B da Silva; Letuzia M de Oliveira; Yanshan Chen; Lena Q Ma Journal: Chemosphere Date: 2017-03-24 Impact factor: 7.086
Authors: Rachhpal S Jassal; Mark S Johnson; Marina Molodovskaya; T Andrew Black; Ashlee Jollymore; Kelly Sveinson Journal: J Environ Manage Date: 2015-01-23 Impact factor: 6.789
Authors: Nina Eibisch; Mirjam Helfrich; Axel Don; Robert Mikutta; Andrea Kruse; Ruth Ellerbrock; Heinz Flessa Journal: J Environ Qual Date: 2013-09 Impact factor: 2.751