Preparation and application of hydrothermal biochar/geopolymer composite material
The invention discloses a hydrothermal biochar/geopolymer composite material preparation method, which comprises: crushing wheat straw, uniformly mixing with fly ash, adding a potassium hydroxide solution, placing into a stirring device, stirring, and curing to obtain a biochar/geopolymer composite...
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| creator | XIN KAINENG MA LIANJING SONG XUEWEN ZHANG XIAOMIN CHEN TIANXING HE PANYANG |
| description | The invention discloses a hydrothermal biochar/geopolymer composite material preparation method, which comprises: crushing wheat straw, uniformly mixing with fly ash, adding a potassium hydroxide solution, placing into a stirring device, stirring, and curing to obtain a biochar/geopolymer composite material precursor; and performing a hydrothermal carbonization process to obtain the hydrothermal biochar/geopolymer composite material. Wherein the mixing amounts of the straw powder, the potassium hydroxide and the distilled water are respectively 5-35%, 65-85% and 30-90% of the mass of the fly ash, the hydrothermal temperature is 220-260 DEG C, the hydrothermal time is 4 hours, and the hydrothermal medium is a 0-2mol/L potassium hydroxide solution; when the prepared hydrothermal biochar/geopolymer composite material is used for adsorbing and removing lead ions in water and passivating lead in soil in situ, a good effect is shown. The method has the advantages of simple process, low cost, low energy consumption, |
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| subjects | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | Preparation and application of hydrothermal biochar/geopolymer composite material |
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