Preparation method of multifunctional biochar with heavy metal adsorption and organic matter degradation functions and application thereof

• Main Authors: ZHOU ZHI, ZHOU NAN, CHEN HUANLI, ZHONG MEI'E
• Format: Patent
• Language: Chinese; English
• Published: 14.07.2020
• 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

The invention belongs to the technical field of heavy metal and organic pollutant wastewater treatment, and provides a preparation method of multifunctional biochar with heavy metal adsorption and organic matter degradation functions and an application thereof. The preparation method comprises the following steps: pyrolyzing a raw material solution of biomass powder, a catalytic metal source, HPMCand acid in an oxygen-containing atmosphere at the temperature of 100-280 DEG C to obtain the multifunctional charcoal. According to the method according to the invention, the method comprises the following steps: carbonizing a raw material aqueous solution containing biomass powder, HPMC, a catalytic metal source and an acid in an oxygen-containing atmosphere (hydrothermal carbonization under non-closed and oxygen-free conditions) in advance; according to the preparation method, the carbonized product which has a three-dimensional structure and relatively large granularity and is modified with rich active groups ben