Modified biochar and preparation method thereof

• Main Authors: YE HAIQUAN, WANG JIE, YAO MINGSHENG, CAO SHIWEI, XI XIAOSONG, QIAN YITING
• Format: Patent
• Language: Chinese; English
• Published: 12.07.2022
• Subjects: ADHESIVES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; DISPOSAL OF SOLID WASTE; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; RECLAMATION OF CONTAMINED SOIL SOIL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to the technical field of modified biochar, in particular to modified biochar and a preparation method thereof.The raw materials of the modified biochar are waste paper and volcanic mud, and the raw materials are mixed with hydrogen peroxide and ferric oxide for modification for carbonization and pyrolysis to obtain the biochar. The preparation method comprises the following steps: S1, pretreating waste paper into powder; s2, dipping the pretreated waste paper powder into a mixed suspension of hydrogen peroxide and ferric oxide, and heating and drying; and S3, adding volcanic mud into the substance obtained by drying in the step S2, uniformly mixing, and performing pyrolysis to obtain the modified charcoal. The waste paper scraps are effectively utilized, and the prepared modified biochar is large in specific surface area and high in adsorption capacity. 本发明涉及改性生物炭技术领域，尤其是指一种改性生物炭及其制备方法，所述改性生物炭的原料为废纸和火山泥，通过与双氧水及氧化铁混合改性进行炭化热解制得生物炭。其制备方法包括以下步骤：S1，将废纸进行预处理成粉末；S2，将预处理后的废纸粉末浸渍到双氧水和氧化铁的混合悬液中，加