Method for simultaneously preparing humic acid liquid fertilizer and heavy metal adsorbent from furfural residues

• Main Authors: XU DEHUA, WANG XINLONG, YAN ZHENGJUAN, ZHOU XIAOHOU, ZHONG BENHE, LI SHUANGQIN
• Format: Patent
• Language: Chinese; English
• Published: 14.06.2024
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; FERTILISERS; FERTILISERS CHARACTERISED BY THEIR FORM; INORGANIC CHEMISTRY; MANUFACTURE THEREOF; METALLURGY; MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a method for simultaneously preparing a humic acid liquid fertilizer and a heavy metal adsorbent from furfural residues, and belongs to the technical field of resource recycling. The method comprises the steps of furfural residue pretreatment, alkali treatment, wet-process phosphoric acid acidolysis, mixing of alkali treatment liquid and acidolysis liquid to obtain humic acid liquid fertilizer, pyrolysis modification of solid obtained after acidolysis to obtain the heavy metal adsorbent and the like. According to the method, the furfural residues are taken as the raw material, so that the liquid fertilizer with relatively high fertilizer efficiency and the heavy metal adsorbent with excellent adsorption performance on heavy metals can be obtained while the quantity of wastes is reduced and the environmental pollution is reduced, and a new way is opened up for recycling the furfural residues. 本发明公开了一种利用糠醛渣同时制备腐殖酸液体肥和重金属吸附剂的方法，属于资源回收利用技术领域，方法包括糠醛渣预处理、碱处理、湿法磷酸酸解、合并碱处理液和酸解液得腐殖酸液体肥、对酸解后的固体进