Preparation And Adsorption Properties Of Modified Furfural Residue

Furfural is a widely used in petroleum refining, petrochemical industry, chemicalindustry, medicine, synthetic resin industries in important organic chemical raw materials andchemical solvents, so in the field of fine chemicals is an important category of products. Withthe development of furfural industry in China, The produces is a huge number of furfuralresidue. Therefore, the effective use of furfural residue has become a new research topic.Furfural residues rich in cellulose, which can be used as an adsorbent, adsorption of dyesand heavy metal, the use of epoxy chloropropane and citric acid, preparation of two types ofmodified furfural residue, examines their adsorption of methylene blue solution with nickelion adsorption effect. Epoxy chloropropane optimum modification conditions: reaction time30min, reaction temperature60℃, epichlorohydrin70%concentration, ratio of solid to liquid1:4. Citric acid optimum modification conditions: reaction time60min, reaction temperature80℃,100g/L citric acid concentration, ratio of solid to liquid1:3.In view of agricultural and sideline products processing waste furfural slag resourcecurrent situation, this paper modified furfural slag as adsorbent, studied its effect on water ofdyes and heavy metal adsorption properties. The results showed that: in the studiedconcentration and temperature ranges, modified furfural residue to methylene blue and nickelion adsorption time are respectively suitable60min,30min; adsorbent dosage were0.4g,0.02g, removal rate is respectively99%,95%. With the initial concentration and increasedtemperature, adsorption amount increased. Using Bangham rate equation and Langmuir rateequation for adsorption of methylene blue by fitting the experimental data, the results showthat, the adsorption of methylene blue and nickel ion kinetic behavior were followedBangham rate equation and Langmuir equation describes rule. The adsorption process isspontaneous and endothermic reaction.