食品工业科技2018，Vol.39Issue(3)：22-27,31,7.DOI:10.13386/j.issn1002-0306.2018.03.005
乌贼墨黑色素对贻贝蒸煮浓缩汁中镉的吸附特性研究
Study on the cadmium adsorption performance of Sepia ink melanin from Mussel cooking juice
摘要
Abstract
The performance of Cd adsorption of Sepia ink melanin from Mussel cooking juice was investigated in the present study.The effect of melanin content,pH,contact time and initial concentration of Cd on Sepia ink melanin from Mussel cooking juice was investigated.These parameters were fitted by using of the kinetic and thermodynamic model.The physical and chemical properties of melanin were characterized by using of scanning electron microscope and Fourier transform-infrared spectroscopy.Finally,the regeneration of Sepia ink melanin to cadmium adsorption was conducted.The results showed that the adsorption equilibrium of Cd was reached after reaction for 45 min at 25 ℃ when 0.10 g Sepia ink melanin was added into 100 mL pH3～6 of Mussel cooking juice at an concentration of 50 mg/L Cd.The maximum cadmium adsorption capacity of was (46.47 ± 0.12) mg/g and the removal rate of cadmium was 93.1％ ± 0.1％ under the optimum conditions.The equilibrium data were well explained by pseudo-second-order kinetic model (R2 =0.998)and fitted Langmuir isotherm.SEM and FT-IR confirmed that the adsorption reaction mainly existed on the surface of the melanin and the major functional groups involved in adsorption reaction was-OH,-NH,-COOH.The cadmium adsorption capacity did not significantly changed after regeneration three times.The present study suggested that Sepia ink melanin is good adsorbed material of cadmium and have good biological regeneration.关键词
乌贼墨黑色素/贻贝蒸煮浓缩汁/镉/吸附动力学/吸附热力学/红外光谱Key words
Sepia ink melanin/Mussel cooking juice/cadmium/adsorption kinetics/thermodynamic/Fourier transform-infrared spectroscopy分类
轻工纺织引用本文复制引用
陈美玉,余娟,陈超,吴宇,朱妍,陈小娥,孙海燕,方旭波,员立萍..乌贼墨黑色素对贻贝蒸煮浓缩汁中镉的吸附特性研究[J].食品工业科技,2018,39(3):22-27,31,7.基金项目
国家级大学生创新创业训练计划项目(201610340004) （201610340004）
浙江省大学生科技创新活动计划暨新苗人才计划项目(2016R411037) （2016R411037）
浙江省基础公益研究计划项目(LGN18C200031) （LGN18C200031）
普陀区科技项目(2016GY105). （2016GY105）
