摘要
以负载型碱性粉煤灰作为脱酸剂对餐厨废油进行脱酸处理,同时去除色素。以酸价为指标,在单因素试验的基础上通过正交试验优化脱色脱酸工艺。结果表明:最佳工艺条件为粉煤灰添加量5%(以分离提纯后的餐厨废油质量计)、操作温度70℃、操作时间60 min。餐厨废油的酸价由2.67降至1.21 mg KOH/g,脱色率为13.03%。结果证实粉煤灰可作为脱色脱酸剂应用于餐厨废油的再生工艺,实现固体废弃物循环再利用。
The loaded alkaline fly ash was used as deacidification agent to deacidify kitchen waste oil and remove pigment at the same time.Taking the acid value as the index,the decolorization and deacidi-fication process was optimized by orthogonal test on the basis of single factor test.The results showed that the optimal process conditions were as follows:the amount of fly ash 5%(based on the mass of kitchen waste oil after separation),the operating temperature 70℃C,andtheoperatingtime60min.Theacid value of the kitchen waste oil decreased from 2.67 to 1.21 mg KOH/g,and the decolorization rate was 13.03%.The results showed that fly ash could be used as decolorization and deacidification agent in the regeneration process of kitchen waste oil to realize the recycling of solid waste.
作者
管述哲
刘宣池
沈天齐
李川江
GUAN Shu-zhe;LIU Xuan-chi;SHEN Tian-qi;LI Chuan-jiang(Key Laboratory of Biobased Applied materials,School of Chemistry and Environmental Engineering,Xinjiang University of Engineering,Urumqi 830091,Xinjiang,China;Green Messenger Air Environment Technology Co.,Ltd.,Urumqi 830000,Xinjiang,China)
出处
《粮食与油脂》
北大核心
2023年第11期69-73,共5页
Cereals & Oils
基金
新疆维吾自治区自治区科技厅自然科学基金面上项目(2022D01A63)
新疆维吾自治区科技厅天山青年计划(2020Q081)
中国博士后研究项目(295355)
大学生创新创业训练计划(S202310994044)。
关键词
脱色
粉煤灰
吸附
脱酸
餐厨废油
decolorization
fly ash
adsorption
deacidification
kitchen waste oil
