摘要
我国庞大的吸烟人口造成大量的烟尾及烟灰废弃物,利用烟灰的吸附性能及含有的碱性成分对蓖麻油进行脱色脱酸处理,实现固废再利用。实验首先对吸烟室收集来的烟灰进行煅烧处理以除去未充分燃烧的烟叶及烟油,考察煅烧温度对烟灰灰分形貌及含量影响;然后将处理后的烟灰按不同比例加入到蓖麻油中,通过酸碱滴定酸值测定法考察烟灰用量、温度、时间等工艺条件对脱酸效果的影响,并通过紫外分光光度计对比处理前后油样的吸光度,考察烟灰对脱色效果的影响。实验结果确定了最优的烟灰煅烧温度为800℃,适宜的脱酸脱色操作条件为烟灰用量5%(质量分数)、反应温度50℃、操作时间30 min;在此操作条件下,蓖麻油酸值由5.02 mg KOH·g^(-1)降低至1.55 mg KOH·g^(-1),脱色率为6.65%。综上所述,处理后烟灰可用于蓖麻油脱色脱酸工艺。
The huge smoking population in China has caused a large number of cigarette tail and ash waste.The adsorption property of cigarette soot and its alkaline components could be used to decolorize and deacidify castor oil and realize the purpose of solid waste recycling.In the experiment,the soot collected in the smoking room was first calcined to remove the incompletely burned tobacco leaves and e-liquid,and the effect of the calcination temperature on the morphology and content of the soot was investigated.Then,the treated soot was added to castor oil in different proportions,and the effect of soot dosage,temperature,time and other process conditions on the deacidification effect was investigated by acid-base titration acid value determination method.The absorbance of oil samples before and after treatment was compared by ultraviolet spectrophotometer to investigate the influence of soot on the decolorization effect.The test results determined that the optimal soot calcination temperature was 800℃,and the suitable deacidification and decolorization operating conditions were the soot dosage of 5%,the reaction temperature of 50℃,and the operation time of 30 min.Under this operating condition,the ricinoleic acid value was reduced from 5.02 mg KOH·g^(-1) to 1.55 mg KOH·g^(-1),and the decolorization rate was 6.65%.In conclusion,the treated soot can be used in castor oil decolorization and deacidification process.
作者
管述哲
刘宣池
陈俊丹
胡潇丹
沈天齐
姚欢峻
GUAN Shu-zhe;LIU Xuan-chi;CHEN Juan-dan;HU Xiao-dan;SHEN Tian-qi;YAO Huan-jun(Green Messenger Air Environment Technology Co.,Ltd.,Urumqi Xinjiang 830000,China;Collaborative Innovation Center for High Value Transformation of Coal Chemical Process By-products,School of Chemical and Environmental Engineering,Xinjiang Institute of Engineering,Urumqi Xinjiang 830023,China)
出处
《当代化工》
CAS
2023年第12期2814-2818,共5页
Contemporary Chemical Industry
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)。
关键词
烟灰
吸附
脱酸
脱色
Cigarette soot
Adsorbent
Deacidification
Decolorization
