甘蔗皮微波碱预处理废液中钙离子去除研究

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英文篇名：Study on Calcium Removal from Effluent of Microwave Alkali Pretreatment of Sugarcane Rind 作者：侯芳 ; 曹卫星 ; 苗宸康 ; 葛文轩 ; 余青 ; 张天利 ; 杨森林 英文作者：HOU Fang;CAO Wei-xing;MIAO Chen-kang;GE Wen-xuan;YU Qing;ZHANG Tian-li;YANG Sen-lin;College of Biological,Chemical Sciences and Engineering,Jiaxing University; 关键词：预处理 ; 甘蔗皮 ; 氢氧化钙 ; 二氧化碳 ; 去除率 英文关键词：pretreatment;;sugarcane bagasse;;calcium hydroxide;;carbon dioxide;;removal efficiency 中文刊名：广州化工 英文刊名：Guangzhou Chemical Industry 机构：嘉兴学院生物与化学工程学院; 出版日期：2019-02-08 出版单位：广州化工 年：2019 期：03 基金：嘉兴学院校级大学生科研训练计划(No:SRT2018B066) 语种：中文; 页：61-64 页数：4 CN：44-1228/TQ ISSN：1001-9677 分类号：X703

摘要

为减弱钙离子对甘蔗皮碱预处理废液厌氧发酵产甲烷的抑制效应,采用CO_2去除该废液中的钙离子。通过单因素试验探讨了温度、CO_2通入量以及时间对钙离子去除率的影响以及溶液p H值、总糖和总酚含量的变化。研究发现当温度为30℃,CO_2通入量为120 m L条件下,预处理废液中p H值为7. 9左右,钙离子去除率最高为64. 45%,总糖损失率8%,总酚去除率60%。结果表明,CO_2可有效去除该预处理废液中的钙离子浓度,同时有效保留了糖分,减少总酚的含量。
        In order to reduce the inhibitory effect of calcium ions on the anaerobic fermentation of sugarcane alkali pretreatment effluent,CO_2 was used to remove calcium ions from the waste liquid. The effects of temperature,CO_2 flow and time on removal rate of calcium ion and p H value,total sugar and total phenol content of the solution were investigated by single factor experiments. The study found that the optimal conditions for calcium removal were as follows: temperature was 30 ℃,the CO_2 flow was 120 m L and the time was 5 min. The pH value,calcium removal efficiency,total sugar loss and total phenol removal efficiency of the effluent were 7. 9,64. 45%,8% and 60%,respectively. The results showed that the use of CO_2 can effectively remove the calcium content in the pretreatment effluent,effectively retain the sugar content and reduce the total phenol content.

引文

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