制备方法对胡麻不同部位生物质炭材料吸附活性的影响

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (4): 1464-1472.

制备方法对胡麻不同部位生物质炭材料吸附活性的影响

徐玮璘¹, 沈宏芳^1,2,3, 阳云飞¹, 段健健¹, 王哲¹, 李清明¹, 张笑^1,2,3, 刘兴泽¹

1.北方民族大学材料科学与工程学院,银川 750021;
2.碳基先进陶瓷制备技术国家地方联合工程研究中心,银川 750021;
3.粉体材料与特种陶瓷省部共建重点实验室,银川 750021

收稿日期:2021-11-28 修回日期:2021-12-27 出版日期:2022-04-15 发布日期:2022-04-27
通讯作者: 沈宏芳,博士,副教授。E-mail:shen_hongfang@nun.edu.cn
作者简介:徐玮璘(2000—),女。主要从事功能纳米粉体的制备及在光催化方面的研究。E-mail:1255819371@qq.com
基金资助:
宁夏自然科学基金(2018AAC03117);宁夏高等学校科研项目(NGY2018-153);宁夏回族自治区区级大学生创新创业训练计划(S2020-11407-001);国家自然科学基金(52104358)

Effect of Preparation Method on Adsorption Activity of Different Part of Hemp Biochar Material

XU Weilin¹, SHEN Hongfang^1,2,3, YANG Yunfei¹, DUAN Jianjian¹, WANG Zhe¹, LI Qingming¹, ZHANG Xiao^1,2,3, LIU Xingze¹

1. School of Materials Science & Engineering, North Minzu University, Yinchuan 750021, China;
2. National and Local Joint Engineering Research Center of Advanced Carbon-Based Ceramics Preparation Technology, Yinchuan 750021, China;
3. Key Lab of Powder Material & Advance Ceramics, Yinchuan 750021, China

Received:2021-11-28 Revised:2021-12-27 Online:2022-04-15 Published:2022-04-27

摘要/Abstract

摘要： 生物质炭是指原料在部分缺氧或绝氧的条件通过特殊方法处理后产生的高度芳香化、高碳和高稳定性的固体产物。同一植物不同部位制备的生物质炭的性能往往具有较大差异,本论文以胡麻为研究对象,以KOH、H₃PO₄为活化剂,对胡麻不同部位(杆、皮、根)进行活化,采用水热炭化法、活化法、炭化-活化法制备生物质炭材料,将产物用于吸附溶液中的罗丹明B(RhB)和亚甲基蓝(MB),进一步评价其吸附活性。利用XRD、SEM、TG-DSC、N₂-BET、UV-Vis等对产物的性能进行分析,探究炭化温度、活化温度以及活化剂种类对生物质炭性能的影响。比较不同条件下制备生物质炭材料的微观形貌、比表面积、孔径以及产率。以胡麻杆为原材料,磷酸为活化剂,炭化温度200 ℃,活化温度820 ℃时,制备的生物质炭孔径分布均匀、数量较多、断面呈管状,且其表面积最高,可达1 247.63 m²/g。该产物对RhB和MB都表现出了良好的吸附能力,在接近1 h时,10 mg/L的RhB溶液就已经全部褪色,吸附率高达100%。

关键词: 胡麻杆, 生物质炭, 活化剂, 吸附, 炭化温度, 磷酸, 炭化-活化法

Abstract: Biochar is a solid product with high aromatization, high carbon and high stability produced by special treatment of raw materials under partial hypoxia or complete deoxygenation. Because the performance of biochar was prepared from different parts of the same plant often different, in this paper, hemp was taken as the research target, KOH and H₃PO₄ were used as activators, to activate the different parts (stem, skin and root) of hemp. Biochar materials from different sources were prepared by hydrothermal carbonization method, activation method and carbonization-activation method. The as-prepared products were used to adsorb rhodamine B (RhB) and methylene blue (MB) solutions, and their adsorption activities were evaluated. XRD, SEM, TG-DSC, N₂-BET, UV-Vis and other characterization methods were used to analyze the properties of the products in order to explore the effects of carbonization temperature, activation temperature and activator type on the properties of biochar. Using flax rod as raw material, phosphoric acid as activator, carbonization temperature 200 ℃, activation temperature 820 ℃, the biochar pores were prepared with uniform distribution, a large number of cross sections in tubular shape. The specific surface area of the biochar is as high as 1 247.63 m²/g. It is also displayed great adsorption capacity for RhB and MB. After nearly 1 h, the 10 mg/L RhB solution has all faded, and the adsorption rate is as high as 100%.

Key words: hemp stem, biochar, activator, adsorption, carbonization temperature, phosphoric acid, carbonization-activation method

中图分类号:

TQ424

徐玮璘, 沈宏芳, 阳云飞, 段健健, 王哲, 李清明, 张笑, 刘兴泽. 制备方法对胡麻不同部位生物质炭材料吸附活性的影响[J]. 硅酸盐通报, 2022, 41(4): 1464-1472.

XU Weilin, SHEN Hongfang, YANG Yunfei, DUAN Jianjian, WANG Zhe, LI Qingming, ZHANG Xiao, LIU Xingze. Effect of Preparation Method on Adsorption Activity of Different Part of Hemp Biochar Material[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(4): 1464-1472.

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