改性汉麻秸秆炭吸附亚甲基蓝性能研究
Study on the Adsorption Performance of Modified Hemp Straw Biochar for Methylene Blue
尤宏梅 1陆佳 1苏小红 1刘伟1
作者信息
- 1. 黑龙江省能源环境研究院,哈尔滨 150027
- 折叠
摘要
以汉麻秸秆为原料,分别以NaOH、NaHCO3、NaCl作为改性剂制备了3种改性汉麻秸秆生物炭,研究了其对亚甲基蓝的吸附效果,考察了改性剂种类、添加量、pH值、吸附时间、吸附温度、金属离子等因素对改性汉麻秸秆炭吸附水溶液中亚甲基蓝的影响.结果表明,NaHCO3改性的汉麻秸秆炭对水中亚甲基蓝的去除效果最好,在100 mL的10 mg·L-1亚甲基蓝水溶液中加入150 mg吸附剂,氯化钠浓度为0.2 mol·L-1,pH=8,40℃下吸附90 min,水中亚甲基蓝去除率可达95.35％.
Abstract
A new biochar is prepared with hemp straw as raw material,NaOH,NaHCO3,and NaCl as modifiers,and the adsorption effect on methylene blue is studied.The effects of factors,such as biochar modifier,adsorbent addition,pH,adsorption time,adsorption temperature,and metal ions on the adsorption of methylene blue in aqueous solution by modified hemp straw charcoal are investigated.The results showed that NaHCO3 modified hemp straw biochar has the best removal effect on methylene blue in water 150 mg of adsorbent is added into 100 mL 10 mg·L-1 methylene blue aqueous solution.Under 0.2 mol·L-1 NaCl,8 pH value,and 90 minutes adsorption at 40 ℃,the methylene blue removal rate in the water can reach 95.35％.
关键词
汉麻秸秆/生物炭/亚甲基蓝/吸附Key words
Hemp straw/Biochar/Methylene blue/Adsorption引用本文复制引用
基金项目
黑龙江省自然科学基金联合引导项目(LH2021B027)
出版年
2024
NETL
NSTL
万方数据