印染废水中含有大量难以生物降解的染料,若直接排放,将对水生态系统造成严重破坏。生物炭作为一种高效经济的吸附剂,可有效去除印染废水中的染料,减少对水体环境的污染,从而保护水生态系统。本研究将成本低、来源广的玉米芯经NaOH改性后煅烧制备生物炭,随后将生物炭与羧甲基纤维素交联制得具有高稳定性的生物炭气凝胶,并将该气凝胶应用于亚甲基蓝吸附处理,结果表明该生物炭气凝胶对染料废水表现出良好的吸附性能。
The printing and dyeing wastewater contains a large amount of dyes that are difficult to biodegrade.If it is discharged directly,it will cause serious damage to the water ecosystem.As an efficient and economical adsorbent,biochar can effectively remove dyes from printing and dyeing wastewater,reduce pollution to the water environment,and thus protect the water ecosystem.In this study,corn cobs,which are low-cost and widely available,were modified with sodium hydroxide and then calcined to produce biochar.The biochar was subsequently crosslinked with carboxymethyl cellulose to obtain a highly stable biochar aerogel.The aerogel was applied to the adsorption treatment of methylene blue.The results showed that the biochar aerogel exhibited excellent adsorption performance for dye wastewater.
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基金资助
青海省基础研究计划项目(2023-ZJ-772);青海民族大学2025年大学生创新创业项目(DCXM-2025-115)
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