小麦秸秆生物炭对水中对乙酰氨基酚的吸附性能研究

Preparation of Wheat Straw Biochar for Acetaminophen Adsorption from Aqueous Solutions

对乙酰氨基酚(Ace)被广泛应用于感冒发热、关节痛、神经痛等症状的治疗,但因其不能被人体完全吸收,有相当一部分Ace通过尿液、粪便等排除体外进入水环境中,从而对水环境安全造成潜在威胁。本文探究了不同生物质原料对生物炭吸附Ace效果的影响,还优化了炭化温度、Ace初始浓度、pH等因素对生物炭吸附Ace效果的影响。通过傅立叶红外光谱(FTIR)表征分析生物炭表面官能团与吸附性能的关系。研究结果表明在最优化条件下(即炭化温度900℃, Ace初始浓度5 mg/L, pH 5.3),小麦秸秆生物炭(WSB)对Ace的吸附效果最佳,去除率达93%。小麦秸秆生物炭可以作为一种有效的水体Ace吸附剂。

Acetaminophen (Ace) is widely used in the treatment of cold, fever, joint pain, neuralgia and other symptoms, because it can not be fully absorbed by the human body, a considerable part of Ace through urine, feces and other excretions into the water environment, thus posing a potential threat to the safety of water environment. In this paper, the effects of different biomass raw materials on the adsorption of Ace by biochar were investigated, and the effects of pyrolysis temperature, initial concentration of Ace, and pH on the adsorption of Ace by biochar were optimized. The relationship between surface functional groups and adsorption properties of biochar was analyzed by Fourier transform infrared spectroscopy (FTIR). The results showed that under the optimal conditions (pyrolysis temperature 900˚C, initial concentration of Ace 5 mg/L, pH 5.3), wheat straw biochar (WSB) had the best adsorption effect on Ace, with a removal rate of 93%. Wheat straw biochar can be used as an effective wastewater Ace adsorbent.