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载镁生物炭对水体中磷酸盐和植酸的吸附性能及机理分析

闫兵刚 胡家玮 姜晓谦 蔚阳 管运涛

闫兵刚, 胡家玮, 姜晓谦, 蔚阳, 管运涛. 载镁生物炭对水体中磷酸盐和植酸的吸附性能及机理分析[J]. 环境工程, 2020, 38(6): 94-101. doi: 10.13205/j.hjgc.202006015
引用本文: 闫兵刚, 胡家玮, 姜晓谦, 蔚阳, 管运涛. 载镁生物炭对水体中磷酸盐和植酸的吸附性能及机理分析[J]. 环境工程, 2020, 38(6): 94-101. doi: 10.13205/j.hjgc.202006015
YAN Bing-gang, HU Jia-wei, JIANG Xiao-qian, YU Yang, GUAN Yun-tao. ADSORPTION PERFORMANCE AND MECHANISM OF PHOSPHATE AND PHYTIC ACID ON MAGNESIUM-LADEN BIOCHAR IN WATER[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(6): 94-101. doi: 10.13205/j.hjgc.202006015
Citation: YAN Bing-gang, HU Jia-wei, JIANG Xiao-qian, YU Yang, GUAN Yun-tao. ADSORPTION PERFORMANCE AND MECHANISM OF PHOSPHATE AND PHYTIC ACID ON MAGNESIUM-LADEN BIOCHAR IN WATER[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(6): 94-101. doi: 10.13205/j.hjgc.202006015

载镁生物炭对水体中磷酸盐和植酸的吸附性能及机理分析

doi: 10.13205/j.hjgc.202006015
基金项目: 

国家水体污染控制与治理科技重大专项(2017ZX07202002)。

详细信息
    作者简介:

    闫兵刚(1993-),男,硕士研究生,主要研究方向为土壤修复。2330498138@qq.com

    通讯作者:

    胡家玮(1982-),男,博士,副教授,主要研究方向为水体污染与治理。hujiaweiyly@hotmail.com

ADSORPTION PERFORMANCE AND MECHANISM OF PHOSPHATE AND PHYTIC ACID ON MAGNESIUM-LADEN BIOCHAR IN WATER

  • 摘要: 水体中磷的大量存在引发了水体富营养化,导致水质逐步恶化、黑臭。为了有效处理水体中的磷(主要有磷酸盐和植酸类),采用成熟竹子为原料、氯化镁为改性剂,以氮气热解法制备载镁生物炭,对水体中磷进行吸附研究,同时实现对生物炭的资源化利用。通过载镁生物炭对无机、有机磷在水体中的动力学实验和解析实验,并结合X射线衍射、扫描电镜、傅里叶变换红外光谱等技术研究了载镁活性炭对磷酸盐及植酸的吸附性能及机理。结果表明:载镁生物炭对两种类型磷的吸附量较单一生物炭均显著提高,对磷酸盐和植酸的吸附平衡量分别达到105,165 mg/g。载镁生物炭对2种磷的吸附动力学均符合准二级动力学拟合方程,吸附等温线符合Langmuir和Freundlich方程,其对有机磷植酸的最大吸附量高于磷酸盐,吸附过程受多种机理共同作用,以化学沉淀吸附为主。此外,吸附过程中载镁生物炭分别与磷酸盐、植酸生成了针状的磷酸镁水合物和非晶态的含镁磷的复合物。
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  • 收稿日期:  2019-11-29

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