铁磁性氧化镁生物炭对玉米加工废水中氮磷的回收效果

梁嘉琪; 吕媛; 陆茵; 王湘徽; 郑敏; 徐康宁

doi:10.13205/j.hjgc.202009015

铁磁性氧化镁生物炭对玉米加工废水中氮磷的回收效果

doi: 10.13205/j.hjgc.202009015

梁嘉琪¹,
吕媛¹,
陆茵²,
王湘徽³,
郑敏⁴,
徐康宁^1, ,

1. 北京林业大学水体污染源控制技术北京市重点实验室, 北京 100083;
2. 北京国环清华环境工程设计研究院有限公司, 北京 100084;
3. 上海康恒环境股份有限公司, 上海 201703;
4. 昆士兰大学水管理高等研究中心, 昆士兰 4072, 澳大利亚

基金项目:

中央高校基本科研业务费（2017ZY33）；大学生创新创业训练计划项目（S201810022106）；国家水体污染控制与治理科技重大专项（2017ZX07102-001）。

详细信息

作者简介:
梁嘉琪(1998-),女,本科生,主要研究方向为污水资源化处理技术。liangjiaqi_ivy@163.com

通讯作者:
徐康宁(1983-),男,博士,副教授,主要研究方向为污水资源化处理技术。xukangning@bjfu.edu.cn

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出版历程
- 收稿日期: 2019-08-12

RECOVERY OF AMMONIUM AND PHOSPHATE FROM CORN PROCESSING WASTEWATER USING MAGNETIC MgO-BIOCHAR

1. Beijing Key Lab for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing 100083, China;
2. Beijing Guohuan Environmental Engineering Design & Research Institute Co., Ltd, Beijing 100084, China;
3. Shanghai SUS Environment Co., Ltd, Shanghai 201703, China;
4. Advanced Water Management Centre, the University of Queensland, St Lucia 4072, Australia

摘要

摘要: 试验制备了林木废弃物铁磁性氧化镁生物炭（铁镁炭），并探索其对玉米加工废水中氮、磷的同步去除性能。铁镁炭去除氮、磷反应在120 h内可达到平衡；氮、磷的最大理论吸附量分别为50.4，338.9 mg/g。生物炭表征结果表明：在铁镁炭表面生成了镁氧化物及铁氧化物，氨氮回收主要是化学吸附作用，而磷回收则决定于化学吸附与化学沉淀的共同作用。富集氮磷后的铁镁炭可作为氮磷缓释肥加以利用，且不存在显著的铁释放。
- 磁性 /
- 氧化镁生物炭 /
- 氨氮 /
- 磷酸盐 /
- 热解
Abstract: This study investigated the recovery of ammonium and phosphate from corn processing wastewater using magnetic MgO-biochar yielded from wood waste. Kinetics property was studied and the process reached equilibrium within 120 h. The maximum adsorption capacities of ammonium-nitrogen and phosphorus by the magnetic MgO-biochar reached 50.4 mg/g and 338.9 mg/g, respectively. According to the characterization, magnesium and iron oxides formed on the biochar surface. Chemisorption was the dominating mechanism for the recovery of ammonium, while chemisorption and chemical precipitation both responded for the recovery of phosphate using the magnetic MgO-biochar. The magnetic MgO-biochar enriched with ammonium and phosphate was a slow release fertilizer of ammonium and phosphate, while no obvious release of ferric ions was observed.
- magnetic /
- MgO-biochar /
- ammonium /
- phosphate /
- pyrolysis

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参考文献(12)

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