中国科技核心期刊
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秸秆型生物炭及其对尾矿浸出液中重金属的去除研究
- 作者：
- 卢楠|成生权|李刚|葛磊
- 作者单位：
- 陕西省土地工程建设集团有限责任公司&自然资源部退化及未利用土地整治工程重点实验室&陕西省土地整治工程技术研究中心&陕西地建土地工程技术研究院有限责任公司&陕西省土地整治重点实验室|陕西省土地工程建设集团有限责任公司|陕西省土地工程建设集团有限责任公司&自然资源部退化及未利用土地整治工程重点实验室&陕西省土地整治工程技术研究中心&陕西地建土地工程技术研究院有限责任公司&陕西省土地整治重点实验室|陕西省土地工程建设集团有限责任公司&自然资源部退化及未利用土地整治工程重点实验室&陕西省土地整治工程技术研究中心&陕西地建土地工程技术研究院有限责任公司&陕西省土地整治重点实验室
基金项目：
- 陕西省土地整治重点实验室开放基金项目（2019-JC04）；陕西省土地工程建设集团内部科研项目（DJNY2019-18）
详细信息：
- 作者简介：
- 陕西省土地整治重点实验室开放基金项目（2019-JC04）；陕西省土地工程建设集团内部科研项目（DJNY2019-18）
- 通讯作者：
- isnull
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Research on stalk biochar and the heavy metals removal from tailings leaching solution with it
- English Author：
- Shaanxi Land Engineering Construction Group Co.,Ltd.&Key Laboratory of Degraded and Unused Land Consolidation Engineering,Ministry of Natural Resources&Shaanxi Land Consolidation Engineering Technology Research Center&Institute of Land Engineering and Technology,Shaanxi Land Engineering Construction Group Co.,Ltd.&Shaanxi Key Laboratory of Land Consolidation|Shaanxi Land Engineering Construction Group Co.,Ltd.|Shaanxi Land Engineering Construction Group Co.,Ltd.&Key Laboratory of Degraded and Unused Land Consolidation Engineering,Ministry of Natural Resources&Shaanxi Land Consolidation Engineering Technology Research Center&Institute of Land Engineering and Technology,Shaanxi Land Engineering Construction Group Co.,Ltd.&Shaanxi Key Laboratory of Land Consolidation|Shaanxi Land Engineering Construction Group Co.,Ltd.&Key Laboratory of Degraded and Unused Land Consolidation Engineering,Ministry of Natural Resources&Shaanxi Land Consolidation Engineering Technology Research Center&Institu
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
采用芦苇秆、木薯秆和水稻秆3种常见农业废弃物，在中高温下限氧热解，分别制备得到芦苇秆生物炭（RESB）、木薯秆生物炭（CSB）和水稻秆生物炭（RISB），对其理化性质及表面形貌进行了表征，同时考察了不同吸附时间条件下，3种秸秆型生物炭对尾矿浸出液中4种常见重金属元素（Cr、Ni、Cu和Zn）的吸附能力。结果表明：在相同放大倍数条件下，CSB孔径最大，排列紧密，RESB的孔数最少；RISB表面的活性吸附位点和稳定碳氧复合物数量少于CSB和RESB，且具有更强的疏水性；CSB具有作为尾矿浸出液中Cr、Ni和Cu吸附剂的潜力，RISB对Zn的吸附去除效率更高。
关键词:
秸秆型生物炭；尾矿浸出液；重金属污染；农业废弃物；吸附量
Abstract:
Three common agricultural wastes,including reed stalk,cassava stalk,and rice plant stalk were used to prepare reed stalk biochar (RESB),cassava stalk biochar (CSB) and rice straw biochar (RISB) by oxygen pyrolysis at lower limit at medium-high temperature.The physico-chemical characteristics and surface morphology of the three different biochars were determined.At the same time,the adsorption capacity of the three biochars on four common heavy metal elements (Cr,Ni,Cu and Zn) from tailings leaching solutions were investigated under different adsorption time.The results showed that at the same magnification,CSB has the largest pore size and is closely arranged,while RESB has the least number of holes;the number of active adsorption sites and stable carbon oxygen complexes on the surface of RISB is less than that of CSB and RESB,and it has stronger hydrophobicity;for Cr,Ni and Cu,CSB has the potentials to be adsorbent while for Zn,RISB has higher adsorption and removal efficiency.
Keywords:
stalk biochar;tailings leaching solution;heavy metal pollution;agricultural waste;adsorption volume
