Journal of Jilin University(Earth Science Edition) ›› 2025, Vol. 55 ›› Issue (1): 245-253.doi: 10.13278/j.cnki.jjuese.20230127

Previous Articles     Next Articles

Removal Performance and Mechanism of Lead in Water by Calcium-Iron Biochar

Zhao Yu1, Liu Peng1,2, Tang Jinping1, Ye Zhihang1, Guo Lin3, Zhou Ziyi1, Feng Yu1   

  1. 1.  School of Environmental Studies, China University of Geosciences （Wuhan）, Wuhan 430074, China
    2.  Hubei Key Laboratory of Yangtze Catchment Environmental, Aquatic Science, China University of Geosciences, 
    Wuhan 430074, China
    3.  Henan Academy of Geology, Zhengzhou 450001, China
  • Received:2023-05-15 Online:2025-01-26 Published:2025-02-07
  • Supported by:
    the Geological and Environmental Project of Local Management of Henan Provincial Geological Bureau (Yudihuan \[2021\] No. 2) and the National Key Research and Development Program of China (2019YFC1803603)

PDF (PC)

10

Abstract: In order to prepare calcium-iron modified biochar, optimize the removal effect of single iron-modified biochar on Pb(Ⅱ), and obtain biochar that can efficiently remove Pb(Ⅱ) from water and is easy to recycle, in this study, poplar and bamboo were used as raw materials to prepare eight kinds of biochar respectively, including poplar biochar (unmodified, FeSO4 modified, CaCO3+FeSO4 modified, CaO+FeSO4 modified) and bamboo biochar (unmodified, FeSO4 modified, CaCO3+FeSO4 modified, CaO+FeSO4 modified). First, the removal efficiency of different biochar on Pb(Ⅱ) in groundwater was evaluated through batch experiments. Then, the fixation mechanism of Pb(Ⅱ) in groundwater was explored by means of scanning electron microscopy (SEM) and X-ray absorption near-edge structure spectroscopy (XANES). The results show that the removal efficiency of Pb(Ⅱ) by calcium-iron (CaCO3+FeSO4, CaO+FeSO4) modified biochars were significantly higher than those by iron (FeSO4) modified biochar. In addition, the removal efficiency of Pb(Ⅱ) by calcium-iron modified biochar with CaO as the calcium source were all greater than 99%. While the removal efficiency of Pb(Ⅱ) by calcium-iron modified poplar biochar and calcium-iron modified bamboo biochar with CaCO3 as the calcium source were 58% and 37% respectively. The removal efficiency of modified biochar on Pb(Ⅱ) from high to low was in the order of CaO+FeSO4 modification, CaCO3+FeSO4 modification, and FeSO4 modification. The surfaces of calcium-iron modified biochar were porous and rough, which was beneficial for the attachment of Pb(Ⅱ) precipitation substances. Through the linear fitting of XANES of Pb(Ⅱ), the stable Pb(Ⅱ) components on the surface of calcium-iron modified biochar, such as basic lead carbonate and lead chlorophosphate, accounted for a higher proportion compared with other types of biochar. Among them, the proportions of basic lead carbonate and lead chlorophosphate on calcium-iron modified poplar biochar were 28% and 34% respectively, and those on calcium-iron modified bamboo biochar were 28% and 30% respectively. The formation of lead precipitates on the surface of biochar may be one of the main pathways for Pb(Ⅱ) removal.

Key words: lead, biochar, iron modification, iron-calcium modification, SEM；XANES, removal efficiency

CLC Number: 

  • X52
[1] Yue Guoli, Li Min, Zhai Wenjian, Yang Changqing, Lü Guojuan, Zhao Huan, .

Discovery, Geological Characteristics, Chronology and Metallogenic Geological Background of Gema Pb Polymetallic Deposit in Tibet [J]. Journal of Jilin University(Earth Science Edition), 2023, 53(5): 1467-1482.

[2] Piao Yunxian, Liu Zairan, Zhang Yu, Li Kelan. Experimental on Removal of Methylene Blue by Laccase and Biochar Encapsulated Copper Alginate Beads [J]. Journal of Jilin University(Earth Science Edition), 2022, 52(6): 2014-2020.
[3] Li Xiaoyan, Zhang Qingwei, Hong Songtao, Yuan Yuting, Yu Jinyan, Pan Libin, Liu Yinghong. Activation and Migration of Heavy Metal Elements in Lead Zinc Ore Tailings Under Different Redox Conditions [J]. Journal of Jilin University(Earth Science Edition), 2022, 52(2): 434-441.
[4] Piao Yunxian, Yao Lan, He Lingzhi, Zhang Yu. Rapid Detection of Microcystin-LR Based on Green Biotemplated Electrode [J]. Journal of Jilin University(Earth Science Edition), 2021, 51(4): 1217-1223.
[5] Wang Sheng, Feng Xiang, Li Bing, Guo Lin, Cao Kun, Liu Peng. Removal of Hexavalent Chromium from Simulated Groundwater by Variety of Iron-Modified and Unmodified Biochars [J]. Journal of Jilin University(Earth Science Edition), 2021, 51(1): 247-255.
[6] Cheng Jialong, Cui Ziliang, Li Jun. Metallogenic Prognosis Model of Xiyi Large Hidden Lead-Zinc Deposit in Baoshan in Western Yunnan Province [J]. Journal of Jilin University(Earth Science Edition), 2020, 50(5): 1450-1461.
[7] Qin Ya, Yang Qijun, Li Cheng, Zhou Shuqi, Xu Haotian. Constraints on Metallogenic Time and Time-Space Serial of Igneous Rocks of Fozichong Ore Field in Guangxi Zhuang Autonomous Region [J]. Journal of Jilin University(Earth Science Edition), 2019, 49(2): 425-444.
[8] Zhang En, Li Mingsong, Lu Huixiong, Li Huaiyuan, Quan Xudong, Wang Bing, Dong Shuangfa. Application of Weight Evidence Method to Lead-Zinc Metallogenic Prognosis in Yichun Area,Heilongjiang Province [J]. Journal of Jilin University(Earth Science Edition), 2017, 47(5): 1419-1428.
[9] Zhang Yan, Han Runsheng, Wei Pingtang, Qiu Wenlong. Fluid Inclusion Features and Physicochemical Conditions of the Kuangshanchang Pb-Zn Deposit, Huize, Yunnan Province [J]. Journal of Jilin University(Earth Science Edition), 2017, 47(3): 719-733.
[10] Hu Gongren, Yu Ruilian, Hu Qichao, Wen Xianhua, Liu Xianrong, Zhang Xilin. Tracing Heavy Metal Sources in the Atmospheric Dustfall Using Stable Lead Isotope [J]. Journal of Jilin University(Earth Science Edition), 2016, 46(5): 1520-1526.
[11] Liu Na, Yang Yadong, Alberto Bento Charrua, Wang Hang, Ye Kang, Lü Chunxin. Optimization of Atrazine Removal from Aqueous Solution by Biochar Using Response Surface Methodology [J]. Journal of Jilin University(Earth Science Edition), 2016, 46(4): 1199-1207.
[12] Chen Suihai, Han Runsheng, Shentu Liangyi, Wu Peng, Qiu Wenlong, Wen Dexiao. Alteration Zoning and Geochemical Element Migration in Alteration Rock of Zhaotong Lead-Zinc Deposit in Northeastern Yunnan Mineralization Concentration Area [J]. Journal of Jilin University(Earth Science Edition), 2016, 46(3): 711-721.
[13] Han Runsheng, Li Bo, Ni Pei, Qiu Wenlong, Wang Xudong, Wang Tiangang. Infrared Micro-Thermometry of Fluid Inclusions in Sphalerite and Geological Significance of Huize Super-Large Zn-Pb-(Ge-Ag) Deposit, Yunnan Province [J]. Journal of Jilin University(Earth Science Edition), 2016, 46(1): 91-104.
[14] Duan Zhiming, Li Guangming, Wang Baodi, Li Yingxu, Huang Yong, Guo Lin, Duan Yaoyao. Geochronology and Its Geological Significance of the Ore-Bearing Porphyry in Chagele Lead-Zinc Deposit in Middle-Gangdese Metallogenic Belt, Tibet [J]. Journal of Jilin University(Earth Science Edition), 2015, 45(6): 1667-1690.
[15] Liu Na, Wang Liu, Qiu Hua, Alberto Bento Charrua, Wang Hang, Wang Rui. Biochar Catalyzed Persulfate Decoloration of Azo Dye Acid Orange 7 [J]. Journal of Jilin University(Earth Science Edition), 2014, 44(6): 2000-2009.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © Journal of Jilin University(Earth Science Edition), All Rights Reserved.
Tel: +86-431-88502374；13756165364　E-mail: xuebao1956@jlu.edu.cn
Powered by Beijing Magtech Co. Ltd