皇竹草混合厨余沼渣制备生物炭对废水中Pb<sup>2+</sup>的吸附研究

杨改秀; 梅文杰; 艾虹豆; 陈家敏; 柴剑飞; 宋梁; 吴彬; 郑志勇; 刘润雨

doi:10.13205/j.hjgc.202607016

皇竹草混合厨余沼渣制备生物炭对废水中Pb²⁺的吸附研究

doi: 10.13205/j.hjgc.202607016

杨改秀^1,2,
梅文杰²,
艾虹豆²,
陈家敏²,
柴剑飞³,
宋梁⁴,
吴彬⁵,
郑志勇⁶,
刘润雨^4, ,

1. 西藏大学生态环境学院, 拉萨 850000;
2. 中国科学院广州能源研究所城乡矿山集成研究室中国科学院可再生能源重点实验室, 广州 510640;
3. 福建理工大学, 福州 350118;
4. 福州大学, 福州 350108;
5. 中国核工业华兴建设有限公司, 福建漳州 363500;
6. 福建省泷澄建设集团有限公司, 福建漳州 363199

基金项目:

河南省重点研发专项项目（241111321700）

详细信息

作者简介:
杨改秀（1984—），女，博士，主要研究方向为生物质绿色高值化转化与利用等。yanggx@ms.giec.ac.cn

通讯作者:
刘润雨（1997—），男，博士，主要研究方向为固废资源化和生物炭材料制备等。liurunyu141997@163.cm

计量
- 文章访问数: 4
- HTML全文浏览量: 0
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2026-03-30
- 网络出版日期: 2026-09-01

Preparation of biochar from co-pyrolysis of Napier grass and food waste digestate for Pb²⁺ removal from wastewater

1. College of Ecology and Environment, Xizang University, Lhasa 850000, China;
2. CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China;
3. Fujian University of Technology, Fuzhou 350118, China;
4. Fuzhou University, Fuzhou 350108, China;
5. China Nuclear Industry Huaxing Construction Co., Ltd., Zhangzhou 363500, China;
6. Fujian Longcheng Build Group Co., Ltd., Zhangzhou 363199, China

摘要

摘要: 铅（Pb）是一种对环境和人体健康，特别是儿童健康构成严重威胁的有毒物质，它可以在人体内累积，对多个器官和系统造成损害。开发低成本Pb高效吸附材料具有重要现实意义。以皇竹草、厨余沼渣及其混合物为原料热解制备生物炭为研究对象，探究其对水中Pb²⁺的吸附性能与机理。通过吸附动力学和吸附等温线模拟拟合，并结合FTIR、SEM-EDS等表征手段进行深入分析。结果表明：不同皇竹草、厨余沼渣比例混合制备的生物炭对Pb²⁺的吸附性能差异显著，其中，m（皇竹草）∶m（厨余沼渣）=3∶1时效果最佳，纯皇竹草次之。此外，在pH=6的条件下，吸附量于0~180 min内快速增加，并在360 min时达到平衡。在不同初始浓度下，生物炭吸附量随着初始浓度的增加而增加，当初始浓度>400 mg/L时，吸附量趋于平稳。总而言之，该混合生物炭具有制备简单、成本低廉、较高的吸附容量等特点，可为重金属污染治理提供数据支持和理论依据。
- 皇竹草 /
- 厨余沼渣 /
- 生物炭 /
- 吸附 /
- 重金属去除
Abstract: Lead （Pb） is a toxic heavy metal that poses a severe threat to the environment and human health， particularly to children. It can accumulate in the human body and cause damage to multiple organs and systems. Therefore， developing low-cost and highly efficient adsorbent materials for lead removal is of great significance. In this study， biochars were prepared by pyrolysis of Napier grass， food waste digestate， and their mixtures， and their adsorption performance and mechanisms for Pb²⁺ in water were investigated. Adsorption kinetics and isotherms were simulated and fitted， combined with characterization techniques such as FTIR and SEM-EDS for in-depth analysis. The results showed that the adsorption performance for Pb²⁺ varied significantly with different biochar mixing ratios， with the mass ratio of Napier grass and food waste digestate at 3∶1 exhibiting the optimal effect， followed by pure energy cane. Furthermore， at pH 6， the adsorption capacity increased rapidly within 0 to 180 min and reached equilibrium at 360 min. As the initial Pb²⁺ concentration increased， the adsorption capacity increased accordingly and leveled off when the initial concentration exceeded 400 mg/L. In conclusion， the mixed biochar is characterized by simple preparation， low cost， and high adsorption capacity， providing data support and a theoretical basis for heavy metal pollution remediation.
- Napier grass /
- food waste digestate /
- biochar /
- adsorption /
- heavy metal removal

HTML全文

参考文献(23)

[1]	WANG Y，ZHANG T，WANG X. Removal mechanism of lead by the composite of clinoptilolite，biochar，and Ca（OH）₂ and its application in acid wastewater[J]. Environmental Technology& Innovation，2023，11（2）：109403.
[2]	MARTINEZ-GARCIA G，JOHNSON A C，BACHMANN R T，et al. Anaerobic treatment of olive mill wastewater and piggery effluents fermented with Candida tropicalis[J]. J Hazard Mater，2009，164（2/3）：1398-1405.
[3]	WU M G，CHEN B，TIAN J，et al. Catalytic co-pyrolysis of biomass and waste plastics to produce aromatics：recent advances in catalyst and reaction mechanism research[J]. Science in China：Chemistry，2026. 56（3）：935-952. 吴梦鸽，陈彬，田间，等生物质与废塑料催化共热解制芳烃：催化剂与反应机理研究进展[J]. 中国科学：化学，2026，56（3）：935-952.
[4]	ZHAO X，XIONG H，SONG K，et al. A systematic comparison of Cu（II）adsorption behavior and mechanism between biomass fly ash and biogas residue pyrolysis char[J]. Bioresource Technology Reports，2024，28：101959.
[5]	WANG S H. Preparation of high-adsorption-capacity magnetic shrimp shell biochar and a study of its adsorption performance for Cu（II）and Pb（II）[D]. Haikou：Hainan University，2021. 王诗涵. 高吸附性能磁性虾壳生物炭的制备及其对Cu（Ⅱ）、Pb（Ⅱ）吸附性能研究[D]. 海口：海南大学，2021.
[6]	MELILA M，RAJARAM R，GANESHKUMAR A，et al. Assessment of renal and hepatic dysfunction by co-exposure to toxic metals（Cd，Pb）and fluoride in people living nearby an industrial zone[J]. J Trace Elem Med Biol，2022，69：126890.
[7]	GENG Q，ZHAO Y J，MO L P，et al.，A Study on the adsorption performance of KOH-modified biochar from food waste digestate residue towards lead in water[J]. Journal of Nanning Normal University（Natural Science Edition），2026，43（2）：1-16. 耿庆，赵银军，莫莉萍，等. KOH改性餐厨沼渣生物炭对水中铅的吸附性能研究[J]. 南宁师范大学学报（自然科学版），2026. 43（2）：1-16.
[8]	ZHANG Y C，FU X M，ZHAO G Y，et al. A study on the effect of acid washing and decalcification on the adsorption performance of activated carbon in sludge[J]. Applied Chemistry，2022，51（9）：2521-2526. 张轶宸，付兴民，赵国莹，等. 酸洗脱灰对污泥活性焦吸附性能影响的研究[J]. 应用化工，2022. 51（9）：2521-2526.
[9]	TIAN K S. Study on the co-pyrolysis of oil-contaminated sludge and biomass and the adsorption properties of the resulting semi-coke[D]. Jingzhou：Yangtze University，2022 田昆山. 含油污泥与生物质共热解及剩余半焦吸附性研究[D]. 荆州：长江大学，2022.
[10]	WANG Y，PENG Z，LI Y，et al. An interconnected NaTi₂（PO₄）₃/carbon composite from an all-integrated framework with chelating Ti in a cross-linked citric acid-organic phosphonic acid skeleton for high-performance sodium storage[J]. J Colloid Interface Sci，2022，626：1-12.
[11]	LIU L，LIU W B，QING M X，et al. Research on the remediation performance of kitchen waste biochar on heavy metal pollution[J]. Journal of Engineering Thermophysics，2025，46（3）：1017-1025. 刘亮，刘文斌，卿梦霞，等. 餐厨垃圾生物炭对重金属污染修复性能研究[J]. 工程热物理学报，2025. 46（3）：1017-1025.
[12]	CHEN Q K，WANG H，FAN J P，et al. Effect of co-pyrolysis of agricultural and forestry wastes on Cu（II）adsorption performance of sludge biochar[J]. Applied Chemical Industry，2024，53（4）：774-780. 陈晴空，王欢，范剑平，等. 农林废弃物共热解对污泥生物炭Cu（Ⅱ）吸附性能的影响[J]. 应用化工，2024，53（4）：774-780.
[13]	全国煤炭标准化技术委员会（SAC/TC 42）. 固体生物质燃料工业分析方法：GB/T 28731—2012[S]. 北京：中国标准出版社，2012. National Technical Committee on Coal Standardization（SAC/TC 42）. Proximate analysis method for solid biofuels：GB/T 28731—2012[S]. Beijing：China Standard Press，2012.
[14]	全国煤炭标准化技术委员会. 煤中碳和氢的测定方法：GB/T 476—2008[S]. 北京：中国标准出版社，2008. National Technical Committee on Coal Standardization. Determination of carbon and hydrogen in coal：GB/T 476-2008[S]. Beijing：China Standard Press，2008.
[15]	MENG J L，WANG Y，ZHANG Q F，et al. Pore network model for low-temperature nitrogen adsorption-desorption in mesoporous materials[J]. CIESC Journal，2023，74（2）：893-903. 孟金琳，汪宇，张群锋，等. 介孔材料低温氮气吸脱附的孔道网络模型[J]. 化工学报，2023，74（2）：893-903.
[16]	AHMADIJOKANI F，TAJAHMADI S，BAHI A，et al. Ethylenediamine-functionalized Zr-based MOF for efficient removal of heavy metal ions from water[J]. Chemosphere，2021，264（Pt 2）：128466.
[17]	CHEN S，QIN C，WANG T，et al. Study on the adsorption of dyestuffs with different properties by sludge-rice husk biochar：Adsorption capacity，isotherm，kinetic，thermodynamics and mechanism[J]. Journal of Molecular Liquids，2019，285：62-74.
[18]	HAN L，QIAN L，LIU R，et al. Lead adsorption by biochar under the elevated competition of cadmium and aluminum[J]. Sci Rep，2017，7（1）：2264.
[19]	TAN X F，LIU Y G，GU Y L，et al. Biochar-based nano-composites for the decontamination of wastewater：a review[J]. Bioresour Technol，2016，212：318-333.
[20]	ZHU Y，TANG M，ZHANG H，et al. Water and the cation-π interaction[J]. Journal of the American Chemical Society，2021，143（31）：12397-12403.
[21]	ZUO X，LIU Z，CHEN M. Effect of H₂O₂ concentrations on copper removal using the modified hydrothermal biochar[J]. Bioresour Technol，2016，207：262-267.
[22]	LIU Y，CHEN Y，LI Y，et al. Elaborating the mechanism of lead adsorption by biochar：considering the impacts of water-washing and freeze-drying in preparing biochar[J]. Bioresource Technology，2023，369：128429.
[23]	ZHANG J，SHAO J，JIN Q，et al. Sludge-based biochar activation to enhance Pb（II）adsorption[J]. Fuel，2019，253：629-636.