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CLC number: X52

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 2013-11-20

Cited: 28

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Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE B 2013 Vol.14 No.12 P.1152-1161

http://doi.org/10.1631/jzus.B1300102


Sorption of ammonium and phosphate from aqueous solution by biochar derived from phytoremediation plants


Author(s):  Zheng Zeng, Song-da Zhang, Ting-qiang Li, Feng-liang Zhao, Zhen-li He, He-ping Zhao, Xiao-e Yang, Hai-long Wang, Jing Zhao, Muhammad Tariq Rafiq

Affiliation(s):  Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; more

Corresponding email(s):   hopechoil@gmail.com, xyang@zju.edu.cn

Key Words:  Biochar, Nutrient removal, Plant species, Pyrolysis temperature, Water quality



Abstract: 
The study on biochar derived from plant biomass for environmental applications is attracting more and more attention. Twelve sets of biochar were obtained by treating four phytoremediation plants, Salix rosthornii Seemen, Thalia dealbata, Vetiveria zizanioides, and Phragmites sp., sequentially through pyrolysis at 500 °C in a N2 environment, and under different temperatures (500, 600, and 700 °C) in a CO2 environment. The cation exchange capacity and specific surface area of biochar varied with both plant species and pyrolysis temperature. The magnesium (Mg) content of biochar derived from T. dealbata (TC) was obviously higher than that of the other plant biochars. This biochar also had the highest sorption capacity for phosphate and ammonium. In terms of biomass yields, adsorption capacity, and energy cost, T. dealbata biochar produced at 600 °C (TC600) is the most promising sorbent for removing contaminants (N and P) from aqueous solution. Therefore, T. dealbata appears to be the best candidate for phytoremediation application as its biomass can make a good biochar for environmental cleaning.

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