title: Sorption of ammonium and phosphate from aqueous solution by biochar derived from phytoremediation plants.
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.
authors.affiliation: Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Ningbo Raw Water Group Co., Ltd., Ningbo 315100, China; Indian River Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Fort Pierce, FL 34945, USA; School of Environmental and Resource Sciences, Zhejiang A&F University, Lin'an 311300, China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Zeng
authors.forename: Song-da
authors.initials: SD
authors.lastname: Zhang
authors.forename: Ting-qiang
authors.initials: TQ
authors.lastname: Li
authors.forename: Feng-liang
authors.initials: FL
authors.lastname: Zhao
authors.forename: Zhen-li
authors.initials: ZL
authors.lastname: He
authors.forename: He-ping
authors.initials: HP
authors.lastname: Zhao
authors.forename: Xiao-e
authors.initials: XE
authors.lastname: Yang
authors.forename: Hai-long
authors.initials: HL
authors.lastname: Wang
authors.forename: Jing
authors.initials: J
authors.lastname: Zhao
authors.forename: Muhammad Tariq
authors.initials: MT
authors.lastname: Rafiq
mesh_terms: D000327:Adsorption; D064751:Ammonium Compounds / Q000737:chemistry / Q000302:isolation & purification*; D001673:Biodegradation, Environmental; D002606:Charcoal / Q000737:chemistry*; D010710:Phosphates / Q000737:chemistry / Q000302:isolation & purification*; D010936:Plant Extracts / Q000737:chemistry*; D012996:Solutions / Q000032:analysis / Q000737:chemistry; D014462:Ultrafiltration / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D064751:Ammonium Compounds; D010710:Phosphates; D010936:Plant Extracts; D012996:Solutions; D014874:Water Pollutants, Chemical; C540010:biochar; D002606:Charcoal