[Preparation of a novel aminated fungal biomass and its sorption for typical endocrine disruptors].
The fungal biomass of Penicillium chrysogenum was used as raw materials to prepare the sorbent, and polyethylenimine (PEI) was grafted onto the biomass surface in a two-step reaction. The best sorbent was obtained through the optimization experiments. As the PEI-modified biomass was found to possess zero zeta-potential at pH 10.2, the biosorbent is favorable for the removal of anionic pentachlorophenol (PCP), 2,4-dichlorophenoxyacetic acid (2,4-D) and perfluorooctane sulphonate (PFOS) potassium in water. The sorption isotherms of the biomass for three pollutants were well described by Langmuir equation, with a maximum sorption at 342.9 mg PCP, 234.1 mg 2,4-D and 1725.6 mg PFOS per g biomass. The thermodynamic parameters calculated show that the sorption for three pollutants was spontaneous, and the sorption for 2,4-D and PFOS were endothermic, while the sorption for PCP was exothermic.
Ma
Rui
R
POPs Research Center, Department of Environmental Science & Engineering, Tsinghua University, Beijing 100084, China.
Deng
Shu-Bo
SB
Yu
Gang
G
D000327:Adsorption; D018533:Biomass; D052244:Endocrine Disruptors / Q000737:chemistry / Q000378:metabolism*; D010408:Penicillium chrysogenum / Q000737:chemistry / Q000254:growth & development / Q000378:metabolism*; D010416:Pentachlorophenol / Q000737:chemistry / Q000378:metabolism; D011094:Polyethyleneimine / Q000737:chemistry / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000378:metabolism*
D052244:Endocrine Disruptors; D014874:Water Pollutants, Chemical; D011094:Polyethyleneimine; D010416:Pentachlorophenol