title: Development of suitable hydroponics system for phytoremediation of arsenic-contaminated water using an arsenic hyperaccumulator plant Pteris vittata.
abstract: In this study, we found that high-performance hydroponics of arsenic hyperaccumulator fern Pteris vittata is possible without any mechanical aeration system, if rhizomes of the ferns are kept over the water surface level. It was also found that very low-nutrition condition is better for root elongation of P. vittata that is an important factor of the arsenic removal from contaminated water. By the non-aeration and low-nutrition hydroponics for four months, roots of P. vittata were elongated more than 500 mm. The results of arsenate phytofiltration experiments showed that arsenic concentrations in water declined from the initial concentrations (50 μg/L, 500 μg/L, and 1000 μg/L) to lower than the detection limit (0.1 μg/L) and about 80% of arsenic removed was accumulated in the fern fronds. The improved hydroponics method for P. vittata developed in this study enables low-cost phytoremediation of arsenic-contaminated water and high-affinity removal of arsenic from water.
authors.affiliation: a Faculty of Engineer , Tohoku-gakuin University , Tagajo , Japan.
authors.forename: Yi
authors.initials: Y
authors.lastname: Huang
authors.affiliation: a Faculty of Engineer , Tohoku-gakuin University , Tagajo , Japan.
authors.forename: Keisuke
authors.initials: K
authors.lastname: Miyauchi
authors.affiliation: b Graduate School of Environmental Studies, Tohoku University , Sendai , Japan.
authors.forename: Chihiro
authors.initials: C
authors.lastname: Inoue
authors.affiliation: a Faculty of Engineer , Tohoku-gakuin University , Tagajo , Japan.
authors.forename: Ginro
authors.initials: G
authors.lastname: Endo
mesh_terms: D001151:Arsenic / Q000378:metabolism*; D001673:Biodegradation, Environmental; D032495:Pteris / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D014874:Water Pollutants, Chemical; D001151:Arsenic
keywords: Pteris vittata; arsenic hyperaccumulator; arsenic removal; hydroponics; phytoremediation