Biomass reduction and arsenic transformation during composting of arsenic-rich hyperaccumulator Pteris vittata L.

Abstract

Results from this study indicate that composting As-rich fern significantly reduced its biomass, As content, and water-soluble As. It seems that composting can be an effective step for treating As-rich biomass before disposal in landfill.

Investigation of biomethylation of arsenic and tellurium during composting

“…Similar to experiments with arsenic-amended alfalfa hay, TMAs was the dominant species with exception of the 21 days composting of P. vittata. Very recently, Cao et al [26] studied the arsenic transformation during composting of P. vittata collected from a As-contaminated site with a similar total arsenic content as in this study (4589 mg As kg DW −1 ). In contrast to the present study, composting was conducted for 120 days in a temperature controlled reactor at a temperature of 45-50 • C. MMAs and DMAs, but not TMAs were analyzed in compost leachate after 1, 4, 8, 16 weeks composting as well as water-soluble arsenic in the final compost product.…”

Effect of Biochar and Amendments on Pb and As Phytotoxicity and Phytoavailability in a Technosol

“…In addition, Moreno‐Jiménez et al observed that the mobilization of arsenic, Cu and Se after application of olive plant waste compost to flooded soils could be attributed to increased concentrations of DOC in interstitial water. On the other hand, Cao and Ma used compost to remediate soils contaminated with chromium‐copper arsenate and reported a positive effect on arsenic adsorption. Beesley et al found no statistically significant correlation between As and DOC concentrations in SPW of a compost‐amended soil, indicating that DOC did not drive mobilization of As in this soil.…”

Roles and significance of chelating agents for potentially toxic elements (PTEs) phytoremediation in soil: A review

“…Previously, post-phytoremediation biomass of Elsholtzia splendens (Xia et al, 2012), Oenothera biennis L. (Guo et al 2013), Zea mays L., Brassica napus L. (Cao et al, 2015) and Pteris vittata L. (Cao et al, 2010) were treated using anaerobic digestion. Moreover, Phanerochaete chrysosporium (white-rot fungus) (Zhao et al, 2015), Cadophora sp.…”