Using in vivo nickel to direct the pyrolysis of hyperaccumulator plant biomass

Abstract

The effects of naturally occurring nickel in hyperaccumulator plants used for phytoremediation of contaminated soils on the microwave (MW) biomass pyrolysis are described for the first time.

Upcycling of Cd Hyperaccumulator Biomass into a CdS@C Nanocomposite with High Photocatalytic Performance

“…6,7,16,17 In addition, the hyperaccumulator biomass could be used to extract bio-oil, which can then be converted into biochar, fertilizer, energy, and other value-added products after detoxification through hydrothermal processes, gasification, anaerobic digestion, as well as composting. 7,[13][14][15]18 Interestingly, some biochar materials derived from metal-loaded biomass were found to have great potential for environmental applications. 19 For example, it has been reported that Cu-contaminated cotton leaves could be converted into a Cu nanoparticle-embedded biochar composite by pyrolysis with potential application in cyanobacteria inhibition.…”

“…There is a consensus that the ideal disposal strategy for metal-enriched hazardous waste is the recovery in the form of high value-added products. − More recently, several studies have been carried out to address the problem of metal-enriched biomass recycling following phytoextraction. − Principally, the valuable heavy metals accumulated in the hyperaccumulators, such as Ni, Au, and Pt, have been recovered by incineration/pyrolysis or leaching, which is referred to as phytomining. ,,, In addition, the hyperaccumulator biomass could be used to extract bio-oil, which can then be converted into biochar, fertilizer, energy, and other value-added products after detoxification through hydrothermal processes, gasification, anaerobic digestion, as well as composting. ,− , Interestingly, some biochar materials derived from metal-loaded biomass were found to have great potential for environmental applications . For example, it has been reported that Cu-contaminated cotton leaves could be converted into a Cu nanoparticle-embedded biochar composite by pyrolysis with potential application in cyanobacteria inhibition .…”

Coupling Plant Biomass Derived from Phytoremediation of Potential Toxic-Metal-Polluted Soils to Bioenergy Production and High-Value by-Products—A Review

“…The presence of metals in biomass can also change the yield of the by-products. Doroshenko et al [64] showed that it is the presence of a metal and the in vivo interactions that alter the carbon partition. As reviewed by Fagnano et al [65], the metal concentration in shoot biomass can be controlled in desired ranges by agronomical practices or genetic screening of metal accumulator plants.…”

Preparation of CdS@C Photocatalyst Using Phytoaccumulation Cd Recycled From Contaminated Wastewater

“…In past decades, the majority of present works have focused on enhancing the removal capacity of heavy metals from environments using hyperaccumulator plants. However, fewer studies have attempted to find an appropriate method for recovery and recycling of heavy metal resources after phytoextraction, except for noble metals, such as Ni, Au, Cu, and Pt ( Guilpain et al, 2018 ; Doroshenko et al, 2019 ; De Bernardi et al, 2020 ). As non-noble metals, Cd is deemed to be not valuable and economically viable for recycling, and most of the Cd-accumulated plants were disposed of in a landfill as hazardous waste ( Cui et al, 2018 ).…”