Impact of heavy metal laden algal biomass on hydrothermal liquefaction and biorefinery approach

Naaz, Farah; Bhattacharya, Arghya; Pant, Kamal Kishore

doi:10.1016/j.psep.2020.08.005

Cited by 17 publications

(3 citation statements)

References 39 publications

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“…Simultaneously, the metal mass fraction must ideally be concentrated in a controlled and predictable way in one of these products. The metal partition in the different streams will determine the destiny of the product, and low concentrations may render it useful for further processing (compost material, catalyst material, or energy recovery), while high concentrations will limit downstream processing or must include another mass transfer operation to separate the metal fraction [36][37][38].…”

Section: Thermochemical Treatmentsmentioning

confidence: 99%

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

et al. 2021

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Phytoremediation is an attractive strategy for cleaning soils polluted with a wide spectrum of organic and inorganic toxic compounds. Among these pollutants, heavy metals have attracted global attention due to their negative effects on human health and terrestrial ecosystems. As a result of this, numerous studies have been carried out to elucidate the mechanisms involved in removal processes. These studies have employed many plant species that might be used for phytoremediation and the obtention of end bioproducts such as biofuels and biogas useful in combustion and heating. Phytotechnologies represent an attractive segment that is increasingly gaining attention worldwide due to their versatility, economic profitability, and environmental co-benefits such as erosion control and soil quality and functionality improvement. In this review, the process of valorizing biomass from phytoremediation is described; in addition, relevant experiments where polluted biomass is used as feedstock or bioenergy is produced via thermo- and biochemical conversion are analyzed. Besides, pretreatments of biomass to increase yields and treatments to control the transfer of metals to the environment are also mentioned. Finally, aspects related to the feasibility, benefits, risks, and gaps of converting toxic-metal-polluted biomass are discussed.

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Section: Thermochemical Treatmentsmentioning

confidence: 99%

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

et al. 2021

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“…Algal biomass including a consortium of Chlorella and Phormidium was capable of removing 50-90% of heavy metals in 9 days (Naaz et al, 2021). Regardless of the availability of different algae for heavy metal removal, standardization of single algae-based strategies cannot be made as different algae have different specificity for heavy metals as noted in Table 4.…”

Section: Algaementioning

confidence: 99%

“…Though the major bottleneck to algal heavy metal remediation mainly depends on its extraction methods which could involve physiochemical treatments such as heating, acidbase treatments, etc, and the beneficial, cost-effective, and selective heavy metals biosorption properties of algae outweighs the associated difficulties. The treatment of heavy metal contaminated algal biomass yet another concern can be resolved by the process of thermal liquefaction in a high-temperature pressure reactor to recover the heavy metals from algae post-remediation treatment which yielded approximately 70% of heavy metal in the solid phase of the extract (Naaz et al, 2021).…”

Section: Algaementioning

confidence: 99%