Production of Biodiesel Feedstock from the Trace Element Contaminated Lands in Ukraine

Sytar, Oksana; Prasad, M.N.V.

doi:10.1016/b978-0-12-802830-8.00001-0

Cited by 7 publications

(18 citation statements)

References 52 publications

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“…The chemical modifications of heavy metals in the soil lead to the formation of HMs complexes (Caporale & Violante, 2016), and the toxicity of which is detrimental to the habitat of living organisms (Mihaly‐Cozmuta et al, 2005). A better understanding on the soil‐food crop transfer mechanisms and the participation of HMs in it are prerequisite for developping methods for soil phytoremediation (Rai et al, 2019; Thakur et al, 2016; Sytar & Prasad, 2016).…”

Section: Introductionmentioning

confidence: 99%

Physiological and molecular mechanisms of metal accumulation in hyperaccumulator plants

Sytar

Ghosh

Malinská

et al. 2020

Physiologia Plantarum

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Most of the heavy metals (HMs), and metals/metalloids are released into the nature either by natural phenomenon or anthropogenic activities. Being sessile organisms, plants are constantly exposed to HMs in the environment. The metal non‐hyperaccumulating plants are susceptible to excess metal concentrations. They tend to sequester metals in their root vacuoles by forming complexes with metal ligands, as a detoxification strategy. In contrast, the metal‐hyperaccumulating plants have adaptive intrinsic regulatory mechanisms to hyperaccumulate or sequester excess amounts of HMs into their above‐ground tissues rather than accumulating them in roots. They have unique abilities to successfully carry out normal physiological functions without showing any visible stress symptoms unlike metal non‐hyperaccumulators. The unique abilities of accumulating excess metals in hyperaccumulators partly owes to constitutive overexpression of metal transporters and ability to quickly translocate HMs from root to shoot. Various metal ligands also play key roles in metal hyperaccumulating plants. These metal hyperaccumulating plants can be used in metal contaminated sites to clean‐up soils. Exploiting the knowledge of natural populations of metal hyperaccumulators complemented with cutting‐edge biotechnological tools can be useful in the future. The present review highlights the recent developments in physiological and molecular mechanisms of metal accumulation of hyperaccumulator plants in the lights of metal ligands and transporters. The contrasting mechanisms of metal accumulation between hyperaccumulators and non‐hyperaccumulators are thoroughly compared. Moreover, uses of different metal hyperaccumulators for phytoremediation purposes are also discussed in detail.

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Section: Introductionmentioning

confidence: 99%

Physiological and molecular mechanisms of metal accumulation in hyperaccumulator plants

Sytar

Ghosh

Malinská

et al. 2020

Physiologia Plantarum

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“…Regarding human health, environment, economy, and energy conservation issues, AD systems have attracted remarkable attention by the production of bio-methane gas (renewable energy source) through bio-chemical conversion of biodegradable wastes [68]. AD process has occurred in an insufficient O2 atmosphere which prepares suitable conditions for activation of the microorganism to degrade organic matter into biogas [69]. To convert the feedstock to bio-methane, a series of bi-metabolism steps including hydrolysis/acidogenesis, acetogenesis, and methanogenesis occurred in the AD systems reactors [70].…”

Section: Biochemical Conversion 31 Anaerobic Digestionmentioning

confidence: 99%

“…To convert the feedstock to bio-methane, a series of bi-metabolism steps including hydrolysis/acidogenesis, acetogenesis, and methanogenesis occurred in the AD systems reactors [70]. During the first stage, the high molecular weight complex insoluble organic matter is degraded into simple soluble molecules by the extracellular enzymes [69]. During the hydrolysis phase, the organic components of carbohydrate, protein, and lipid polymers are hydrolyzed into simple sugar, amino acid, and long-chain fatty acid respectively [71].…”

Section: Biochemical Conversion 31 Anaerobic Digestionmentioning

confidence: 99%

Biomass and Energy Production: Thermochemical Methods

Shafizadeh¹,

Danesh²

2022

Biomass, Biorefineries and Bioeconomy

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In this chapter, an overview of bioenergy importance toward energy systems with low (zero or negative) greenhouse gas emissions and general conversion technologies to produce different types of bioenergy products from various biomass feedstock is presented. The bioenergy products from biomass cover all physical phases including solid (biochar), liquid (bio-oil and bio-crude oil), and gases phase (bio syngas) which make them an interesting field in terms of both academic types of research and industrial scale. A discussion on the available technologies for thermochemical, biochemical, and extraction processes is presented, which is followed by some important parameters on each separate process that cause the optimum production rate and desired products. In addition, in the final part, an overview of the technology readiness level for the processes is reported.

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“…Another method of improving the cost-benefit of phytoremediation is to extract active principles from plants and used before plant processing. Obviously, if any useful substances (metals or oils) are recovered from the plants or by using the harvested plants for biofuel production, this practice can reduce the related costs of phytoremediation [101,102].…”

Section: Future Developmentsmentioning

confidence: 99%

Integrating Ecosystem Services in Historically Polluted Areas: Bioremediation Techniques for Soils Contaminated by Heavy Metals

Nedelescu¹,

Baconi²,

Stan³

et al. 2018

Ecosystem Services and Global Ecology

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Bioremediation of soils contaminated by heavy metals is based on the use of specially selected plants able to reduce the hazards of toxic metals. Depending on the mode of action on the heavy metals existing in the soil and the place where the action takes place, the following mechanisms for soil phytoremediation are distinguished: phytostabilization, phytoextraction, phytoimobilization, rhizofiltration, or evapotranspiration. These mechanisms are complex and include the plant ability to reduce the mobility and bioavailability of heavy metals and other pollutants, to extract large amounts of heavy metals from the soil or to evaporate water together with various pollutants already reached in the rhizosphere. Decontamination of polluted soils by using bioaccumulative plants is proposed as an environmental-friendly alternative to the traditional physicochemical methods, being a sustainable method with a great potential in the terms of environmental protection and cost management.

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Production of Biodiesel Feedstock from the Trace Element Contaminated Lands in Ukraine

Cited by 7 publications

References 52 publications

Physiological and molecular mechanisms of metal accumulation in hyperaccumulator plants

Physiological and molecular mechanisms of metal accumulation in hyperaccumulator plants

Biomass and Energy Production: Thermochemical Methods

Integrating Ecosystem Services in Historically Polluted Areas: Bioremediation Techniques for Soils Contaminated by Heavy Metals

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