Cyanide phytoremediation by water hyacinths (Eichhornia crassipes)

Ebel, Mathias; Evangelou, Michael W.H.; Schäffer, Andreas

doi:10.1016/j.chemosphere.2006.06.041

Cited by 101 publications

(53 citation statements)

References 30 publications

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“…A small variation in metabolic rates between the different cultivars was found, in which values of v max and K M were found to be 10.80-22.80 mg CN/kg h and 2.57-7.09 mg CN/L using nonlinear regression treatments, respectively. Ebel et al (2007) also found that cyanide at 5.8 and 10 mg/L was completely eliminated by water hyacinth (Eichhornia crassipes) after 23-32 h. Metabolism of K 14 CN was measured in batch systems with leaf and root cuttings. Leaf cuttings removed about 40 % of the radioactivity from solution after 28 h and 10 % was converted to 14 CO 2 ; root cuttings converted 25 % into 14 CO 2 after 48 h but only absorbed 12 % in their tissues.…”

Section: Uptake and Transport Of Cyanide By Plantsmentioning

confidence: 99%

“…The extensive use of cyanide-containing chemicals results in a significant release of cyanide into the environment on a continuous basis (Zheng et al 2004;Donato et al 2007). For example, the open tailing ponds stored effluents generated from extraction process of gold mining operation contain up to 120 mg/L free cyanide to 400 mg/L total cyanide, including various iron cyanides with heavy metals (Ebel et al 2007). It also has been reported that there are about 3,000 and 1,000 manufactured gas plant facilities in the USA and in Germany (Rennert and Mansfeldt 2002).…”

Section: Introductionmentioning

confidence: 99%

“…As a natural, pumpand-treat system, phytoremediation is one of the very few technologies that can address a diverse range of media and contaminants simultaneously (Kord et al 2010;Ashraf et al 2011;Hegazy et al 2011;Dede et al 2012;Parween et al 2012;Karimi et al 2013). Indeed, a number of plants from three continents and climate zones have been identified to transport and assimilate free cyanide and iron cyanides, and capability highly relies on their genetic traits of plants (Ebbs et al 2003;Yu et al 2004;Larsen et al 2005;Ebel et al 2007). This review discusses uptake, assimilation and toxicity of the most important cyanogenic compounds in plants.…”

Section: Introductionmentioning

confidence: 99%

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Uptake, assimilation and toxicity of cyanogenic compounds in plants: facts and fiction

2014

Int. J. Environ. Sci. Technol.

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Cyanide is a simple nitrogenous compound that arises from both anthropogenic and natural sources. Plants vary considerably in their physiological and biochemical responses to different species of exogenous cyanides from reduced growth to inhibition on enzymatic activities. Also, great differences in uptake, assimilation and toxicity between free cyanide and iron cyanide have been observed. Unlike botanical uptake of free cyanide chiefly achieved by simple diffusion, iron cyanides have long been considered membrane impermeable and a protein-mediated uptake mode has been proposed. Biological fate of cyanides in plant materials is highly dependent on speciation of cyanides present. Natural development of degradation of free cyanide in plants is very obvious, where the b-cyanoalanine pathway has been widely distributed in higher plants and the production of asparagine and aspartate associated with cyanide assimilation is suggestive. Because phytodissociation of iron cyanides into free cyanide in plant materials is not a mandatory process involved in phytoassimilation, plants probably metabolized them through an undiscovered degradation pathway rather than the b-cyanoalanine pathway. Available information shows phytoassimilation of endogenous cyanide into nitrogen metabolism; however, additional efforts to fully elucidate presence of essential enzymes involved and their proteomic or DNA expression quantitatively are needed to prove and clarify phyto-benefits of assimilation of exogenous cyanide in plant nutrition.

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Section: Uptake and Transport Of Cyanide By Plantsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Uptake, assimilation and toxicity of cyanogenic compounds in plants: facts and fiction

2014

Int. J. Environ. Sci. Technol.

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“…Recent findings have suggested that adsorption of hydrocarbons by E. crassipes is dominated by Van Der Waals forces (Lin & Zheng, 2003). Hence, the plant has capability to adsorb other compounds such as inorganic nutrients and pesticides (Reddy, Agami, & Tucker, 1989;Xia & Ma, 2006;Rosas, Carbajal, & Gómez, 1984;Ebel, Evangelou, & Schaeffer, 2007;Ghabbour, Davies, Lam, & Vozzella, 2004).…”

Section: Phytodegradationmentioning

confidence: 99%

Polycyclic Aromatic Hydrocarbons Degradation Techniques: A Review

Ukiwe¹,

Egereonu²,

Njoku³

et al. 2013

IJC

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The demand for processed petroleum products and agricultural produce has exposed our environment to polycyclic aromatic hydrocarbons (PAHs) contamination. PAHs stick to solid sediments and are ubiquitous including soil, water and air. Their presence in these media creates problems because consuming products obtained from these sources could be deleterious to human health since several of these compounds (benz(a)anthracene, benzo(a)pyrene, chrysene etc) have been implicated in causing tumors in animals and cancer in humans. The present review describes several remediation techniques which are efficient and cost effective in removing PAHs from the environment. Some of these conventional clean-up methods are not only environmental friendly; they also present a novel approach in reducing the ability of PAHs to cause prospective risk to humans and the ecosystem.

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“…On the one hand, uncontrolled dense water hyacinth mats over water surface were considered as a nuisance for obstructing navigation, irrigation, and fishing and causing blockage of drainage systems as well as hampering recreational activities (Khaket et al 2012), causing significant ecological and socioeconomic impacts in areas of introduction (Fan et al 2013). However, on the other hand, as it generally grows well even in heavily polluted waters (Hu et al 2007), together with its wide tolerance to environmental conditions (De Casabianca and Laugier 1995;Rommens et al 2003), as a scavenger of nutrients (Fang et al 2007), heavy metals (Hadad et al 2011), and toxic organics (Ebel et al 2007), it has been wildly used and has gained increasing attention in recent years for phytoremediation of many waters. If exploited properly, green and environment-friendly technologies based on water hyacinth could address many prevailing issues; however, as notorious weed causes it to fail to lure entrepreneurs, it hinders capital investment and application (Patel 2012).…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Fenced cultivation of water hyacinth for cyanobacterial bloom control

Qin

Zhang

Liu

et al. 2016

Environ Sci Pollut Res

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To achieve the goals of harmful cyanobacterial bloom control and nutrient removal, an eco-engineering project with water hyacinth planted in large-scale enclosures was conducted based on meteorological and hydrographical conditions in Lake Dianchi. Water quality, cyanobacteria distribution, and nutrient (TN, TP) bioaccumulation were investigated. Elevated concentrations of N and P and low Secchi depth (SD) were relevant to large amount of cyanobacteria trapped in regions with water hyacinth, where biomass of the dominant cyanobacteria Microcystis (4.95 × 10 10 cells L −1) was more than 30-fold compared with values of the control. A dramatic increase of TN and TP contents in the plants was found throughout the sampling period. Results from the present study confirmed the great potential to use water hyacinth for cyanobacterial bloom control and nutrient removal in algal lakes such as Lake Dianchi.

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Cyanide phytoremediation by water hyacinths (Eichhornia crassipes)

Cited by 101 publications

References 30 publications

Uptake, assimilation and toxicity of cyanogenic compounds in plants: facts and fiction

Uptake, assimilation and toxicity of cyanogenic compounds in plants: facts and fiction

Polycyclic Aromatic Hydrocarbons Degradation Techniques: A Review

Fenced cultivation of water hyacinth for cyanobacterial bloom control

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