Phytoremediation of Heavy Metals and Pesticides Present in Water Using Aquatic Macrophytes

Anand, Sangeeta; Bharti, Sushil Kumar; Kumar, Sanjeev; Barman, S. C.; Kumar, Narendra

doi:10.1007/978-981-32-9664-0_4

Cited by 19 publications

(6 citation statements)

References 156 publications

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“…Water hyacinth is an aquatic plant that can withstand highly polluted environments (Rezania et al, 2015). Various studies have shown that this plant could be used to remove pollutants (e.g., phosphorus pesticide and heavy metals) and excessive nutrients (e.g., nitrogen and phosphorus) from industrial and agricultural wastewater (Anand et al, 2019). Interestingly, this pollutant-tolerant plant species contains high levels of melatonin (Tan et al, 2007).…”

Section: Melatonin Levels and Biosynthesis In Plants Under Stress Conmentioning

confidence: 99%

Melatonin: A master regulator of plant development and stress responses

Sun

Liu

Wang

et al. 2020

JIPB

282

203

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Melatonin is a pleiotropic molecule with multiple functions in plants. Since the discovery of melatonin in plants, numerous studies have provided insight into the biosynthesis, catabolism, and physiological and biochemical functions of this important molecule. Here, we describe the biosynthesis of melatonin from tryptophan, as well as its various degradation pathways in plants. The identification of a putative melatonin receptor in plants has led to the hypothesis that melatonin is a hormone involved in regulating plant growth, aerial organ development, root morphology, and the floral transition. The universal antioxidant activity of melatonin and its role in preserving chlorophyll might explain its anti‐senescence capacity in aging leaves. An impressive amount of research has focused on the role of melatonin in modulating postharvest fruit ripening by regulating the expression of ethylene‐related genes. Recent evidence also indicated that melatonin functions in the plant's response to biotic stress, cooperating with other phytohormones and well‐known molecules such as reactive oxygen species and nitric oxide. Finally, great progress has been made towards understanding how melatonin alleviates the effects of various abiotic stresses, including salt, drought, extreme temperature, and heavy metal stress. Given its diverse roles, we propose that melatonin is a master regulator in plants.

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Section: Melatonin Levels and Biosynthesis In Plants Under Stress Conmentioning

confidence: 99%

Melatonin: A master regulator of plant development and stress responses

Sun

Liu

Wang

et al. 2020

JIPB

282

203

View full text Add to dashboard Cite

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“…Some plants are green livers as they have the ability to degrade many xenobactics and behave as a sink for noxious contaminants. Some plants use solar driven technology to remove contaminants such as heavy metals like Zn, Hg, Pb, Cr,Cu radioactive metals, inorganic compounds like pesticides, tetrachloroethylene tetranitrotoluene (S. Anand, Bharti, Kumar, Barman, & Kumar, 2019). Plants used in the phytoremediation must have certain qualities like rapid fgrwoth, hairy, deep root system, high biomass and high bioaccumulation coefficient.…”

Section: Phytoremediationmentioning

confidence: 99%

Phytoremediation of Heavy Metals from Irrigation Water, Faisalabad, Pakistan

Naeem¹,

Khadeeja²,

Salam³

et al. 2023

Glob Acad J Pharm Drug Res

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A technique called phytoremediation makes use of a plant’s root system to draw contaminants, primarily heavy metals (zn, cr, and ni), from the surrounding rhizosphere. These are the end result of human actions such the use of pesticides, waste byproducts, cosmetics, and pharmaceuticals. This analysis focuses on soil contamination removal since prolonged exposure to heavy metals can cause respiratory illnesses, cardiovascular disorders, cancer of the liver, lungs, and kidneys, among other problems. In order to immobilise metals and change their harmful states into less toxic states, plants use a process called phytoremediation and tactics like phyto(rhizo) stabilisation. Chromium 6 is changed into chromium 3 through phytostabalization, a process in which plants are utilised to change a pollutant’s more hazardous form into a less hazardous volatile form that may be transported. Macrophytes, such as Arbidopsis thaliana and Cgara canescens, have been found to use phytofiltration and phytovolatization to remove radioactive and heavy metals. Indian mustard (Brassica juncea) and sun flower (Helianthus annus) are suitable plants for rhizofilteration, which is essential to prevent environmental and health problems. A heavy metal that is widely present in soil is cadmium. Cd can be removed physically in a number of ways, with membrane filtration and adsorption being the most often utilised techniques for doing so. Chemical (in which the addition of barium acetate caused coagulation) and biological (which uses microorganisms such bacteria, yeast species, fungal aspergillus, and green algea chlorel for the Bioremediation of Cd.) approaches are also employed for the removal of cadmium. In essence, phytoremediation uses the already-existing power of plant systems. This approach is more economical and environmentally benign than conventional approaches for cleaning up contaminated soil and ground water. Since drinking water contaminated with heavy metals is thought to be the primary cause of death in Pakistan, getting rid of these pollutants is our top priority.

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“…These aquatic communities deploy several different mechanisms to extinguish pollutants. Aquatic macrophytes use rhizofiltration, phytoextraction, phytostabilization, phytovolatilization and phytotransformation as mechanisms [19,23], whereas periphyton works in the transformation and degradation of nutrients that attenuate water quality through a complex assembly of organisms [24,25].…”

Section: Introductionmentioning

confidence: 99%

Ecotechnologies for Aquaculture Wastewater Treatment in a Water-Scarce Region

Gomes,

Silva,

Tonizza-Pereira

2024

Braz. arch. biol. technol.

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In aquaculture, biological treatments usually have an excellent benefit-cost ratio. This study evaluated the efficiency of different ecotechnologies on aquaculture wastewater treatment. Two experimental units were installed. In the first one, tanks were individually vegetated with free-floating aquatic macrophytes. In the second experimental unit, 10.72 m² of artificial substrate were added for periphyton colonization. The hydraulic retention time of the wastewater was of 30 days. Both physical and chemical characterizations of the effluent were carried out at the beginning and at the end of the experiment. The periphyton community attached to the substrate was catalogued. In the first unit, the pH, nitrite, and orthophosphate values were significantly different. The tanks vegetated with Azolla filiculoides were the only ones where the electrical conductivity values were reduced. Tanks vegetated with Azolla filiculoides and Pontederia crassipes presented decreased the nitrate concentration. On the other hand, the concentration of ammonia and total phosphorus decreased in all vegetated tanks. In the second unit, only the nitrate and ammonia values did not decrease in the last day of the experiment. 33 taxa belonging to the classes Cyanophyceae, Chlorophyceae, Bacillariophyceae, Trebouxiophyceae, Coleochaetophyceae, Coscinodiscophyceae and Zygnematophyceae were identified in the substrate. The experimental units were effective in mitigating the nutrients in aquaculture wastewater that cause eutrophication. HIGHLIGHTS• We assessed ecotechnologies with aquatic macrophytes and with periphyton.• Azolla filiculoides, Pontederia crassipes and Salvinia auriculata were used.• Nutrient removal was greater using aquatic macrophytes than using periphyton.• Periphyton was not efficient in reducing the ammonia and nitrate contents.

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Phytoremediation of Heavy Metals and Pesticides Present in Water Using Aquatic Macrophytes

Cited by 19 publications

References 156 publications

Melatonin: A master regulator of plant development and stress responses

Melatonin: A master regulator of plant development and stress responses

Phytoremediation of Heavy Metals from Irrigation Water, Faisalabad, Pakistan

Ecotechnologies for Aquaculture Wastewater Treatment in a Water-Scarce Region

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