To minimise such risk, phytoremediation comes into play. The impact of uranium on living organisms masterclassacid mine drainage, global prospectus, 2021 october, 2010, indaba hotel, midrand. Rhizofiltration rhizofiltration can be defined as the use of plant roots to absorb, concentrate, andor precipitate hazardous compounds, particularly heavy metals or radionuclides, from aqueous solutions. Materials used for bed media peat, composted yard waste, bark, coarse soil, gravel or plastic shapes reference 2 from epa pdf. Rhizofiltration the roots of plants are used to adsorb the metals from a contaminated soil or solution and the metals removed by harvesting the whole plant. Rhizofiltration can be used for pb, cd, cu, ni, zn, and cr, which are primarily retained within the roots usepa, 2000. It can be used to detoxify sites containing metals, pesticides, solvents, explosives, crude oil, hydrocarbons, and landfill leachates. There are several different types of phytoremediation mechanisms. Bioremediation, contaminants, monitoring and saturation received 16 march 2011. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Rhizofiltration refers to the use of plant roots to absorb, concentrate, and precipitate toxic metals from contaminated groundwater. Rhizofiltration rhizofiltration is the adsorption or precipitation onto plant roots or absorption into the roots of contaminants that are in solution surrounding the root zone. Rhizofiltration is similar to phytoextraction, but the plants are used primarily to address contaminated ground water rather than soil.
The plants to be used for cleanup are raised in greenhouses with their roots in water rather than. The uptake, accumulation and degradation of contaminants vary from plant to plant. Study on application of phytoremediation technology in. Regarding the rhizosphere, there are other techniques besides the rhizofiltration. Phytoremediation is the use of plants and trees to clean up contaminated soil and water. Jan 23, 2015 phytoremediation of heavy metals by calcifying macroalgae anthropogenic activities release heavy metals into water bodies which can lead to imbalancement of the ecosystem. To acclimate the plants once a large root system has. People can view the slides even if they dont have powerpoint, but they cant make changes to it. Phytoremediation phyto means plant is a generic term for the group of technologies that use plants for remediating soils, sludges, sediments and water contaminated with organic and inorganic contaminants.
Heavy metal contamination of water bodies and groundwater is a major concern of the modern world. In situ bioremediation involves treating the contaminated material at the site while ex situ involves the removal of the contaminated material to be treated elsewhere. Hindu college, nagercoil, tamil nadu, india key words. Several methods already used to clean up the environment from these kinds of contaminants, but most of them are costly and difficult to get optimum results. Present phytoremediation system characteristics that site managers and others might find useful in assessing the potential applicability of phytoremediation to a specific site. Rhizofiltration is one of the phytoremediation strategies, which uses plant roots to absorb, concentrate and precipitate heavy metals from water ensley, 2000. A comment during a phytoremediation presentation at the fourth. Bioremediation 2 free download as powerpoint presentation. Wild mustard plant for metals phytoextraction source.
It is relatively inexpensive, yet potentially more effective than comparable technologies. Currently, phytoremediation is an effective and affordable technological solution used to extract or remove inactive metals and metal pollutants from. Physiological responses of water hyacinth, eichhornia. Plants rapidly remove heavy metals from water and concentrate them in the roots and shoots. Rhizofiltration allows insitu treatment, minimizing disturbance to the environment. Plants,used as remediation techniques, take up the heavy metals to produce an internal concentration greater than that of the external environment. Explore biofiltration with free download of seminar report and ppt in pdf and doc format. Rhizofiltration can be conducted in situ to remediate contaminated surface water bodies or ex situ, in which an engineered system of tanks can be used to hold the introduced contaminated water and the plants. Plants that can accumulate and tolerate high levels of heavy metals are good candidates for phytoremediation sekhar et al. Biofiltration seminar report, ppt, pdf for mechanical.
In the publish as pdf or xps dialog box, choose a location to save the file to. However, commercialization of this in situ remediation technology requires a better understanding of plantmetal interactions especially on. Phytoremediation des sols pollues par les metaux enssib. Phytoremediation is an emerging technology helping to clean the soil and water bodies from noxious pollutants.
Phytoremediation, the use of green plants to treat and control wastes in water, soil, and air, is an important part of the new field of ecological engineering. Phytoremediation of heavy metals by calcifying macroalgae anthropogenic activities release heavy metals into water bodies which can lead to imbalancement of the ecosystem. However, commercialization of this in situ remediation technology requires a better understanding of. Rhizofiltration to remove cd from water having 5, 10 and 20 mg cd l1 using canola plant brassica napus l. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Some examples of bioremediation technologies are bioventing, landfarming, bioreactor, composting. Pdf rhizofiltration using sunflower helianthus annuus l. Appropriate modifications were made to suit the circumstances in malaysia. Stabilization of heavy metals in the soilroot surface. This presentation is on the methods of phytoremediation performed. Either of these systems will require an understanding of the contaminant speciation and interactions of all contaminants and nutrients.
The use of plants to remove heavy metals from aqueous streams article pdf available in environmental science and technology 295. Plants,used as remediation techniques, take up the heavy metals to produce an internal concentration greater than. New remediation technologies phytoremediation electrokinetic remediation bedrock fracturing circulating wellsinwell treatment insitu oxidation dualphase vapor extraction. Rhizofiltration is a contamination treatment method that may be conducted in situ, with plants being grown directly in the contaminated water body or ex situ, where plants are grown offsite and later introducted to the contaminated water body. How to evaluate alternative cleanup technologies for. Initially, suitable plants with stable root systems are supplied with contaminated water to acclimate the plants. A type of metabolism where energy is obtained from the oxidation of inorganic compounds. It corresponds to the accumulation of compounds from soil aqueous solutions by the adsorption on the surface of roots or assimilation through the roots and transmission to the aerial parts. An evaluation of the operation and monitoring plans, which will allow you to determine whether startup and longterm. Here firstly the plants are grown in clean water to accumulate a large root system. For this reason, the plants used in this method should be highly tolerant to toxic compounds.
It differs from phytoextraction in that the mechanism is root accumulation and harvest using hydroponic soilless growing techniques. Sites that have shallow, low levels of contaminants are the best candidates for phytoremediation. Ppt phytoremediation powerpoint presentation free to. The biological oxidation of ammonia or ammonium with oxygen into nitrite followed by the oxidation of these nitrites into nitrates. Applicability a suitable plant for rhizofiltration applications can remove toxic metals from solution over an extended period of time with its rapidgrowth root system. Rhizofiltration is similar to phytoextraction in that it is also a concentration technology.
Detailed study on biofilters in controlling air pollution. It is not a design manual, and is not intended to provide enough information to choose. In situ and ex situ applications are governed by site soil and water characteristics, nutrient sustainability, meteorology, hydrology, feasible ecosystems, and contaminant. Nitrification is the process by which ammonia nh 3 or ammonium. Oct 17, 2017 application and techniques for phytoremediation introduction. Click create pdf xps document, then click create pdf xps.
Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Rhizofiltration it is process where mass of plant roots filter ground water thereby removing pollutants and toxic substances, which remain adsorbed to or absorbed by the roots. Generally, dialysis dose can be defined as the net product of solute clearance k and treatment time tin hdf, solute clearance k is determined by total convective volume cv, liters achieved during treatmentcv is governed by ultrafiltration rate ufr, mlmin and treatment time t. Rhizofiltration is a form of phytoremediation that involves filtering contaminated groundwater. Download as ppt, pdf, txt or read online from scribd. Phytostabilization, where plants are used to stabilize rather than clean contaminated soil. Phytovolatalization, which involves the use of plants to extract certain metals from soil and then release them into the. Phytoremediation is one of the most potent and viable solution for poor farmers through communitybased management. Phytoremediation can provide a lowcost and sustainable way to improve the economies of developing countries. Phytoextraction plants can be grown on contaminated soil. Phytoremediation processes of contaminated soils phytoremediation processes rely on the ability of plants to take up andor metabolize pollutants to less toxic substances. Feb 19, 2017 rhizofiltration rhizofiltration can be defined as the use of plant roots to absorb, concentrate, andor precipitate hazardous compounds, particularly heavy metals or radionuclides, from aqueous solutions. These plants are then transferred to the contaminated site to collect the contaminants, and once. Rhizofiltrationthe use of plant root system to removeextract pollutants from wastewaterhas proven advantages over conventional methods of treatment.
Phytoremediation is a bioremediation process that uses various types of plants to remove, transfer, stabilize, andor destroy contaminants in the soil and groundwater. In this process, the plant releases natural substances through its roots, supplying. Physiological responses of water hyacinth, eichhornia crassipes mart. Bioremediation is an option that offers the possibility to destroy or render harmless various contaminants using natural biological activity. Phytoremediation of contaminated soils is generally believed to occur through one or more of the following mechanisms or processes. Heavy metals are among the most important sorts of contaminant in the environment. This allows for a relatively inexpensive procedure with low capital and operational costs, depending. The basis of this rig setup was developed based on the rig configuration developed by the department of environmental geosciences, pukyong national university, busan, south korea minhee and minjune, 2009. Lesson prepared under mhrd project national mission.
Rhizofiltration of lead using an aromatic medicinal plant. The wastewater is sprinkled on the surface of roots or the plants are submerged in the treated water. There are five basic types of phytoremediation techniques. Save powerpoint presentations as pdf files office support. Rhizofiltration is costeffective for large volumes of water having low concentrations of contaminants and subjected to low stringent standards 5. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. The focus of the laboratorys research program is on methods for the prevention and control of pollution to air, land, water and subsurface resources. Rhizofiltration, phytostabilisation and phytoextraction. Rhizofiltration is a water remediation technique that involves the uptake of contaminants by plant roots used to reduce contamination in natural wetlands and estuary areas the wide part of a river where it nears the sea.
It is used for remediation of ground water rather than soil reclamation. Phytovolatalization, which involves the use of plants to extract certain metals from soil and then release them into the atmosphere through volatilization. In this case tolerance and translocation are largely irrelevant latha et al. Phytoremediation techniques in wastewater treatment. Bioremediation is an option that offers the possibility to destroy or render harmless. Rhizofiltration filtering water through a mass of roots to remove toxic substances or excess nutrients. Bio filtration is air pollution control technique which involves bio degradation of contaminants under the action of microorganisms diffused in a thin layer of moisture known as biofilm. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Also explore the seminar topics paper on biofiltration with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020. Oyster shells for neutralizing acid buildup and fertilizer for macronutrients are mixed with bed media support rack perforated allow air from the plenum to move into the bed media to contact microbes that live in the bed. Rhizofiltration is an important process going on in soil under various soil and environmental conditions. When you save presentation as a pdf file it freezes the formatting and layout.
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