Fixed amounts of singlemetal contaminated soil were treated with succinic acid under varying conditions of ph and organic ligand concentration. Request pdf on jan 1, 20, jayanthi abraham and others published remediation of heavy metal contaminated soil find, read and cite all the research you need on researchgate. Remediation of metalscontaminated soils and groundwater. Bioremediation of heavy metal contaminated soil research.
Biological remediation of hydrocarbon and heavy metals. Available approaches of remediation and stabilisation of. Study on plantmicrobial remediation of antibiotic and. Although all contaminated sites are unique and a sitespecific approach to remediation is often required, heavy metal contamination creates even more complex challenges. View bioremediation of heavy metal contaminated soil research papers on academia. Cn103143559a method for remediation of heavy metal.
Information about the physical characteristics of the site and the type and level of contamination at the site must be obtained to enable accurate. For heavy metalcontaminated soils, the physical and chemical form of the heavy metal contaminant in soil strongly influences the selection of the appropriate remediation treatment approach. Chemical treatment to remove heavy metals includes. New methods of cleaning up heavy metal in soils and water. With greater public awareness of the implications of contaminated soils on human and animal health there has been increasing interest among the scientific community in the development of technologies to remediate contaminated sites. Electrokinetic remediation is an insitu process in which an electrical field is created in a soil matrix by applying a lowvoltage direct current dc to electrodes placed in the soil. Remediation of heavy metal contaminated groundwater. Apr 09, 2019 composts addition to heavy metal contaminated soil significantly reduced bioavailable fraction of all metal constituents table 4. This paper will pay attention tosome new developed methods based on removal ofthe metals from the soil simultaneousextraction. Soil contamination by heavy metals constitutes an important environmental problem, whereas field applicability of existing remediation technologies has encountered numerous obstacles, such as long. This paper talks about the mechanization of plantmicrobial remediation, finds the advantages and disadvantages about plantmicrobial technology, summarizes the method of selection of the plant and microbial, influential factors, and. The process of bioremediation can be applied to soil and water media.
Metalbearing solids at contaminated sites can originate from a wide variety of. Soils contaminated with heavy metals have been reused for agricultural, building, and industrial uses following remediation. Current remedial technologies for soils contaminated with heavy metals involve ex situ physical and chemical methods such as, solidification, electrokinetics, soil. Insitu electrokinetic remediation of metal contaminated. Phytomanagement of a chromiumcontaminated soil by a high. Soil washing technology for the removal of heavy metals from a contaminated soil. New developments in treatment of heavy metal contaminated soils. Assessment of heavy metal contamination in soil due to. Remediation techniques for heavy metalcontaminated soils. Excavation and transport of soil contaminated with heavy metals has generally been the standard remediation technique for treatment of heavy metal contaminated soils. Soil remediation practices for hydrocarbon and heavy metal. Pdf remediation of soils contaminated with heavy metals with an. Remediation of heavy metal contaminated soil by asymmetrical alternating current electrochemistry article pdf available in nature communications 101 december 2019 with 205 reads. The soil was collected from a field site near a nonferrous smelter and was subjected to laboratory and fieldscale studies.
The research tasks included developing synthetic contaminated soils representative of those found at superfund sites and making heavy metal adsorption and desorption studies. Soil contamination by heavy metals constitutes an important environmental problem, whereas field applicability of existing remediation technologies. In this study, we used different extracts inorganic and organic, i. Metals are naturally found in trace amounts in the soil around the world. Jan 05, 2016 although all contaminated sites are unique and a sitespecific approach to remediation is often required, heavy metal contamination creates even more complex challenges. Once these soil particles have settled, the heavy metals may spread into the surroundings, polluting new areas. This study investigated the potential application of soil washing technology for a heavy metal contaminated soil. Several methods do exist to treat soil andgroundwater. Heavymetal pollution of soil is mainly accredited to human activities, including, smelting, mining and various industrial activities wang et al. It is an ex situ remediation technique in which violent mixing and scrubbing of soil particles with a washing liquid cause desorption of heavy metal pollutants from the contaminated soils. Paper open access research on leaching rehabilltation of. Due to migration of leachate, soils have been contaminated with heavy metals such as lead, copper, zinc, iron, manganese, chromium, and cadmium and these heavy metals in solid wastes lead to serious problems because they cannot be biodegraded hong et al. Contamination of soil and groundwater by heavymetals is a widespread problem due to theformer activities of metal processing, sufracetreatment and mining industry and theuncontrolled dumping of waste in landfills.
Electrokinetic extraction, chemical stabilization, and phytoremediation are immature. Many metalcontaminated sites occur worldwide that pose very serious health risks roane, et al. This type of contamination typically arises from the rupture of underground storage tanks, application of pesticides, percolation of. Heavy metalcontaminated soils are poor in nutrients and contribute to suboptimal plant biomass accumulation as well as impeded rates of remediation nanda and abraham 20. Removal of heavy metal from contaminated soil with chelating. Various remediation methods have been developed for heavy metal contaminated soils. Phytomanagement of a chromiumcontaminated soil by a. Test vermi remediation as a lowcost, onsite method of remediating heavy metal soil contamination. Remediation techniques for heavy metalcontaminated soils are based on the extraction or an insitu stabilization of contam inants. Insitu, contaminant removalextraction remediation techniques are more favorable. Existing worm population was estimated via sampling, then the soil supplemented with beneficial bacteria, compost and a proprietary earthworm growth accelerator. Graduate thesis or dissertation remediation of heavymetal. Dan berggren kleja, department of soil and environment, slu assistant supervisors. Soils naturally reduce solubility and mobility of heavy metals through sorption, precipitation, and complexation reactions 25, 43.
Many industries are generating wastes which contain heavy metals. Remediation of metals contaminated soils and groundwater 3 2. Remediation technologies of heavy metal contaminated soils. Soil contamination means that the soil and the groundwater contain harmful chemical substances which can cause adverse effects on peoples health, the living environment, and the ecosystem 2 3. Heavy metal contaminated soils are poor in nutrients and contribute to suboptimal plant biomass accumulation as well as impeded rates of remediation nanda and abraham 20. Phytoextraction the use of plants for hm removal from the contaminated matrix soil and water through their uptake into the harvestable parts of. In the recent years, antibiotics and heavy metals have become common pollutants in soil. Treatment of contaminated soil with rp reduced plant available pb, cd and zn better cropsvol. Biological remediation of hydrocarbon and metal contaminated soil offers a better and more environmentally friendly technique that if properly and thoroughly explored can bring our environment into a better place for both plant and animals well being due to. Contemporary legislation respecting environmental protection and public health, at both nationalandinternationallevels,arebasedondatathatcharacterize chemical properties of environmental phenomena. In general cases, heavy metals in soil are in the form of cations. Remediation technologies for soils contaminated with heavy. Remediation of heavy metal contaminated soils is necessary to reduce the associated risks, make the land resource available for agricultural. Phytomanagement of a chromium contaminated soil by a highvalue plant.
Bioremediation options for heavy metal pollution ncbi. A comparison of technologies for remediation of heavy metal contaminated soils sanakhalid a,muhammadshahid a. Soil contamination by heavy metals is a worldwide problem for human health and safe food production. Pdf remediation of heavy metal contaminated soil by. Remediation of heavy metal contaminated soil by asymmetrical. Amendments for heavy metal remediation in contaminated soil. It has the advantages of good repair effect and short repair cycle, and has attracted wide attention. Pdf on sep, 2018, manoj shrivastava and others published amendments for heavy metal remediation in contaminated soil find, read and cite all the research you need on researchgate. Metal bearing solids at contaminated sites can originate from a wide variety of. Heavy metals contaminated soil it is important to remediate soil contaminated by heavy metal as it poses threat to soil quality, environment, animals and society. Remediation of metalscontaminated soils and groundwater 3 2. Excavation and transport of soil contaminated with heavy metals has generally been the standard remediation technique for treatment of heavymetalcontaminated soils.
A comparison of technologies for remediation of heavy. The development of remediation processes for heavy metal contaminated groundwater is thus necessary. Increased soil pollution with heavy metals due to various human and natural activities has led to a growing need to address en vironmental contamination. With the new era of urbanization and industrialization, soils have. Remediation of metal contaminated soils evaluation of longterm effects of zerovalent iron amendments supervisor. Remediation of heavy metal contaminated soil request pdf.
Selection of the most appropriate soil remediation method depends on site characteristics, concentration, types of pollutants to be removed and the final use of a contaminated medium. The remediation process for heavy metal contaminant is a huge concern as it is not biodegradable and to discover the best method that cost. Pdf increased soil pollution with heavy metals due to various human and natural activities has led to a growing need to address. This paper talks about the mechanization of plantmicrobial remediation, finds the advantages and disadvantages about plantmicrobial technology, summarizes the method of selection of the plant. This new volume on heavy metals in soil will be of interest to researchers and scholars in microbial and plant biotechnology, agriculture, the environmental sciences and soil ecology. Remediation methods of contaminated soils with heavy metals can be roughly classified into physical or chemical, and phytoremediation 1. Journal of geochemical exploration, elsevier, 2016, 182, pp.
For heavy metal contaminated soils, the physical and chemical form of the heavy metal contaminant in soil strongly influences the selection of the appropriate remediation treatment approach. Metal pollution in soils is a widespread international problem resulting form mining and ore refinement, nuclear processing and the industrial manufacture of a variety of products including batteries, metal. Phytostabilization of heavy metal contaminated sites lili aye, yongshan chen,b, yudao chen,a lianwen qian,b,c wenli xiong,b jinghua xu,b and jinping jiang a, phytoremediation of. This study assesses plant growth and bioaccumulation of heavy metals following remediation of industrially contaminated soil. Recently, application of lowfrequency ultrasonic waves aided desorption of pollutants due to microscale sonophysical effects and macroscale mixing park and. Insitu remediation techniques for heavy metalcontaminated soils insitu remediation does not require excavation and transport of the contaminated soil to offsite treatment facilities and therefore, soil disturbance is minimized, exposure of workers and the surrounding public to the contaminants is reduced, and the treatment cost may be. Removal of heavy metal from contaminated soil with. This paper will pay attention tosome new developed methods based on removal ofthe metals from the soil. Remediation of heavy metals polluted soil using metal. Insolubilization treatment for soil contaminated with heavy metals. The heavy metal ion negative electrode is produced on the surface of the charged cell or on the surface of the internal cell, which is produced during the process of soil. Remediation of heavymetal contaminated soils using.
Vermiremediation of heavy metalcontaminated soil journal. Depending on the site characteristics geographical location, types of cocontaminants, climate, depth, soil type, ph levels, water content, particle size, clay, etc, site. The contamination of groundwater by heavy metal, originating either from natural soil sources or from anthropogenic sources is a matter of utmost concern to the public health. New developments in treatment of heavy metal contaminated. In developing countries waste management has become a major problem that is coming with health risks due to heavy metals and other types of biohazard. Phytoremediation of heavy metalcontaminated soil by switchgrass. To study the characteristics of heavy metal contaminated soils and remediation soil contamination soil contamination is the presence of manmade chemicals or other alteration of the natural soil environment. Remediation of heavy metal contaminated agricultural soil revathy v s mtech student. Pdf amendments for heavy metal remediation in contaminated soil. A comparison of technologies for remediation of heavy metal. Chemical processes have been widely applied to surface wastewater treatment.
Remediation technologies for heavy metal contaminated groundwater. Heavy metal contamination can be carried with soil particles swept away from the initial areas of pollution by wind and rain. Pdf the major frequent contaminants in soil are heavy metals which may be responsible for detrimental health effects. T he extraction is generally carr ied out ex situ, and also. Longterm experiment and plant assay show the high sustainability of the method and its feasibility for agricultural use.
Heavy metal ions, one kind of harmful substance, may exist in the soil irrelevant to artificial development, and soil contamination, due to soil and rock containing these naturally derived heavy metals, has recently become apparent. Heavy metal, contaminated soil, remediation techniques, electrokinetic remediation, enhancement techniques introduction due to rapid industrialization and urbanization, soils are increasingly getting polluted. However, research in this area is lagging behind relative to that concerning surface water treatment processes 912. Remediation of contaminated groundwater is of highest priority since billions of people all over the world use it for drinking purpose. Review remediation of heavy metal contaminated ecosystem. Fixed amounts of single metal contaminated soil were treated with succinic acid under varying conditions of ph and organic ligand concentration. The goal of microbial remediation of heavy metal contaminated soils and sediments are to immobilize the metal in situ to reduce metal bioavailability and mobility or to remove the metal from the soil. Metal pollution in soils is a widespread international problem resulting form mining and ore refinement, nuclear processing and the industrial manufacture of a variety of products including batteries, metal alloys and electrical components roane, et al. Remediation of heavy metal contaminated agricultural soil. Remediation of metal contaminated soils soil remediation is described as the use of several procedures to reduce, remove or mitigate the contamination of a certain area or land 14.
Test vermiremediation as a lowcost, onsite method of remediating heavy metal soil contamination. The methods landfilling, soil washing, and solidification are well established. Cleanup or remediation technologies available for reducing the harmful effects at heavy metal. Phytostabilization of heavy metal contaminated sites lili aye, yongshan chen,b, yudao chen,a lianwen qian,b,c wenli xiong,b jinghua xu,b and jinping jiang a, phytoremediation of metal contaminated soil can be an ecofriendly technology. The heavy metal ion negative electrode is produced on the surface of the charged cell or on the surface of the internal cell, which is produced during the process of soil microorganisms utilizing the soil for effective nutrition. Insitu remediation techniques for heavy metal contaminated soils insitu remediation does not require excavation and transport of the contaminated soil to offsite treatment facilities and therefore, soil disturbance is minimized, exposure of workers and the surrounding public to the contaminants is reduced, and the treatment cost may be. Study on plantmicrobial remediation of antibiotic and heavy.
Thomas institute for science and technology trivandrum, india abstract heavy metal contamination is increasing day by day. Engineered bioremediation has in situ remediation which entails remediation at the source of pollution and ex situ remediation which involves excavating soil from the point of pollution 4, 5. In this paper, the sources of heavy metal contaminated soil, the existing soil remediation technology, and the research progress of heavy metal contaminated. The adequate protection and restoration of soil ecosystems contaminated by heavy metals require their characterization and remediation. Remediation technologies for heavy metal contaminated. Thomas institute for science and technology trivandrum, india dr.
The invention provides a method for remediation of heavy metal contaminated soil. Phytoremediation of heavy metalcontaminated soil by. Except for uncommon geogenic origins, heavy metal contaminants are inadvertently introduced to soils through anthropogenic activities such as mining, smelting, warfare and military training, electronic industries, fossil fuel consumption, waste disposal, agrochemical use, and. Characteristics and remediation of heavy metal contaminated. Further topics addressed include strategies of bioremediation, e. Phytomanagement of a chromiumcontaminated soil by a highvalue plant. Chemical extraction, soil remediation, copper, nickel, chitosan, edta, sodium citrate.
Plantmicrobial remediation is promising for the management of antibiotics and heavy metals pollution in soil. This remediation method is based on a key concept of asymmetrical alternating current electrochemistry aace to be explained later, which enables recycling of soil washing chemicals and eliminates secondary pollution. Markus pushenreiter, institute of soil research, university of natural. Thus, in an amendment that came into effect in 2010 of japan, the scope of countermeasures and regulations for contaminated soil was amended to contaminated. Soil remediation scenarios for heavy metal contaminated soil.
Paper open access discussion on microbial remediation. Application of heavy metalcontaminated water in agricultural fields has led to their. As a result of the application of this electric field, heavy metal contaminants may be mobilized, concentrated at the electrodes, and extracted from the soil. Remediation of heavy metalloids contaminated soils to. Recent advances in conventional and contemporary methods. Gradwohl extensive lead pb and zinc zn ore mining and smelting have resulted in contamina. Nowadays, industries are practicing open dumping, since it is an.
1266 1067 132 777 637 917 1218 956 534 1390 1115 1495 1252 1321 312 1071 195 762 1023 28 595 1171 881 480 748 119 534 811 836 1009 842 702 355 1240 926 220 854 694 45 901