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Phytoremediation of heavy metal

Jongkeun Lee, Joonrae Roger Kim, Seulki Jeong, Jinwoo Cho, Jae Young Kim
In order to investigate the long-term stability on the performance of the anaerobic digestion process, a laboratory-scale continuous stirred-tank reactor (CSTR) was operated for 1100 days with sunflower harvested in a heavy metal contaminated site. Changes of microbial communities during digestion were identified using pyrosequencing. According to the results, soluble heavy metal concentrations were lower than the reported inhibitory level and the reactor performance remained stable up to OLR of 2.0g-VS/L/day at HRT of 20days...
October 17, 2016: Waste Management
Vladica Čudić, Dragoslava Stojiljković, Aleksandar Jovović
Phytoremediation is an emerging technology that employs higher plants to cleanup contaminated environments, including metal-polluted soils. Because it produces a biomass rich in extracted toxic metals, further treatment of this biomass is necessary. The aim of our study was to assess the five-year potential of the following native wild plants to produce biomass and remove heavy metals from a polluted site: poplar (Populus ssp.), ailanthus (Ailanthus glandulosa L.), false acacia (Robinia pseudoacacia L.), ragweed (Artemisia artemisiifolia L...
September 1, 2016: Arhiv za Higijenu Rada i Toksikologiju
Zhugui Wen, Liang Shi, Yangze Tang, Zhenguo Shen, Yan Xia, Yahua Chen
We used Pisolithus tinctorius and Cenococcum geophilum to determine the copper (Cu) resistance of ectomycorrhizal (ECM) fungi and their potential for improving phytoremediation of Cu-contaminated soil by Chinese red pine (Pinus tabulaeformis). The results showed that nutrient accumulation in C. geophilum mycelium was significantly lower under higher Cu concentrations in the soil, which was not observed in P. tinctorius. Meanwhile, P. tinctorius exhibited greater Cu tolerance than C. geophilum. Inoculation with ECM fungi significantly improved the growth of pine shoots planted in polluted soil in pot experiments (p < 0...
October 14, 2016: International Journal of Phytoremediation
José Marrugo-Negrete, Germán Enamorado-Montes, José Durango-Hernández, José Pinedo-Hernández, Sergi Díez
Phytoremediation has received increased attention over the recent decades, as an emerging and eco-friendly approach that utilizes the natural properties of plants to remediate contaminated water, soils or sediments. The current study provides information about a pilot-scale experiment designed to evaluate the potential of the anchored aquatic plant Limnocharis flava for phytoremediation of water contaminated with mercury (Hg), in a constructed wetland (CW) with horizontal subsurface flow (HSSF). Mine effluent used in this experiment was collected from a gold mining area located at the Alacran mine in Colombia (Hg: 0...
October 5, 2016: Chemosphere
Jorge Alberto Romero-Hernández, Araceli Amaya-Chávez, Patricia Balderas-Hernández, Gabriela Roa-Morales, Nelly González-Rivas, Miguel Ángel Balderas-Plata
In the present investigation, four macrophytes, namely, Typha latifolia (L.), Lemna minor (L.), Eichhornia crassipes (Mart.) Solms-Laubach and Miriophyllum aquaticum (Vell.) Verdc, were evaluated for their heavy metal (Cu, Pb, Hg and Zn) hyperaccumulation potential under laboratory conditions. Tolerance analyses were performed for 7 days of exposure at five different treatments of the metals mixture (Cu(+2), Hg(+2), Pb(+2) and Zn(+2)). The production of chlorophyll and carotenoids was determined at the end of each treatment...
August 11, 2016: International Journal of Phytoremediation
Tingting Ma, Liqiang Zhou, Li 'ke Chen, Zhu Li, Longhua Wu, Peter Christie, Yongming Luo
Excessive use of antibiotics potentially threatens human health, agricultural production and soil phytoremediation. This arouses concern over the potential adverse effects of a commonly used antibiotic, oxytetracycline (OTC), on plants used for soil remediation and possible stimulation of antibiotic resistance genes in soils. A greenhouse experiment was conducted to investigate different rates (0, 1, 5, and 25 mg kg-1) and frequencies (one single high and daily low application) of OTC addition to soil on phytoremediation of a heavy metal contaminated soil by Sedum plumbizincicola and/or Medicago sativa (alfalfa)...
October 5, 2016: Journal of Agricultural and Food Chemistry
Jia Tong, Cao Miaowen, Jing Juhui, Liu Jinxian, Chai Baofeng
We conducted a survey of native grass species infected by endophytic fungi in a copper tailings dam over progressive years of phytoremediation. We investigated how endophytic fungi, soil microbial community structure and soil physiochemical properties and enzymatic activity varied in responses to heavy metal pollution over different stages of phytoremediation. endophyte infection frequency increased with years of phytoremediation. Rates of endophyte infection varied among different natural grass species in each sub-dam...
September 22, 2016: Science of the Total Environment
Dana Luminița Sobariu, Daniela Ionela Tudorache Fertu, Mariana Diaconu, Lucian Vasile Pavel, Raluca-Maria Hlihor, Elena Niculina Drăgoi, Silvia Curteanu, Markus Lenz, Philippe François-Xavier Corvini, Maria Gavrilescu
Certain species of plants can benefit from synergistic effects with plant growth-promoting rhizobacteria (PGPR) that improve plant growth and metal accumulation, mitigating toxic effects on plants and increasing their tolerance to heavy metals. The application of PGPR as biofertilizers and atmospheric nitrogen fixators contributes considerably to the intensification of the phytoremediation process. In this paper, we have built a system consisting of rhizospheric Azotobacter microbial populations and Lepidium sativum plants, growing in solutions containing heavy metals in various concentrations...
September 9, 2016: New Biotechnology
Emanuele Moccia, Adriano Intiso, Angela Cicatelli, Antonio Proto, Francesco Guarino, Patrizia Iannece, Stefano Castiglione, Federico Rossi
Trichloroethylene (TCE) is a chlorinated aliphatic organic compound often detected as pollutant in soils and ground water. "Green technologies" based on phytoremediation were proven to be effective to reclaim organic pollutants (e.g. TCE) and heavy metals from different environmental matrices. In this work, we use Zea mays L. for the removal of high TCE concentrations from medium cultures. In particular, we investigated a sealed bioreactor where the growth medium was contaminated with an increasing amount of TCE, in the range 55-280 mg/L; the removal capability of the maize plants was assessed by means of GC-MS and LC-MS analyses...
September 13, 2016: Environmental Science and Pollution Research International
Mir Md Abdus Salam, Erik Kaipiainen, Muhammad Mohsin, Aki Villa, Suvi Kuittinen, Pertti Pulkkinen, Paavo Pelkonen, Lauri Mehtätalo, Ari Pappinen
Salix schwerinii was tested in a pot experiment to assess plant growth performance i.e., relative height and dry biomass and the potential for heavy metal uptake in soils polluted with chromium, zinc, copper, nickel and total petroleum hydrocarbons. The soil used in the pot experiment was collected from a landfill area in Finland. Peat soil was added at different quantities to the polluted soil to stimulate plant growth. The plants were irrigated with tap water or processed water (municipal waste water) to further investigate the effects of nutrient loading on plant biomass growth...
December 1, 2016: Journal of Environmental Management
Jacek Antonkiewicz, Barbara Kołodziej, Elżbieta Jolanta Bielińska
The aim of the study was to evaluate the efficacy of the multiflora rose var. 'Jatar' (Rosa multiflora Thunb. ex Mur) and the Virginia fanpetals (Sida hermaphrodita Rusby) to phytoextract heavy metals from municipal sewage sludge. The 6-year field experiment involved four levels of fertilization with sewage sludge at doses of 0, 10, 20, 40, and 60 Mg DM sludge · ha(-1). The increasing doses of sewage sludge were found to increase significantly the yield of multiflora rose and Virginia fanpetals biomass. They also significantly elevated the content of heavy metals in these plants...
September 7, 2016: International Journal of Phytoremediation
Chinnathambi Sarathambal, Premraj Jagoji Khankhane, Yogita Gharde, Bhumesh Kumar, Mayank Varun, Sellappan Arun
In this study, plant growth promoting potential isolates from rhizosphere of 10 weed species grown in heavy metal contaminated areas were identified and their effect on growth, antioxidant enzymes and cadmium (Cd) uptake in Arundo donax was explored. Plant growth promoting traits of isolates were also analysed. These isolates were found to produce siderophores and enzymes like 1-aminocyclopropane-1-carboxylate (ACC) deaminase which solubilizes minerals and modulate plant growth and development. Based on the presence of multiple plant growth promoting traits, isolates were selected for molecular characterization and inoculation studies...
September 3, 2016: International Journal of Phytoremediation
Yongqiang Yuan, Shen Yu, G S Bañuelos, Yunfeng He
Tanning sludge enriched with high concentrations of Cr and other metals has adverse effects on the environment. Plants growing in the metalliferous soils may have the ability to cope with high metal concentrations. This study focuses on potentials of using native plants for bioindication and/or phytoremediation of Cr-contaminated sites. In the study, we characterized plants and soils from six tanning sludge storage sites. Soil in these sites exhibited toxic levels of Cr (averaged 16,492 mg kg(-1)) and other metals (e...
August 23, 2016: Environmental Science and Pollution Research International
Laila Midhat, Naaila Ouazzani, Mouhsine Esshaimi, Ahmed Ouhammou, Laila Mandi
The present paper aims to perform a screening of native plants growing in Kettara mine-Marrakech (Southern Morocco) for its phytoremediation. Plants and soil samples were collected and analyzed for Pb, Zn, Cu and Cd concentrations at several sites in the mine. The results showed that the soil in the vicinity of Kettara mine is deficient in major elements and contain toxic levels of metals. Spontaneously growing native plants were botanically identified then classified into 21 species and 14 families. Significant difference was observed among the average concentrations of four heavy metals (Pb, Zn, Cu and Cd) in plants (P ≤ 0...
August 23, 2016: International Journal of Phytoremediation
Ádám Solti, Éva Sárvári, Erzsébet Szöllősi, Brigitta Tóth, Ilona Mészáros, Ferenc Fodor, Zoltán Szigeti
Cadmium (Cd), a highly toxic heavy metal affects growth and metabolic pathways in plants, including photosynthesis. Though Cd is a transition metal with no redox capacity, it generates reactive oxygen species (ROS) indirectly and causes oxidative stress. Nevertheless, the mechanisms involved in long-term Cd tolerance of poplar, candidate for Cd phytoremediation, are not well known. Hydroponically cultured poplar (Populus jacquemontiana var. glauca cv. 'Kopeczkii') plants were treated with 10 μM Cd for 4 weeks...
September 1, 2016: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
Ramkrishna Nirola, Mallavarapu Megharaj, Simon Beecham, Rupak Aryal, Palanisami Thavamani, Kadiyala Vankateswarlu, Christopher Saint
Understanding plant behaviour in polluted soils is critical for the sustainable remediation of metal-polluted sites including abandoned mines. Post-operational and abandoned metal mines particularly in semi-arid and arid zones are one of the major sources of pollution by soil erosion or plant hyperaccumulation bringing ecological impacts. We have selected from the literature 157 species belonging to 50 families to present a global overview of 'plants under action' against heavy metal pollution. Generally, all species of plants that are drought, salt and metal tolerant are candidates of interest to deal with harsh environmental conditions, particularly at semi-arid and arid mine sites...
August 19, 2016: Environmental Science and Pollution Research International
L Benidire, S I A Pereira, P M L Castro, A Boularbah
Soil heavy metal contamination resulting from mining activities constitutes a major environmental problem worldwide. The spread of heavy metals is often facilitated by scarce vegetation cover, so there is an urgent need to improve plant survival and establishment in these metalliferous areas. This study is aimed at the isolation and analysis of the phylogenetic relationship of culturable bacteria from the rhizosphere of metallophyte plants growing in the Kettara mine, in Marrakech, in order to select plant growth-promoting rhizobacteria (PGPR), which could be used in assisted-phytoremediation...
August 13, 2016: Environmental Science and Pollution Research International
Suchismita Das, Kisholay Mazumdar
The study was conducted with an aim to remediate effluent from a pulp and paper mill, after treating it for 28 days with an aquatic fern, Salvinia cucullata. The effluent had high BOD, COD, TS, TSS, TDS, P, hardness and chloride, and several heavy metals (Cd, Cu, Cr, Ni, Pb, Mg, Mn, Fe and Zn) above national limits. However, the plant survived a wide range of effluent concentrations (25%, 50%, 75% and 100%, v/v), and flourished well, particularly at 25% (v/v), resisted membrane injury and generation of H2O2 and O2, showed better growth and induced all the major antioxidant enzymes...
November 2016: Chemosphere
Jia-Chuan Zheng, Hou-Qi Liu, Hui-Min Feng, Wen-Wei Li, Michael Hon-Wah Lam, Paul Kwan-Sing Lam, Han-Qing Yu
Heavy metal pollution is a global issue severely constraining aquaculture practices, not only deteriorating the aquatic environment but also threatening the aquaculture production. One promising solution is adopting aquaponics systems where a synergy can be established between aquaculture and aquatic plants for metal sorption, but the interactions of multiple metals in such aquatic plants are poorly understood. In this study, we investigated the absorption behaviors of Cu(II) and Cd(II) in water by water hyacinth roots in both single- and binary-metal systems...
August 9, 2016: Environmental Pollution
Jinfeng Xing, Tiantian Hu, Long Cang, Dongmei Zhou
The particle size of apatite is one of the critical factors that influence the adsorption of heavy metals on apatite in the remediation of heavy metal contaminated soils using apatite. However, little research has been done evaluating the impact of different particle sizes of apatite on immobilization remediation of heavy metal polluted soils in field. In this study, the adsorption isothermal experiments of copper on three kinds of apatite was tested, and the field experiment by using different particle sizes apatite [nano-hydroxyapatite (NAP), micro-hydroxyapatite (MAP), ordinary particle apatite (OAP)] at a same dosage of 25...
2016: SpringerPlus
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