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International Journal of Phytoremediation

Tanveer Bilal Pirzadah, Bisma Malik, Inayatullah Tahir, Qureshi M Irfan, Reiaz Ul Rehman
The effect of mercury stress on antioxidant enzymes, lipid peroxidation, photosynthetic pigments, hydrogen peroxide content, osmolytes and growth parameters in tartary buckwheat were investigated. The effect of Hg-exposure was found to be time (15 and 30 days) and concentration (0, 25, 50 and 75 μM) dependent. Hg was readily absorbed by seedlings with higher content in roots and it resulted in reduction of root and shoot length. The root and shoot Hg uptakes were significantly and directly correlated with each other...
November 27, 2017: International Journal of Phytoremediation
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December 2, 2017: International Journal of Phytoremediation
Sana Khalid, Muhammad Shahid, Camille Dumat, Nabeel Khan Niazi, Irshad Bibi, Hafiz Faiq Sidique Gul Bakhat, Ghulam Abbas, Behzad Murtaza, Hafiz Muhammad Rashid Javeed
The current study evaluated the effect of groundwater and wastewater irrigation on lead (Pb) accumulation in soil and vegetables, and its associated health implications. A pot experiment was conducted in which spinach (Spinacia oleracea), radish (Raphanus sativus), and cauliflower (Brassica oleracea) were irrigated with groundwater and wastewaters containing varying concentrations of Pb. Lead contents were measured in wastewaters, soils and root and shoot of vegetables. We also measured health risk index (HRI) associated with the use of vegetables irrigated by wastewaters...
November 2, 2017: International Journal of Phytoremediation
Noureddine El Messaoudi, Abdellah Dbik, Mohammed El Khomri, Abderrahman Sabour, Safae Bentahar, Abdellah Lacherai
This study investigated the biosorption of Congo Red (CR) from aqueous solution by Date stones (DS) of Phoenix dactylifera and jujube shells (JS) of Ziziphus lotus. Batch operations were carried out in the liquid phase to observe the effect of various experimental parameters such as contact time, pH, temperature, and initial dye concentration on removal of CR. The characteristics of the DS and JS were also examined by Fourier transform infrared analysis. The biosorption data of CR on DS and JS samples were well fitted with the Langmuir isotherm and pseudo-second kinetics model with a maximum biosorption amount of 45...
November 2, 2017: International Journal of Phytoremediation
Inga Zinicovscaia, Liliana Cepoi, Tatiana Chiriac, Tatiana Mitina, Dmitrii Grozdov, Nikita Yushin, Otilia Culicov
The cyanobacterium Arthrospira (Spirulina) platensis was used to study the process of silver biosorption. Effects of various parameters such as contact time, dosage of biosorbent, initial pH, temperature, and initial concentration of Ag(I) were investigated for a batch adsorption system. The optimal biosorption conditions were determined as pH 5.0, biosorbent dosage of 0.4 g, and initial silver concentration of 30 mg/L. Equilibrium adsorption data were analyzed by the Langmuir and Freundlich models - however, the Freundlich model provided a better fit to the experimental data...
November 2, 2017: International Journal of Phytoremediation
Sadia Bibi, Abida Farooqi, Azra Yasmin, Muhammad Aqeel Kamran, Nabeel Khan Niazi
Finding appropriate adsorbent may improve the quality of drinking water in those regions where arsenic (As) and fluoride (F(-)) are present in geological formations. In this study, we evaluated the efficiency of potato peel and rice husk ash (PPRH-ash)-derived adsorbent for the removal of As and F from contaminated water. Evaluation was done in batch adsorption experiments, and the effect of pH, initial adsorbate concentration, contact time, and adsorbent dose were studied. Characteristics of adsorbents were analyzed using scanning electron micropcope (SEM) and Fourier transform infrared (FTIR) spectroscopy...
November 2, 2017: International Journal of Phytoremediation
Dmitry I Bashmakov, Alina N Kluchagina, Przemysław Malec, Kazimierz Strzałka, Alexander S Lukatkin
Among trace metals, lead is a highly toxic contaminant, being hazardous to humans and animals. Application of maize plants for phytoremediation of polluted soils and waters has recently been of particular interest. The aim of this work is to investigate the Pb-phytoextraction potential of the maize cv. Tzariza used widely in Eastern European agriculture. Maize seedlings were exposed in a nutrient solution to 1-10000 µM of Pb(2+) for 21 days. Lead accumulated mostly in conductive tissues and shoots at 0.1 mM and higher concentrations of Pb in growth medium...
November 2, 2017: International Journal of Phytoremediation
Zahid Khorshid Abbas
This work investigates the phytoremediation potential of Aeluropus lagopoides and Cyperus conglomeratus, growing indigenously in the vicinity of an artificial lake of reclaimed water in Tabuk, Saudi Arabia . The sampling sites were located at different distances from the wastewater treatment plants. Trace metal contents were higher in roots than shoots in both these plants. Soil urease activity in rhizophere increased linearly along the sampling sites, however, soil alkaline phosphatase and β-glucosidase activities were higher at site 2 but at site 3, the activities of both these soil enzymes reduced...
November 2, 2017: International Journal of Phytoremediation
Sohair I Abou-Elela, Mohamed A Elekhnawy, Magdy T Khalil, Mohamed S Hellal
The effect of hydraulic loading rate (HLR) and hydraulic retention time (HRT) on the bioremediation of municipal wastewater using a pilot scale subsurface horizontal flow constructed treatment wetland (HFCTW) vegetated with Cyprus papyrus was investigated. Different HLRs were applied to the treatment system namely 0.18, 0.10, and 0.07 m(3)/m(2). d with corresponding HRTs of 1.8, 3.2, and 4.7 days, respectively. The flow rate was 8 m(3)/d, and the average organic loading rate (OLR) was 0.037 kg BOD/m(3)/d...
November 2, 2017: International Journal of Phytoremediation
Vibha Sinha, Kannan Pakshirajan, N Arul Manikandan, Rakhi Chaturvedi
Discharge of wastewater from electroplating and leather industries is a major concern for the environment due to the presence of toxic Cr(6+) and other ions, such as sulfate, nitrate, phosphate, etc. This study evaluated the potential of Tradescantia pallida, a plant species known for its Cr bioaccumulation, for the simultaneous removal of Cr(6+), SO4(2-), NO3(-), and PO4(3-). The effect of different co-ions on Cr(6+) removal by T. pallida was examined following the Plackett-Burman design of experiments carried out under batch hydroponics conditions...
November 2, 2017: International Journal of Phytoremediation
Li Jian, Yan Chongling, Du Daolin, Lu Haoliang, Liu Jingchun
Avicennia marina is a high-Cd-tolerant species in the mangrove wetlands. A hydroponic experiment was carried out to research the accumulation and chemical form distribution of Cd in the tissues of A. marina under different concentrations and durations of Cd stress. It was found that the concentrations of Cd in plant tissues followed the order of root > stem > leaf. The data suggested that root activity decreased, Cd accumulation ability weakened in roots, and the translocation factor increased in stems and leaves with the increase of stress duration...
November 2, 2017: International Journal of Phytoremediation
Sajad Hussain, Muhammad Akram, Ghulam Abbas, Behzad Murtaza, Muhammad Shahid, Noor S Shah, Irshad Bibi, Nabeel Khan Niazi
The present study was conducted to explore arsenic (As) tolerance and phytostabilization potential of the two tree species, buttonwood (Conocarpus erectus) and eastern cottonwood (Populus deltoides). Both plant species were grown in pots and were exposed to various soil As levels (control, 5, 10, 15, and 20 mg kg(-1)). The plants were harvested after 9 months for the evaluation of growth parameters as well as root and shoot As concentrations. With increasing soil As levels, plant height stress tolerance index (PHSTI) was significantly decreased in both tree species, whereas root length stress tolerance index (RLSTI) and dry matter stress tolerance index (DMSTI) were not affected...
November 2, 2017: International Journal of Phytoremediation
Tarek M Galal, Fatma A Gharib, Safia M Ghazi, Khalid H Mansour
The present study was conducted to investigate the potential of Vossia cuspidata as a phytoremediator to accumulate heavy metals from polluted water bodies. Thirty-two quadrats, distributed equally in eight sites (six polluted sites along the Ismailia canal and two unpolluted sites along the Nile River) were selected seasonally for plant, water, and sediment investigations. Winter plants recorded the highest values of shoot height, diameter, and leaf width, but the lowest shoot density. Plants collected in autumn had the lowest values of leaf length, width, and area, while those collected in spring had the highest shoot density, with the lowest shoot height...
November 2, 2017: International Journal of Phytoremediation
M Šimek, D Elhottová, M Mench, L Giagnoni, P Nannipieri, G Renella
Phytomanagement of trace element-contaminated soils can reduce soil toxicity and restore soil ecological functions, including the soil gas exchange with the atmosphere. We studied the emission rate of the greenhouse gases (GHGs) CO2, CH4, and N2O; the potential CH4 oxidation; denitrification enzyme activity (DEA), and glucose mineralization of a Cu-contaminated soil amended with dolomitic limestone and compost, alone or in combination, after a 2-year phytomanagement with a mixed stand of Populus nigra, Salix viminalis, S...
November 2, 2017: International Journal of Phytoremediation
Maria Sotenko, Stuart Coles, Guy Barker, Lijiang Song, Ying Jiang, Philip Longhurst, Tamara Romanova, Olga Shuvaeva, Kerry Kirwan
During the last few decades, phytoremediation process has attracted much attention because of the growing concerns about the deteriorating quality of soil caused by anthropogenic activities. Here, a tandem phytoremediation/biorefinery process was proposed as a way to turn phytoremediation into a viable commercial method by producing valuable chemicals in addition to cleaned soil. Two agricultural plants (Sinapis alba and Helianthus annuus) were grown in moderately contaminated soil with ca. 100 ppm of Ni and further degraded by a fungal lignin degrader-Phanerochaete chrysosporium...
November 2, 2017: International Journal of Phytoremediation
Fulya Aydın Temel, Esin Avcı, Yüksel Ardalı
In the present study, a full scale horizontal subsurface flow constructed wetland was designed, constructed and operated to treat domestic wastewater of Kızılcaören village in Samsun city of Turkey. The total surface area of HSFCW was divided into equal parts. The effects of Juncus acutus L. and Cortaderia selloana (Schult.Schult.f.)Asch.&Graebn. on pollutants removal in HSFCWs were evaluated with the meteorological factors. The average removal efficiencies of J. acutus and C. selloana were determined as 60...
October 20, 2017: International Journal of Phytoremediation
Yin Sim Ng, Derek Juinn Chieh Chan
Macrophytes have been used to mitigate eutrophication and upgrade effluent quality via their nutrient removal capability. However, the available data are influenced by factors such as microbial activities, weather, and wastewater quality, making comparison between nutrient removal performance of different macrophytes almost impossible. In this study, phytoremediation by Spirodela polyrhiza, Salvinia molesta and Lemna sp. were carried out axenically in synthetic wastewater under controlled condition to precisely evaluate nutrient removal efficiency of NO3(-)-N, PO4(3-), NH3-N, COD and pH in the water sample...
October 20, 2017: International Journal of Phytoremediation
Peng Zeng, Zhaohui Guo, Xia Cao, Xiyuan Xiao, Yanan Liu, Lei Shi
In a greenhouse experiment, five ornamental plants, Osmanthus fragrans (OF), Ligustrum vicaryi L. (LV), Cinnamomum camphora (CC), Loropetalum chinense var. rubrum (LC), and Euonymus japonicas cv. Aureo-mar (EJ), were studied for the ability to phytostabilization for Cd-contaminated soil. The results showed that these five ornamental plants can grow normally when the soil Cd content is less than 24.6 mg·kg(-1). Cd was mainly deposited in the roots of OF, LV, LC and EJ which have grown in Cd-contaminated soils, and the maximum Cd contents reached 15...
October 20, 2017: International Journal of Phytoremediation
Bárbara O Nardis, Enilson B Silva, Paulo H Grazziotti, Luís R F Alleoni, Leônidas C A Melo, Múcio M M Farnezi
Zinc is an important micronutrient to plant growth, but when present in large quantities it can become a toxic element to plants. This study was aimed to evaluate the growth, concentration, accumulation and availability of Zn to forage grasses (Megathyrsus maximus cvs. Aruana and Tanzania, Urochloa brizantha cvs. Xaraés and Marandu and Urochloa decumbens cv. Basilisk) cultivated in Zn contaminated soils. The experiments were conducted under greenhouse conditions over a 90-day evaluation period, and Zn rates were 0, 100, 300 and 900 mg kg(-1) of soil...
October 20, 2017: International Journal of Phytoremediation
Sifau A Adejumo, Sarita Tiwari, Vilas Shinde, Bijaya Ketan Sarangi
Activities at root-soil interface determine the solubility and uptake of metals by plants. Metal accumulation in plant species (Imperata cylindrical, Cynodon dactylon, Eleucine indica, Gomphrena celosoides, Sporobolus pyramidalis, Chromolaena odorata and Rhynchospora corymbosa) growing on Pb contaminated site as influenced by variations in physico-chemical characteristics, dissolved organic matter (DOM), Pb fractionation and different functional groups (using Fourier Transmittance Infra-red) of rhizospheric and non-rhizospheric soils was assessed...
October 20, 2017: International Journal of Phytoremediation
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