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International Journal of Phytoremediation

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https://www.readbyqxmd.com/read/28324669/bacterial-endophytes-enhance-phytostabilization-in-soils-contaminated-with-uranium-and-lead
#1
Muhammad Tayyab Ahsan, Muhammad Najam-Ul-Haq, Muhammad Idrees, Inayat Ullah, Muhammad Afzal
The combined use of plants and bacteria is a promising approach for the remediation of polluted soil. In the current study, the potential of bacterial endophytes in partnership with Leptochloa fusca (L.) Kunth was evaluated for the remediation of uranium (U)- and lead (Pb)-contaminated soil. L. fusca was vegetated in contaminated soil and inoculated with three different endophytic bacterial strains, Pantoea stewartii ASI11, Enterobacter sp. HU38, and Microbacterium arborescens HU33, individually as well as in combination...
March 21, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28324662/arsenic-tolerance-and-phytoremediation-potential-of-conocarpus-erectus-l-and-populus-deltoides-l
#2
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 exposed to various soil As levels (control, 5, 10, 15 and 20 mg kg(-1)) in pots. The plants were harvested after nine months for 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...
March 21, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28323452/how-to-manage-plant-biomass-originated-from-phytotechnologies-gathering-perceptions-from-end-users
#3
V Bert, S Neu, I Zdanevitch, W Friesl-Hanl, S Collet, R Gaucher, M Puschenreiter, I Müller, J Kumpiene
A questionnaire survey was carried out in 4 European countries to gather end-user's perceptions of using plants from phytotechnologies in combustion and anaerobic digestion (AD). 9 actors of the wood energy sector from France, Germany and Sweden, and 11 AD platform operators from France, Germany and Austria were interviewed. Questions related to installation, input materials, performed analyses, phytostabilization and phytoextraction. Although the majority of respondents did not know phytotechnologies, results suggested that plant biomass from phytomanaged areas could be used in AD and combustion, under certain conditions...
March 21, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28323451/phytostabilization-of-heavy-metals-by-the-emergent-macrophyte-vossia-cuspidata-roxb-griff-a-phytoremediation-approach
#4
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 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 in spring had the highest shoot density, with the lowest shoot height...
March 21, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28323450/effect-of-wetland-plants-and-bacterial-inoculation-on-dissipation-of-phenanthrene
#5
Weisong Pan, Chuan Wu, Qiming Wang, Zhaohong Su, Hui Zhou, Anna King Chuen Chung, William Hartley, Long Ge
This study attempts to evaluate the capacity of wetland plants' ability to dissipate phenanthrene (PHE) under waterlogged conditions. The results indicate that Typha latifolia and Vertiveria zizanioides may efficiently degrade PHE, and were much more effective when under combined plant cultivation with the inoculation of Pseudomonas frederiksbergensis (ATCC BAA-257). Concentrations of PHE declined from 200 mg kg(-1) to less than 52 mg kg(-1) in all treatments with plant cultivation. At the end of the experimental period, PHE was undetectable in combined plant cultivation in the presence of bacteria inoculation...
March 21, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28323446/leguminosae-native-nodulating-bacteria-from-a-gold-mine-as-contaminated-soil-multi-resistance-to-trace-elements-and-possible-role-in-plant-growth-and-mineral-nutrition
#6
Wesley de M Rangel, Silvia M de Oliveira Longatti, Paulo A A Ferreira, Daiane S Bonaldi, Amanda A Guimarães, Sofie Thijs, Nele Weyens, Jaco Vangronsveld, Fatima M S Moreira
Efficient N2-fixing Leguminosae nodulating bacteria resistant to As may facilitate plant growth on As-contaminated sites. In order to identify bacteria possessing these features, 24 strains were isolated from nodules of the trap species Crotalaria spectabilis (12) and Stizolobium aterrimum (12) growing on an As-contaminated gold mine site. 16S rRNA gene sequencing revealed that most of the strains belonged to the group of α-Proteobacteria, being representatives of the genera Bradyrhizobium, Rhizobium, Inquilinus, Labrys, Bosea, Starkeya and Methylobacterium...
March 21, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28318304/sequential-role-of-biosorption-and-biodegradation-in-rapid-removal-degradation-and-utilization-of-methyl-parathion-as-a-phosphate-source-by-a-new-cyanobacterial-isolate-scytonema-sp-bhus-5
#7
Balkrishna Tiwari, Savita Singh, Sindhunath Chakraborty, Ekta Verma, Arun Kumar Mishra
A new isolate of genus Scytonema distinct from its closest relative Scytonema hofmanni was found efficient in removal and degradation of organophosphorus pesticide methyl parathion (MP). The cyanobacterial isolate was also capable to utilize the phosphorous present in the methyl parathion following its degradation which was evident from the increase in growth (chlorophyll content), biomass, protein content and total phosphorous in comparison to cyanobacterium grown in phosphate deficient cultures. The rapid removal of MP by the cyanobacterium during initial 6 hours of incubation was defined by the pseudo second order of biosorption kinetics model, which has indicated the involvement of chemosorption in initial removal of pesticide...
March 20, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28318303/toxicological-sensitivity-of-pennisetum-americanum-l-k-schum-to-atrazine-exposure
#8
Zhao Jiang, Guangxia Su, Jinmei Li, Bingbing Ma, Yukun Chen, Dexin Shan, Ying Zhang
The tolerance of Pennisetum americanum (L.) K Schum (P. americanum) to the herbicide atrazine, as well as the atrazine accumulation in exposed plants, was investigated in this study. The germination of P. americanum seeds was not significantly inhibited by exposure to atrazine at concentrations below 100 mg·L(-1). The roots of the seedlings were much more sensitive to atrazine than the shoots were, as shown by observations that shoot and root elongation were significantly inhibited by treatment with 100 mg·kg(-1) and 50 mg·kg(-1) of atrazine, respectively...
March 20, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28318301/comparative-study-on-removal-of-enteric-pathogens-from-domestic-wastewater-using-typha-latifolia-and-cyperus-rotundus-along-with-different-substrate
#9
Rita P Shingare, Sneha V Nanekar, Prashant R Thawale, R Karthik, Asha A Juwarkar
A comparative study was carried out over a period of six months to evaluate the efficiency of different substrate material along with macrophytes Typha latifolia and Cyperus rotundus in treating domestic wastewater intended for reuse in agriculture. The study was conducted over a period of six months with different retention time and observations were taken twice per month. One-way ANOVA and Tukey's HSD tests were used to determine statistical significant differences between experimental columns. Treatment with T...
March 20, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28318300/bacteria-from-wheat-and-cucurbit-plant-roots-metabolize-pahs-and-aromatic-root-exudates-implications-for-rhizodegradation
#10
Cairn S Ely, Barth F Smets
The chemical interaction between plants and bacteria in the root zone can lead to soil decontamination. Bacteria which degrade PAHs have been isolated from the rhizospheres of plant species with varied biological traits, however, it is not known what phytochemicals promote contaminant degradation. One monocot and two dicotyledon plants were grown in PAH-contaminated soil from a manufactured gas plant (MGP) site. A phytotoxicity assay confirmed greater soil decontamination in rhizospheres when compared to bulk soil controls...
March 20, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28318297/impacts-of-vegetation-and-temperature-on-the-treatment-of-domestic-sewage-in-constructed-wetlands-incorporated-with-ferric-carbon-micro-electrolysis-material
#11
Qingwei Zhou, Hui Zhu, Gary Bañuelos, Baixing Yan, Yinxiu Liang, Jing Yu, Huai Li
Ferric-Carbon Micro-Electrolysis (Fe/C-M/E) material had been widely used for the pretreatment of wastewater. Therefore, we hypothesized that Fe/C-M/E material could enhance the treatment of domestic sewage when integrated into CWs. In this study, constructed wetlands (CWs) integrated with Fe/C-M/E material were developed. During the experiment of vegetation influence, percentages of NH4(+)-N, NO3(-)-N, TN, and COD removed in polyculture (W1) were up to 91.8%, 97.0%, 92.3%, and 85.4%, respectively, which were much higher than those in Lythrum salicaria monoculture (W2) and Canna indica monoculture (W3)...
March 20, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28318295/novel-insight-into-process-of-nutrients-removal-using-an-algal-biofilm-the-evaluation-of-mechanism-and-efficiency
#12
Kateřina Sukačová, Radka Kočí, Milena Žídková, Tomáš Vítěz, Martin Trtílek
Eutrophication of water by nutrient pollution remains an important environmental issue. The aim of this study was to evaluate the nutrient uptake capacity of an algal biofilm as a means to treat polluted water. In addition, the study investigated the nutrient removal process. The algal biofilm was able to remove 99% of phosphorus within 24 hours of P addition, with the PO4-P concentration in inflowing water ranging from 3 to10 mg.L(-1). Different patterns of phosphorus and nitrogen removal were observed. Daily quantity of removed NO3-N ranged from 2 to 25% and was highly depended on solar irradiance...
March 20, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28165773/greenhouse-gas-emissions-from-a-cu-contaminated-soil-remediated-by-in-situ-stabilization-and-phytomanaged-by-a-mixed-stand-of-poplar-willows-and-false-indigo-bush
#13
M Šimek, D Elhottová, M Mench, L Giagnoni, P Nannipieri, G Renella
Phytomanagement of trace element-contaminated soils can reduce the soil toxicity and restore the soil ecological functions, including the soil gas exchange with the atmosphere. We studied the emission rate of the greenhouse gases (GHG) CO2, CH4 and N2O, and the potential CH4 oxidation, denitrification 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...
February 6, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28165761/bio-and-phytoremediation-of-total-petroleum-hydrocarbons-tph-under-various-conditions
#14
Patrick McIntosh, Cristian P Schulthess, Yulia A Kuzovkina, Karl Guillard
Remediation of contaminated soils is often studied using fine textured soils rather than low-fertility sandy soils, and few studies focus on recontamination events. This study compared aerobic and anaerobic treatments for remediation of freshly introduced used motor oil on a sandy soil previously phytoremediated and bioacclimated (microorganisms already adapted in the soil environment) with some residual total petroleum hydrocarbon (TPH) contamination. Vegetated and unvegetated conditions to remediate anthropogenic fill containing residual TPH that was spiked with non-aqueous phase liquids (NAPLs) were evaluated in a 90-day greenhouse pot study...
February 6, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28165756/enhanced-phytoremediation-of-soils-contaminated-with-pahs-by-arbuscular-mycorrhiza-and-rhizobium
#15
Cheng-Gang Ren, Cun-Cui Kong, Bian Bian, Wei Liu, Yan Li, Yong-Ming Luo, Xie Zhi-Hong
Greenhouse experiment was conducted to evaluate the potential effectiveness of a legume (Sesbania cannabina), arbuscular mycorrhizal fungi (AMF) (Glomus mosseae) and rhizobia (Ensifer sp.) symbiosis for remediation of PAHs in spiked soil. AMF and rhizobia had a beneficial impact on each other in the triple symbiosis. AMF and/or rhizobia significantly increased plant biomass and PAHs accumulation in plants. The highest PAHs dissipation was observed in plant + AMF + rhizobia treated soil, in which >97 and 85-87% of phenanthrene and pyrene, respectively, had been degraded, whereas 81-85% and 72-75% had been degraded in plant-treated soil...
February 6, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28156133/phycoremediation-of-municipal-wastewater-by-microalgae-to-produce-biofuel
#16
Amit Kumar Singh, Nikunj Sharma, Humaira Farooqi, Malik Zainul Abdin, Thomas Mock, Shashi Kumar
Municipal wastewater (WW), if not properly remediated, poses a threat to the environment and human health by carrying significant loads of nutrients and pathogens. These contaminants pollute rivers, lakes and natural reservoirs where they cause eutrophication and pathogen-mediated diseases. However, the high nutrient content of WW makes it an ideal environment for remediation with microalgae that require high nutrient concentrations for growth and are not susceptible to toxins and pathogens. Given that an appropriate algal strain is used for remediation, the incurred biomass can be refined for the production of biofuel...
February 3, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28156132/baffled-duck-weed-pond-system-for-treatment-of-agricultural-drainage-water-containing-pharmaceuticals
#17
Doaa Bassuney, Ahmed Tawfik
The aim of the study is to assess the efficiency of a novel bioremediation system namely baffled duck weed pond (BDWP) system for treatment of agricultural drainage water containing pharmaceuticals at different hydraulic retention times (HRTs). The removal efficiencies of acetaminophen (ACT), amoxicillin (AMX) and ampicillin (AMP) increased from 69.3±8.6 to 87.3 ±3.5%, from 52.9±9.4 to 82.9±5.2% and from 55.3±7.9 to 90.6±2.8% at increasing the HRT from 6 to 8 d., respectively. However, ACT, AMX and AMP removal efficiencies were slightly improved at increasing the HRT from 8 to 12 d...
February 3, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28156131/variations-in-several-morphological-characteristics-and-cd-pb-accumulation-capacities-among-different-ecotypes-of-torpedograss-responding-to-cd-pb-stresses
#18
Guijuan Gao, Xiaolong Zeng, Zhidan Li, Aikui Chen, Zhongyi Yang
Torpedograss (Panicum repens) has been recognized as a useful plant species for phytoremediation of water-level-fluctuation zones which is a worldwide challenge. In this study, 10 ecotypes collected from tropical zone and flooded habitats (Group-A) and subtropical zone and drought habitats (Group-B) were used to clarify their responses to Cd-Pb stresses and effects of long-term adaptation on their morphological features and Cd-Pb accumulation capacities. Branch capacity, shoot and root biomasses of Group-A under control were smaller than those of Group-B, while the opposite results were observed under Cd-Pb stresses...
February 3, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28156129/effects-of-citric-acid-and-the-siderophore-desferrioxamine-b-dfo-b-on-the-mobility-of-germanium-and-rare-earth-elements-in-soil-and-uptake-in-phalaris-arundinacea
#19
Oliver Wiche, Dirk Tischler, Carla Fauser, Jana Lodemann, Hermann Heilmeier
Effects of citric acid and desferrioxamine B (DFO-B) on the availability of Ge and selected REEs (La, Nd, Gd, Er) to P. arundinacea were investigated. A soil dissolution experiment was conducted to elucidate the effect of citric acid and DFO-B at different concentrations (1 and 10 mmol l(-1) citric acid) on the release of Ge and REEs from soil. In a greenhouse plants of P. arundinacea were cultivated on soil and on sand cultures to investigate the effects of citric acid and DFO-B on the uptake of Ge and REEs by the plants...
February 3, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28121475/inoculating-wheat-triticum-aestivum-l-with-the-endophytic-bacterium-serratia-sp-pw7-to-reduce-pyrene-contamination
#20
Xuezhu Zhu, Wanqing Wang, Kai Sun, Xianghao Lin, Shuang Li, Michael Gatheru Waigi, Wanting Ling
This research was conducted to find an optimal inoculation way for a pyrene-degrading endophytic Serratia sp. PW7 to colonize wheat for reducing pyrene contamination. Three inoculation ways, which are soaking seeds in inocula (TS), dipping roots of seedlings in inocula (TR), and spraying inocula on leaves of seedlings (TL), were used in this study. Inoculated seedlings and non-inoculated seedlings (CK) were respectively cultivated in Hoagland solutions supplemented with pyrene in a growth chamber. The results showed that strain PW7 successfully colonized the inoculated seedlings in high numbers, and significantly promoted the growth of seedlings (TS and TR)...
January 25, 2017: International Journal of Phytoremediation
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