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International Journal of Phytoremediation

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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
https://www.readbyqxmd.com/read/28121460/polychlorinated-biphenyls-in-alfalfa-accumulation-sorption-and-speciation-in-different-plant-parts
#9
Ying Teng, Xianghui Sun, Lingjia Zhu, Peter Christie, Yongming Luo
The accumulation, chemical speciation and distribution of polychlorinated biphenyls (PCBs) were investigated in various parts of alfalfa. Moreover, the adsorption characteristics for PCB 28 by alfalfa and the influencing factors of the adsorption characteristics were studied. There were different degrees of PCB accumulation in alfalfa roots, root nodules and shoots. The decreasing order of the accumulation of PCBs in plant tissues was root nodules > roots > shoots, and the decreasing order of the total PCB contents was roots > shoots > root nodules, indicating that the roots were the main sink for PCB accumulation...
January 25, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28121459/development-of-sustainable-dye-adsorption-system-using-nutraceutical-industrial-fennel-seed-spent-studies-with-congo-red-dye
#10
Syed Noeman Taqui, Rosiyah Yahya, Aziz Hassan, Nayan Nayak, Akheel Ahmed Syed
Fennel seed spent (FSS) - an inexpensive nutraceutical industrial spent has been used as an efficient biosorbent for the removal of Congo Red (CR) from aqueous media. Results show that pH of 2 - 4 and temperature of 30°C was ideal for maximum adsorption. Based on regression fitting of the data it was determined that the SIPS isotherm (R(2) = 0.994, χ(2) = 0.5) adequately described the mechanism of adsorption, suggesting that the adsorption occurs in a homogeneous layer by layer with favourable interaction between layers...
January 25, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28121457/extraction-of-hydrocarbons-from-freshwater-green-microalgae-botryococcus-sp-biomass-after-phycoremediation-of-domestic-wastewater
#11
Paran Gani, Norshuhaila Mohamed Sunar, Hazel Matias-Peralta, Radin Maya Saphira Radin Mohamed, Ab Aziz Abdul Latiff, Umi Kalthsom Parjo
This study was undertaken to analyze the efficiency of Botryococcus sp. in the phycoremediation of domestic wastewater and to determine the variety of hydrocarbons derived from microalgal oil after phycoremediation. The study showed a significant (p< 0.05) reduction of pollutant loads of up to 93.9% COD, 69.1% BOD, 59.9% TN, 54.5% TOC, and 36.8% phosphate. The average dry weight biomass produce was 0.1g/L of wastewater. In addition, the dry weight biomass of Botryococcus sp. was found to contain 72.5% of crude oil...
January 25, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28103078/improvement-of-phytoremediation-of-an-aged-petroleum-hydrocarbon-contaminated-soil-by-rhodococcus-erythropolis-cd-106-strain
#12
Tomasz Płociniczak, Ewa Fic, Magdalena Pacwa-Płociniczak, Małgorzata Pawlik, Zofia Piotrowska-Seget
The aim of this study was to assess the impact of soil inoculation with the Rhodococcus erythropolis CD 106 strain on the effectiveness of the phytoremediation of an aged hydrocarbon-contaminated (approx. 1% TPH) soil using ryegrass (Lolium perenne). The introduction of CD 106 into the soil significantly increased the biomass of ryegrass and the removal of hydrocarbons in planted soil. The fresh weight of the shoots and roots of plants inoculated with CD 106 increased by 49 and 30%, respectively. After 210 days of the experiment, the concentration of TPH was reduced by 31...
January 19, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28102706/co-effect-of-phosphorus-and-cadmium-interaction-on-fraction-distribution-and-accumulation-of-phosphorus-in-mangrove-sediment-system
#13
Jingna Du, Junyi Yu
Mangrove (Kandelia obovata (S. L.)) seedlings were cultivated in rhizoboxes under different rates of phosphorus (P) and cadmium (Cd) level. The speciation distributions of P both in the rhizosphere and non-rhizosphere sediments were examined using sequential extraction procedures. P contents in different Kandelia obovata (S.L.) tissues were also determined. Results showed that considerable differences existed in P speciation distribution between rhizosphere and bulk sediments. A higher proportion of iron-bound phosphate (Fe-P) was found in the rhizosphere sediments, while a relatively higher concentration of exchangeable phosphate (Ex-P) and Al-bound phosphate (Al-P) was found in the bulk sediments...
January 19, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28084804/comparative-effect-of-calcium-and-edta-on-arsenic-uptake-and-physiological-attributes-of-pisum-sativum
#14
Marina Rafiq, Muhammad Shahid, Ghulam Abbas, Saliha Shamshad, Sana Khalid, Nabeel Khan Niazi, Camille Dumat
In this study, we determined the effect of ethylenediaminetetraacetic acid (EDTA) and calcium (Ca) on arsenic (As) uptake and toxicity to Pisum sativum. Plants were treated with three levels of As (25, 125, 250 µM) in the presence and absence of three levels of Ca (1, 5, 10 mM) and EDTA (25, 125, 250 µM). Exposure to As caused an overproduction of hydrogen peroxide (H2O2) in roots and leaves, which induced lipid peroxidation and decreased pigment contents. Application of both Ca and EDTA significantly reduced As accumulation by pea, Ca being more effective in reducing As accumulation...
January 13, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28084803/growth-and-nutrient-removal-of-three-macrophytes-in-response-to-concentrations-and-ratios-of-n-and-p
#15
JianXiong Liao, DeNan Zhang, Azim Mallik, YuQing Huang, ChengXin He, GuangPing Xu
Wastewater from different sources show great differences in concentrations and ratios of N and P. In order to choose suitable plant species to remove excess N and/or P from polluted waters, it is important to know the performances of these plants under different N and P concentrations. In this study, we investigated the growth and N and P removal of three macrophytes, Coix lacryma-jobi, Iris wilsonii and Arundo donax under six N and P combination treatments. C. lacryma-jobi preferred higher N and P concentrations (16 mg N L(-1) and 3...
January 13, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28084800/the-use-of-halophytic-plants-for-salt-phytoremediation-in-constructed-wetlands
#16
Abolfazl Farzi, Seyed Mehdi Borghei, Manouchehr Vossoughi
This research studied the use of constructed wetlands (CWs) to reduce water salinity. For this purpose, three halophytic species of the Chenopodiaceae family (Salicornia europaea, Salsola crassa, and Bienertia cycloptera) that are resistant to saline conditions were planted in the CWs, and experiments were conducted at three different salinity levels (EC∼2, 6, 10 dS/m). Electrical conductivity (EC) and concentrations of calcium (Ca), magnesium (Mg), sodium (Na), and chlorine (Cl) were measured before and after phytoremediation with a retention time of one week...
January 13, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28084797/phosphate-assisted-phytoremediation-of-arsenic-by-brassica-napus-and-brassica-juncea-morphological-and-physiological-response
#17
Nabeel Khan Niazi, Irshad Bibi, Ayesha Fatimah, Muhammad Shahid, Muhammad Tariq Javed, Hailong Wang, Yong Sik Ok, Safdar Bashir, Behzad Murtaza, Zulfiqar Ahmad Saqib, Muhammad Bilal Shakoor
In this study, we examined the potential role of phosphate (P; 0, 50, 100 mg kg(-1)) on growth, gas exchange attributes and photosynthetic pigments of Brassica napus and Brassica juncea under arsenic (As) stress (0, 25, 50, 75 mg kg(-1)) in a pot experiment. Results revealed that phosphate supplementation (P100) to As-stressed plants significantly increased shoot As concentration, dry biomass yield, and As uptake, in addition to the improved morphological and gas exchange attributes and photosynthetic pigments over P0...
January 13, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28084783/use-of-erythrina-fusca-as-a-bioindicator-of-cu-toxicity-ultrastructural-morphophysiological-and-nutritional-analyses
#18
Vânia L Souza, Alex-Alan F de Almeida, Pedro A O Mangabeira, Delmira da C Silva, Raildo M de Jesus, Raúl René Valle
Erythrina fusca is an important legume used for shade cover in cacao plantations in Brazil. Cacao plantations receive large quantities of copper (Cu) containing agrochemicals, mainly for control of diseases. Therefore, Cu toxicity was investigated in seedlings grown in hydroponics with increasing concentrations of Cu (0.005 - 32 mg L(-)¹) in a greenhouse. Ultrastructural analyses showed cell plasmolysis in the root cortical area and changes in thylakoid membranes at 8 mg Cu L(-1) and higher. There were changes in epicuticular wax deposition on the leaf surface at the 16 and 32 mg Cu L(-1) treatments...
January 13, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28084781/soil-trace-element-changes-during-a-phytoremediation-trial-with-willows-in-southern-qu%C3%A3-bec-canada
#19
François Courchesne, Marie-Claude Turmel, Benoît Cloutier-Hurteau, Gilbert Tremblay, Lara Munro, Jacynthe Masse, Michel Labrecque
This study determined the changes in TE (As, Cd, Cu, Ni, Pb, Zn) chemistry in the soils of a willow ('Fish Creek' - Salix purpurea, SV1 - S. x dasyclados and SX67 - S. miyabeana) plantation growing under a cold climate during a three-year trial. The soil HNO3-extractable and H2O-soluble TE concentrations and pools significantly decreased under most cultivars (Fish, SX67). Yet, TE changes showed inconsistent patterns and localized soil TE increases (Ni, Pb) were measured. Temporal changes in soil TE were also detected in control plots and sometimes exceeded changes in planted plots...
January 13, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/27996300/phytoextraction-of-soil-trace-elements-by-willow-during-a-phytoremediation-trial-in-southern-qu%C3%A3-bec-canada
#20
François Courchesne, Marie-Claude Turmel, Benoît Cloutier-Hurteau, Simon Constantineau, Lara Munro, Michel Labrecque
The phytoextraction of the trace elements (TE) As, Cd, Cu, Ni, Pb and Zn by willow cultivars (Fish Creek, SV1 and SX67) was measured during a three-year field trial in a mildly contaminated soil. Biomass ranged from 2.8 to 4.4 Mg/ha/yr at 30 000 plants/ha. Shoots (62%) were the main component followed by leaves (23%) and roots (15%). Biomass was positively linked to soluble soil dissolved organic carbon (DOC), K and Mg while TE, notably Cd and Zn, had a negative effect. The TE concentration ranking was: Zn > Cu > Cd > Ni, Pb > As and distribution patterns were: i) minima in shoots (As, Ni), ii) maxima in leaves (Cd, Zn) or iii) maxima in roots (Cu, Pb)...
December 20, 2016: International Journal of Phytoremediation
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