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International Journal of Phytoremediation

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https://www.readbyqxmd.com/read/29775107/heavy-metals-contamination-and-accumulation-in-submerged-macrophytes-in-an-urban-river-in-china
#1
Guangqiu Lu, Bei Wang, Cuiping Zhang, Shuying Li, Jiliang Wen, Guoli Lu, Chunrong Zhu, Yuanqing Zhou
Deteriorating urban water quality has attracted considerable attention in China. We investigated the contamination levels and distribution of heavy metals (As, Cd, Cu, Ni, Pb, and Zn) in Yuxi River water and sediments, and assessed the heavy metal accumulation capability of five species of submerged macrophytes: Vallisneria natans (Lour.) Hara, Potamogeton pectinatus L., Hydrilla verticillata (L. f.) Royle, Myriophyllum spicatum L., and Potamogeton crispus L. Samples were collected from upstream and downstream locations in different season...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775106/comparison-of-boron-uptake-and-translocation-in-two-vetiver-genotypes-and-evaluation-of-boron-removal-efficiency-of-vetiver-floating-islands
#2
Junliang Xin, Baifei Huang
The objectives of this study were to identify genotypic differences in the uptake and translocation of boron (B) in vetiver (Chrysopogon zizanioides L.), a promising species in B phytoremediation, and to determine the efficiency of vetiver floating island system in B phytoremediation. Changes in plant biomass and B uptake and translocation were determined in two vetiver genotypes, Sierra and Sunshine, cultured hydroponically in a nutrient solution and exposed to six different B concentrations for 7 d and 14 d...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775105/phytostabilization-of-polymetallic-contaminated-soil-using-medicago-sativa-l-in-combination-with-powdered-marble-sustainable-rehabilitation
#3
Laila Midhat, Naaila Ouazzani, Abdessamed Hejjaj, Javier Bayo, Laila Mandi
This study uses an ecotoxicology approach to evaluate the effectiveness of combining powdered marble as an amendment, with phytostabilization by Medicago sativa L. on the neutralization of acidic mine tailings, and the stabilization of heavy metals. The mine tailings were collected from an abandoned polymetallic mine in Southern Morocco, and mixed with powdered marble as the following proportions, 25%, 50%, and 75%. Laboratory immobilization/stabilization tests showed that the application of powdered marble in the treatments led to a significant increase in pH, and significant reductions of Cu, Zn (99%), Pb (98%), and Fe (45%)...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775104/the-ability-of-silybum-marianum-to-phytoremediate-cadmium-and-or-diesel-oil-from-the-soil
#4
Hossein Hammami, Ebrahim Alaie, Seyed Mohammad Mehdi Dastgheib
Phytoremediation is a new ecological and cost-effective technology applied for cleaning heavy metals and total petroleum hydrocarbon contaminated (TPH-contaminated) soils. This study was conducted to evaluate the potential of milk thistle (Silybum marianum) to phytoremediate cadmium (Cd (II)) from contaminated soils. To this end, the investigators applied a completely randomized design with the factorial arrangement and four replications. The results indicated that all the evaluated parameters of S. Marianum, including shoot and root fresh and dry weight, as well as shoot and root Cd, were significantly influenced by Cd (II) concentration and diesel oil (DO)...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775103/shoot-litter-breakdown-and-zinc-dynamics-of-an-aquatic-plant-schoenoplectus-californicus
#5
Silvana Arreghini, Laura de Cabo, Roberto José María Serafini, Alicia Fabrizio de Iorio
Decomposition of plant debris is an important process in determining the structure and function of aquatic ecosystems. The aims were to find a mathematic model fitting the decomposition process of Schoenoplectus californicus shoots containing different Zn concentrations; compare the decomposition rates; and assess metal accumulation/mobilization during decomposition. A litterbag technique was applied with shoots containing three levels of Zn: collected from an unpolluted river (RIV) and from experimental populations at low (LoZn) and high (HiZn) Zn supply...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775102/individual-and-combined-effects-of-cadmium-and-polycyclic-aromatic-hydrocarbons-on-the-phytoremediation-potential-of-xanthium-sibiricum-in-co-contaminated-soil
#6
Nasreen Jeelani, Wen Yang, Yajun Qiao, Jingjing Li, Shuqing An, Xin Leng
Soil contamination with heavy metals and organic pollutants continues to cause major ecological damage and human health problems. Phytoremediation offers a highly promising technology for the recovery of sites contaminated with mixed pollutants. In this study, we performed a greenhouse experiment to investigate the individual and combined effects of cadmium (Cd) and polycyclic aromatic hydrocarbon (PAH) contamination on the growth of Xanthium sibiricum, and also the ability of this species to accumulate and remove Cd and to reduce PAHs over a period of 75 days...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775101/phytoremediation-of-polycyclic-aromatic-hydrocarbons-pah-by-cv-crioula-a-brazilian-alfalfa-cultivar
#7
Wilber S Alves, Evelin A Manoel, Noemi S Santos, Rosane O Nunes, Giselli C Domiciano, Marcia R Soares
This work aimed to evaluate the phytoremediation capacity of the alfalfa cultivar Crioula in soils contaminated with polycyclic aromatic hydrocarbons (PAHs), primary pollutants with mutagenic and carcinogenic potential. Alfalfa was grown from seed for 40 days on soil amended with anthracene, pyrene, and phenanthrene. Soil and plant tissue was collected for biometric assay, dry mass analysis, and PAH analysis by liquid chromatography. Increased total PAH concentration was associated with decreases in plant biomass, height, and internode length...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775100/phytoremediation-of-btex-and-naphthalene-from-produced-water-spill-sites-using-poaceae
#8
Amanda Rose Shores, Brittany Hethcock, Melinda Laituri
Surface spills of water produced from hydraulic fracturing can expose soil and groundwater to organics such as BTEX and naphthalene (BTEX&N) as well as high concentrations of salt. As an alternative to soil excavation, we evaluated the effectiveness of BTEX&N soil remediation using 2 grasses present in Colorado. Perennial ryegrass and foxtail barley were grown separately in pots in the greenhouse and exposed to salt or a synthesized produced-water slurry containing relevant levels of salt and BTEX&N...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775099/the-use-of-olive-tree-pruning-waste-compost-to-sequestrate-methylene-blue-dye-from-aqueous-solution
#9
Ioannis Anastopoulos, Ilias Margiotoudis, Ioannis Massas
Considering that quality water supplies are diminishing and climate disorder affects water cycle, wastewaters should be decontaminated for reuse either by the same establishment or in agriculture for the growth of industrial plants. In that context, much research work has been focused on the development of low cost biosorbents. In this study, the effect of composting on the adsorption capacity of olive tree pruning waste (OTPW) biomass for methylene blue (MB) removal from aqueous solutions was examined. Composting procedure may improve the sorption properties of the raw organic materials, is economical and easy to apply...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775098/phytofiltration-of-anaerobically-digested-sugarcane-ethanol-stillage-using-a-macrophyte-with-high-potential-for-biofuel-production
#10
Gloria Sánchez-Galván, Yanet Bolaños-Santiago
Anaerobically digested stillage (ADS) requires treatment before being discharged into water bodies or soils to avoid adverse effects. Phytofiltration systems are eco-friendly technologies for wastewater treatment, and they simultaneously serve as a source of biomass for biofuel production. The aim of the present study was to investigate the phytofiltration of ADS using Azolla sp. The effects of the ADS strength (dilutions 1: 50 and 1 : 25 v/v) and initial biomass density (IBD) [15.44 (IBD1) and 23.16 (IBD2) g dry weight (dw) m-2 ] on plant growth and pollutant removal were assessed...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775097/phosphate-solubilizing-bacteria-improve-the-phytoremediation-efficiency-of-wedelia-trilobata-for-cu-contaminated-soil
#11
Maozi Lin, Meifang Jin, Kang Xu, Lingchao He, Dongliang Cheng
In a controlled experiment, we assessed the effect of phosphate-solubilizing bacterium (PSB) on the soil metal (Cu2+ ) phytoremediation by Wedelia trilobata and examined the effect of the interaction of Cu contamination and PSB on the growth of W. trilobata. We also explored the effect of the interaction of Cu contamination and PSB on the soil microflora. The results showed that the removal efficiency of Cu from soil by W. trilobata increased with an increase in the concentration of PSB, and the translocation factors of Cu (i...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775096/silicon-alleviates-arsenic-induced-toxicity-in-wheat-through-vacuolar-sequestration-and-ros-scavenging
#12
Md Monayem Hossain, Most Amena Khatun, Md Najmul Haque, Md Azizul Bari, Md Firoz Alam, Abul Mandal, Ahmad Humayan Kabir
Arsenic (As) is a phytotoxic element causing health hazards. This work investigates whether and how silicon (Si) alleviates As toxicity in wheat. The addition of Si under As-stress significantly improved morphophysiological characteristics, total protein, and membrane stability compared to As-stressed plants, suggesting that Si does have critical roles in As detoxification in wheat. Analysis of arsenate reductase activity and phytosiderophore (PS) release reveals their no involvement in the Si-mediated alleviation of As in wheat...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29775095/study-of-microbial-diversity-in-plant-microbe-interaction-system-with-oil-sludge-contamination
#13
Monika Dhote, Anil Kumar, Anjana Jajoo, Asha Juwarkar
A 90 days greenhouse experiment was conducted for evaluation of soil microbial diversity in different treatments of rhizospheric and nonrhizospheric oil sludge contaminated soil. Various pot treatments (T1-T5) were as follows: 2% oil sludge contaminated soil was considered as control (T1); augmentation of control with preadapted microbial consortium was T2; addition of Vetiver zizanioide to control was T3; bioaugmentation of control along with V. zizanioide was T4; and bioaugmentation with V. zizanioide and bulking agent was T5...
July 3, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29723055/cadmium-tolerance-and-phytoremediation-potential-of-acacia-acacia-nilotica-l-under-salinity-stress
#14
Rahat Shabir, Ghulam Abbas, Muhammad Saqib, Muhammad Shahid, Ghulam Mustafa Shah, Muhammad Akram, Nabeel Khan Niazi, Muhammad Asif Naeem, Munawar Hussain, Farah Ashraf
In this study, we explored the effect of salinity on cadmium (Cd) tolerance and phytoremediation potential of Acacia nilotica. Two-month-old uniform plants of A. nilotica were grown in pots contaminated with various levels of Cd (0, 5, 10, and 15 mg kg-1 ), NaCl (0%, 0.5%, 1.0% (hereafter referred as salinity), and all possible combinations of Cd + salinity for a period of six months. Results showed that shoot and root growth, biomass, tissue water content and chlorophyll (chl a, chl b, and total chl a+b) contents decreased more in response to salinity and combination of Cd + salinity compared to Cd alone...
June 7, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29723054/coupling-of-bioaugmentation-and-phytoremediation-to-improve-pcbs-removal-from-a-transformer-oil-contaminated-soil
#15
Maryam Salimizadeh, Mehran Shirvani, Hossein Shariatmadari, Mahnaz Nikaeen, Seyedeh Leili Mohebi Nozar
This study was carried out to assess the dissipation of 17 selected polychlorinated biphenyl (PCBi ) congeners in a transformer oil-contaminated soil using bioaugmentation with 2 PCB-degrading bacterial strains, i.e., Pseudomonas spp. S5 and Alcaligenes faecalis, assisted or not by the maize (Zea mays L.) plantation. After 5 and 10 weeks of treatment, the remaining concentrations of the target PCBi congeners in the soil were extracted and measured using GC-MS. Results showed that the bacterial augmentation treatments with Pseudomonas spp...
June 7, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29723053/grafting-of-watermelon-citrullus-lanatus-cv-mahbubi-onto-different-squash-rootstocks-as-a-means-to-minimize-cadmium-toxicity
#16
Siamak Shirani Bidabadi, Reza Abolghasemi, Si-Jun Zheng
To test the possibility that using appropriate rootstocks could improve the tolerance of watermelon to cadmium (Cd) toxicity, a greenhouse experiment was conducted to determine growth and antioxidant activities of watermelons, either nongrafted or grafted onto summer squash and winter squash. We provided nutrient solutions having four levels (0, 50, 100, and 200 μM) of cadmium to treat the plants. Shoot and root biomass reduction were significantly lower in summer squash rootstock-grafted watermelon than winter squash rootstock-grafted and nongrafted watermelons...
June 7, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29723052/successful-phytoremediation-of-crude-oil-contaminated-soil-at-an-oil-exploration-and-production-company-by-plants-bacterial-synergism
#17
Kaneez Fatima, Asma Imran, Imran Amin, Qaiser M Khan, Muhammad Afzal
Phytoremediation is a promising approach for the cleanup of soil contaminated with petroleum hydrocarbons. This study aimed to develop plant-bacterial synergism for the successful remediation of crude oil-contaminated soil. A consortia of three endophytic bacteria was augmented to two grasses, Leptochloa fusca and Brachiaria mutica, grown in oil-contaminated soil (46.8 g oil kg-1 soil) in the vicinity of an oil exploration and production company. Endophytes augmentation improved plant growth, crude oil degradation, and soil health...
June 7, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29723051/phytoremediation-removal-rates-of-benzene-toluene-and-chlorobenzene
#18
Matt A Limmer, Jordan Wilson, David Westenberg, Amy Lee, Mark Siegman, Joel G Burken
Phytoremediation is a sustainable remedial approach, although performance efficacy is rarely reported. In this study, we assessed a phytoremediation plot treating benzene, toluene, and chlorobenzene. A comparison of the calculated phytoremediation removal rate with estimates of onsite contaminant mass was used to forecast cleanup periods. The investigation demonstrated that substantial microbial degradation was occurring in the subsurface. Estimates of transpiration indicated that the trees planted were removing approximately 240,000 L of water per year...
June 7, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29723050/enhancement-of-toxic-cr-vi-fe-and-other-heavy-metals-phytoremediation-by-the-synergistic-combination-of-native-bacillus-cereus-strain-and-vetiveria-zizanioides-l
#19
A K Nayak, S S Panda, A Basu, N K Dhal
Bioremediation of Cr (VI), Fe, and other heavy metals (HMs) through plant-microbes interaction is one of the efficient strategies due to its high efficiency, low cost, and ecofriendly nature. The aim of the study was to isolate, characterize, and assess the potential of rhizospheric bacteria to enhance growth and metal accumulation by the chromium hyperaccumulator Vetiveria zizanoides. The bacterial strain isolated from mine tailings was identified to be Bacillus cereus (T1B3) strain exhibited plant growth-promoting traits including, 1-aminocyclopropane-1-carboxylate deaminase, indole acetic acid, and siderophores production, nitrogen fixation, and P solubilization...
June 7, 2018: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29723049/improving-the-growth-of-ni-hyperaccumulating-plants-in-serpentine-quarry-tailings
#20
Zahra Ghasemi, Seyed Majid Ghaderian, Carmela Monterroso, Petra S Kidd
Phytomining techniques based on metal-hyperaccumulating plants can be implemented in serpentine quarry wastes for Ni recovery. However, strategies must be developed to overcome the unfavourable plant growth conditions that these substrates present and to optimize Ni yields. In this study, the Ni hyperaccumulators Alyssum serpyllifolium, Alyssum inflatum, and Alyssum bracteatum were evaluated for their Ni phytoextraction efficiency from quarry tailings. Effects of two organic amendments, composted municipal sewage sludge and cow manure, on plant growth and physiological status and Ni removal were determined...
June 7, 2018: International Journal of Phytoremediation
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