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International Journal of Phytoremediation

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https://www.readbyqxmd.com/read/28621547/endophytic-bacteria-enhance-remediation-of-tannery-effluent-in-constructed-wetlands-vegetated-with-leptochloa-fusca
#1
Sobia Ashraf, Muhammad Afzal, Muhammad Naveed, Muhammad Shahid, Zahir Ahmad Zahir
The use of constructed wetlands (CWs) is a promising approach for the remediation of wastewater. The present study aims to develop a plant-bacterial system within CWs for efficient remediation of tannery effluent. In a vertical flow CW vegetated with Leptochloa fusca (Kallar grass), a consortium of three different endophytic bacteria, Pantoea stewartii ASI11, Microbacterium arborescens HU33, and Enterobacter sp. HU38, was used for bioaugmentation. Constructed wetlands vegetated with only L. fusca had the potential to remediate tannery effluent, but augmentation with endophytic bacteria enhanced the growth of L...
June 16, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28621546/application-of-a-novel-phyco-composite-biosorbent-for-biotreatment-of-aqueous-medium-polluted-with-manganese-ions
#2
Fatih Deniz, Elif Tezel Ersanli
A composite phyco-biomass including four different marine macroalgae species (Chaetomorpha sp., Polysiphonia sp., Ulva sp. and Cystoseira sp.) was evaluated as a novel biosorbent for the biosorption of manganese ions from aqueous solution. The experimental studies were performed to optimize the operational factors including solution pH, biosorbent amount, initial manganese concentration and reaction time in a batch mode biosorption system. The removal yield of the biosorbent for manganese ions increased with increasing pH, manganese ion concentration and reaction time while it decreased as the biosorbent dose increased...
June 16, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28613914/effect-of-rhizobacteria-on-arsenic-uptake-by-macrophyte-eichhornia-crassipes-mart-solms
#3
Parvinder Kaur, Simranjeet Singh, Vivek Kumar, Nasib Singh, Joginder Singh
Wastewater from municipal systems and industrial processes carries several trace metals including metalloid arsenic (As) which are considered serious environmental contaminants due to toxicity, and recalcitrant nature. In this study, we determined the phytoremediation of As by Eichhornia crassipes (Mart.) Solms either alone or in association with plant growth promoting rhizobacteria. Pseudomonas and Azotobacter inoculation to E. crassipes resulted in enhanced As removal compared to uninoculated control. Co-inoculation with a consortium of Pseudomonas, Azotobacter, Azospirillum, Actinomyces and Bacillus resulted in higher As (p<0...
June 14, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28613136/biosorption-of-basic-blue-7-by-fungal-cells-immobilized-on-the-green-type-biomatrix-of-phragmites-australis-spongy-tissue
#4
Tamer Akar, Cansu Uzun, Sema Çelik, Sibel Tunali Akar
Biosorption is an effective alternative method for the control of water pollution caused by different pollutants such as synthetic dyes and metals. A new and efficient biomass system was developed from the passively immobilized fungal cells. The spongy tissue of Phragmites australis was considered as the carrier for the immobilization of Neurospora sitophila cells employed for the biosorption of Basic Blue 7. This plant tissue was used for the first time as carrier for fungal cells. The biosorption was examined through batch and continuous mode of operations...
June 14, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28613080/wetland-based-phytoremediation-of-biosolids-from-an-end-of-life-municipal-lagoon-a-microcosm-study
#5
Inoka Amarakoon, Adenike O Hassan, Francis Zvomuya
This study examined the effectiveness of a wetland system for phytoremediation of biosolids from an end-of-life municipal lagoon. The microcosm experiment tested the effects of one vs. two harvests of cattail per growth cycle in biosolids without (PB) or with (PBS) the addition of soil on phytoremediation. Cattail (Typha latifolia)) seedlings were transplanted into pots containing 4.5 kg (dry wt.) of biosolids, above which a 10-cm deep water column was maintained. Results showed that two harvests per growth cycle significantly increased N and P phytoextraction relative to a single harvest...
June 14, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28613079/rhizoremediation-of-residual-sulfonylurea-herbicides-in-agricultural-soils-using-lens-culinaris-and-a-commercial-supplement
#6
B Rainbird, R H Bentham, K L Soole
Sulfonylureas are a popular herbicide used today for controlling weeds. While beneficial for this purpose they present a persistent problem in agricultural treated areas proving detrimental for successive crops. This study assessed the phytoremediative properties of lentils (Lens culinaris) grown in uncontaminated and Chlorsulfuron-contaminated soil, with and without the addition of a growth supplement, PulseAider™. The results show that in the presence of lentils the degradation of Chlorsulfuron is enhanced and this degradation rate is significantly increased when the PulseAider™ supplement was included during seed sowing...
June 14, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28613078/the-impact-of-textile-wastewater-irrigation-on-growth-and-development-of-apple-plant
#7
Hamdi Zenginbal, Gamze Dogdu Okcu, Arda Yalcuk
In this work, the effect of irrigation with textile wastewaters on the growth and development of 'Golden Delicious' apple sapling was examined over a one-year period. Municipal water prepared as a control sample (T0), 1/3 diluted (T1) and undiluted (T2) raw textile wastewater was used as the three different irrigation water samples. Two replications of each test were performed on three random samples each time. When examining the effects of T0, T1 and T2 irrigation water on plant growth, it was found that T1 irrigation water significantly increased the weight, the shoot length and the diameter of the sapling...
June 14, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28609121/alleviatory-effect-of-spent-pleurotus-eryngii-quel-substrate-on-replant-problem-of-rehmannia-glutinosa-libosch
#8
Bao Zhang, Xuanzhen Li, Liuji Zhang, Li Gu, Fajie Feng, Ming-Jie Li, Fengji Wang, Wenxiong Lin, Zhong-Yi Zhang
Rehmannia glutinosa Libosch. is a medicinal plant cultivated at a commercial scale in China. However, replanting problems result in a severe decline in both the biomass and quality of its roots which are of greatest medicinal value. This study attempted to remediate the replant soil using spent Pleurotus eryngii Quel substrate for alleviating this issue, and to investigate the underlying mechanisms. Results showed that R. glutinosa grew successfully in fresh soil and remedial replant soil, while no roots were harvested in the unremedied replant soil...
June 13, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28604070/effect-of-fluoride-on-photosynthetic-pigment-content-and-antioxidant-system-of-hydrilla-verticillata
#9
Jingqing Gao, Chun Liu, Jingshen Zhang, Songfeng Zhu, Yu Shen, Ruiqin Zhang
Fluoride can either inhibit or enhance the growth of aquatic macrophytes, depending upon fluoride concentration and exposure time. To investigate fluoride toxicity, the submerged plant Hydrilla verticillata was treated with various concentrations of fluoride (F) (0, 10, 20 and 40 mg/L) for different lengths of time (7, 14, 21 and 28 days). At exposure to 10 mg/L F, the content of chlorophyll, protein and carbohydrates content increased in leaves of H. verticillata and the activity of guaiacol peroxidase (POD) and superoxide dismutase (SOD) slightly increased in plants compared with the control...
June 12, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28604068/comparison-of-the-effects-of-poultry-manure-and-its-biochar-on-barley-growth-in-petroleum-contaminated-soils
#10
Maryam Barati, Fereshteh Bakhtiari, Dariush Mowla, Sedigheh Safarzadeh
This study was conducted to evaluate and compare the effectiveness of two organic amendments (poultry manure (PM) and poultry manure biochar (PMB)) for the degradation of petroleum hydrocarbons in contaminated soils by barley plant at three levels of total petroleum hydrocarbons (TPHs) during 5 month under greenhouse conditions. TPHs removal efficiency and microbial respiration were shown to be higher at soil cultivated plant than uncultivated soil and in lowest level of contamination rather than other levels of contamination and at organic amendment treatment than unamended soil...
June 12, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28598222/pfca-uptake-and-translocation-in-dominant-wheat-species-triticum-aestivum-l
#11
Hongxia Zhao, Yue Guan, Baocheng Qu
The comparative uptake of four perfluorinated carboxylic acids (PFCAs) by wheat (Triticum aestivum L.) grown in nutrient solution was investigated. Wheat is the main food crop in northern China and may become a potential pathway of human exposure to these PFCAs. The uptake of four PFCAs from water at a fixed concentration (1 μg/mL) increased over time, approaching a steady state, and except for the short-chain perfluorobutanoic acid (PFBA), most of the total mass of each of the PFCAs taken up by wheat was found to be at the root...
June 9, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28598217/influence-of-biochar-and-compost-on-phytoremediation-of-oil-contaminated-soil
#12
Lindsey Saum, Macario Bacilio Jiménez, David Crowley
The use of pyrolyzed carbon, biochar, as a soil amendment is of potential interest for improving phytoremediation of soil that has been contaminated by petroleum hydrocarbons. To examine this question, research reported here compared the effects of biochar, plants (mesquite tree seedlings), compost and combinations of these treatments on the rate of biodegradation of oil in a contaminated soil and the population size of oil degrading bacteria. The presence of mesquite plants significantly enhanced oil degradation in all treatments except when biochar was used as the sole amendment without compost...
June 9, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28598215/enhanced-atrazine-removal-by-hydrophyte-bacterium-associations-and-in-vitro-screening-of-the-isolates-for-their-plant-growth-promoting-potential
#13
Anina James, D K Singh, P J Khankhane
Emergent hydrophytes Acorus calamus, Typha latifolia and Phragmites karka and epiphytic root bacteria isolated from their rhizoplanes were exposed to atrazine (5 mg l(-1) and 10 mg l(-1)) individually and in plant‒bacterium combination for 15 days hydroponically. It was observed that A. calamus‒Pseudomonas sp. strain ACB combination was best in decontamination, showing 91% and 87% removal of 5 mg l(-1) and 10 mg l(-1) atrazine. Plant‒bacterium association led to significant increase in atrazine decontamination as compared to decontamination by either plant or bacterium alone indicating synergistic action of the hydrophytes and isolates which led to enhanced atrazine removal...
June 9, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28598213/characterization-and-degradation-potential-of-diesel-degrading-bacterial-strains-for-application-in-bioremediation
#14
María Balseiro-Romero, Panagiotis Gkorezis, Petra S Kidd, Jonathan Van Hamme, Nele Weyens, Carmen Monterroso, Jaco Vangronsveld
Bioremediation of polluted soils is a promising technique with low environmental impact, which uses soil organisms to degrade soil contaminants. In this study, 19 bacterial strains isolated from a diesel-contaminated soil were screened for diesel-degrading potential, biosurfactant production, and biofilm formation abilities, all desirable characteristics when selecting strains for re-inoculation into hydrocarbon-contaminated soils. Diesel degradation rates were determined in vitro in minimal medium with diesel as the sole carbon source...
June 9, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28598201/fate-of-heavy-metals-in-vertical-subsurface-flow-constructed-wetlands-treating-secondary-treated-petroleum-refinery-wastewater-in-kaduna-nigeria
#15
Hassana Ibrahim Mustapha, J J A van Bruggen, P N L Lens
This study examined the performance of pilot scale vertical subsurface flow constructed wetlands (VSF-CW) planted with three indigenous plants, i.e. Typha latifolia, Cyperus alternifolius and Cynodon dactylon, in removing heavy metals from secondary treated refinery wastewater under tropical conditions. The T. latifolia planted VSF-CW had the best heavy metal removal performance, followed by the C. alternifolius planted VSF CW and then the C. dactylon planted VSF-CW. The data indicated that Cu, Cr, Zn, Pb, Cd and Fe were accumulated in the plants at all the three VSF-CWs...
June 9, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28598199/phytoremediation-of-domestic-wastewater-using-a-hybrid-constructed-wetlands-in-mountainous-rural-area
#16
Saloua Elfanssi, Naaila Ouazzani, Lahbib Latrach, Abdessamed Hejjaj, Laila Mandi
The purpose of this study is to evaluate the efficiency of a hybrid constructed wetlands (HCW) in a rural mountainous area. The experiment was set up in small rural community named Tidili within the region of Marrakech-Morocco. The wastewater treatment plant was composed of three vertical flow constructed wetlands (VFCWs) working in parallel, followed by two parallel horizontal-subsurface flow constructed wetlands (HFCWs), with hydraulic loading rate of 0.5 m(3)/ m(2).d and 0.75 m(3)/m(2).d, respectively...
June 9, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28541720/assessment-of-hydrocarbon-degradation-potentials-in-plant-microbe-interaction-system-with-oil-sludge-contamination-a-sustainable-solution
#17
Monika Dhote, Anil Kumar, Anjana Jajoo, Asha Juwarkar
A pot culture experiment was conducted for 90 days for evaluation of oil and total petroleum hydrocarbon (TPH) degradation in vegetated and non-vegetated treatments of real field oil sludge contaminated soil. Five different treatments include, (T1) control, 2% oil sludge contaminated soil; (T2), augmentation of microbial consortium; (T3), Vertiver zizanioide; (T4), bio-augmentation along with Vertiver zizanioide and (T5), bio-augmentation with Vertiver zizanioide and bulking agent. During the study, oil reduction, TPH and degradation of its fractions was determined...
May 25, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28541715/biodegradation-and-kinetics-of-organic-compounds-and-heavy-metals-in-an-artificial-wetland-system-aws-by-using-water-hyacinths-as-a-biological-filter
#18
P F Rodríguez-Espinosa, J A Mendoza-Pérez, J Tabla-Hernandez, E Martínez-Tavera, M M Monroy-Mendieta
The objective of the present study was to investigate the ability of water hyacinth (Eichhornia crassipes) to absorb organic compounds (potassium hydrogen phthalate, sodium tartrate, malathion, 2,4-D and piroxicam). For the aforementioned purpose, an artificial wetland system (AWS) was constructed and filled with water hyacinth collected from Valsequillo Reservoir, Puebla, Mexico. Potassium hydrogen phthalate and sodium tartrate were measured in terms of Chemical Oxygen Demand (COD) and the Biological Oxygen Demand (BOD)...
May 25, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28532163/desodification-from-calcareous-saline-sodic-soil-through-phytoremediation-with-phragmites-australis-cav-trin-ex-steud-and-gypsum
#19
Saeed Akhter Abro, Aijaz Ali Otho, Farooque A Bughio, Oan Mohammad Sahito, Abdul Rauf Jamali, Amanullah Mahar
The reclamation of saline sodic soils requires sodium removal and the phytoremediation is one of the proven low-cost, low-risk technologies for reclaiming such soils. However, the role of P. australis in reclaiming saline sodic soil has not been evaluated extensively. The comparative reclaiming role of P. australis and gypsum was evaluated in a column experiment on a sandy clay saline sodic soil with ECe 74.7 dS m(-1), SAR 63.2, Na(+) 361 g kg(-1) and pH 8.46. The gypsum at 100% soil requirement, planting common reed (P...
May 22, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28532161/modelling-of-phytoextraction-efficiency-of-microbially-stimulated-salix-dasyclados-l-in-the-soils-with-different-speciation-of-heavy-metals
#20
Michał Złoch, Tomasz Kowalkowski, Jarosław Tyburski, Katarzyna Hrynkiewicz
Bioaugmentation of soils with selected microorganisms during phytoextraction can be the key solution, but the actual efficacy of this technology should be confirmed for different physicochemical soil parameters and heavy metal availability to guarantee the universality of this method. Equally important is development of the accurate prediction tool to manage phytoremediation process.The main objective of this study was to evaluate the role of three metalotolerant siderophore-producing Streptomyces sp. B1-B3 strains in the phytoremediation of heavy metals with the use of S...
May 22, 2017: International Journal of Phytoremediation
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