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International Journal of Phytoremediation

Onur Can TÜrker, Talat Baran
The met boron (B) and its compounds widely exist in environments, and boron can poses hazardous effects on plants, animals, and human beings when it is found in high concentrations in water environments. It is difficult and costly to remove B with conventional treatment methods from drinking water. Therefore, alternative and cost effective treatment techniques are imperative. In this study, a novel and environmental friendly method based on chitosan and duckweed (Lemna gibba L.) combination was evaluated for boron removal from drinking water...
July 10, 2017: International Journal of Phytoremediation
Syeda Huma Bokhari, Muhammad Mahmood-Ul-Hassan, Yousaf Riaz, Anjum Munir, Zeshan Ali
Baseline water quality of municipal effluent of three rural settings of Islamabad was assessed for physicochemical and microbiological parameters by collecting wastewater from inlet and center of ponds. Results showed that water quality was comparatively better at the centre as Typha latifolia plants were growing towards the center of ponds. In another study, wastewater treatment ability of T. latifolia was investigated by growing in industrial and municipal effluent under greenhouse conditions. Water and plant samples were collected periodically (3(rd), 10(th), 17(th), 24(th) and 31(st) day after transplanting) for measurement of Pb, Cu and Cd concentrations...
July 5, 2017: International Journal of Phytoremediation
Firdaus-E- Bareen, Sarwat Saeed, Humera Afrasiab
Tannery waste is a major environmental concern needing proper management. Tannery solid waste (TSW) can be added to the soil as an organic amendment but needs metal removal. Chelant assisted phytoremediation hastens the process of metal removal but also poses risk of leaching. This research evaluates EDTA assisted phytoextraction and associated leaching hazard using metal tolerant plants. Greenhouse trials were carried out with sunflower, spinach and marigold using columns of uniform diameter packed with field soil and multi-metal contamination of TSW (5% and 10%) with four EDTA doses...
July 5, 2017: International Journal of Phytoremediation
Sen Lin, Tingting Yang, Shaowei Zhu, Jifeng Wang, Wuzhong Ni
A method for screening copper (Cu) tolerant rice cultivars was studied by combining hydroponic experiments and cluster analysis, and the classification of cultivars in Cu stress tolerance was done. In the first hydroponic experiment, seedlings of Jiahe991 and Xiushui114 were planted in nutrient solution with different Cu(2+) concentrations from 10 to 1800 μg/L. Results indicated that the toxic threshold of Cu concentration in solution ranged from 900 to 1200 μg/L, since SPAD values of leaves and seedlings biomass of the treatments with ≥ 900 and/or 1200 µg/L were significantly lower than the control...
July 5, 2017: International Journal of Phytoremediation
Sadikshya R Dangi, Gary Bañuelos, Jeffrey S Buyer, Bradley Hanson, James Gerik
Poplar trees (Populus spp.) are often used in bioremediation strategies because of their ability to phytoextract potential toxic ions, e.g., selenium (Se) from poor quality soils. Soil microorganisms may play a vital role in sustaining health of soil and/or tolerance of these trees grown in poor quality soils by contributing to nutrient cycling, soil structure, overall soil quality and plant survival. The effect of naturally-occurring salts, boron (B) and Se on soil microbial community composition associated with poplar trees is not known for bioremediation strategies...
July 5, 2017: International Journal of Phytoremediation
Muhammad Afzal Chhajro, Qingling Fu, Muhammad Shaaban, Muhammad Shahid Rizwan, Jun Zhu, Abdus Salam, Kashif Ali Kubar, Saqib Bashir, Hongqing Hu, Ghulam Murtaza Jamro
Synthetic chelators play an important role in boosting the microbial biomass carbon (MBC), dissolved organic carbon (DOC) and heavy metal solubility in a contaminated soil towards a sustainability of environment for agricultural crops. Castor was selected as a potential cadmium (Cd) accumulator in different levels of Cd (-Cd and +Cd) contamination with using three chelating agents, ethylenediamine tetraacetic acid (H4EDTA), nitriloacetic acid (H3 NTA) and NH4 citrate (ammonium citrate) were added to soil at rates of 10, 15 and 25 mmol in 5 kg of soil per pot...
June 23, 2017: International Journal of Phytoremediation
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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