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Academic literature on the topic 'Phytoremediation enhanced by microorganism'

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Published: 11 March 2023

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Journal articles on the topic "Phytoremediation enhanced by microorganism"

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Ptaszek, Natalia, Magdalena Pacwa-Płociniczak, Magdalena Noszczyńska, and Tomasz Płociniczak. "Comparative Study on Multiway Enhanced Bio- and Phytoremediation of Aged Petroleum-Contaminated Soil." Agronomy 10, no. 7 (July 1, 2020): 947. http://dx.doi.org/10.3390/agronomy10070947.

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Bioremediation and phytoremediation of soil polluted with petroleum hydrocarbons (PHs) are an effective and eco-friendly alternative to physicochemical methods of soil decontamination. These techniques can be supported by the addition of effective strains and/or surface-active compounds. However, to obtain maximum efficacy of bioremediation, the interactions that occur between the microorganisms, enhancement factors and plants need to be studied. Our study aimed to investigate the removal of petroleum hydrocarbons from an aged and highly polluted soil (hydrocarbon content about 2.5%) using multiway enhanced bio- and phytoremediation. For this purpose, 10 enhanced experimental groups were compared to two untreated controls. Among the enhanced experimental groups, the bio- and phytoremediation processes were supported by the endophytic strain Rhodococcus erythropolis CDEL254. This bacterial strain has several plant growth-promoting traits and can degrade petroleum hydrocarbons and produce biosurfactants. Additionally, a rhamnolipid solution produced by Pseudomonas aeruginosa was used to support the total petroleum hydrocarbon loss from soil. After 112 days of incubation, the highest PH removal (31.1%) was observed in soil planted with ryegrass (Lolium perenne L. cv. Pearlgreen) treated with living cells of the CDEL254 strain and rhamnolipid solution. For non-planted experimental groups, the highest PH loss (26.1%) was detected for soil treated with heat-inactivated CDEL254 cells and a rhamnolipid solution. In general, the differences in the efficacy of the 10 experimental groups supported by plants, live/dead cells of the strain tested and rhamnolipid were not statistically significant. However, each of these groups was significantly more effective than the appropriate control groups. The PH loss in untreated (natural attenuation) and soils that underwent phytoremediation reached a value of 14.2% and 17.4%, respectively. Even though the CDEL254 strain colonized plant tissues and showed high survival in soil, its introduction did not significantly increase PH loss compared to systems treated with dead biomass. These results indicate that the development of effective biological techniques requires a customized approach to the polluted site and effective optimization of the methods used.
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ANDARISTA UTOMO, ADZALIA, and SARWOKO MANGKOEDIHARDJO. "Preliminary Assessment of Mixed Plants for Phytoremediation of Chromium Contaminated Soil." Current World Environment 13, Special issue 1 (November 25, 2018): 22–24. http://dx.doi.org/10.12944/cwe.13.special-issue1.04.

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This study determined the ability of mixed plants of Helianthus annus, Zinnia elegans, and Impatiens balsamine to remove chromium (Cr) from soil. This research used respirometer to measure the respiration rate of microorganisms in soil media and Atomic Absorption Spectophotometry to measure Cr content on soil and plants. The results of the study showed that the plants were able to remove Cr from the soil as much as 74%. However, the removal enhanced by microbial activity on the rootzone.
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Liu, Zhongchuang, Li-ao Wang, Shimin Ding, and Hongyan Xiao. "Enhancer assisted-phytoremediation of mercury-contaminated soils by Oxalis corniculata L., and rhizosphere microorganism distribution of Oxalis corniculata L." Ecotoxicology and Environmental Safety 160 (September 2018): 171–77. http://dx.doi.org/10.1016/j.ecoenv.2018.05.041.

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Zhang, Jing, Rui Yin, Xiangui Lin, Weiwei Liu, Ruirui Chen, and Xuanzhen Li. "Interactive Effect of Biosurfactant and Microorganism to Enhance Phytoremediation for Removal of Aged Polycyclic Aromatic Hydrocarbons from Contaminated Soils." JOURNAL OF HEALTH SCIENCE 56, no. 3 (2010): 257–66. http://dx.doi.org/10.1248/jhs.56.257.

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Dhawi, Faten. "The Role of Plant Growth-Promoting Microorganisms (PGPMs) and Their Feasibility in Hydroponics and Vertical Farming." Metabolites 13, no. 2 (February 9, 2023): 247. http://dx.doi.org/10.3390/metabo13020247.

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There are many reasons for the increase in hydroponics/soil-free systems in agriculture, and these systems have now advanced to the form of vertical farming. The sustainable use of space, the reduction in water use compared to soil-based agriculture, the lack of pesticides, the ability to control nutrient inputs, and the implementation of user-friendly technology for environmental control and harvesting are all factors that have made the global market for vertical farming predicted to reach more than USD 10.02 billion by 2027. By comparison, soil-based agriculture consumes 20 times more water, and some agricultural practices promote soil deterioration and cause environmental pollution. Plant growth-promoting microorganisms (PGPMs) have been used extensively in traditional agriculture to enhance plant growth, environmental stress tolerance, and the efficacy of phytoremediation in soil-based farming. Due to the controlled atmosphere in hydroponics and vertical farms, there is strong potential to maximize the use of PGPMs. Here, we review the leveraging of plant growth-promoting microorganism mechanisms in hydroponics and vertical farming. We recommend a synchronized PGPM treatment using a biostimulant extract added to the hydroponic medium while also pre-treating seeds or seedlings with a microbial suspension for aquaponic and aeroponic systems.
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Zhao, Chong, Guosen Zhang, and Jinhui Jiang. "Enhanced Phytoremediation of Bisphenol A in Polluted Lake Water by Seedlings of Ceratophyllum demersum and Myriophyllum spicatum from In Vitro Culture." International Journal of Environmental Research and Public Health 18, no. 2 (January 19, 2021): 810. http://dx.doi.org/10.3390/ijerph18020810.

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Bisphenol A (BPA) is a typical endocrine disruptor that causes problems in waters all around the world. In this study, the effects of submerged macrophytes (Ceratophyllum demersum and Myriophyllum spicatum) cultured in vitro on the removal of BPA at two initial concentrations (0.5 mg L−1 vs. 5.0 mg L−1) from Donghu lake water were investigated, using different biomass densities (2 g L−1 vs. 10 g L−1) under different nutrient conditions (1.85 mg L−1 and 0.039 mg L−1 vs. 8.04 mg L−1 and 0.175 mg L−1 of the total nitrogen and phosphorus concentration, respectively), together with the effect of indigenous microorganisms in the water. The results showed that indigenous microorganisms had limited capacity for BPA removal, especially at higher BPA initial concentration when its removal rate amounted to about 12% in 12 days. Addition with plant seedlings (5 cm in length) greatly enhanced the BPA removal, which reached 100% and over 50% at low and high BPA initial concentration in 3 days, respectively. Higher biomass density greatly favored the process, resulting in 100% of BPA removal at high BPA initial concentration in 3 days. However, increases in nutrient availability had little effect on the BPA removal by plants. BPA at 10.0 mg L−1 significantly inhibited the growth of M. spicatum. Therefore, C. demersum may be a candidate for phytoremediation due to greater efficiency for BPA removal and tolerance to BPA pollution. Overall, seedlings of submerged macrophytes from in vitro culture showed great potential for use in phytoremediation of BPA in natural waters, especially C. demersum.
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Jin, Zhong Min, Wei Sha, Yan Fu Zhang, Jing Zhao, and Hongyang Ji. "Isolation of Burkholderia cepacia JB12 from lead- and cadmium-contaminated soil and its potential in promoting phytoremediation with tall fescue and red clover." Canadian Journal of Microbiology 59, no. 7 (July 2013): 449–55. http://dx.doi.org/10.1139/cjm-2012-0650.

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Phytoremediation combined with suitable microorganisms and biodegradable chelating agents can be a means of reclaiming lands contaminated by toxic heavy metals. We investigated the ability of a lead- and cadmium-resistant bacterial strain (JB12) and the biodegradable chelator ethylenediamine-N,N′-disuccinic acid (EDDS) to improve absorption of these metals from soil by tall fescue and red clover. Strain JB12 was isolated from contaminated soil samples, analysed for lead and cadmium resistance, and identified as Burkholderia cepacia. Tall fescue and red clover were grown in pots to which we added JB12, (S,S)-EDDS, combined JB12 and EDDS, or water only. Compared with untreated plants, the biomass of plants treated with JB12 was significantly increased. Concentrations of lead and cadmium in JB12-treated plants increased significantly, with few exceptions. Plants treated with EDDS responded variably, but in those treated with combined EDDS and JB12, heavy metal concentrations increased significantly in tall fescue and in the aboveground parts of red clover. We conclude that JB12 is resistant to lead and cadmium. Its application to the soil improved the net uptake of these heavy metals by experimental plants. The potential for viable phytoremediation of lead- and cadmium-polluted soils with tall fescue and red clover combined with JB12 was further enhanced by the addition of EDDS.
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Irawati, Wahyu, Adolf Jan Nexson Parhusip, Nida Sopiah, and Juniche Anggelique Tnunay. "The Role of Heavy Metals-Resistant Bacteria Acinetobacter sp. in Copper Phytoremediation using Eichhornia crasippes [(Mart.) Solms]." KnE Life Sciences 3, no. 5 (September 11, 2017): 208. http://dx.doi.org/10.18502/kls.v3i5.995.

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<p>Phytoremediation is a bioremediation process using plants and microorganisms to extract, sequester, or detoxify heavy metals. <em>Eichhornia crassipes </em>[(Mart.) Solms] is a well-known phytoremediating plant that has the ability to remove heavy metals from water by accumulating them in their tissues. <em>Acinetobacter </em>sp. IrC1 and <em>Acinetobacter </em>sp. IrC2 are copper resistant bacteria isolated from industrial waste in Rungkut, Surabaya. The aim of this research was to study the effect of <em>Acinetobacter </em>sp. IrC1 and <em>Acinetobacter </em>sp. IrC2 inoculation in copper phytoremediation process using <em>Eichhornia crassipes</em>. Bacterial isolate with colony form unit of 10<sup>8 </sup>was inoculated into the rhizosphere of <em>Eichhornia crassipes </em>in water containing 10 mL · L<sup>–1 </sup>and 20 mL · L<sup>–1</sup> copper. Copper removal in contaminated water and copper accumulation in the plant roots was analyzed using atomic absorption spectrophotometer. The results showed that inoculation treatment enhanced the potency of the plant to reduce copper from 94 % concentration level in the medium without bacterial inoculation to 98.3 % and 97 % in medium inoculated with <em>Acinetobacter </em>sp. IrC1 and <em>Acinetobacter </em>sp. IrC2, respectively. <em>Eichhornia crassipes </em>inoculated with <em>Acinetobacter </em>sp. IrC1 accumulated up to six fold higher copper concentrations in roots compared with un-inoculated controls. The roots of <em>Eichhornia crassipes</em> accumulated 596 mg · kg<sup>–1</sup>and 391 mg · kg<sup>–1</sup> in medium containing 5 mL · L<sup>–1</sup> and 10 mL · L<sup>–1</sup> copper without inoculation, while, the upper part of the plants accumulated up to 353 2.5 mg · kg<sup>–1</sup> and 194 1.5 mg · kg<sup>–1</sup> in medium inoculated with <em>Acinetobacter</em> sp. IrC1, respectively. The findings of the study indicated that <em>Acinetobacter </em>sp. IrC1 and <em>Acinetobacter </em>sp. IrC2 can improve the phytoremediation potential of <em>Eichhornia crassipes</em>.</p>
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Borowik, Agata, Jadwiga Wyszkowska, and Jan Kucharski. "Microbiological Study in Petrol-Spiked Soil." Molecules 26, no. 9 (May 1, 2021): 2664. http://dx.doi.org/10.3390/molecules26092664.

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The pollution of arable lands and water with petroleum-derived products is still a valid problem, mainly due the extensive works aimed to improve their production technology to reduce fuel consumption and protect engines. An example of the upgraded fuels is the BP 98 unleaded petrol with Active technology. A pot experiment was carried out in which Eutric Cambisol soil was polluted with petrol to determine its effect on the microbiological and biochemical properties of this soil. Analyses were carried out to determine soil microbiome composition—with the incubation and metagenomic methods, the activity of seven enzymes, and cocksfoot effect on hydrocarbon degradation. The following indices were determined: colony development index (CD); ecophysiological diversity index (EP); index of cocksfoot effect on soil microorganisms and enzymes (IFG); index of petrol effect on soil microorganisms and enzymes (IFP); index of the resistance of microorganisms, enzymes, and cocksfoot to soil pollution with petrol (RS); Shannon–Weaver’s index of bacterial taxa diversity (H); and Shannon–Weaver’s index of hydrocarbon degradation (IDH). The soil pollution with petrol was found to increase population numbers of bacteria and fungi, and Protebacteria phylum abundance as well as to decrease the abundance of Actinobacteria and Acidobacteria phyla. The cultivation of cocksfoot on the petrol-polluted soil had an especially beneficial effect mainly on the bacteria belonging to the Ramlibacter, Pseudoxanthomonas, Mycoplana, and Sphingobium genera. The least susceptible to the soil pollution with petrol and cocksfoot cultivation were the bacteria of the following genera: Kaistobacter, Rhodoplanes, Bacillus, Streptomyces, Paenibacillus, Phenylobacterium, and Terracoccus. Cocksfoot proved effective in the phytoremediation of petrol-polluted soil, as it accelerated hydrocarbon degradation and increased the genetic diversity of bacteria. It additionally enhanced the activities of soil enzymes.
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Pino, Nancy J., Luisa M. Muñera, and Gustavo A. Peñuela. "Bioaugmentation with Immobilized Microorganisms to Enhance Phytoremediation of PCB-Contaminated Soil." Soil and Sediment Contamination: An International Journal 25, no. 4 (April 27, 2016): 419–30. http://dx.doi.org/10.1080/15320383.2016.1148010.

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Dissertations / Theses on the topic "Phytoremediation enhanced by microorganism"

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Ankumah, Ramble O. "Enhanced degradation in soil of the herbicide EPTC and determination of its degradative pathway by an isolated soil microorganism /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu148759630735724.

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Oliveira, Tânia Filipa Mota. "Cooper phytoremediation by a salt marsh plant: microorganisms' contribution to enhance it." Master's thesis, 2014. https://repositorio-aberto.up.pt/handle/10216/77636.

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Oliveira, Tânia Filipa Mota. "Cooper phytoremediation by a salt marsh plant: microorganisms' contribution to enhance it." Dissertação, 2014. https://repositorio-aberto.up.pt/handle/10216/77636.

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Heaton, Andrew Charles Peter. "Enhanced mercury processing by plants genetically engineered for mercury phytoremediation." 2002. http://purl.galileo.usg.edu/uga%5Fetd/heaton%5Fandrew%5Fc%5F200212%5Fphd.

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Thesis (Ph. D.)--University of Georgia, 2002.
Directed by Bruce Lee Haines. Includes an article published in Journal of soil contamination, and articles submitted to Plant physiology, and Environmental toxicology and chemistry. Includes bibliographical references.
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Wang, Haitang Jay. "Plant Growth-Promoting Rhizobacteria (PGPR) Enhanced Phytoremediation of DDT Contaminated Soil." Thesis, 2008. http://hdl.handle.net/10012/3721.

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Although the pesticide DDT has been banned from use in Canada for more than three decades, DDT still persists in Canadian farmlands at detectable levels. Much effort, such as incineration, thermal desorption, and bioremediation, has been used to remediate DDT contaminated soils, but so far it is either too expensive or impractically slow. In this study, a three-year period of field trials was performed to investigate phytoremediation of DDT contaminated soil. In the field trials, millet, fall rye, sugar beet, potato, and pumpkin, treated with plant growth-promoting rhizobacteria (PGPR) were planted on two sites. As well, untreated plants were planted as a control. Plant growth, and 4,4’-DDT plus 4,4’-DDE concentrations in plant tissues and soil were monitored regularly. Comparing the plant growth between PGPR treated and untreated, PGPR significantly promoted the plant growth. On site 1, the root length and root weight of fall rye treated with PGPR were 16% and 44% greater, respectively, compared to the untreated plants. The root and shoot dry weights of millet treated with PGPR were 38% and 47% greater than those untreated plants. Root dry weight of sugar beet treated with PGPR was increased by 74% compared to untreated sugar beet. A significant effect of growth promotion was also observed in pumpkin and potato treated with PGPR. Following plant growth, DDT detection in plants was performed. 4,4’-DDT and 4,4’-DDE were found in plant tissues of fall rye, millet, sugar beet, and pumpkin. The concentrations of 4,4’-DDT and 4,4’-DDE in fall rye roots were 0.61 and 0.59 μg/g, respectively. In pumpkin tissues at harvest, 4,4’-DDT and 4,4’-DDE concentrations were 0.67 and 1.64 μg/g in roots, 1.06 and 2.05 μg/g in the lower stems, and 0.2 and 0.32 μg/g in the upper stems. The data indicated that it is feasible to phytoremediate DDT from contaminated soil. In addition, 4,4’-DDT concentrations in soils with different plant species were determined. In millet plot on site 1, 4,4’-DDT concentration in rhizosphere soil dropped by 41% in 2006 compared to 4,4’-DDT concentration at t0. In sugar beet plot on site 1, 28% of 4,4’-DDT dropped in rhizosphere soil in 2007. In pumpkin plot on site 1, 4,4’-DDT in rhizosphere soil was decreased by 22% in 2007. The results show that 4,4’-DDT concentration in rhizosphere soil was significantly lower than the initial level of DDT. Based on the data of 4,4’-DDT in soils and plant tissues, a mass balance was constructed and calculated. The preliminary mass balance shows that the total amount that DDT decreased in rhizopshere soil approximately equals to the total amount of DDT accumulated in plant tissues. This indicates that phytoextraction is the mechanism of DDT phytoremediation. In addition, PGPR promoted plant growth and then enhanced the phytoremediation efficiency of DDT. Therefore, the research indicates that PGPR assisted phytoremediation has a great potential for remediation of DDT and other chlorinated aromatics from impacted soil.
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Wu, Shan Shan. "Enhanced Phytoremediation of Salt-Impacted Soils Using Plant Growth-Promoting Rhizobacteria (PGPR)." Thesis, 2009. http://hdl.handle.net/10012/4392.

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Soil salinity is a widespread problem that limits crop yield throughout the world. The accumulation of soluble salts in the soil can inhibit plant growth by increasing the osmotic potential of interstitial water, inducing ion toxicity and nutrient imbalances in plants. Over the last decade, considerable effort has been put into developing economical and effective methods to reclaim these damaged soils. Phytoremediation is a technique that uses plants to extract, contain, immobilize and degrade contaminants in soil. The most common process for salt bioremediation is phytoextraction which uses plants to accumulate salt in the shoots, which is then removed by harvesting the foliage. As developing significant plant biomass in saline soils is an issue, a group of free-living rhizobacteria, called plant growth promoting rhizobacteria (PGPR), can be applied to plant seeds to aid plant growth by alleviating salt stress. The principle objective of this research was to test the efficacy of PGPR in improving the growth of plants on salt-impacted soils through greenhouse and field studies. In this research, previously isolated PGPR strains of Pseudomonas putida. UW3, Pseudomonas putida UW4, and Pseudomonas corrugata CMH3 were applied to barley (Hordeum valgare C.V. AC ranger), oats (Avena sativa C.V. CDC baler), tall wheatgrass (Agropyron elongatum), and tall fescue (festuca arundinacea C.V. Inferno). PGPR effects on plant growth, membrane stability, and photosynthetic activity under salt stress were examined. Greenhouse studies showed that plants treated with PGPR resulted in an increase in plant biomass by up to 500% in salt-impacted soils. Electrolyte leakage assay showed that plants treated with PGPR resulted in 50% less electrolyte leakage from membranes. Several chlorophyll a fluorescence parameters, Fv/Fm, effective quantum yield, Fs, qP, and qN obtained from pulse amplitude modulation (PAM) fluorometry showed that PGPR-treated plants resulted in improvement in photosynthesis under salt stress. Field studies showed that PGPR promoted shoot dry biomass production by 27% to 230%. The NaCl accumulation in plant shoots increased by 7% to 98% with PGPR treatment. The averaged soil salinity level at the CMS and CMN site decreased by 20% and 60%, respectively, during the 2008 field season. However, there was no evidence of a decrease in soil salinity at the AL site. Based on the improvements of plant biomass production and NaCl uptake by PGPR observed in the 2008 field studies, the phytoremediation efficiency on salt-impacted sites is expected to increase by 30-60% with PGPR treatments. Based on the average data of 2007 and 2008 field season, the time required to remove 25% of NaCl of the top 50 cm soil at the CMS, CMN and AL site is estimated to be six, twelve, and sixteen years, respectively, with PGPR treatments. The remediation efficiency is expected to accelerate during the remediation process as the soil properties and soil salinity levels improve over time.
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Lai, Hung-Yu, and 賴鴻裕. "Phytoremediation of Soils Contaminated with Cadmium, Zinc, and Lead Enhanced by EDTA." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/86495106002009877013.

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博士
國立臺灣大學
農業化學研究所
92
Heavy metals-contaminated soils can be remediated by phytoremediation techniques. Phytoextraction accumulated toxic metals from contaminated soil into the aboveground tissue of higher plants, which were then harvested and incinerated. Some synthetic chelating agents were applied to metal-contaminated soil to increase the mobility and bioavailability of the metal in the contaminated soils and also to increase the amount of heavy metals accumulated in the upper parts of plants. Rainbow pink (Dianthus Chinensis), Vetiver grass (Vetiver zizanioides), and Indian mustard (Brassica juncea) were used in this study to test the remediation of the Cd, Zn, and Pb-contaminated soil. The objectives of this study are to assess the effect of applying EDTA on the phytoremediation of metals-contaminated soils and to assess the interactions among three metals in multiple metals-contaminated soils. Different applying methods with same amounts of EDTA are also used in this study to assess their effect on the metal concentration in the shoot of plant and on reducing the potential risk of groundwater contamination. Rainbow pink accumulated about 80 mg Cd/kg, 3700 mg Zn/kg, and 220 mg Pb/kg when it was grown in the Cd, Zn, and Pb-contaminated soil for 50 days. This plant can be used for phytoextraction of multiple metals-contaminated soils. Vetiver grass can grow well in the same concentrations of heavy metals-contaminated soil, and the growth was not affected by the toxicity of heavy metals. The concentrations of Cd and Zn in the shoots of vetiver grass were 40.7±8.28 and 1,399±132 mg/kg, respectively, and no Pb was detected. Because of the toxicity and high concentrations of multiple metals occurred in the soils, some damages were found in the growth stage of Indian mustard. The concentrations of Cd, Zn, and Pb in soil solution were significantly increased after applying 5 or 10 mmol EDTA/kg (p< 0.05). The concentrations of Cd and Pb in shoot of rainbow pink were also significantly increased after EDTA treatments (p< 0.05), but it was not significantly increased for Zn. For biological uptake of metals in contaminated soil, the EDTA treatments only significantly increased the total uptake of Pb in the shoot of rainbow pink compared with the control treatment (p< 0.001), but it was not significantly increased for Cd and Zn uptake by rainbow pink. This indicated that the EDTA treatments could be evaluated as more efficient amendment method to remove the Pb from the contaminated soil. The results indicated that the concentrations of Cd, Zn, and Pb in the soil solution of vetiver grass were also significantly increased after applying EDTA treatments (p< 0.05), especially for applying 10 mmol EDTA/kg. Even the concentrations of the three metals in soil solution changed drastically, but the concentrations of Cd and Zn in the shoot of vetiver grass only varied from 20 to 30 mg Cd/kg and from 390 to 520 mg Zn/kg, respectively. The growth of vetiver grass was not affected by the toxicity of seriously contaminated metals. The applying of different concentrations of EDTA solution only slightly decreased the biomass of vetiver grass and slightly decreased the total removal of heavy metals from the contaminated soils. Applying 2 or 5 mmol EDTA/kg significantly increased the Cd, Zn, Pb, Fe, and Mn concentration in the soil solution of single- or multiple metals-contaminated soils (p< 0.05), but it had no significantly change on the concentration of Ca and Mg. Deionized water extractable metal concentrations are also significantly increased after applying EDTA (p< 0.05). Because of the strong extraction capacity of both 0.005M DTPA (pH 5.3) and 0.05M EDTA (pH 7.0), there was no significant increase on the metal concentration of two extractions methods after applying EDTA. There was no effect of single or multiple-dose application of 4 mmol EDTA/kg on biomass and total removal of heavy metals in shoots of rainbow pink. But the multiple-dose applying EDTA decreased the Cd, Zn, and Pb concentration in soil solution or extracted solution with deionized water, and thus reduced the risk of groundwater contamination. There were some interactions among Cd, Zn, and Pb in the multiple metals- contaminated soils. The result of metals concentration and total removal in the shoots of rainbow pink showed that, without applying EDTA, adding Zn or Pb had enhancement effect on the uptake of Cd in the shoot of rainbow pink. The addition of Cd had inhibition effect on the uptake of Zn by rainbow pink. After applying EDTA, some interactions were found, and the addition of two concentrations of EDTA had greatest effect on the uptake of Pb by rainbow pink compared with the other elements. In this study, planting rainbow pink in the Cd, Zn, and Pb-contaminated soil for 50 days without adding EDTA was the most economic and efficient method to remove Cd and Zn from contaminated soil compared with other treatments. The rainbow pink can accumulate high concentration of Cd and Zn in the shoots and remove the maximum amounts of these two elements (0.26 mg Cd/plant and 11.7 mg Zn/plant), and also had less risk on the pollution of the groundwater when comparing with other treatments. The addition of EDTA significantly increased the concentration and total removal of Pb in the shoots of rainbow pink, thus to reduce the remediation time. However, the application of EDTA was potential to pollute the groundwater. The result also indicated that 5 mmol EDTA/kg was recommended because the soil used in this study is a silty clay soil.
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Montenegro, Inês Paes de Faria Monteiro. "Autochthonous Bioaugmentation - a Strategy For Enhanced Phytoremediation / Bioremediation of Mixed Contamination in Saltmarshes." Master's thesis, 2015. https://repositorio-aberto.up.pt/handle/10216/86324.

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Montenegro, Inês Paes de Faria Monteiro. "Autochthonous Bioaugmentation - a Strategy For Enhanced Phytoremediation / Bioremediation of Mixed Contamination in Saltmarshes." Dissertação, 2015. https://repositorio-aberto.up.pt/handle/10216/86324.

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Jung-Chi, Lu, and 呂榮吉. "A Simple Bio-Chip Utilizing Electrokinetics-Enhanced Nanocolloid Conjugation for the Rapid Identification of Microorganism." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/55042920301472101878.

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碩士
崑山科技大學
電腦與通訊研究所
104
Dielectrophoresis (DEP) has been widely used to manipulate, separate, and concentrate microscale particles. Unfortunately, DEP force is difficult to be used in regard to the manipulation of nanoscale molecules/particles. For manipulation of 50 to 100-nm particles, the electrical field strength must be higher than 3 × 106 V/m, and with a low applied voltage of 10 Vp-p, the electrode gap needs to be reduced to submicrons. Our research consists of a novel and simple approach, using a several tens micrometers scale electrode (low cost and easy to fabricate) to generate a dielectrophoretic microparticle assembly to form nanogaps with a locally amplified alternating current (AC) electric field gradient, which is used to rapidly trap nanocolloids. The results show that the amplified DEP force could effectively trap 20-nm colloids in the nanogaps between the 5-μm particle aggregates. The concentration factor at the local detection region was shown to be approximately 5 orders of magnitude higher than the bulk solution. This approach was also successfully used in bead-based surface-enhanced Raman spectroscopy (SERS) for the rapid identification of bacteria from diluted blood.
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Books on the topic "Phytoremediation enhanced by microorganism"

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Johnson, A. Amendment-enhanced phytoextraction of soil contaminants. Hauppauge, N.Y: Nova Science Publishers, 2010.

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A, Johnson, and Singhal Naresh 1963-, eds. Amendment-enhanced phytoextraction of soil contaminants. Hauppauge, N.Y: Nova Science Publishers, 2009.

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Book chapters on the topic "Phytoremediation enhanced by microorganism"

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Rajhi, Hayfa, and Anouar Bardi. "Spinoffs of Phyoremediation and/or Microorganism Consortium in Soil, Sediment, and Water Treatments and Improvement: Study of Specific Cases and Its Socioeconomic and Environmental Advantages." In Phytoremediation, 157–82. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-17988-4_9.

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Song, Jing, Yong M. Luo, and Long H. Wu. "Chelate-Enhanced Phytoremediation of Heavy Metal Contaminated Soil." In Biogeochemistry of Chelating Agents, 366–82. Washington, DC: American Chemical Society, 2005. http://dx.doi.org/10.1021/bk-2005-0910.ch022.

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Anjum, Shahnaz, Shayista Yousuf, and Urfeya Mirza. "Recent Trends in Transgenic Plants for Enhanced Phytoremediation." In Bioremediation and Phytoremediation Technologies in Sustainable Soil Management, 241–61. Boca Raton: Apple Academic Press, 2022. http://dx.doi.org/10.1201/9781003280682-14.

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Singh, Jyoti, and Ajay Veer Singh. "Microbial Strategies for Enhanced Phytoremediation of Heavy Metal-Contaminated Soils." In Environmental Pollutants and Their Bioremediation Approaches, 257–72. Boca Raton : Taylor & Francis, CRC Press, 2017.: CRC Press, 2017. http://dx.doi.org/10.1201/b22171-9.

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Uzoh, Ifeyinwa Monica, Chinyere Blessing Okebalama, Charles Arizechukwu Igwe, and Olubukola Oluranti Babalola. "Management of Soil-Microorganism: Interphase for Sustainable Soil Fertility Management and Enhanced Food Security." In Food Security and Safety, 475–94. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-50672-8_25.

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Wei, Shiqiang. "Phytoremediation of Contaminated Soils with Polycyclic Aromatic Hydrocarbons and Its Ecologically Enhanced Techniques." In Molecular Environmental Soil Science at the Interfaces in the Earth’s Critical Zone, 200–202. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-05297-2_60.

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Dick, W. A., R. O. Ankumah, G. McClung, and N. Abou-Assaf. "Enhanced Degradation of S-EthylN,N-Dipropylcarbamothioate in Soil and by an Isolated Soil Microorganism." In ACS Symposium Series, 98–112. Washington, DC: American Chemical Society, 1990. http://dx.doi.org/10.1021/bk-1990-0426.ch008.

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"Phytoremediation." In Natural and Enhanced Remediation Systems, 259–88. CRC Press, 2001. http://dx.doi.org/10.1201/9781420033069-10.

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"Phytoremediation." In Natural and Enhanced Remediation Systems. CRC Press, 2001. http://dx.doi.org/10.1201/9781420033069.ch5.

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Bertha Ehis-Eriakha, Chioma, Stephen Eromosele Akemu, Simon Obgaji Otumala, and Chinyere Augusta Ajuzieogu. "Biotechnological Potentials of Microbe Assisted Eco-Recovery of Crude Oil Impacted Environment." In Crude Oil - New Technologies and Recent Approaches [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98808.

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Globally, the environment is facing a very challenging situation with constant influx of crude oil and its derivatives due to rapid urbanization and industrialization. The release of this essential energy source has caused tremendous consequences on land, water, groundwater, air and biodiversity. Crude oil is a very complex and variable mixture of thousands of individual compounds that can be degraded with microbes with corresponding enzymatic systems harboring the genes. With advances in biotechnology, bioremediation has become one of the most rapidly developing fields of environmental restoration, utilizing microorganisms to reduce the concentration and toxicity of various chemical pollutants, such as petroleum hydrocarbons, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, phthalate esters, nitroaromatic compounds and industrial solvents. Different remediation methods have been introduced and applied with varied degrees of success in terms of reduction in contamination concentration without considering ecotoxicity and restoration of biodiversity. Researchers have now developed methods that consider ecotoxicology, environmental sustainability and ecorestoration in remediation of crude oil impacted sites and they are categorized as biotechnological tools such as bioremediation. The approach involves a natural process of microorganisms with inherent genetic capabilities completely mineralizing/degrading contaminants into innocuous substances. Progressive advances in bioremediation such as the use of genetically engineered microbes have become an improved system for empowering microbes to degrade very complex recalcitrant substances through the modification of rate-limiting steps in the metabolic pathway of hydrocarbon degrading microbes to yield increase in mineralization rates or the development of completely new metabolic pathways incorporated into the bacterial strains for the degradation of highly persistent compounds. Other areas discussed in this chapter include the biosurfactant-enhanced bioremediation, microbial and plant bioremediation (phytoremediation), their mechanism of action and the environmental factors influencing the processes.
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Conference papers on the topic "Phytoremediation enhanced by microorganism"

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Minut, Mariana, Mihaela Rosca, Petronela Cozma, Mariana Diaconu, and Maria Gavrilescu. "The Beneficial Role of Some Microorganism in Soil Phytoremediation and Mitigation of Health Risk." In 2020 International Conference on e-Health and Bioengineering (EHB). IEEE, 2020. http://dx.doi.org/10.1109/ehb50910.2020.9280178.

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Gao, L. D., R. J. Zheng, T. An, S. Zhang, and M. L. Pang. "Enhanced Phytoremediation of Pb-contaminated Soil with -Cyclodextrin." In 5th International Conference on Advanced Design and Manufacturing Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icadme-15.2015.176.

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Chen, Tao, Chengxun Sun, and Weiwei Chen. "Tween80-enhanced phytoremediation of polychlorinated biphenyls-contaminated soil." In The 3rd International Conference on Application of Materials Science and Environmental Materials (AMSEM2015). WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813141124_0031.

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Reddy, Krishna R., Gema Amaya-Santos, and Girish Kumar. "Environmental Sustainability Assessment of Soil Amendments for Enhanced Phytoremediation." In ASCE India Conference 2017. Reston, VA: American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784482025.014.

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Angelova, Violina. "PHYTOREMEDIATION POTENTIAL OF ENHANCED TOBACCO IN SOIL CONTAMINATED WITH HEAVY METALS." In 2nd International Scientific Conference. Association of Economists and Managers of the Balkans, Belgrade, Serbia, 2018. http://dx.doi.org/10.31410/itema.2018.1049.

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Ito, Miu, and Yuichi Sugai. "Study on Enhanced Oil Recovery Using Microorganism Generating Foam in Presence of Nanobubbles." In SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205671-ms.

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Abstract Both high cost and environmental load of surfactant are issues to be solved in foam EOR. Moreover, it is difficult to control the injection of surfactant and gas so that the foam is generated in only high permeable zones selectively in oil reservoir. The authors have found a foam generating microorganism and hit upon an idea of the microbial foam EOR which makes the microorganism do generating foam in oil reservoir. The mechanism of the microbial foam generation and culture condition suitable for the foam generation were studied in this study. A species of Pseudomonas aeruginosa was used as a foam producer in this study. It was cultured in the medium consisting of glucose and eight kinds of minerals at 30 °C and atmospheric pressure under anaerobic conditions. Because P. aeruginosa generally grows better under aerobic conditions, the microorganism was supplied with oxygen nanobubbles as the oxygen source. The carbon dioxide nanobubbles were also used as a comparison target in this study. The state of foam generation in the culture solution was observed during the cultivation. The surface tension, surfactant concentration, protein concentration, polysaccharides concentration and bacterial population of the culture solution were measured respectively. The foam was started to be generated by the microorganism after 2 days of cultivation and its volume became maximum after 3 days of cultivation. The foam generation was found in the culture solution which contained both oxygen nanobubbles and carbon dioxide nanobubbles whereas little foam was found in non-nanobubbles culture solution. The foam generation found in the culture solution containing carbon dioxide nanobubbles was more than that in the culture solution containing oxygen nanobubbles. Both gas and protein concentration increased along with the formation of the foam whereas surfactant and polysaccharides were not increased, therefore, the foam was assumed to be generated with gas and protein which were generated by P. aeruginosa. It was found that the carbon dioxide nanobubbles were positively charged in the culture medium whereas they were negatively charged in tap water through the measurement of zeta potential of nanobubbles, therefore, the carbon dioxide nanobubbles attracted cations in the culture medium and became positively charged. Positively charged carbon dioxide nanobubbles transported cations to the microbial cells of P. aeruginosa. Among cations in the culture medium, ferrous ions are essential for the protein generation of P. aeruginosa, therefore, the positively charged carbon dioxide nanobubbles attracted ferrous ions and transport them to the microbial cells, resulting the growth and metabolism of P. aeruginosa were activated. Those results suggest that the microbial foam EOR can be materialized by supplying the microorganism with carbon dioxide nanobubbles or ferrous ions.
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Chen, T., C. X. Sun, G. G. Lin, and Weiwei Chen. "Change in enzymatic activity in Tween80-enhanced phytoremediation of polychlorinated biphenyl-contaminated soil." In The 3rd International Conference on Application of Materials Science and Environmental Materials (AMSEM2015). WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813141124_0026.

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Zhang, Zhiming, Dibyendu Sarkar, Virinder Sidhu, and Rupali Datta. "REMOVAL OF LEAD IN RESIDENTIAL SOILS OF JERSEY CITY USING BIODEGRADABLE CHELATING AGENT-ENHANCED PHYTOREMEDIATION." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-356930.

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Wang, Hong, Haibo Li, and Tieheng Sun. "Notice of Retraction: Microbe Agent Enhanced Phytoremediation of PAHs Contaminated Farmland Soil with Alfalfa (Medicago sativa L.)." In 2011 5th International Conference on Bioinformatics and Biomedical Engineering. IEEE, 2011. http://dx.doi.org/10.1109/icbbe.2011.5781342.

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Abd Rahman, Hasrizal, M. Faizal Sedaralit, Suzalina Zainal, and Julia R. de Rezende. "Modelling Reservoir Souring Mitigation Strategy Based on Dynamic Microorganisms Interactions." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/211359-ms.

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Abstract Managing reservoir souring is on of the challenge in oil and gas industry, especially fields without previous records of H2S productions. Due to activities such as waterflooding, reservoirs’ conditions were changed, which indirectly inducing the environment to start producing H2S gas. In low temperature fields, main contributor to the H2S production was identified as biogenic process, where microorganisms catalyzed the sour gas production. Conventionally, sulphate reducing microorganism was always blamed as the culprit in contributing towards H2S production. However, abundance of literatures discussed about contribution of other microorganisms towards souring processes. Due to the complexity of their interactions, current approach to treat or control biogenic souring became one of the most challenging issues. This study will focus on the laboratory studies of sulphide production by microorganisms and modelling various microorganisms interactions towards chemical treatment introduced to mitigate it. Started with microorganisms sampling from fields with high SRB, the samples were then enriched in the laboratory. To identify microorganismss from samples, cultures were sent for PCR and DNA sequencing. Based on the results, microorganisms were profiled. Batch test were conducted by dosing pre-determined dosage of biocide and nitrate. Production of sulphide were monitored up to 92days. Based on the sulphide production, effectiveness of the treatments were determined. A model, which previously developed to determine the potential of reservoir souring, enhanced with addition of dynamic interaction of microorganisms. Factors such as nutrients, type of microorganisms, treatment chemicals, and their byproducts contributed towards the model. microorganisms. In the batch test, chemicals were dosed once into culture. Results obtained shows that nitrate treatment suppressed the sulphide production for ashort term period, where after the nitrate depleted, the number of microorganisms and sulphide productions were bounced back. Biocidetreatment, in contrast, generally suppressed all microorganisms in the cultures, effectively control the microorganisms number and maintaining low sulphide production for the entire duration of the experiment. The model that being developed in this study tested with synthetic data that mimick to field conditions, type of microorganisms and chemical treatments to observe their output pattern. It was found that the pattern output from the synthetic data matched with experimental results, which shows the model was sensitive and reliable to model the mitigation and control strategy for biogenic reservoir souring. The model based on dynamic interactions of microorganisms towards chemical treatments (biocide and/or nitrate) is the novel element in this study. Past studies were always focus on single population model, which SRB is the main input for the model, while this study enhanced its accuracy by introducing multi-population factor.
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Reports on the topic "Phytoremediation enhanced by microorganism"

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Li, Jiangxia, Jun Zhang, Steven Larson, John Ballard, Kai Guo, Zikri Arslan, Youhua Ma, Charles Waggoner, Jeremy White, and Fengxiang Han. Electrokinetic-enhanced phytoremediation of uranium-contaminated soil using sunflower and Indian mustard. Engineer Research and Development Center (U.S.), June 2020. http://dx.doi.org/10.21079/11681/37237.

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