Journal of Bioremediation and Biodegradation最新文献_第10页

Degradation of Profenofos and λ-Cyhalothrin Using Endogenous Bacterial Isolates and Detection of the Responsible Genes 内源菌株降解丙烯磷和λ-氯氟氰菊酯及相关基因的检测

Journal of Bioremediation and Biodegradation Pub Date : 2016-07-15 DOI: 10.4172/2155-6199.1000360

R. Abdullah, Sherif B Abde, Ghani, N. Sukar

引用次数: 8

Microalgal-Bacterial Consortium in Polyaromatic Hydrocarbon Degradation of Petroleum Based Effluent 微藻-细菌联合降解石油基废水中的多芳烃

Journal of Bioremediation and Biodegradation Pub Date : 2016-07-07 DOI: 10.4172/2155-6199.1000359

Egberomoh Godsgift Omojevwe, F. Ezekiel

{"title":"Microalgal-Bacterial Consortium in Polyaromatic Hydrocarbon Degradation of Petroleum Based Effluent","authors":"Egberomoh Godsgift Omojevwe, F. Ezekiel","doi":"10.4172/2155-6199.1000359","DOIUrl":"https://doi.org/10.4172/2155-6199.1000359","url":null,"abstract":"The recurrent and indiscriminate discharge of flow stations' crude oil effluent has led to an increased polyaromatic hydrocarbons (PAHs) level in the environment. PAHs are high-priority environmental pollutants of significant human health concerns, thus considerable effort has been made in this study to biodegrade these PAHs using microalgalbacterial consortia. Crude oil effluent samples collected from the saver pit at Egbaoma flow station in the Niger Delta region of Nigeria were analysed biochemically and microbiologically. Three species of bacteria and two species of microalgae isolated, characterized and screened emerged as best hydrocarbon utilizers. The consortia comprised of Chlorella minutissimma and Aphanocapsa sp. as microalgae inoculants, while Citrobacter sp. SB9, Pseudomonas aeruginosa SA3 and Bacillus subtilis SA7 as bacterial inoculants. Growth dynamics, pH and degradation of the effluents' PAH content were analyzed for a period of ten days. Consortium BCC (bacteria inoculants and Chlorella minutissimma), BCCA (all inoculants) and BCA (bacteria inoculants and Aphanocapsa sp.) had PAH degradation percentage of 92.09%, 67.76% and 47.19% and optical density (OD) of 0.1255°A, 0.0669°A and 0.0703°A from an initial OD of 0.0126°A respectively. Only BCA had an acidic pH after ten days. Effective synergism and excellent PAH degradation is achievable and highly recommendable with microalgal-bacterial consortium yet its success is highly dependent on the consortium assembling, therefore, proper selection of the microbes for biodegradation is paramount to the success and efficiency of the degradation process.","PeriodicalId":15262,"journal":{"name":"Journal of Bioremediation and Biodegradation","volume":"80 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83950384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Application of Microbial Culture and Rhamnolipid for Improving the Sedimentation of Oil Sand Tailings 微生物培养和鼠李糖脂在改善油砂尾矿沉降中的应用

Journal of Bioremediation and Biodegradation Pub Date : 2016-07-01 DOI: 10.4172/2155-6199.1000358

Soroor Javan Roshtkhari, C. Mulligan

{"title":"Application of Microbial Culture and Rhamnolipid for Improving the Sedimentation of Oil Sand Tailings","authors":"Soroor Javan Roshtkhari, C. Mulligan","doi":"10.4172/2155-6199.1000358","DOIUrl":"https://doi.org/10.4172/2155-6199.1000358","url":null,"abstract":"Densification of oil sand tailings deposited in the tailing ponds and recovering water from them are two major challenges in the oil sands surface mining industry. A small increase in the tailings settlement rate (which normally is very slow) can improve the densification of tailings and significantly reduce water consumption and the volume of the tailing ponds. In this work, the objective was to evaluate the role of a mixed culture of two microbial strains isolated from weathered oil and rhamnolipid (JBR 425) together with these strains in the sedimentation of fine tailing particles. It has been found that a mixed culture of two microbial strains isolated from weathered oil increased the sedimentation. Rhamnolipid (0.5%) together with these two microbial strains at 15°C ± 2°C showed significant increases in sedimentation (by a factor of 5.1), the concentration of larger particles (by a factor of 2.63), the particle mean diameter (by a factor of 2.70) and flocculation in the tailings samples compared to the control while the zeta potential is still negative. This means that the mechanism of flocculation is probably due to increasing the hydrophobicity of the particles, interaction of biosurfactant and high molecular weight microbial organic compounds through a bridging mechanism with clay particles. This work shows the potential of using rhamnolipid and microbial culture in order to increase the oil sand sedimentation through flocculation and microbial activity in a more environmentally friendly densification process.","PeriodicalId":15262,"journal":{"name":"Journal of Bioremediation and Biodegradation","volume":"60 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85856952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Status of Remediation Approaches 修复方法现状

Journal of Bioremediation and Biodegradation Pub Date : 2016-06-20 DOI: 10.4172/2155-6199.1000E176

S. Kulshreshtha

引用次数: 0

Continuing and Emerging Concerns about Contaminants 对污染物的持续和新出现的关注

Journal of Bioremediation and Biodegradation Pub Date : 2016-06-20 DOI: 10.4172/2155-6199.1000E175

B. Ramakrishnan

引用次数: 0

Foliar Nutrient Composition of 19 Tree Species Grown on a PhytocappedLandfill Site 植物覆盖填埋场19种树种叶片营养成分的研究

Journal of Bioremediation and Biodegradation Pub Date : 2016-06-13 DOI: 10.4172/2155-6199.1000357

K. Venkatraman, N. Ashwath

{"title":"Foliar Nutrient Composition of 19 Tree Species Grown on a PhytocappedLandfill Site","authors":"K. Venkatraman, N. Ashwath","doi":"10.4172/2155-6199.1000357","DOIUrl":"https://doi.org/10.4172/2155-6199.1000357","url":null,"abstract":"An alternative landfill capping technique ‘Phytocapping’ (establishment of perennial plants on a layer of soil placed over the waste) was trailed at Rockhampton, Australia, as it is eco-friendly, less expensive and socially acceptable. In this capping, trees are used as ‘Bio-pumps and Screens’ and soil cover as ‘Storage’. They together minimise water percolation leading to reduced leachate production. Twenty one tree species were grown on two depths of soil (700 mm and 1400 mm) and monitored for their growth and their ability to restrict water infiltration through the waste. A very common question raised by most scientist and engineers is growth and survival of tree species in a landfill environment. Hence to determine the conditions and health of the tree species, foliar and foliar litter nutrient concentrations were measured in all the tree species grown on the phytocapped landfill site. The 3 year-old trees showed slightly elevated levels of nutrient and this will continue as the trees mature and develop more roots. The trees in the 700 mm soil cover contained slightly higher leaf concentrations of nutrients due to the possible closer proximity of their roots to the waste.","PeriodicalId":15262,"journal":{"name":"Journal of Bioremediation and Biodegradation","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77695826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Molecular Docking Studies on Potent Adsorbed Receptor of Thrh Protein: A New Target for Biodegradation of Indigo Dye Thrh蛋白强效吸附受体的分子对接研究:靛蓝染料生物降解的新靶点

Journal of Bioremediation and Biodegradation Pub Date : 2016-06-13 DOI: 10.4172/2155-6199.1000356

P. Prabhavathi, R. Rajendran, S. Karthiksundaram, S. Dineshkumar, P. Santhanam, D. Premnath, G. Ponmari, Manik, A. An, Mi Kyung Kim

引用次数: 5

Arsenic Occurrence, Ecotoxicity and its Potential Remediation 砷的赋存、生态毒性及其潜在的修复方法

Journal of Bioremediation and Biodegradation Pub Date : 2016-06-05 DOI: 10.4172/2155-6199.1000E174

Turquoise C Alex, Er, E. Gulledge, F. Han

引用次数: 3

Use of Ecopiling to Remediate PAH-Contaminated Storm-water LagoonSediment 利用生态编译修复多环芳烃污染的雨水泻湖沉积物

Journal of Bioremediation and Biodegradation Pub Date : 2016-05-25 DOI: 10.4172/2155-6199.1000355

Xuemei Liu, Samuel Kiwanuka, K. Cleary, D. Ryan, D. Dowling, K. Germaine

{"title":"Use of Ecopiling to Remediate PAH-Contaminated Storm-water LagoonSediment","authors":"Xuemei Liu, Samuel Kiwanuka, K. Cleary, D. Ryan, D. Dowling, K. Germaine","doi":"10.4172/2155-6199.1000355","DOIUrl":"https://doi.org/10.4172/2155-6199.1000355","url":null,"abstract":"Polycyclic Aromatic Hydrocarbons (PAHs) are widely distributed in the environment originating from both natural and anthropogenic sources. Consequently, they are found ubiquitously in the lithosphere, hydrosphere, atmosphere and biosphere. They are of major concern due to their recalcitrant nature, ability to bio-accumulate and their toxic, carcinogenic and mutagenic effects on biological systems. One major anthropogenic source of PAHs is creosote which is used as a wood preservative and contains 85% PAHs (w/w). Industrial facilities carrying out creosote treatment activities can result in major contamination of soil and groundwater at these sites. The current study investigates the potential of Ecopiling as a bioremediation strategy for creosote contaminated soil/sediment at a former wood preservation facility. The study involved greenhouse experiments to assess the phytoremediation potential of perennial ryegrass (Lolium perenne L.) and onsite construction of two small-scale, trial Ecopiles. The greenhouse study showed that the creosote contaminated sediment had an inhibitory effect on plant growth and reduced the effectiveness of rhizoremediation. However, the use of a clean soil overlay led to a significant decrease in the phyto-toxicity experienced by the ryegrass plants and subsequently resulted in greater PAH degradation in these pots. The use of Ecopiling was found to reduce the sum of EPA 16 PAH concentrations in the sediment by 94-96% after 730 days. The incorporation of spent-mushroom compost into the Ecopile, did initially increase the rate of PAH degradation, however, after 730 days there was no significant difference between the PAH concentrations remaining in the two Ecopiles. Although Ecopiling is a slow process compared to thermal and chemical treatments it has proven to be an effective and low cost process for the remediation of PAHs from industrial sediments.","PeriodicalId":15262,"journal":{"name":"Journal of Bioremediation and Biodegradation","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75639976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Bioremediation of Soil Contaminated with Tannery Effluent by Combined Treatment with Cow Dung and Microorganisms Isolated from Tannery Effluent 牛粪与制革废水微生物联合处理对土壤污染的生物修复研究

Journal of Bioremediation and Biodegradation Pub Date : 2016-05-23 DOI: 10.4172/2155-6199.1000354

Akpomie Olubunmi O, Ejechi Bernard O

{"title":"Bioremediation of Soil Contaminated with Tannery Effluent by Combined Treatment with Cow Dung and Microorganisms Isolated from Tannery Effluent","authors":"Akpomie Olubunmi O, Ejechi Bernard O","doi":"10.4172/2155-6199.1000354","DOIUrl":"https://doi.org/10.4172/2155-6199.1000354","url":null,"abstract":"Bioremediation potential of a combination of cow dung and a microbial consortium (Pseudomonas aeruginosa, Penicillium chrysogenum and Aspergillus niger) in soil contaminated with tannery effluent, was investigated in the laboratory. Concentrations of phenol, sulphide and ammonium nitrogen in contaminated soil, were significantly reduced (P=0.000) to permissible levels after treatment with microbial consortium, cow dung or combination of microbial consortium and cow dung. Reduction of these compounds was best with combination of microbial consortium and cow dung. Cr (VI) level (139.2 mg/kg) was significantly reduced (P=0.000-0.050) by 33.2, 96.9 and 99.9% after treatment with microbial consortium, cow dung, and combination of consortium and cow dung, respectively. The treatments elevated soil pH from 5.8 to 6.9-7.2. Growth of maize in soil treated with the combination of microbial consortium and cow dung was not significantly different from growth in uncontaminated soil. Cr (VI) concentrations in the maize tissues were very low (0.002-0.006 mg/g). Thus combination of microbial consortium and cow dung may have potential application in bioremediation of soil polluted by tannery wastes.","PeriodicalId":15262,"journal":{"name":"Journal of Bioremediation and Biodegradation","volume":"19 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80799472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15