Journal of Bioremediation and Biodegradation最新文献_第7页

Waste Water Treatment by Environmental Microbiology 环境微生物处理废水的研究

Journal of Bioremediation and Biodegradation Pub Date : 2017-02-28 DOI: 10.4172/2155-6199.1000386

Hiral B Borasiya, M. Shah

引用次数: 2

Identification of Core Microorganism in Anammox Consortia Obtained from Different Incubation Environments 不同培养环境厌氧氨氧化菌群核心微生物的鉴定

Journal of Bioremediation and Biodegradation Pub Date : 2017-02-13 DOI: 10.4172/2155-6199.1000385

Tingting Zhu, Zuotao Zhang, Shenghua Peng, Sitong Liu

{"title":"Identification of Core Microorganism in Anammox Consortia Obtained from Different Incubation Environments","authors":"Tingting Zhu, Zuotao Zhang, Shenghua Peng, Sitong Liu","doi":"10.4172/2155-6199.1000385","DOIUrl":"https://doi.org/10.4172/2155-6199.1000385","url":null,"abstract":"Anammox is a novel and sustainable wastewater treatment technology which attracts much attention. The \u0000impossible isolation of pure anammox bacteria makes the issue about which bacteria types mainly involved in the \u0000anammox consortia meaningful but still lacks of investigation nowadays. In order to elucidate the core constituent of \u0000anammox consortia, we investigated microbial communities of six anammox consortia with different origins and \u0000activities by cloning 16S rRNA gene region. It is found that the stable anammox consortia have similar community \u0000structure, even with different origins (e.g. activated sludge and ground water). The bacteria species belonging to \u0000Chlorobi, Chloroflexi, Bacteroidetes, Proteobacterium, Nitrosomonas and Armatimonadetes are the common \u0000accompanying bacteria with Plantomycetes in anammox consortia, serving as core microorganisms. The further \u0000nitrogen removal profile analysis suggested that, high nitrogen removal activity corresponded to high Plantomycetes \u0000percentage. On the contrary, the bacteria species of Rhodocyclaceae, Acidobacteria and Verrucomicrobia mainly \u0000present in anammox consortia with abnormal nitrogen removal performance, such as under conditions of bacteria \u0000being inhibited. These findings would advance the understanding of anammox microbial community, which \u0000 correlates with the stability and robustness of anammox consortia.","PeriodicalId":15262,"journal":{"name":"Journal of Bioremediation and Biodegradation","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75352611","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

Evaluation of Heavy Metals Resistant Micrococcus sp. Isolated from Rivers in Basra, Iraq 伊拉克巴士拉河中重金属耐药微球菌的鉴定

Journal of Bioremediation and Biodegradation Pub Date : 2017-01-31 DOI: 10.4172/2155-6199.1000383

M. Anwar, S. Ali, A. Asaad

{"title":"Evaluation of Heavy Metals Resistant Micrococcus sp. Isolated from Rivers in Basra, Iraq","authors":"M. Anwar, S. Ali, A. Asaad","doi":"10.4172/2155-6199.1000383","DOIUrl":"https://doi.org/10.4172/2155-6199.1000383","url":null,"abstract":"The present study aims to isolation, identification and characterization of heavy metal resistant bacteria from six \u0000 rivers in Basra Southern Iraq. Two species of Micrococcus (M. halobius and M. kristinae) were isolated on the basis \u0000 of morphological and biochemical profiles and selected based on high levels of heavy metals (cadmium, lead, copper \u0000 and nickel) resistance. The concentrations of dissolved heavy metals (Cd, Pb, Cu and Ni) in rivers were determined. \u0000 The maximum tolerance concentration (MTC) of isolates against Pb, Cu, Cd and Ni was determined in solid media \u0000 after 72 h incubation. All isolates were resistant to Pb (2200-2600) μg mL-1, Cu (400) μg mL-1, Cd (300-400) μg mL-1 and Ni (200-300) μg ml-1. Living biomass of M. halobius and M. kristinae were used for the removal of heavy metal \u0000 ions at different concentrations (25, 50 and 100) μg mL-1 from aqueous metal solutions. The best concentration of \u0000 removal was 25 μg mL-1 after 72 h incubation at 120 rpm. Percent removal efficiency of M. kristinae was 47.22, 26.26 \u0000 for Cu and Pb respectively, and for M. halobius was 31.52, 27.87 for Cd and Ni respectively.","PeriodicalId":15262,"journal":{"name":"Journal of Bioremediation and Biodegradation","volume":"34 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2017-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73604723","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: 3

Rhizoremediation of Contaminated Soils by Comparing Six Roots Species in Al-Wafra, State of Kuwait 比较科威特Al-Wafra地区6种根系对污染土壤的根修复作用

Journal of Bioremediation and Biodegradation Pub Date : 2017-01-31 DOI: 10.4172/2155-6199.1000384

Danah Khazaal Al-Ameeri, M. A. Sarawi

{"title":"Rhizoremediation of Contaminated Soils by Comparing Six Roots Species in Al-Wafra, State of Kuwait","authors":"Danah Khazaal Al-Ameeri, M. A. Sarawi","doi":"10.4172/2155-6199.1000384","DOIUrl":"https://doi.org/10.4172/2155-6199.1000384","url":null,"abstract":"Toxic heavy metals concentrations in soils are locally quite high in Kuwait due to the gulf war in 1991. There are many reasons that make heavy metals high in Kuwait soils such as massive oil spills and direct dumping of untreated sewage and hydrocarbons. Phytoremediation may offer a possible solution to this problem because it might treat the soils through the use of plants even without the demand of removing the contaminated material and disposing it elsewhere. This research project will discuss the best contribution among six types of plant (tree) species (Conocarpus, Tamarix, Phoenix, Rhamnus, Vitex Agnus-Castus and Salix) collected from Wafra 14 km south Kuwait and another six reference trees from the same plant species collected for correlation from Sabah Al -Salem residential area. The samples are divided into two sample categories (roots and soil). From the chemical analysis it was found that rhizoremediation is a unique process in decreasing the level of soil contamination of hydrocarbons and trace metals. The most effective part of the plant in accumulating hydrocarbons and heavy metals were the roots while the appropriate plant was Tamarix. As a recommendation there is a need for studying the fruits of Phoenix to detect accumulates of TPH and Trace Metals and to decrease the harmful effects of the fruits on the human.","PeriodicalId":15262,"journal":{"name":"Journal of Bioremediation and Biodegradation","volume":"14 1","pages":"1-14"},"PeriodicalIF":0.0,"publicationDate":"2017-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84414464","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

Effect of Heavy Metals on the Desmodesmus quadricauda Isolated from the River Nile, Egypt 重金属对埃及尼罗河四头棘足连虫的影响

Journal of Bioremediation and Biodegradation Pub Date : 2017-01-30 DOI: 10.4172/2155-6199.1000382

Najah Ibrahim Abdulwassi

{"title":"Effect of Heavy Metals on the Desmodesmus quadricauda Isolated from the River Nile, Egypt","authors":"Najah Ibrahim Abdulwassi","doi":"10.4172/2155-6199.1000382","DOIUrl":"https://doi.org/10.4172/2155-6199.1000382","url":null,"abstract":"The wastewater of Iron and Steel Factories contains high level of metallic ions, especially Fe which represents the main component of the waste followed by Zn, Cu, Pb, Ni, Hg, Co, Cd, Mn and Cr. Bioassay experiment were achieved to determine the effect of industrial waste of Iron and Steel Factories at Helwan on growth, chlorophyll a and photosynthetic activity of one alga (Desmodesmus quadricauda) which represent one of the most dominant phytoplankton in the Nile River. The growth rate (counting and chlorophyll a) was more sensitive than photosynthetic activity. A synergistic effect was found between the trace metals of the waste. The toxicity of the waste decreased gradually by time. The EC50 of the growth rate values indicated that, the inhibitory effect of waste on growth of the alga showed slight decrease during the four days incubation, the phenomenon was enhanced on the 5th day when the EC50 reached to 46.84. The EC50 values of waste inhibited chlorophyll a showed a significant increase till the 3rd day when the EC50 reached to 47.79. The EC50 values had considerably decreased to 32.78 on the 4th day then abruptly increase to 47.32 on the 5th day. Industrial waste showed a significantly reduced the photosynthetic activity at 48% and 60% concentration. The maximum decreased observed on the 4th day and represented by 62.92% and 79.02% below their control values, respectively.","PeriodicalId":15262,"journal":{"name":"Journal of Bioremediation and Biodegradation","volume":"63 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2017-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84134976","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

Biodegradation of Natural Rubber Latex of Calotropis procera by Two Endophytic Fungal Species 两种内生真菌对大角鹿角天然胶乳的生物降解作用

Journal of Bioremediation and Biodegradation Pub Date : 2017-01-19 DOI: 10.4172/2155-6199.1000380

Nadia H. Mohamed, M. Ismail, Wael M Abdel-Mageed, Ahmed A. M. Shoreit

引用次数: 10

Phytoremediation for Hazardous Liquid Industrial Waste Using SixFamous Trees Species in Al Wafrah, Kuwait 利用科威特Al Wafrah六种著名树种修复危险工业废液

Journal of Bioremediation and Biodegradation Pub Date : 2017-01-11 DOI: 10.4172/2155-6199.1000378

M. Al-Ibrahim, A. Mohammad

{"title":"Phytoremediation for Hazardous Liquid Industrial Waste Using SixFamous Trees Species in Al Wafrah, Kuwait","authors":"M. Al-Ibrahim, A. Mohammad","doi":"10.4172/2155-6199.1000378","DOIUrl":"https://doi.org/10.4172/2155-6199.1000378","url":null,"abstract":"Metal concentrations in soils are locally quite high in Kuwait due to many reasons such as massive oil spills during the gulf war in 1991 as well as direct dump for untreated sewage and hydrocarbon. Phytoremediation may offer a possible solution to this problem because it treats the soils through the use of plants even without the demand of removing the contaminated material and disposing it elsewhere. This research project focused on the best contribution of phytoremediating the area between six types of plant tree species collected (Conocarpus, Tamarix, Phoenix, Rhamnus, Vitex agnus-castus and Salix) from Wafra 14 Km area and another six reference trees from the same plant species collected for correlation from South Khitan and Rigee areas. The samples divided into three sample categories (leaves, stem, and soil). From the chemical analysis, it was found that phytoremediation is a unique process in reducing the level of soil contamination of hydrocarbons and trace metals. The most and effective part of the plant in accumulating hydrocarbons and heavy metals were the leaves while the appropriate plant was Vitex agnus-castus. As a recommendation, there is need for phytoextraction of heavy metals by intercropping maize plants with local agro forestry shrubs to reduce amount of heavy metals in the soil.","PeriodicalId":15262,"journal":{"name":"Journal of Bioremediation and Biodegradation","volume":"194 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79740899","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

Biodegradation of Polyethylene by Green Photosynthetic Microalgae 绿色光合微藻对聚乙烯的生物降解

Journal of Bioremediation and Biodegradation Pub Date : 2017-01-11 DOI: 10.4172/2155-6199.1000381

R. Kumar, G. R. Kanna, S. Elumalai

{"title":"Biodegradation of Polyethylene by Green Photosynthetic Microalgae","authors":"R. Kumar, G. R. Kanna, S. Elumalai","doi":"10.4172/2155-6199.1000381","DOIUrl":"https://doi.org/10.4172/2155-6199.1000381","url":null,"abstract":"Conventional methods of polyethylene degradation including incineration, landfill and chemical treatment are lethal to the neighboring environment by causing hazardous effects on living organisms. A better solution for the complete degradation of polyethylene has not yet been formulated. However, to solve this global issue biological mode of polyethylene degradation may be evaluated and developed in the upcoming future. In this research investigation, microalgae like green algae, blue-green algae and diatoms were isolated from the domestic polyethylene bags dumped in the suburban water bodies and studied for its potency on deterioration of polyethylene. The dumped waste polyethylene bags were collected from three different sites of (Maduravoyal, Vanagaram and Poonamallee) Chennai, Tamil Nadu, India. Colonized mat of microalgae were isolated from the polyethylene sheets and the most dominant three different groups of microalgae were selected for the biological treatment of LD (low density) and HD (high density) polyethylene sheets. The most dominant microalgae were Scenedesmus dimorphus (Green microalga), Anabaena spiroides (blue-green alga) and Navicula pupula (Diatom). The T. S. (Transverse section) of polyethylene sheet has shown the proliferation of microalgae in both outer and inner sides of the polyethylene sheet and the erosion cum degradation can be seen obviously. The biological treatment of the selected microalgae on the LD and HD polyethylene sheets with their respective culture media resulted that the microalgae proliferated more on the LD than the HD polyethylene sheets followed by the highest percentage of degradation was obtained from Anabaena spiroides treatment (8.18%). Similarly, among the three microalgal groups treated over the LD polyethylene sheets. The scanning electron microscopical study reveals that the degradation was obviously evident in the treatment of LD polyethylene sheets using the microalga Anabaena spiroides (filamentous blue-green alga) and was found to grow feasibly rather than the other microalgae.","PeriodicalId":15262,"journal":{"name":"Journal of Bioremediation and Biodegradation","volume":"415 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2017-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84901735","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: 82

Elimination of Antibiotic Multi-Resistant Salmonella Typhimurium from Swine Wastewater by Microalgae-Induced Antibacterial Mechanisms 微藻诱导的猪废水中多重耐药鼠伤寒沙门菌抑菌机制的研究

Journal of Bioremediation and Biodegradation Pub Date : 2017-01-09 DOI: 10.4172/2155-6199.1000379

M. Paola, Jean Michel Prandinib, J. D. Kich, M. J. Silva

{"title":"Elimination of Antibiotic Multi-Resistant Salmonella Typhimurium from Swine Wastewater by Microalgae-Induced Antibacterial Mechanisms","authors":"M. Paola, Jean Michel Prandinib, J. D. Kich, M. J. Silva","doi":"10.4172/2155-6199.1000379","DOIUrl":"https://doi.org/10.4172/2155-6199.1000379","url":null,"abstract":"The effect of microalgae-based swine waste water treatment on the removal of antibiotic multi-resistant Salmonella enterica serovar typhimurium was investigated. Photobioreactors (PBRs) containing diluted swine digestate with and without microalgae Scenedesmus spp. were inoculated with S. typhimurium (108 Colony Forming Units per milliliters - CFU mL-1). Viable cells of S. typhimurium were quantified over time by plate counts and qPCR amplification of the Salmonella invasion gene activator, hilA. In the absence of microalgae, S. typhimurium concentrations increased 1.5 log cells mL-1 in 96 h. In the presence of microalgae, S. typhimurium was completely eradicated within 48 h. In the PBRs with controlled pH (6.8 ± 0.8), concentration of S. typhimurium remained constant (2.8 ± 0.2 log CFU mL-1) throughout 96 h. Thus, natural increase in pH>10 due to photosynthesis was detrimental to the antibiotic multiresistant bacteria survival. Phycoremediation holds promises as an alternative for waste water treatment process for the elimination of the serious public health threatening antibiotic multi-resistant bacteria, thus effectively avoiding Salmonellosis outbreaks arising from animal farming activities.","PeriodicalId":15262,"journal":{"name":"Journal of Bioremediation and Biodegradation","volume":"52 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2017-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88303227","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: 13

Extension of ASM2d to Model the Fate of 17ÃÂ±-Ethinylestradiol inActivated Sludge Systems 扩展ASM2d来模拟17ÃÂ±-炔雌醇灭活污泥系统的命运

Journal of Bioremediation and Biodegradation Pub Date : 2017-01-01 DOI: 10.4172/2155-6199.1000397

M. Lust, Ryan M. Ziels, S. Strand, and H. David Stensell

{"title":"Extension of ASM2d to Model the Fate of 17ÃÂ±-Ethinylestradiol inActivated Sludge Systems","authors":"M. Lust, Ryan M. Ziels, S. Strand, and H. David Stensell","doi":"10.4172/2155-6199.1000397","DOIUrl":"https://doi.org/10.4172/2155-6199.1000397","url":null,"abstract":"The discharge of the synthetic estrogen, 17α-ethinylestradiol (EE2), in wastewater treatment plant (WWTP) effluents is an environmental concern as this compound can alter the reproductive system of aquatic wildlife at low ng L-1 concentrations. The impact of EE2 at such low concentrations indicates the need to identify activated sludge (AS) process designs that minimize WWTP effluent EE2 concentrations. An EE2 fate and transformation model was developed based on the following mechanism: (1) EE2 production from deconjugation of EE2-3-sulfate, a conjugated form excreted from humans, (2) EE2 removal from biodegradation by heterotrophic biomass growing on other substrates, and (3) EE2 removal from sorption to activated sludge. These mechanisms were incorporated into the International Water Association (IWA) Activated Sludge Model No. 2d (ASM2d) to model the fate of EE2 across aerobic and biological nutrient removal (BNR) AS systems. The model was calibrated and evaluated for mixed liquor solids, nutrients, and EE2 using lab-scale aerobic and BNR AS reactors fed primary effluent and amended with ng.L-1 estrogen concentrations. A sensitivity analysis predicted effluent EE2 concentrations were most sensitive to the biodegradation rate coefficient (kbio,H), the influent biodegradable chemical oxygen demand to EE2 ratio, and the aerobic solids retention time and were least sensitive to the deconjugation rate coefficient (kcle,H) and the solidliquid partitioning coefficient. Predicted effluent EE2 concentrations were more sensitive to the kcle,H/kbio,H ratio for AS systems with low kbio,H values.","PeriodicalId":15262,"journal":{"name":"Journal of Bioremediation and Biodegradation","volume":"42 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81269353","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: 0