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Biogeochemical cycling of metals impacting by microbial mobilization and immobilization

Journal of Environmental Sciences 2018年第4期30卷 146-154页

作者： Ran Jing birthe v.kjellerup University of Maryland at College Park Department of Civil and Environmental Engineering 1147 Glenn L.Martin Hall College Park

Microbial mobilization and immobilization processes can affect the bioavailability and mobility of metals thereby influencing their toxicity and can therefore be utilized to treat solid and liquid wastes contaminated by metals. However, the microbial mobilization and immobilization of metals depends on the microbial metabolism, the environment conditions. In this review, mobilization and immobilization of metals are discussed with regard to the presence and function of involved microorganisms and in relation to applications such as bioleaching. Furthermore, the biosorption process is evaluated as a possible approach for microbial immobilization of metal on the basis of four mechanisms：（1） physical adsorption,（2） ion exchange,（3） complexation, and（4） microprecipitation. In addition, sulfide precipitation by sulfate reducing bacteria was included as an example of an application of microbial immobilization. Based on the evaluation and recommendations in this paper, bioremediation strategies for metals can be improved thus increasing the opportunity for field applications.

关键词： Bioleaching Biosorption Microbial immobilization Microbial mobilization Metals Toxicity

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Distribution of polychlorinated biphenyls in effluent from a large municipal wastewater treatment plant: Potential for bioremediation?

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Journal of Environmental Sciences 2019年第4期31卷 42-52页

作者： Ran Jing Soliver Fusi Alisha Chan Staci Capozzi birthe v.kjellerup University of Maryland at College Park Department of Civil and Environmental Engineering

This study involved an evaluation of the potential for bioremediation of polychlorinated biphenyls(PCBs) in the effluent from a large municipal wastewater treatment plant. It was focused on the presence of PCBs in two types of effluents: the continuous effluent present during dry weather conditions and the intermittently present effluent that was present during wet weather due to incoming stormwater. The annual discharge of PCBs for both types of effluent was calculated based on a five-year dataset(2011–2015). In addition, the toxicity and bioremediation potential of the PCBs in the effluent were also assessed. It was found that the continuous effluent was responsible for the majority of the discharged PCB into the receiving river(1821 g for five years), while the intermittent effluent contributed 260 g over the five *** average number of chlorine per biphenyl for the detected PCB congeners showed a 19%difference between the two types of effluent, which indicated a potential for organohalide respiration of PCBs during the continuous treatment. This was further supported by a high level of tri-, tetra-and penta-chlorinated congeners accounting for 75% of the anaerobically respired PCBs. Potential for aerobic degradation and thus biomineralization of PCBs was identified for both effluents. Furthermore, toxicity of 12 dioxin-like PCBs showed that normal operation of the wastewater reduced the toxicity throughout the wastewater treatment plant.

关键词： Bioremediation Toxicity Organohalide respiration Polychlorinated biphenyl(PCBs) Wastewater treatment

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Methane production from Sargassum muticum:effects of seasonality and of freshwater washes

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能源与人工环境(英文) 2021年第3期2卷 235-242页

作者： Supattra Maneein John J.Milledge Patricia J.Harvey birthe v.Nielsen Algae Biotechnology University of GreenwichChatham MaritimeME44TBUK

Biogas production from Sargassum muticum,an invasive seaweed species to Europe,is hampered by low methane(CH_(4))yields during anaerobic digestion(AD),but causes are *** research is the first to demonstrate the impact of extensive freshwater washing of spring-and summer-harvested *** on the CH_(4)production rates and the biochemical methane potential(BMP).The findings reveal that the rate profile of CH_(4)production is affected by extensively washing the seaweed and is dependent on ***-harvested *** had higher initial CH_(4)production rates compared to summer-harvested *** spring-harvested ***,the initial rate of CH_(4)production was lowered by extensive *** contrast,extensively washed summer-harvested *** had a higher degradation rate and CH_(4)production rate relative to its non-extensively washed *** highest CH_(4)potentials accumulated by the treated and non-treated *** are,however,statistically similar and not influenced by seasonality or extensive washing(p>0.05).Potential causes for differences in the rate of CH_(4)production between summer-and spring-harvested *** are *** differences in CH_(4)production from treated summer-and spring-harvested *** acts as a stepping stone to understanding the causes for low CH_(4)yields,which could allow for further enhancements in CH_(4)production from ***.

关键词： Seaweed Biogas Biofuels Seasonality Washing

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The amazing potential of fungi:50 ways we can exploit fungi industrially

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Fungal Diversity 2019年第4期97卷 1-136页

作者： Kevin D.Hyde Jianchu Xu Sylvie Rapior Rajesh Jeewon Saisamorn Lumyong Allen Grace T.Niego Pranami D.Abeywickrama Janith v.S.Aluthmuhandiram Rashika S.Brahamanage Siraprapa Brooks Amornrat Chaiyasen K.W.Thilini Chethana Putarak Chomnunti Clara Chepkirui Boontiya Chuankid Nimali I.de Silva Mingkwan Doilom Craig Faulds Eleni Gentekaki venkat Gopalan Pattana Kakumyan Dulanjalee Harishchandra Hridya Hemachandran Sinang Hongsanan Anuruddha Karunarathna Samantha C.Karunarathna Sehroon Khan Jaturong Kumla Ruvishika S.Jayawardena Jian-Kui Liu Ningguo Liu Thatsanee Luangharn Allan Patrick G.Macabeo Diana S.Marasinghe Dan Meeks Peter E.Mortimer Peter Mueller Sadia Nadir Karaba N.Nataraja Sureeporn Nontachaiyapoom Meghan O’Brien Watsana Penkhrue Chayanard Phukhamsakda Uma Shaanker Ramanan Achala R.Rathnayaka Resurreccion B.Sadaba birthe Sandargo Binu C.Samarakoon Danushka S.Tennakoon Ramamoorthy Siva Wasan Sriprom T.S.Suryanarayanan Kanaporn Sujarit Nakarin Suwannarach Thitipone Suwunwong Benjarong Thongbai Naritsada Thongklang Deping Wei S.Nuwanthika Wijesinghe Jake Winiski Jiye Yan Erandi Yasanthika Marc Stadler Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of ScienceKunming 650201YunnanPeople’s Republic of China Center of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand World Agroforestry Centre East and Central AsiaKunming 650201YunnanPeople’s Republic of China Mushroom Research Foundation 128 M.3 Ban Pa Deng T.PaPaeA.Mae TaengChiang Mai 50150Thailand Aix Marseille Université INRAUMR1163 BBF13288 Marseille Cedex 09France Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North China Center of Plant and Environment ProtectionBeijing Academy of Agriculture and Forestry SciencesBeijing 100097People’s Republic of China Center of Chemical Innovation for Sustainability Mae Fah Luang UniversityTasudMuangChiang Rai 57100Thailand Center of Excellence in Microbial Diversity and Sustainable Utilization Faculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand Center for Mountain Ecosystem Studies Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanPeople’s Republic of China Institute of Fungal Research School of Life Science and TechnologyUniversity of Electronic Science and Technology of ChinaChengdu 611731People’s Republic of China Department Microbial Drugs Helmholtz Centre for Infection Researchand German Centre for Infection Research(DZIF)partner site Hannover-BraunschweigInhoffenstrasse 738124 BrunswickGermany Department of Biology Faculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand Department of Chemistry and Biochemistry The Ohio State UniversityColumbusOH 43210USA Department of Chemistry University of Science and TechnologyBannuKhyber PakhtunkhwaPakistan Department of Crop Physiology University of Agricultural SciencesGKVKBengaluruKarnataka 560065India Department of Entomology and Plant Pathology Faculty of AgricultureChiang Mai Univers

Fungi are an understudied,biotechnologically valuable group of *** to the immense range of habitats that fungi inhabit,and the consequent need to compete against a diverse array of other fungi,bacteria,and animals,fungi have developed numerous survival *** unique attributes of fungi thus herald great promise for their application in biotechnology and ***,fungi can be grown with relative ease,making production at scale *** search for fungal biodiversity,and the construction of a living fungi collection,both have incredible economic potential in locating organisms with novel industrial uses that will lead to novel *** manuscript reviews fifty ways in which fungi can potentially be utilized as *** provide notes and examples for each potential exploitation and give examples from our own work and the work of other notable *** also provide a flow chart that can be used to convince funding bodies of the importance of fungi for biotechnological research and as potential *** have provided the world with penicillin,lovastatin,and other globally significant medicines,and they remain an untapped resource with enormous industrial potential.

关键词： Biocontrol Biodiversity Biotechnology Food Fungi Mushrooms

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