生物矿石颗粒浸矿方法研究
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摘要
真菌具有生长速率快、生物量大、适应性强、发酵产生有机酸等特点,可应用于低品位矿石及尾矿中有价金属的提取.根据真菌浸矿过程中,真菌菌丝可以包裹矿石形成多个以矿石颗粒为内核,真菌菌丝为外壳的核-壳结构的生物矿石颗粒的特征,提出了生物矿石颗粒浸矿新方法.介绍了生物矿石颗粒浸矿方法的原理,及其在铜尾砂和铀矿石浸出中的应用.
Fungi were used to extract valuable metals from low-grade ore and tailings because of the fungal characteristics of fast growth speed,high biomass,strong adaptive ability,production of organic acids during fermentation,and so on.A new method of bio-ore pellets for mineral leaching was proposed,according to the characteristics that,the mycelia can encase the ore to form a plurality of bio-ore pellets,in which ore particles as core will be wrapped by a porous webbed mycelial layer.The principle of bio-ore pellets leaching method and its application in copper tailings and uranium ore leaching are introduced.
Fungi were used to extract valuable metals from low-grade ore and tailings because of the fungal characteristics of fast growth speed,high biomass,strong adaptive ability,production of organic acids during fermentation,and so on.A new method of bio-ore pellets for mineral leaching was proposed,according to the characteristics that,the mycelia can encase the ore to form a plurality of bio-ore pellets,in which ore particles as core will be wrapped by a porous webbed mycelial layer.The principle of bio-ore pellets leaching method and its application in copper tailings and uranium ore leaching are introduced.
引文
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[3]REWERSKI B,MIELNICKI S,BARTOSIEWICZ I,et al.Uranium post-mining wastes as a potential reservesource of uranium for nuclear energy plants[J].Physicochemical problems of mineral processing,2013,49(1):5-11.
[4]JENA P K,MISHRA C S K,BEHERA D K,et al.Dissolution of heavy metals from electrostatic precipitator(ESP)dust of a coal based sponge iron plant by fungal leaching[J].African journal of environmental science and technology,2012,6(4):208-213.
[5]SABRA N,DUBOURGUIER H C,HAMIEH T.Fungal leaching of heavy metals from sediments dredged from the De0le Canal,France[J].Advances in chemical engineering&science,2012,2(1):1-8.
[6]LIU Q,YANG H Y,TONG L L,et al.Fungal degradation of elementalcarbon in carbonaceous gold ore[J].Hydrome tallurgy,2016,160(2):90-97.
[7]WANG Y D,LI G Y,DING D X,et al.Column leaching of uranium ore with fungal metabolic products and uranium recovery by ion exchange[J].Journal of radioanalytical and nuclear chemistry,2015,304(3):1139-1144.
[8]HOREH N B,MOUSAVI S M,SHOJAOSADATI S A.Bioleaching of valuable metals from spent lithiumion mobile phone batteries using Aspergillus niger[J].Journal of power sources,2016,320:257-266.
[9]GHOSH S,PAUL A K.Bioleaching of nickel by Aspergillus humicola SKP102 isolated from indian lateritic overburden[J].Journal of sustainable mining,2016,15(3):108-114.
[10]VAKILCHAP F,MOUSAVI S M,SHOJAOSADATI S A.Role of Aspergillus niger in recovery enhancement of valuable metals from produced red mud in bayer process[J].Bioresource technology,2016,218:991-998.
[11]王永东.浸铀异养微生物的筛选及黑曲霉浸铀机理研究[D].衡阳:南华大学,2014.
[12]魏松坡,贾黎明.外生菌根真菌对矿物风化作用研究进展[J].生态学杂志,2014,33(12):3447-3454.
[13]LI Z B,LIU L W,CHEN J,et al.Cellular dissolution at hypha-and spore-mineral interfaces revealing unrecognized mechanisms and scales of fungal weathering[J].Geology,2016,44(4):319-322.
[14]黄勋娟,刁宁宁,张建国.黑曲霉菌丝球的形成及应用研究综述[J].食品与发酵工业,2014,40(11):171-176.
[15]乔双逵,彭林,丁重阳,等.液体发酵条件对灵芝菌体形态及胞外多糖活性的影响[J].食品与生物技术学报,2014,33(10):1070-1076.
[16]DANIELA Q,TIMO H,KIM H,et al.Fungal morphology in industrial enzyme production-modelling and monitoring[J].Advance biochemical engineering biotechnology,2015,149:29-54.
[17]熊强,徐晴,顾帅,等.丝状真菌形态控制及其在发酵过程优化中的应用[J].生物工程学报,2012,28(2):178-190.
[18]LUKAS V,VIGNESH R,CHRISTOPH H.The filamentous fungal pellet-relationship between morphology and productivity[J].Applied microbiology and biotechnology,2018,102(7):2997-3006.
[19]牛坤,毛健,郑裕国.无机微粒添加对丝状微生物发酵过程的影响[J].微生物学报,2015,55(3):258-263.
[20]朱虹.菌丝球形成过程及其影响因素的研究[D].哈尔滨:哈尔滨工业大学,2007.
[21]刁宁宁.黑曲霉浸出高碱性氧化铜尾和研究[D].衡阳:南华大学,2015.
[22]雷德柱,于淑娟.灰树花深层发酵过程中菌丝球形态结构的研究[J].食用菌学报,2003,10(1):6-11.