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tourmaline guiding the electric field and dechlorination pathway of 2,3-dichlorophenol by Desulfitobacterium hafniense

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Journal of Environmental Sciences 2024年第1期135卷 262-273页

作者： Yue Lu Fangyi Liang Fanzhi Qin Linrui Zhong Jianhong Jiang Qi Liu Shoujuan Zhang Ming Yan Changzheng Fan Haoran Dong College of Environmental Science and Engineering Hunan UniversityChangsha 410082China Shenzhen Research Institute Hunan UniverisyShenzhen 510082China Key Laboratory of Environment Biology and Pollution Control Hunan UniversityMinistry of EducationChangsha 410082China China Machinery International Engineering Design&Research Institute Co. Ltd.Changsha 410007China Hunan Engineering Research Center for Water Treatment Process&Equipment Changsha 410007China

The dehalogenation of organohalides has been a research hotspot in bioremediation field;however,the influence of tourmaline,a natural ore that can generate spontaneous electric field,on organohalide-respiring bacteria(OHRB)and their dechlorination process is not well known.In this study,the effect and mechanism of tourmaline on the reductive dechlorination of 2,3-dichlorophenol(2,3-DCP)by Desulfitobacterium hafniense DCB-2Twere explored.The characterization results confirmed that tourmaline had good stability and the optimal dosage of tourmaline was 2.5 g/L,which shortened the total time required for dechlorination reaction to 72 hr.Besides,tourmaline amendment also increased the proportion of 2-chlorophenol(2-CP)from 18%to 30%of end products,while that of 3-CP decreased correspondingly.The theoretical calculations showed that the bond charge of the orthosubstituted chlorine declined from-0.179 to-0.067,and that of meta-substituted chlorine increased from-0.111 to-0.129,which indicated that the spontaneous electric field of tourmaline affected the charge distribution of 2,3-DCP and was more conducive to the generation of 2-CP.Overall,tourmaline with the spontaneous electric field affected the reductive dechlorination pathway of Desulfitobacterium,and the tourmaline-OHRB combining system might serve as a novel strategy for the bioremediation of environments polluted with chlorinated phenols.

关键词： Reductive dechlorination Desulfitobacterium hafniense tourmaline Electric field 2 3-dichlorophenol

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Natural tourmaline activated peracetic acid for efficient degradation of sulfadiazine: Reaction mechanisms and catalyst reusability

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Progress in Natural Science:Materials International 2023年第4期33卷 458-466页

作者： Zhendong Chen Liuyang He Shitai Shen Desong Zhang Zhuqi Chen Li Wu Lie Yang Hubei Key Laboratory of Mineral Resources Processing and Environment School of Resources and Environmental Engineering Wuhan University of Technology School of Environmental Science and Engineering Huazhong University of Science and Technology Key Laboratory of Vegetation Ecology of the Ministry of Education School of Environment Northeast Normal University

Peracetic acid(PAA) has received extensive attention in the water treatment due to its high oxidation potential and low toxicity of by-products. In this study, natural non-toxic mineral tourmaline(TM) was used to activate PAA to remove sulfadiazine(SDZ). The TM/PAA system could remove 92 % SDZ in 120 min. The radical analysis confirmed the co-existence of both free radical and non-free radical degradation pathways in the TM/PAA system,indicating that singlet oxygen(1O2) and acetyl(per)oxy radicals(CH3C(O)O· and CH3C(O)OO·) were the main reactive oxygen species. The Fe2+/Fe3+ratio on the TM surface decreased during the degradation of SDZ due to Fe2+consumption. The effect of water matrix on SDZ removal indicated that Cl-, SO42-and NO3-posed little effect on SDZ removal, while CO32-inhibited SDZ removal by affecting pH. Particularly, humic acid(HA) slightly promoted SDZ removal. Ten by-products of SDZ were identified by HPLC-MS/MS, and four possible transformation pathways(SO2detachment, S–N breakage, amino acid oxidation, and hydroxylation) were proposed.TM was recycled five times and the removal of SDZ remained above 85 %, confirming its excellent reusability.This work indicates the TM/PAA system is of great potential for the application on the organic contaminant removal.

关键词： Organic radicals Peracetic acid Singlet oxygen tourmaline

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Geochemical and Boron Isotopic Evidence that tourmaline Records Country Rock Assimilation of Leucogranites in the Himalayan Orogen

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Acta Geologica Sinica(English Edition) 2022年第1期96卷 123-134页

作者： HU Guyue GAO Li’e ZENG Lingsen LI Yike MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China MNR Key Laboratory of Deep-Earth Dynamics Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China

tourmaline geochemical and boron(B)isotopic compositions in two-mica granites(TMG),tourmaline-bearing leucogranites(Tou-LG),tourmalites and metapelites from the Gyirong-Malashan areas of the Himalayan orogen provide evidence for country rock assimilation during the intrusion of Himalayan leucogranite.The schorls in Gyirong leucogranitic plutons show low contents of MgO(0.238%-1.160%)and δ^(11)B values(-12.1‰--11.2‰),while dravites gathered in the contact zone between the leucogranitic veins and metapelites show high contents of MgO(4.815%-6.755%)and δ^(11)B values(-10.7‰--9.3‰).This geochemical and isotopic variation of tourmalines can also be identified in the Malashan gneiss dome.As a result,three types of tourmaline were identified in the Himalayan orogen:(1)Tou-Ⅰ in the TMG and Tou-LG,which is the most common tourmaline type of schorl;(2)Tou-Ⅱ(dravite and high-Mg schorl)in the Tou-LG and tourmalite at the margins of the leucogranite;and(3)Tou-Ⅲ(mainly dravite,with minor high-Mg schorl)in metapelites of the High Himalayan Crystalline Sequence.The lenses and veins of Tou-LG may have experienced metasomatism and assimilation as a result of interaction with the High Himalayan Crystalline Sequence metasedimentary country rocks,which can be traced by the geochemical and isotopic characteristics of the tourmaline therein.

关键词： boron isotope tourmaline granite country rock assimilation Himalayan orogen

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tourmaline geochemistry and boron isotopic variations as a guide to fluid evolution in the Qiman Tagh W-Sn belt, East Kunlun, China

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Geoscience Frontiers 2019年第2期10卷 569-580页

作者： Zhen Zheng Yanjing Chen Xiaohua Deng Suwei Yue Hongjin Chen Qingfei Wang State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences (Beijing) State Key Laboratory for Mineral Deposits Research Department of Earth SciencesNanjing University Key Laboratory of Orogen and Crust Evolution Peking University Beijing Institute of Geology for Mineral Resources Guangzhou College South China University of Technology

The Qiman Tagh W-Sn belt lies in the westernmost section of the East Kunlun Orogen, NW China, and is associated with early Paleozoic monzogranites, tourmaline is present throughout this belt. In this paper we report chemical and boron isotopic compositions of tourmaline from wall rocks, monzogranites, and quartz veins within the belt, for studying the evolution of ore-forming fluids. tourmaline crystals hosted in the monzogranite and wall rocks belong to the alkali group, while those hosted in quartz veins belong to both the alkali and X-site vacancy groups. tourmaline in the walk rocks lies within the schorl-dravite series and becomes increasingly schorlitic in the monzogranite and quartz veins. Detrital tourmaline in the wall rocks is commonly both optically and chemically zoned,with cores being enriched in Mg compared with the rims. In the Al-Fe-Mg and Ca-Fe-Mg diagrams,tourmaline from the wall rocks plots in the fields of Al-saturated and Ca-poor metapelite, and extends into the field of Li-poor granites, while those from the monzogranite and quartz veins lie within the field of Li-poor granites. Compositional substitution is best represented by the MgFe_(-1), Al(NaR)_(-1), and AlO(Fe(OH))_(-1) exchange vectors. A wider range of δ^(11)B values from -11.1‰ to -7.1‰ is observed in the wall-rock tourmaline crystals, the B isotopic values combining with elemental diagrams indicate a source of metasediments without marine evaporates for the wall rocks in the Qiman Tagh belt. The δ^(11)B values of monzogranite-hosted tourmaline range from -10.7‰ and-9.2‰, corresponding to the continental crust sediments, and indicate a possible connection between the wall rocks and the monzogranite. The overlap in δ^(11)B values between wall rocks and monzogranite implies that a transfer of δ^(11)B values by anataxis with little isotopic fractionation between tourmaline and melts. tourmaline crystals from quartz veins have δ^(11)B values between -11.0‰ and-9.6‰, combining with the elemental diagrams and geological features, thus in

关键词： tourmaline Chemical composition Boron isotope Qiman Tagh W-Sn belt Fluid evolution

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Adsorption characteristics of copper,lead,zinc and cadmium ions by tourmaline

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Journal of Environmental Sciences 2006年第6期18卷 1221-1225页

作者： JIANG Kan SUN Tie-heng SUN Li-na LI Hai-bo School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China Key Laboratory of Environmental Engineering of Shenyang University Shenyang 110041 China

The adsorption characteristics of heavy metals： Cu（Ⅱ）, Pb（Ⅱ）, Zn（Ⅱ） and Cd（Ⅱ） ions on tourmaline were studied. Adsorption equilibrium was established. The adsorption isotherms of all the four metal ions followed well Langmuir equation. tourmaline was found to remove heavy metal ions efficiently from aqueous solution with selectivity in the order of Pb（Ⅱ）〉Cu（Ⅱ）〉Cd（Ⅱ）〉Zn（Ⅱ）. The adsorption of metal ions by tourmaline increased with the initial concentration of metal ions increasing in the medium. tourmaline could also increase pH value of metal solution.The maximum heavy metal ions adsorbed by tourmaline was found to be 78.86, 154.08, 67.25, and 66.67 mg/g for Cu（Ⅱ）, Pb（U）, Zn（Ⅱ） and Cd（U）, respectively. The temperature （25-55℃） had a small effect on the adsorption capacity of tourmaline. Competitive adsorption of Cu（Ⅱ）, Pb（Ⅱ）, Zn（Ⅱ） and Cd（Ⅱ） ions was also studied. The adsorption capacity of tourmaline for single metal decreased in the order of Pb〉Cu〉Zn 〉Cd and inhibition dominance observed in two metal systems was Pb〉Cu, Pb〉Zn, Pb〉Cd, Cu〉Zn, Cu〉Cd, and Cd〉Zn.

关键词： adsorption heavy metals Langmuir isotherm tourmaline

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Effects of tourmaline on nitrogen removal performance and biofilm structures in the sequencing batch biofilm reactor

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Journal of Environmental Sciences 2018年第5期30卷 127-135页

作者： Chong Tan Haoran Xu Di Cui Jinlong Zuo Junsheng Li Yubin Ji Shan Qiu Lin Yao Ying Chen Yingjie Liu Research Center on Life Sciences and Environmental Sciences Harbin University of Commerce School of Municipal and Environmental Engineering Harbin Institute of Technology Key Laboratory of Molecular and Cytogenetics and Genetic Breeding of Heilongjiang Province Harbin Normal University

The effects of tourmaline on nitrogen removal performance and biofilm structures were comparatively investigated in two identical laboratory-scale sequencing batch biofilm reactors（SBBRs）（denoted SBBR1 and SBBR2） at different nitrogen loading rates（NLRs） varying from（0.24 ± 0.01） to（1.26 ± 0.02） g N/（L·day）. SBBR1 was operated in parallel with SBBR2, but SBBR1 was filled with polyurethane foam loaded tourmaline（TPU） carriers and another（SBBR2） filled with polyurethane foam（PU） carriers. Results obtained from this study showed that the excellent and stable performance of SBBR1 was obtained. Ammonia nitrogen removal and total nitrogen removal were higher in SBBR1 than that in SBBR2 with increase of NLR. At an NLR of（0.24 ± 0.01） g N/（L·day）, the majority of the spherical and elliptical bacteria were surrounded by the extracellular polymeric substance（EPS） and bacillus or filamentous bacteria in two SBBRs biofilms. When NLR increased to（1.26 ± 0.02） g N/（L·day）, the clusters were more obvious in the SBBR1 biofilm than that in the SBBR2 biofilm. Bacteria in SBBR1 were inclined to synthesis more EPS, and the formed EPS could protect the bacteria from free ammonia（FA） under extreme condition NLR（1.26 ± 0.02） g N/（L·day）. The results of polymerase chain reaction-denaturing gradient gel electrophoresis analysis showed that the microbial community similarity in SBBR2 decreased more obviously than that in SBBR1 with the increase of NLR, which the microbial community in SBBR1 was relatively stable.

关键词： tourmaline Nitrogen removal performance Biofilm structures Population dynamics Sequencing batch biofilmreactor （SBBR）

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tourmaline from the Archean G.R.Halli gold deposit,Chitradurga greenstone belt,Dharwar craton(India):Implications for the gold metallogeny

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Geoscience Frontiers 2014年第6期5卷 877-892页

作者： Susmita Gupta M.Jayananda Fareeduddin Geological Survey of India (GSI) NERGuwahatiAssam 781 005India Department of Geology Centre of Advanced StudiesUniversity of DelhiDelhi 110 007India Geochronology and Isotope Geology Division Central HeadquarterGSIKolkata 700 016India

tourmaline occurs as a minor but important mineral in the alteration zc,ne of the Archean orogenic gold deposit of Guddadarangavanahalli （G.R.Halli） in the Chitradurga greenst^ne belt of the western Dharwar craton, southern India. It occurs in the distal alteration halo of the G.R.Halli golcl deposit as （a） clusters of very fine grained aggregates which form a minor constituent in the natrix of the altered metabasalt （AMB tourmaline） and （b） in quartz-carbonate veins （vein tourmaline）. ~[＇he vein tourmaline, based upon the association of specific carbonate minerals, is further grouped as （i） albite-tourmaline-ankerite-quartz veins （vein-1 tourmaline） and （ii） albite-tourmaline-calcite-quartz veins （vein-2 tourmaline）. Both the AMB tourmaline and the vein tourmalines （vein-I and vein-2） belong to the alkali group and are clas- sified under schorl-dravite series. tourmalines occurring in the veins are zoned while the AMB tour- malines are unzoned. Mineral chemistry and discrimination diagrams 1eveal that cores and rims of the vein tourmalines are distinctly different. Core composition of the ve：n tourmalines is similar to the composition of the AMB tourmaline. The formation of the AMB tourmaline and cores of the vein tour- malines are proposed to be related to the regional D1 deformational event associated with the emplacement of the adjoining ca. 2.61 Ga Chitradurga granite whilst rims of the vein tourmalines vis-a- vis gold mineralization is spatially linked to the juvenile magmatic accretion （2.56-2.50 Ga） east of the studied area in the western part of the eastern Dharwar craton.

关键词： tourmaline G.R.HalIi Orogenic gold deposit Dharwar craton Archean

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Polar Mineral tourmaline and Its Effect on the Photocatalysis of Nano-TiO2

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稀有金属材料与工程 2004年第Z1期33卷 305-308页

作者： Ji Zhijiang Zhang Liansong Wang Xiaoyan Wang Jing Wang Jimei Institute of Environmental Engineering China Building Material Academy Beijing 100024China Institute of Environmental Engineering China Building Material Academy Beijing 100024China Institute of Environmental Engineering China Building Material Academy Beijing 100024China Institute of Environmental Engineering China Building Material Academy Beijing 100024China Institute of Environmental Engineering China Building Material Academy Beijing 100024China

The mechanism for tourmaline powder improving the photocatalysis effect of nano-TiO2 was studied by electron-spin resonance (ESR). It is found that the intensity of the signal of hydroxyl free radical produced by the mixture of the tourmaline and nano-TiO2 through 355nm wavelength ultraviolet radiating is increased. Under natural light, the mixture of nano TiO2 and tourmaline powder in a certain weight ratio can improve the effect of decomposing methyl orange that proved that the ESR result was right. The tourmaline particle could promote the photocatalysis of nano-TiO2. This result may be due to the surface electric field of the tourmaline, which can absorb the particle of nano-TiO2 and make the electron inspired by photon transfer from the inner of nano-TiO2 particle to its surface, and even make the electron transfer into tourmaline particle.

关键词： tourmaline powder nano-TiO2 hydroxyl free radical

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Chemical and boron isotopic compositions of tourmaline in the Longtoushan hydrothermal gold deposit, Guangxi, China:implications for gold mineralization

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Acta Geochimica 2019年第2期38卷 277-291页

作者： Lihua Qian Jianqing Lai Shugen Zhang Lifang Hu Rong Cao Shilong Tao Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of Education School of Geosciences and Info-Physics Central South University

The Longtoushan hydrothermal gold deposit is located in the southwestern region of the Dayaoshan Uplift.tourmaline is widespread in the Longtoushan gold deposit and is mainly distributed in the rhyolite porphyry and associated cryptoexplosive breccia. The spatial distribution of tourmaline enrichment is similar to that of the gold orebody. Feldspar has been largely replaced by tourmaline in the rhyolite porphyry and cryptoexplosive breccia.Electron microprobe analysis revealed that tourmalines in the Longtoushan deposit belong mainly to the alkali group and partly to the X-vacant group; they mostly fell in the schorl-dravite series field. Two distinct sets of dominant substitutions were observed: MgFe_(-1) and Al□(NaR2+)-1,where R = Fe, Mg. In addition, minor substitutions include(CaMg)(NaAl)_(-1) and FeAl_(-1). The calculated d11 B value for the mineralizing fluids ranged from-12.8 to-9.7%,which is typical of S-type granites, and boron-enriched fluids predominantly derived from rhyolitic melt. Part of the tourmaline from the rhyolite porphyry crystallized during the magmatic-hydrothermal stage, whereas most tourmalines from the deposit formed in the post-magmatic hydrothermal stage. The tourmalines were deposited from a relatively reduced and acidic fluid system, and the gold predominantly precipitated during the post-magmatic hydrothermal stage in the Longtoushan deposit.

关键词： Longtoushan gold deposit tourmaline Oreforming fluids Boron isotopes

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Correlation between intrinsic dipole moment and pyroelectric coefficient of Fe-Mg tourmaline

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International Journal of Minerals,Metallurgy and Materials 2014年第2期21卷 105-112页

作者： Chang-chun Zhao Li-bing Liao Jie Xing School of Science China University of Geosciences School of Materials Science and Technology China University of Geosciences

Single-crystal X-ray diffraction structural data of four Fe-Mg tourmalines with different Fe contents from Xinjiang, Sichuan, and Yunnan Provinces, China, were collected at room temperature and-100oC. The intrinsic dipole moments of polyhedra and the total intrinsic dipole moment of the unit cell were calculated. By comparing the intrinsic electric dipole moments of the X, Y, Z, T, and B site polyhedra, it is found that the T site polyhedron makes the greatest contribution to the total intrinsic dipole moment. The pyroelectric coefficients of four Fe-Mg tourmalines were experimentally determined, and the influence of intrinsic dipole moments on their pyroelectric properties was inves-tigated. The experimental results show that, compared with the case at room temperature, the intrinsic dipole moments change with the total Fe content at-100oC in a completely different way. With the decrease of temperature, the total intrinsic dipole moments of tourmaline de-crease. Over the same temperature interval, the pyroelectric coefficients increase with the increase in intrinsic dipole moment.

关键词： tourmaline pyroelectricity dipole moment polyhedra

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