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| 1 | Roles of soluble minerals in Cd sorption onto rice straw biochar显示文摘Transforming to biochar provides an environmentally friendly approach for crop residue reutilization,which are usually applied as sorbent for heavy metal removal.As typical siliconrich material,the specific sorptive mechanisms of rice straw derived biochar(RSBC)are concerned,especially at the low concentration range which is more environmentally relevant.In the present study,Cd sorption onto RSBCs at the concentration of ≤5 mg/L was investigated.The sorptive capacity was positively correlated with the pyrolytic temperature of the biochar and the environmental pH value.Water soluble minerals of the RSBCs played the dominant roles in Cd sorption,contributing 29.2%,62.5%and 82.9%of the total sorption for RSBCs derived under 300℃,500℃and 700℃,respectively.Increased number of cations,dominantly K^(+),were exchanged during the sorption.Coprecipitation with cations and carbonates may also be contributive to the sorption.The dissolution of silicon-containing minerals was found to be declined during sorption,suggesting its involvement in the sorption process,possibly through precipitation.Whilst,the sparingly soluble silicate crystals may impose ignorable role in the sorption.Complexation with organic groups is only a minor mechanism in Cd sorption,compared to the much more dominant roles of the inorganic ashes. | Ying-heng Fei Zuannan Zhang Zhuofeng Ye Qihang Wu Ye-tao Tang Tangfu Xiao | 2022 | Journal of Environmental Sciences2022，34，3： | 4 |
| 2 | Groundwater-rolated thallium transfer processes and their impacts on the ecosystem: Southwest Guizhou Province, China 显示文摘 | Xiao Tangfu Boyle D Guha J Rouleau A Hong Yetang Zheng Baoshan | 2003 | Appl Geochem2003，18，5： | 1 |
| 3 | Groundwater-related thallium transfer processes and their impacts on the ecosystem: Southwest Guizhou Province, China 显示文摘 | Xiao Tangfu Boyle D Guha J Rouleau A Hang Yetang Zheng Baoshan | 2003 | Appl Geochem2003，18，5： | 1 |
| 4 | Naturally occurring thallium:A hidden geoenvironmental health hazard?显示文摘 | Xiao Tangfu Guha J | 2004 | Environment International2004，30，： | 1 |
| 5 | Groundwater-related thallium transfer processes and their impacts on the ecosystem: southwest Guizhou Province, China显示文摘 | Xiao Tangfu Dan Boyle Jayanta Guha Alain Rouleau Hong Yetang Zheng Baoshan | 2003 | Applied Geochemistry2003，，18： | 1 |
| 6 | Geochemistry and environmental effect of cadmium in the super-large Jinding Pb-Zn deposit,Yunnan Province, China显示文摘The Jinding Pb-Zn deposit in Yunnan Province is the representative of a Cd-enriched area and mining activities lead to the release of Cd into the hypergenic ecosystem, resulting in Cd pollution. The concentrations of Cd vary greatly from one type to another type of rocks in the mining district. In the host rock, Cd concentrations range from 50×10-6 to 650×10-6 with an average of 310×10-6. In primary ores, Cd concentrations range from 14×10-6 to 2800×10-6 with an average of 767×10-6. However, in oxidized ores, Cd concentrations are highest, varying within the range of 110×10-6 to 8200×10-6 , averaging 1661×10-6. It is shown that the oxidized ores are the main carrier and environmental source of Cd. Leaching test showed that Pb/Zn ores are easy to oxidize and thereafter release Cd and other harmful elements. These leached elements in the leachate may be precipitated rapidly in the order of Zn>Pb>Cd. As for the concentration distribution of Cd in the Bijiang River, it is estimated to be 15.7 μg/L Cd in water, 49.3 mg/L in suspended substances, and 203.7 mg/L in sediments. The average value of Cd in soil from the polluted area is 83.0 mg/kg. Natural weathering of Cd-rich rocks and minerals imposes a potential environmental risk on the aquatic ecosystem of the Bijiang catchment. | LI Hang LI Dahua XIAO Tangfu HE Libin NING Zengping SUN Jialong ZHU Changsheng SHUANG Yan | 2008 | Chinese Journal Of Geochemistry2008，27，1： | 1 |
| 7 | Geochemical distribution, fractionation, and sources of heavy metals in dammed-river sediments: the Longjiang River, Southern China显示文摘In the present study, six sediment cores were collected from six river-dammed reservoirs to reveal the geochemical distribution of heavy metals(As, Cd, Pb, Sb,and Zn) in the Longjiang River, South China, which is highly impacted by nonferrous metal mining and smelting activities. The sediments were geochemically characterized, combining geochemical analysis, sequential extractions, and210 Pb chronology. The results indicated that the river sediments were severely polluted by heavy metals in the order of Cd [ Zn & Pb & Sb [ As. These heavy metals generally exhibited relatively low enrichment in the upstream sediments because of the limited anthropogenic impact, but their abundances drastically increased in the midstream sediments due to local smelting activities. In downstream sediments, the heavy metal concentrations(except for Cd) decreased, owing to the effect of dam interception and detrital inputs. Cadmium levels tended to increase in downstream sediments, which were attributed to the intensive discharge of Cd during the pollution event in 2012. The sedimentary records were traced back to1985, and a significant decrease of heavy metal enrichments could be found after the year 2000, suggesting the enhancement of environmental management in this period.The statistical results indicated that local metal smelting and mining activities were the main anthropogenic contributors for the enrichment of heavy metals in the dammed-river sediments. High enrichment factor and nonresidual fractions of heavy metals in local sediments may pose a direct threat to aquatic organisms. Cd presents significant danger because of its extreme enrichment and high labile fractions. | Xiaolong Lan Zengping Ning Yizhang Liu Qingxiang Xiao Haiyan Chen Enzong Xiao Tangfu Xiao | 2019 | Acta Geochimica2019，38，2： | 1 |
| 8 | Enrichment and mobility of cadmium and other heavy metals in the area of the Three-Gorges Reservoir显示文摘 | Jiang TANG Yong LI Jiali LEI Shijie WANG Tangfu XIAO | 2006 | Chinese Journal Of Geochemistry2006，25，B08： | 1 |
| 9 | Medical geology of arsenic, selenium and thallium in China 显示文摘 | Li Shehong Xiao Tangfu Zheng Baoshan | 2012 | Sci Total Environ2012，42，： | 1 |
| 10 | Zero-valent manganese nanoparticles coupled with different strong oxidants for thallium removal from wastewater显示文摘Nano zero-valent manganese(nZVMn,Mn^0)was prepared through a borohydride reduction method and coupled with different oxidants(persulfate(S2O8^2-),hypochlorite(CIO^-),or hydrogen peroxide(H2O2))to remove thallium(TI)from wastewater.The surface of Mn°was readily oxidized to form a core-shell composite(MnOx@Mn°),which consists of Mn°as the inner core and MnOr(MnO,M112O3,and Mn3O4)as the outer layer.When Mn^0 was added alone,effective T1(I)removal was achieved at high pH levels(>12).The Mn-H2O2 system was only effective in T1(I)removal at high pH(>12),while the Mn^0-S2O8^0or Mn0-ClO^-system had excellent T1(I)removal(>96%)over a broad pH range(4-12).The Mn-S2O8 oxidation system provided the best resistance to interference from an external organic matrix.The isotherm of T1(I)removal through the Mn°-S2O8^2-system followed the Freundlich model.The Mn°nanomaterials can activate persulfate to produce sulfate radicals and hydroxyl radicals.Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy suggested that oxidation-induced precipitation,surface adsorption,and electrostatic attraction are the main mechanisms for T1(I)removal resulting from the combination of Mn^0 and oxidants.Mn^0coupled with S2O8^2-/ClO^-is a novel and effective technique for T1(I)removal,and its application in other fields is worthy of further investigation. | Keke Li Huosheng Li Tangfu Xiao Gaosheng Zhang Aiping Liang Ping Zhang Lianhua Lin Zexin Chen Xinyu Cao Jianyou Long | 2020 | Frontiers of Environmental Science & Engineering2020，14，2： | 1 |
| 11 | Groudwater-related thallium transfer processes and their impacts on the ecosystem:Southwest Guizhou Province,China显示文摘 | Dan Boyle Jayanta Guha | 2003 | Applied Geochemistry2003，18，： | 1 |
| 12 | Naturally occurring thallium: a hidden geoenvironmental health hazard显示文摘 | Tangfu Xiao Jayanta Guha Dan Boyle | 2004 | Environment lnternathgnal2004，30，： | 1 |
| 13 | Environmental concerns related to high thallium levels in soils and thallium uptake plants in southwest Gui zhou,China显示文摘 | Tangfu Xiao Jayanta Guha Dan Boyle | 2004 | The Science of the Total Environment2004，318，： | 1 |
| 14 | Groundwater-related thallium transfer processes and their impacts on the ecosystem:southwest Guizhou Province,China显示文摘 | Xiao Tangfu Boyle D Guha J | 2003 | Applied Geochemistry2003，18，： | 1 |
| 15 | Naturally occurring thallium: A hidden geoenvironmental health hazard? 显示文摘 | Xiao Tangfu Guha J Boyle D Liu Cong-Qiang Zheng Baoshan Wilson G C Rouleau A Chen Jingan | 2004 | Environ Int2004，30，4： | 1 |
| 16 | Mercury contaminations from historic mining to water, soil and vegetation in Lanmuchang, Guizhou, southwestern China显示文摘 | Guangle Qiu Xinbin Feng Shaofeng Wang Tangfu Xiao | 2005 | Science of the Total Environment2005，，1： | 1 |
| 17 | Naturally occurring thallium:a hidden geoenvironmental health hazard?显示文摘 | Xiao Tangfu Guha J Boyle D | 2004 | Environment International2004，30，4： | 1 |
| 18 | Mercury emission to atmosphere from Lanmuchang Hg–Tl mining area, Southwestern Guizhou, China显示文摘 | Shaofeng Wang Xinbin Feng Guangle Qiu Zhongqing Wei Tangfu Xiao | 2005 | Atmospheric Environment2005，，39： | 1 |
| 19 | Medical geology of arsenic, selenium and thallium in China显示文摘 | Shehong Li Tangfu Xiao Baoshan Zheng | 2011 | Science of the Total Environment2011，，： | 1 |
| 20 | High thallium content in rocks associated with Au-As-Hg-Tl and coal mineralization and its adverse environmental potential in SW Guizhou,China显示文摘 | Xiao Tangfu Guha Jayanta Boyle Dan | 2004 | Geochemistry:Exploration Environment Analysis2004，4，3： | 1 |
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