84 ( 自然科学版 ) 40 rrna 15 Acidithiobacillus ferrooxidans 11 DBS ph Fe 2 + Fe 3 + SDS CTAB SDS CTAB SDS mg /L Fe % CTAB 5 mg

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1 ( 自然科学版 ) Journal of South China University of Technology Vol 40 No Natural Science Edition October X * 金属硫化物矿区尾矿的自然风化可产生大量含重金属和硫酸根离子的酸性矿山废水, 造成矿区及下游水体和土壤的严重污染文中介绍了笔者及其团队的相关研究工作 : 基于矿山尾矿的化学及微生物氧化机理, 开发了缓释杀菌剂以抑制微生物氧化, 并制备出以三乙烯四胺二硫代氨基甲酸钠为代表的尾矿钝化剂, 隔断尾矿与空气水和微生物的接触, 抑制尾矿的氧化, 实现从源头上控制重金属和硫酸根离子的释放 ; 针对矿区重金属和硫酸根离子主要通过水体迁移造成周围环境污染的现状, 开发了利用改性玉米秸秆花生壳稻草等吸附材料去除重金属和硫酸根离子的技术, 并通过硫酸盐还原菌在改性吸附材料上的固定化构建了能同时去除重金属和硫酸根的生化功能材料此外, 还开发了利用经济作物玉米来修复污染土壤的边生产 - 边修复技术, 实现了农业生产与土壤修复的同时进行金属硫化物矿区 ; 重金属 ; 硫酸根 ; 源头控制 ; 修复技术 P59; X131 doi: /j issn X AMD 4 1 矿山尾矿的微生物氧化及抑制技术 AMD AMD 1 AMD 80% DBS-8 AMD DNA 16S * ZX chzdang@ scut edu cn lutao@ scut edu cn

代氨基甲酸钠为代表的尾矿钝化剂, 隔断尾矿与空气水和微生物的接触, 抑制尾矿的氧化, 实现从源头上控制重金属和硫酸根离子的释放 ; 针对矿区重金属和硫酸根离子主要通过水体迁移造成周围环境污染的现状, 开发了利用改性玉

2 84 ( 自然科学版 ) 40 rrna 15 Acidithiobacillus ferrooxidans 11 DBS ph Fe 2 + Fe 3 + SDS CTAB SDS CTAB SDS mg /L Fe % CTAB 5 mg /L Fe % CTAB SDS 10 mg /L 30 mg 12 ph Eh 7% 13 1 ~ 2 mm SDS 30 d Fe 84 4% 黄铁矿的化学及微生物氧化机理 3 尾矿钝化剂的筛选及钝化机理 TETA H 2 O 2 FeCl 3 TETA H 2 O 2 O 2 Fe TETA Fe TETA Fe 3 + FeS n Fe 1 - x S 2 73% ~ 79% TE- TA 4 19 Fe 3 + TETA Fe 3 + DTC-TETA Fe 3 + DDTC 25 Fe 3 +

4% 14 3 1 2 黄铁矿的化学及微生物氧化机理 3 尾矿钝化剂的筛选及钝化机理 TETA H 2 O 2 FeCl 3 TETA H 2 O 2 O 2 Fe 3 + 2 1

3 10 85 Cu 2 + DTC-TETA DDTC ph = 3 ph = 6 Pb 2 + Cd ph Langmuir DTC-TETA ph mg /g DDTC 99 1% Cu 2 + Pb 2 + Cd % DTC-TETA Cu 2 + Pb 2 + ph = 3 ph =6 DTC-TETA Cu 2 + > Pb 2 + > Cd 2 + Pb 2 + > Cu 2 + > Cu Zn Cd Pb Fe 95% N O EDTA DTC-TETA 改性花生壳吸附去除重金属 Cu 2 + DTC-TETA Cu 2 + Cu 2 + Pb 2 + Cd h Pb 2 + Cd 2 + ph Pb mg /gcd 2 + TETA mg /g TETA Pb 2 + > Cd AMD 4 Tafel TETA 硫酸盐还原菌的筛选及其性能 1% 5% SRBA 42 1% 81 0% Tafel 16S rdna TETA Desulfovibrio TETA ~ 4 5 g /L g /L 4d 4 4 AMD 污染的控制技术 Cd 2 + CN OH 90% 改性稻草吸附去除 4 10% AMD 4 29 FT-IR SEM EDX XRD 13 C-NMR AMD meq /g 4 AMD AMD 改性玉米秸秆吸附去除重金属 4

+ 20 104 75 mg /gcd 2 + TETA 43 11 mg /g TETA Pb 2 + > Cd 2 + 27 4 2 AMD 4 Tafel TETA 4 2 1 硫酸盐还原菌的筛选及其性能 1% 5% SRBA 42 1% 81 0% Tafel 16S rdna TETA Desulfovibrio TETA 4 1 0 ~ 4 5 g /L

4 86 ( 自然科学版 ) 40 4 > CrO 2-4 > NO - 3 > PO 3-4 / AMD Cd 2 + SRBA H 2 S SRBA Cd 2 + H 2 S Cd 2 + H 2 S EPS H 2 S NTA SO 2-4 H 2 S Cd mg /kg a b SRBA c 65 32% SRBA 54 95% 62 57% mg /kg SEM mg /kg 4 - SRBA mg /kg 矿区重金属污染土壤的生物修复技术 200 mg /L 75 mg /L Cd 2 + Cr 3 + Pb 2 + Mn RC Cd 2 + OH NH CO CO NH Cr 3 + Pb 2 + Mn 2 + RC Cd Cr 3 + RC Cd 2 + RC Cr 3 + Pb 2 + Mn 2 + Cd Zea mays cv CT Cu Zn CT38 Cd Pb 16S rdna V3 EDTA NTA RC 16S rdna RC Bacillus cereus DGGE EDDS IAA GA DNA

属污染土壤的生物修复技术 200 mg /L 75 mg /L Cd 2 + Cr 3 + Pb 2 + Mn 2 + 4 RC Cd 2 + OH NH CO CO NH Cr 3 + Pb 2 + Mn 2 + RC Cd 2 + 5 1 Cr 3 + RC Cd 2 +

5 10 87 J 2002 CT Liu Yu-rong Dang Zhi Shang Ai-an et al Comparing several extractants for extracting bioavailable part of heavy metals in soils J Soils and Environmental Sciences J 6 结语 Dang Zhi Liu Cong-qiang Li Zhong Discussion about ac- curacy of assessment method of chemical mobility of heavy metals J Chongqing Environmental Science J Cai Mei-fang Dang Zhi Wen Zhen et al Risk assessment of heavy metals contamination of soils around mining area J Ecology and Environment AMD 8 4 J Zhou Jian-min Dang Zhi Situ Yue et al Distribution and characteristics of heavy metals contaminations in soils from Dabaoshan mine area J Journal of Agro-Environmental Science J 1 Zhou J M Dang Z Cai M F et al Soil heavy metal pollution around the Dabaoshan Mine Guangdong Province China J Pedosphere Environmental Sciences J J Dang Zhi Liu Cong-qiang Li Zhong Experimental simulation of chemical activity of heavy metals in coal gangue J Journal of South China University of Technology Natural Science Edition Dang Z Liu C Q Haigh M J Mobility of heavy metals associated with the natural weathering of coal mine spoils J Environmental Pollution Wan Shu-juan Dang Zhi Yang Chen et al Isolation of J an Acidithiobacillus ferrooxidans strain and investigation Ma Yi-hong Yi Xiao-yun Dang Zhi Extractability and bioavailability of heavy metals in surface soil derived from smelting zinc J Journal of South China University of Technology Natural Science Edition Zhou Jian-min Dang Zhi Cai Mei-fang et al Speciation distribution and transfer of heavy metals in contaminated stream waters around Dabaoshan mine J Research of Duan Xing-chun Wang Wen-jin Dang Zhi et al Distribution of heavy metals in water around the Dabaoshan mine J Earth and Environment J on its growth conditions J Chinese Journal of Environmental Engineering J Hu Zhen-qi Zhang Ming-liang Ma Bao-guo et al Selec-

2002 24 1 46-48 7 J 2004 13 1 6-8 Cai Mei-fang Dang Zhi Wen Zhen et al Risk assessment of heavy metals contamination of soils around mining area J Ecology and Environment 2004 13 1 6-8 AMD 8 4 J 2004

6 88 ( 自然科学版 ) 40 tive bactericides for at-source pollution control of acid coal waste piles J Research of Environmental Sciences from aqueous solution by corn stalk graft copolymers J Zhang Zhe Dang Zhi Shu Xiao-hua Study on the inhibition of biological oxidation in sulfide tailings J Chinese Journal of Environmental Engineering Pb 2 + J P Liu Y Dang Z Wu P X et al Influence of ferric iron on the electrochemical behavior of pyrite J Ionics Liu Y Dang Z Lu G N et al Utilization of electrochemical impedance spectroscopy for monitoring pyrite oxidation in the presence and absence of Acidithiobacillus ferrooxidans J Minerals Engineering Cai M F Dang Z Chen Y W et al The passivation of pyrrhotite by surface coating J Chemosphere J Cai Mei-fang Dang Zhi Oxidation mechanism of pyrrhotite in laboratory conditions J Journal of South China University of Technology Natural Science Edition Ba D TETA D Cr VI 20 D X 2012 P ZL X P D J ZL P Zhou Jian-min Dang Zhi Chen Neng-chang et al En- 23 hanced phytoextraction of heavy metal contaminated soil ZL P by chelating agents and auxin indole-3-acetic acid J 24 Cu 2 + Pb 2 + Environmental Science Cd 2 + J NTA Cu Zn J Chen De-yi Zheng Liu-chun Dang Zhi et al Effect of Cd 2 + adsorption by modified corn stalk in Cu 2 + Pb 2 + aqueous solution J Environmental Chemistry Zheng L C Dang Z Zhu C F et al Removal of cadmium Ⅱ J Boiresource Technology Zheng L C Dang Z Yi X Y et al Equilibrium and kinetic studies of adsorption of Cd Ⅱ from aqueous solution using modified corn stalk J Journal of Hazardous Marterial Cd Lin Fang-fang Yi Xiao-yun Dang Zhi et al Adsorption of Cd 2 + and Pb 2 + from aqueous solution by modified peanut shells J Journal of Agro-Environment Science DSRBa J Liu Yan Dang Zhi Liu Yun et al Isolation and identification of a sulfate-reducing bacteria DSRBa and its characterization J Journal of Agro-Environment Science P Cao W Dang Z Zhou X Q et al Removal of sulphate from aqueous solution using modified rice straw preparation characterization and adsorption performance J Carbohydrate Polymers Desulfovibrio sp strain SR Zhou Jian-min Dang Zhi Chen Neng-chang et al Influ-

14 Pb 2 + J 2011 200910193483 0 P 2010-05-05 15 Liu Y Dang Z Wu P X et al Influence of ferric iron on the electrochemical behavior of pyrite J Ionics 2011 17 2 169-176 16 Liu Y Dang Z Lu G N et al

7 10 89 ence of NTA on accumulation and chemical form of copper and zinc in maize J Journal of Agro-Environment Science NTA Cu Zn J Zhou Jian-min Dang Zhi Tao Xue-qin et al Influence of NTA on accumulation and subcellular distribution of copper and zinc in corn Zea mays J Environmental Science Hui Jun-ai Dang Zhi Ye Qing-sheng Influence of cadmium stress on photosynthetic characteristics of maize J Journal of Agro-Environment Science maize Zea mays L J Liu Hong-juan Dang Zhi Zhang Hui et al Characterization of heavy metal resistance and Cd-accumulation on a Bacillus cereus strain J Journal of Agro-Environment Science J Zhang Hui Dang Zhi Yi Xiao-yun et al Phytoremediation of soil contamination with pyrene by maize CT38 Zea mays L J Environmental Chemistry Zhang H Dang Z Yi X Y et al Evaluation of dissipation J mechanisms for pyrene by maize Zea mays L in cadmium co-contaminated soil J Global NEST Jounal Zhang H Dang Z Zheng L C et al Remediation of soil co-contaminated with pyrene and cadmium by growing J International Journal of Environmental Science and Technology Source Control and Remediation of Environmental Contamination in Metal Sulfide Mine Areas Dang Zhi Lu Gui-ning Yang Chen Yi Xiao-yun Guo Chu-ling School of Environmental Science and Engineering The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters of the Ministry of Education South China University of Technology Guangzhou Guangdong China Abstract The natural weathering of mine tailings in metal sulfide mine areas can generate and release huge amounts of acid mine drainage AMD containing heavy metals and sulfate ions which may result in serious contamination of local and downstream environment of water and soils In this paper the relevant researches completed by the authors and their team are introduced as follows 1 based on the chemical and microbial oxidation mechanisms of the mine tailings sustained-release bactericides were developed to inhibit microbial oxidation and several passivators such as sodium triethylenetetramine-bisdithiocarbamate were produced to cut off the contact between the tailings and the air water and microbes so as to inhibit the oxidation of the tailings thus controlling the release of heavy metals and sulfate ions from the source 2 in view of the fact that the heavy metal and sulfate contamination of the surrounding environment in mine areas is caused mainly by means of water migration absorbent materials from modified maize straw peanut shells and rice straw were developed to remove heavy metals and sulfate ions from AMD and a biochemical function material capable of simultaneously removing heavy metals and sulfate ions was built by immobilizing sulfate-reducing bacteria onto modified absorbent materials and 3 a technique by the name of production simultaneously with remediation was devised which adopts the economic crop of corn to remediate contaminated soils thus realizing soil remediation simultaneously with agricultural production Key words metal sulfide mine area heavy metal sulfate source control remediation 张娜娜

of cadmium stress on photosynthetic characteristics of maize J Journal of Agro-Environment Science 2010 29 2 205-210 38 maize Zea mays L J 2010 29 1 25-29 Liu Hong-juan Dang Zhi Zhang Hui et al

ph ph ph Langmuir mg /g Al 2 O 3 ph 7. 0 ~ 9. 0 ph HCO - 3 CO 2-3 PO mg /L 5 p

ph ph ph Langmuir mg /g Al 2 O 3 ph 7. 0 ~ 9. 0 ph HCO - 3 CO 2-3 PO mg /L 5 p 1 2 1 2 3 1 2 1. 100054 2. 100054 3. 100036 ph ph ph Langmuir 166. 67 mg /g Al 2 O 3 ph 7. 0 ~ 9. 0 ph HCO - 4 5. 00 mg /L 5 ph doi 10. 13928 /j. cnki. wrahe. 2017. 03. 017 TV213. 4 + TU991. 26 + 6 A 1000-0860

84 ( 自 然 科 学 版 ) 40 rrna 15 Acidithiobacillus ferrooxidans 11 DBS ph Fe 2 + Fe 3 + SDS CTAB SDS CTAB SDS mg /L Fe % CTAB 5 mg

84 ( 自然科学版 ) 40 rrna 15 Acidithiobacillus ferrooxidans 11 DBS ph Fe 2 + Fe 3 + SDS CTAB SDS CTAB SDS mg /L Fe % CTAB 5 mg