煤矸石螯合改性后对选矿废水中重金属离子吸附研究
收稿日期: 2022-06-20
网络出版日期: 2023-04-13
基金资助
贵州省教育厅基金项目(黔教合KY字[2019]136);贵州省教育厅基金项目(黔教合KY字[2019]140);六盘水市科技计划项目(52020-2019-05-06);六盘水市科技计划项目(52020-2019-05-08);六盘水师范学院科技创新团队(LPSSYKJTD201906)
Study on adsorption of heavy metal ions in mineral processing wastewater by chelating modified coal gangue
Received date: 2022-06-20
Online published: 2023-04-13
选取贵州省某6个矿区煤矸石进行均匀混合，通过700 ℃煅烧后获得热活化的样品。采用螯合剂次氮基三乙酸（NTA）与羧甲基淀粉（CMS）对热活化的样品进行改性，制备低成本的改性煤矸石吸附剂。通过单因素静态吸附实验分别研究了pH、CMS与NTA固液比、吸附剂投加量、吸附时间等对改性煤矸石吸附废水中Cu2+和Pb2+的影响。结果表明，在焙烧温度为700 ℃、CMS与NTA最佳固液质量比（简称固液比）为1∶15、溶液pH=9、吸附时间为2 h、投放量为0.8 g/L条件下，改性煤矸石能够吸附选矿废水中大量Cu2+和Pb2+，最佳去除率分别为69.34%和79.98%。结合吸附等温模型拟合分析，吸附剂对Pb2+的吸附过程以单层的化学吸附为主。
张谌虎 , 马毅 , 朱山 , 陈鹏 , 王成勇 , 李子文 . 煤矸石螯合改性后对选矿废水中重金属离子吸附研究[J]. 无机盐工业, 2023 , 55(4) : 97 -103 . DOI: 10.19964/j.issn.1006-4990.2022-0375
The coal gangue from 6 mining areas in Guizhou province was mixed evenly and the thermal activated samples were obtained after calcination at 700 ℃.The coal gangue was modified by chelating agent NTA and carboxymethyl starch（CMS）and the low cost modified coal gangue adsorbent was prepared.The effects of pH value，solid-liquid ratio of CMS and NTA，adsorbent dosage and adsorption time on the adsorption of Cu2+ and Pb2+ from wastewater by modified coal gangue were studied by single factor static adsorption experiment.The results showed that the modified coal gangue could adsorb a large amount of Cu2+ and Pb2+ from mineral processing wastewater under the roasting temperature of 700 ℃，the optimal solid-liquid ratio of CMS and NTA of 1∶15，the solution pH of 9，the adsorption time of 2 h，and the dosage of 0.8 g/L.The optimal removal rates were 69.34% and 79.98%，respectively.Combined with the isothermal model fitting analysis，the adsorption process of Pb2+ was dominated by monolayer chemisorption.
Key words： coal gangue; surface modification; chelating agent; heavy metal ion
| 1 | 贾鲁涛，吴倩云.煤矸石特性及其资源化综合利用现状[J].煤炭技术，2019，38（11）：37-40. |
| JIA Lutao， WU Qianyun.Properties and comprehensive utilization status of coal gangue resource[J].Coal Technology，2019，38（11）：37-40. | |
| 2 | 郭伟.煤矸石资源化的研究进展[J].中国矿业，2007，16（7）：85-87. |
| GUO Wei.Progress on utilization of coal gangue[J].China Mining Magazine，2007，16（7）：85-87. | |
| 3 | 程金生，惠冰，孟凌霄，等.公路工程煤矸石填筑路基可行性研究[J].建筑技术开发，2021，48（3）：155-156. |
| CHENG Jinsheng， HUI Bing， MENG Lingxiao，et al.Feasibility study of roadbed filling with gangue for highway engineering[J].Building Technology Development，2021，48（3）：155-156. | |
| 4 | 徐平坤.利用煤矸石生产耐火材料[J].再生资源与循环经济，2016，9（3）：41-44. |
| XU Pingkun.Production of refractory materials by using coal gangue[J].Recyclable Resources and Circular Economy，2016，9（3）：41-44. | |
| 5 | 俞心刚，李德军，田学春，等.煤矸石泡沫混凝土的研究[J].新型建筑材料，2008，35（1）：16-19. |
| YU Xingang， LI Dejun， TIAN Xuechun，et al.Study on gangue foam concrete[J].New Building Materials，2008，35（1）：16-19. | |
| 6 | 张新策，郑波，夏静慧，等.一种煤矸石生产硅酸盐水泥熟料的制备方法：中国，110845159A[P].2020-02-28. |
| 7 | GAO Yajun， HUANG Huijuan， TANG Wenjing，et al.Preparation and characterization of a novel porous silicate material from coal gangue[J].Microporous and Mesoporous Materials，2015，217：210-218. |
| 8 | QIAN Tingting， LI Jinhong.Synthesis of Na-A zeolite from coal gangue with the in situ crystallization technique[J].Advanced Powder Technology，2015，26（1）：98-104. |
| 9 | CHEN Jianlong， LU Xinwei.Synthesis and characterization of zeolites NaA and NaX from coal gangue[J].Journal of Material Cycles and Waste Management，2018，20（1）：489-495. |
| 10 | 邓晓虎，乐英红，高滋.K2CO3活化煤矸石制备活性炭吸附剂[J].应用化学，1997，14（3）：49-52. |
| DENG Xiaohu， YUE Yinghong， GAO Zi.Preparation of active carbon adsorbents from elutrilithe via K2CO3 activation[J].Chinese Journal of Applied Chemistry，1997，14（3）：49-52. | |
| 11 | Qikai Lü， DONG Xinfa， ZHU Zhiwen，et al.Environment-oriented low-cost porous mullite ceramic membrane supports fabricated from coal gangue and bauxite[J].Journal of Hazardous Materials，2014，273：136-145. |
| 12 | DONG Weiyang， JIN Yaoyao， ZHOU Kang，et al.Efficient degradation of pharmaceutical micropollutants in water and wastewater by FeIII-NTA-catalyzed neutral photo-Fenton process[J].Science of the Total Environment，2019，688：513-520. |
| 13 | SAINI S， KATNORIA J K， KAUR I.Surface modification of Dendrocalamus strictus charcoal powder using nitrilotriacetic acid as a chelating agent and its application for removal of copper（Ⅱ） from aqueous solutions[J].Separation Science and Technology，2021，56（2）：275-289. |
| 14 | 陈亮，陈东辉，李步祥.壳聚糖吸附处理废水的研究进展[J].四川环境，2001，20（3）：19-23. |
| CHEN Liang， CHEN Donghui， LI Buxiang.Review on the adsorption of chitosan in wastewater treatment[J].Sichuan Environment，2001，20（3）：19-23. | |
| 15 | 周秋生.海藻酸盐凝胶微球的制备及其吸附性能研究[D].绵阳：西南科技大学，2015. |
| ZHOU Qiusheng.Studies on preparation and adsorption performance of alginate gel microspheres[D].Mianyang：Southwest Uni-versity of Science and Technology，2015. | |
| 16 | 何莼，李忠，赵桢霞，等.低成本木质素吸附剂对废水中Pb2+吸附性能的研究[J].离子交换与吸附，2006，22（6）：481-488. |
| HE Chun， LI Zhong， ZHAO Zhenxia，et al.Adsorption properties of a low-cost lignin adsorbent for removal of heavy metal ions Pb2+ [J].Ion Exchange and Adsorption，2006，22（6）：481-488. | |
| 17 | 孔德顺，李志，李琳，等.六盘水矿区煤矸石理化性质及资源化利用分析[J].煤炭工程，2013，45（7）：99-101. |
| KONG Deshun， LI Zhi， LI Lin，et al.Analysis on physicochemical properties and resource utilization of coal rejects in Liupanshui mining area[J].Coal Engineering，2013，45（7）：99-101. | |
| 18 | 吴红，孔德顺，张绪勇，等.六盘水矿区煤矸石理化特性及热活化研究[J].硅酸盐通报，2016，35（11）：3814-3818. |
| WU Hong， KONG Deshun， ZHANG Xuyong，et al.Physicochemical properties and thermal activation of coal gangue in Liupanshui mining area[J].Bulletin of the Chinese Ceramic Society，2016，35（11）：3814-3818. | |
| 19 | ZHANG Ge， YANG Huifen， JIANG Meiling，et al.Preparation and characterization of activated carbon derived from deashing coal slime with ZnCl2 activation[J].Colloids and Surfaces A：Physicochemical and Engineering Aspects，2022，641.Doi：10.1016/j.colsurfa.2021.128124. |
| 20 | ZHANG Weiqing， DONG Chaowei， HUANG Peng，et al.Experimental study on the characteristics of activated coal gangue and coal gangue-based geopolymer[J].Energies，2020，13（10）.Doi：10.3390/en13102504. |
| 21 | FA'IZZAH M， WIDJIJONO W， KAMIYA Y，et al.Synthesis and characterization of white mineral trioxide aggregate using precipitated calcium carbonate extracted from limestone[J].Key Engineering Materials，2020，840：330-335. |
| 22 | TIAN Xianghui， SONG Dazhao， HE Xueqiu，et al.Investigation on micro-surface adhesion of coals and implications for gas occurrence and coal and gas outburst mechanism[J].Journal of Natural Gas Science and Engineering，2021，94.Doi：10.1016/j.jngse.2021.104115. |
| 23 | MOHAMMADI R， AZADMEHR A， MAGHSOUDI A.Fabrication of the alginate-combusted coal gangue composite for simultaneous and effective adsorption of Zn（Ⅱ） and Mn（Ⅱ）[J].Journal of Environmental Chemical Engineering，2019，7（6）.Doi：10.1016/j.jece.2019.103494. |
| 24 | JIN Yuxuan， LIU Ze， HAN Le，et al.Synthesis of coal-analcime composite from coal gangue and its adsorption performance on heavy metal ions[J].Journal of Hazardous Materials，2022，423.Doi：10.1016/j.jhazmat.2021.127027. |
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