黄土钙质结核对水体重金属离子的吸附性能研究

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英文篇名：Study on Adsorption Capacities of Loess Calcareous Concretion to Weight Metal Ions in Water Body 作者：齐丽 ; 刘智杰 ; 李劲彬 ; 王璐瑶 英文作者：QI Li;LIU Zhijie;LI Jinbin;WANG Luyao;Shaanxi Provincial Land Engineering Construction Group Co., Ltd.;Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd.;Shaanxi Provincial Land Consolidation Engineering Technology Research Center;Key Laboratory of Degraded and Unused Land Consolidation Engineering, Ministry of Land and Resources;China Coal Xi′an Design Engineering Co., Ltd.; 关键词：黄土钙质结核 ; 重金属离子 ; 单一吸附 ; 吸附率 英文关键词：loess calcareous concretion;;heavy metal ions;;single adsorption;;adsorption rate 中文刊名：水土保持研究 英文刊名：Research of Soil and Water Conservation 机构：陕西省土地工程建设集团有限责任公司;陕西地建土地工程技术研究院有限责任公司;自然资源部退化及未利用土地整治工程重点实验室;陕西省土地整治工程技术研究中心;中煤西安设计工程有限责任公司; 出版日期：2019-09-16 出版单位：水土保持研究 年：2019 期：05 基金：陕西省土地整治重点实验室开放基金(2019-ZD05) 语种：中文; 页：372-376+382 页数：6 CN：61-1272/P ISSN：1005-3409 分类号：X52

摘要

以黄土钙质结核作为吸附剂,以重金属离子(Cu~(2+),Zn~(2+),Cd~(2+)和Pb~(2+))作为吸附质,通过单一重金属吸附试验,研究不同粒径、吸附时间、pH、吸附剂用量、重金属初始浓度和温度等因素对钙质结核吸附重金属离子的影响,并确定钙质结核吸附重金属离子的最优条件。结果表明:随粒径增大,Cu~(2+),Zn~(2+)和Pb~(2+)的吸附率逐渐下降,但对Cd~(2+)无明显影响;随吸附时间、吸附剂用量和温度的增加,Cu~(2+),Zn~(2+),Cd~(2+)和Pb~(2+)的吸附率逐渐升高;随重金属离子初始浓度的增加,Cu~(2+),Zn~(2+)和Cd~(2+)的吸附率逐渐下降,而Pb~(2+)的吸附率则呈先增加后减少的趋势;随pH增大,Cd~(2+)的吸附率先陡然增加后缓慢增加,而Cu~(2+),Zn~(2+)和Pb~(2+)的吸附率先增加后减少。钙质结核对4种重金属离子的吸附能力呈Pb~(2+)>Zn~(2+)>Cu~(2+)>Cd~(2+)的顺序;在粒径为0.25 mm、吸附时间为120 min、用量为0.6 g时,钙质结核对Pb~(2+),Zn~(2+)、Cu~(2+)和Cd~(2+)能达到较好的吸附,吸附率分别能达到其最大吸附率的83.33%,77.78%,73.81%和81.93%。钙质结核对Pb~(2+),Zn~(2+)、Cu~(2+)和Cd~(2+)的最优吸附pH分别为7,6,5,8,最优温度为50℃。
        Calcareous concretion was used as adsorbent and heavy metal ions(Cu~(2+), Zn~(2+), Cd~(2+) and Pb~(2+)) were used as adsorbates. Different particle size, adsorption time, pH, adsorbent dosage and initial concentration of heavy metals were studied by single heavy metal adsorption test. The influence of temperature and other factors on the adsorption of heavy metal ions by calcareous nodules was investigated, and the optimal conditions for the adsorption of heavy metal ions by calcareous concretion were determined. The results show that the adsorption rates of Cu~(2+), Zn~(2+) and Pb~(2+) decrease gradually with the increase of particle size, but have no obvious effect on Cd~(2+); with the increase of adsorption time, adsorbent dosage and temperature, the adsorption rates of Cu~(2+), Zn~(2+), Cd~(2+) and Pb~(2+) gradually increase; the adsorption rates of Cu~(2+), Zn~(2+) and Cd~(2+) decreased gradually with the increase of the initial concentrations of heavy metal ions, while the adsorption rate of Pb~(2+) increases first and then decreases; with the increase of pH, the adsorption rate of Cd~(2+) increases first and then increases slowly; the adsorption rates of Cu~(2+), Zn~(2+) and Pb~(2+) increase first and then decrease; the adsorption capacity of calcareous concretion to four heavy metal ions decrease in the order: Pb~(2+)>Zn~(2+)>Cu~(2+)>Cd~(2+); when the particle size is 0.25 mm, the adsorption time is 120 min and the dosage is 0.6 g, the amounts of Pb~(2+), Zn~(2+), Cu~(2+); and Cd~(2+) adsorbed by the calcareous concretion can achieve the higher level, and the adsorption rates can reach 83.33%, 77.78%, 73.81% and 81.93% of their maximum adsorption rates, respectively. The optimal pH scales for calcareous concretion to adsorb Pb~(2+), Zn~(2+), Cu~(2+) and Cd~(2+) are 7, 6, 5 and 8, respectively, and the optimal temperature is 50℃.

引文

[1] 张智慧,李宝,梁仁君.南四湖南阳湖区河口与湖心沉积物重金属形态对比研究[J].环境科学学报,2015,35(5):1408-1416.
    [2] Wang Y Y,Liu Y X,Lu H H,et al.Competitive adsorption of Pb(Ⅱ),Cu(Ⅱ),and Zn(Ⅱ)ions onto hydroxyapatite-biochar nano composite in aqueous solutions[J].Journal of Solid State Chemistry,2018,261:53-61.
    [3] 邹继颖,孙大志,赵家伟,等.玉米秸秆生物炭对重金属镉、铅的吸附性能[J].北华大学学报,2018,19(4):536-540.
    [4] 李力,陆宇超,刘娅,等.玉米秸秆生物炭对Cd(Ⅱ)的吸附机理研究[J].农业环境科学学报,2012,31(11):2277-2283.
    [5] 刘金燕,刘立华,薛建荣,等.重金属废水吸附处理的研究进展[J].环境化学,2018,37(9):2016-2024.
    [6] 冀泽华,吴晓芙,李芸,等.水溶液重金属离子在蛭石上的动态吸附行为与化学势变[J].环境化学,2015,34(11):2109-2117.
    [7] Sheikhhosseini A,Shirvani M,Shariatmadari H.Competitive sorption of nickel,cadmium,zinc and copper on palygorskite and sepiolite silicate clay minerals[J].Geoderma,2013,192(1):249-253.
    [8] 何宏平,郭九皋,朱建喜,等.蒙脱石、高岭石、伊利石对重金属离子吸附容量的实验研究[J].岩石矿物学杂志,2001(4):573-578.
    [9] 巩铁雄,朱元骏.黄土高原水蚀风蚀交错带六道沟小流域坡面表土钙质结核分布[J].中国水土保持科学,2016,14(4):42-49.
    [10] 滕志宏,刘荣谟,陈苓,等.中国黄土地层中的钙质结核研究[J].科学通报,1990,35(13):1008-1008.
    [11] 王守玉.陕北地区N_2红土岩石学特征及其工程地质意义[D].北京:中国矿业大学,2017.
    [12] 巩铁雄.黄土区坡面钙质结核分布及其水分特征研究[D].北京:中国科学院大学(中国科学院教育部水土保持与生态环境研究中心),2017.
    [13] 巩铁雄,朱元骏.黄土高原水蚀风蚀交错带六道沟小流域坡面表土钙质结核分布[J].中国水土保持科学,2016,14(4):42-49.
    [14] 李长安,吴金平,曹江雄.冀西北黄土钙质结核形态及其成因动力学特征与地层环境意义[J].地球科学,1995,20(5):511-514.
    [15] 杨立国,乔冬云,胡鹏宇,等.全自动消解—电感耦合等离子体质谱法测定环境土壤中13种元素[J].中国土壤与肥料,2019,279(1):190-195.
    [16] 高宝云,邱涛,李荣华,等.巯基改性玉米秸秆粉对水体重金属离子的吸附性能初探[J].西北农林科技大学学报:自然科学版,2012,40(3):185-190.
    [17] 覃海富,张卫民.石英砂负载羟基磷灰石对铅镉吸附性能[J].科学技术与工程,2018,18(20):353-357.
    [18] Tsao T M,Chen Y M,Sheu H S,et al.Red soil chemistry and mineralogy reflect uniform weathering environments in fluvial sediments,Taiwan[J].Journal Soils Sediments,2012,12:1054-1065.
    [19] Zhu H,Chen W,Li Y,et al.Aggregation kinetics of natural soil nanoparticles in different electrolytes[J].European Journal of Soil Science,2014,65:206-217.
    [20] Zhang Z Y,Huang L,Liu F,et al.The properties of clay minerals in soil particles from two Ultisols,China[J].Clays and Clay minerals,2017,65:273-285.
    [21] Chou Y M,Song S R,Tsao M T,et al.Identification and tectonic implications of nano-particle quartz (<50 nm) by synchrotron X-ray diffraction in the Chelungpu fault gouge,Taiwan.Tectonophysics,2014,619/620(21):36-43.
    [22] 叶涛,黄丽,张克强,等.皂角苷和柠檬酸联合对污泥中Cu,Pb和Zn的去除及其稳定性特征[J].环境科学,2017,38(11):4850-4859.