Preparation of Expanded Microcrystalline Graphite and Its Adsorption Behavior of Pb<sup>2+</sup>

LIU Bo; SUN Hongjuan; PENG Tongjiang; DUAN Jiaqi

doi:10.13779/j.cnki.issn1001-0076.2018.05.009

2018 Vol. 38, No. 5

Article Contents

Article navigation > Conservation and Utilization of Mineral Resources > 2018 > (5): 67-72, 78

Next Article Previous Article

LIU Bo, SUN Hongjuan, PENG Tongjiang, DUAN Jiaqi. Preparation of Expanded Microcrystalline Graphite and Its Adsorption Behavior of Pb2+[J]. Conservation and Utilization of Mineral Resources, 2018, (5): 67-72, 78. doi: 10.13779/j.cnki.issn1001-0076.2018.05.009

Citation:

LIU Bo, SUN Hongjuan, PENG Tongjiang, DUAN Jiaqi. Preparation of Expanded Microcrystalline Graphite and Its Adsorption Behavior of Pb²⁺[J]. Conservation and Utilization of Mineral Resources, 2018, (5): 67-72, 78. doi: 10.13779/j.cnki.issn1001-0076.2018.05.009

Preparation of Expanded Microcrystalline Graphite and Its Adsorption Behavior of Pb²⁺

1.
School of National Defense Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China
2.
Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Mianyang 621010, China
3.
Analytical and Testing Center, Southwest University of Science and Technology, Mianyang 621010, China

More Information

Corresponding author: SUN Hongjuan, sunhongjuan@swust.edu.cn

Received Date: 22 March 2018

Publish Date: 25 October 2018

Abstract

Abstract

To further extend the application of microcrystalline graphite, the expanded microcrystalline graphite was prepared by oxidation and expansion, and then was used in the treatment of lead bearing wastewater. The effects of initial Pb²⁺ concentration, reaction time, pH and temperature on the adsorption properties of expanded microcrystalline graphite were investigated by static adsorption experiments. The results showed that the expanded microcrystalline graphite was worm-shaped and composed of abundant network pores. The pore size was concentrated at 2~5 nm. The adsorption behavior of expanded microcrystalline graphite on Pb²⁺ was affected by initial concentration, time, pH and temperature. The adsorption capacity of expanded microcrystalline graphite was positively correlated with initial concentration, time and pH, and negatively correlated with temperature. The adsorption process fits well with the Langmuir isotherm model and pseudo-first-order kinetic model. Thermodynamic study revealed that adsorption of Pb²⁺ on the expanded microcrystalline graphite was primarily due to a spontaneous exothermic reaction, and the process was mainly controlled by physical adsorption.
- microcrystalline graphite /
- oxidation /
- expansion /
- reduction /
- adsorption

FullText(HTML)

References

[1]	Kadirvelu K, Thamaraiselvi K, Namasivayam C. Removal of heavy metals from industrial wastewaters by adsorption onto activated carbon prepared from an agricultural solid waste[J]. Bioresource technology, 2001, 76(1):63-65. doi: 10.1016/S0960-8524(00)00072-9 CrossRef Google Scholar
[2]	Li Y H, Wang S, Wei J, et al. Lead adsorption on carbon nanotubes[J]. Chemical physics letters, 2002, 357(3-4):263-266. doi: 10.1016/S0009-2614(02)00502-X CrossRef Google Scholar
[3]	Madadrang C J, Kim H Y, Gao G, et al. Adsorption behavior of EDTA-graphene oxide for Pb (Ⅱ) removal[J]. ACS applied materials & interfaces, 2012, 4(3):1186-1193. Google Scholar
[4]	Rao M M, Ramana D K, Seshaiah K, et al. Removal of some metal ions by activated carbon prepared from phaseolus aureus hulls[J]. Journal of hazardous materials, 2009, 166(2-3):1006-1013. doi: 10.1016/j.jhazmat.2008.12.002 CrossRef Google Scholar
[5]	Solanki P, Gupta V, Kulshrestha R. Synthesis of zeolite from fly ash and removal of heavy metal ions from newly synthesized zeolite[J]. Journal of chemistry, 2010, 7(4):1200-1205. Google Scholar
[6]	Cai G B, Zhao G X, Wang X K, et al. Synthesis of polyacrylic acid stabilized amorphous calcium carbonate nanoparticles and their application for removal of toxic heavy metal ions in water[J]. The journal of physical chemistry C, 2010, 114(30):12948-12954. doi: 10.1021/jp103464p CrossRef Google Scholar
[7]	Fu F, Zeng H, Cai Q, et al. Effective removal of coordinated copper from wastewater using a new dithiocarbamate-type supramolecular heavy metal precipitant[J]. Chemosphere, 2007, 69(11):1783-1789. doi: 10.1016/j.chemosphere.2007.05.063 CrossRef Google Scholar
[8]	Yang Z, Xia Y, Mokaya R. Enhanced hydrogen storage capacity of high surface area zeolite-like carbon materials[J]. Journal of the American chemical society, 2007, 129(6):1673-1679. doi: 10.1021/ja067149g CrossRef Google Scholar
[9]	Chae H K, Siberio-perez D Y, Kim J, et al. A route to high surface area, porosity and inclusion of large molecules in crystals[J]. Nature, 2004, 427(6974):523-527. doi: 10.1038/nature02311 CrossRef Google Scholar
[10]	Wang Y, Li L, Luo C, et al. Removal of Pb²⁺ from water environment using a novel magnetic chitosan/graphene oxide imprinted Pb²⁺[J]. International journal of biological macromolecules, 2016, 86:505-511. doi: 10.1016/j.ijbiomac.2016.01.035 CrossRef Google Scholar
[11]	Yao S, Zhang J, Shen D, et al. Removal of Pb(Ⅱ) from water by the activated carbon modified by nitric acid under microwave heating[J]. Journal of colloid & interface science, 2016, 463:118-127. Google Scholar
[12]	Li B Q, Yuan W H, Li L. Adsorption of Pb²⁺ and Cd²⁺ on graphene nanosheets prepared using thermal exfoliation[J]. Acta physico-chimica sinica, 2016, 32(4):997-1004. Google Scholar
[13]	赵颖华.膨胀石墨的制备及其对金属离子去除性能的研究[D].上海: 东华大学, 2012: 24-40.http://cdmd.cnki.com.cn/Article/CDMD-10255-1012311637.htm Google Scholar
[14]	段佳琪, 孙红娟, 彭同江.超声-混酸法提纯微晶石墨[J].非金属矿, 2017, 40(1):58-61. doi: 10.3969/j.issn.1000-8098.2017.01.018 CrossRef Google Scholar
[15]	McAllister M J, Li J L, Adamson D H, et al. Single sheet functionalized graphene by oxidation and thermal expansion of graphite[J]. Chemistry of materials, 2007, 19(18):4396-4404. doi: 10.1021/cm0630800 CrossRef Google Scholar
[16]	Deng S, Ting Y P. Characterization of PEI-modified biomass and biosorption of Cu(Ⅱ), Pb(Ⅱ) and Ni(Ⅱ)[J]. Water research, 2005, 39(10):2167-2177. doi: 10.1016/j.watres.2005.03.033 CrossRef Google Scholar
[17]	Huang X, Pan M. The highly efficient adsorption of Pb(Ⅱ) on graphene oxides:a process combined by batch experiments and modeling techniques[J]. Journal of molecular liquids, 2016, 215:410-416. doi: 10.1016/j.molliq.2015.12.061 CrossRef Google Scholar
[18]	Li Y, Liu F, Xia B, et al. Removal of copper from aqueous solution by carbon nanotube/calcium alginate composites[J]. Journal of hazardous materials, 2010, 177(1):876-880. Google Scholar
[19]	Langmuir I. The adsorption of gases on plane surfaces of glass, mica and platinum[J]. Journal of the American chemical society, 1918, 40(9):1361-1403. doi: 10.1021/ja02242a004 CrossRef Google Scholar
[20]	Freundlich H M F. Over the adsorption in solution[J]. Journal of chemical physics, 1906, 57:385-470. Google Scholar
[21]	Yin Z, Xiong J, Chen M, et al. Recovery of uranium(Ⅵ) from aqueous solution by amidoxime functionalized wool fibers[J]. Journal of radioanalytical & nuclear chemistry, 2016, 307(2):1471-1479. Google Scholar
[22]	Ho Y S. Review of second-order models for adsorption systems[J]. Journal of hazardous materials, 2006, 136(3):681-689. doi: 10.1016/j.jhazmat.2005.12.043 CrossRef Google Scholar
[23]	Wang D, Liu L, Jiang X, et al. Adsorbent for p-phenylenediamine adsorption and removal based on graphene oxide functionalized with magnetic cyclodextrin[J]. Applied surface science, 2015, 329(1):197-205. Google Scholar
[24]	Fernandes A N, Almeida C A P, Debacher N A, et al. Isotherm and thermodynamic data of adsorption of methylene blue from aqueous solution onto peat[J]. Journal of molecular structure, 2010, 982(1):62-65. Google Scholar