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      Synergistic Preparation of Sludge Carbon from Oily Sludge and Walnut Shells

      research-article
      1 , 2 , , 1
      International Journal of Analytical Chemistry
      Hindawi

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          Abstract

          The preparation process of synergistic preparation of sludge carbon by oily sludge and walnut shells are divided into two stages: carbonization preparation of a carbon precursor and activation preparation of sludge carbon. The preparation conditions of the carbon precursor are 2.5:1 mass ratio of oily sludge and walnut shells, carbonization temperature is 450°C, and time is 2 h. There are some pores on the surface of the prepared carbon precursor, the heavy metal content of leachate does not exceed the standard, and the use process will not cause heavy metal pollution. Intensive research is carried out on factors affecting the preparation of sludge carbon by activation of the carbon precursor by the orthogonal experiment and single-factor experiment. The optimal activation conditions are determined by using ZnCl 2 as an activator, mass ratio of the carbon precursor to ZnCl 2 is 1:4, activation temperature is 800°C, heating rate is 15°C/min, and activation holding time is 1 h. The surface of sludge carbon is distributed with many pores, several layers of small pores can be seen deeply in the large holes, and pore size distribution is dominated by micropores and mesopores. BET Specific surface area, pore volume, average pore, and iodine value are 1772.69 m 2/g, 1.98 cm 3/g, 1.64 nm, and 1011.65 mg/g, respectively, which surpasses commercially available activated carbon comprehensively.

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          Most cited references17

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          Carbon electrode materials for supercapacitors obtained by co-carbonization of coal-tar pitch and sawdust

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            The investigation of activated carbon by K2CO3 activation: Micropores- and macropores-dominated structure

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              Micro- and mesoporous-enriched carbon materials prepared from a mixture of petroleum-derived oily sludge and biomass

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                Author and article information

                Contributors
                Journal
                Int J Anal Chem
                Int J Anal Chem
                ijac
                International Journal of Analytical Chemistry
                Hindawi
                1687-8760
                1687-8779
                2022
                18 August 2022
                : 2022
                : 6734039
                Affiliations
                1Chongqing Water Resources and Electric Engineering College, Chongqing 402160, China
                2State Key Laboratory of Petroleum and Pollution Control, Beijing 102206, China
                Author notes

                Academic Editor: Waleed Alahmad

                Author information
                https://orcid.org/0000-0002-4472-5973
                https://orcid.org/0000-0003-2854-6139
                Article
                10.1155/2022/6734039
                9410980
                05bfbf14-aeec-490c-95f7-c5092df34b64
                Copyright © 2022 Chao Tang and Jiaojiao Guan.

                This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 21 April 2022
                : 18 June 2022
                : 5 July 2022
                Funding
                Funded by: Chongqing Municipal Education Commission
                Award ID: KJQN202103805
                Categories
                Research Article

                Analytical chemistry
                Analytical chemistry

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