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    ПОЛУЧЕНИЕ АКТИВИРОВАННОГО УГЛЯ СО-ТЕРМОЛИЗОМ РИСОВОЙ СОЛОМЫ И НЕФТЕШЛАМА
    (2019-01-01)
    Nurbol Orynbasaruly Appazov
    ;
    R. A. Turmanov
    ;
    Rakhmetulla Zhapparbergenov
    ;
    A. T. Shuragaziyeva
    ;
    Nurgali Akylbekov
    Carrying out joint activities in order to obtain a widely used adsorbent – activated carbon. A carbonization tube in a tube furnace made of stainless steel at a temperature of 500°C, and activation of a carbonizate carried out by steam at a temperature of 800°C. The influence of the ratio of the initial components of the raw material (husk:oil sludge) on the properties of the product was studied. Husk:oil sludge is 9:1 (by weight), respectively. Indicators such as water adsorption activity, total owner volume and bulk figure were studied. The microstructure of the obtained activated carbon was studied on a scanning electron microscope. 9: 1 corresponds to activated carbon brand DAK. References [1] Kinle H., Bader Je. Aktivnye ugli i ih promyshlennoe primenenie. L.: Himija, 1984. 216 p. [2] Arezou Niksiar, Bahram Nasernejad. Activated carbon preparation from pistachio shell pyrolysis and gasification in a spouted bed reactor // Biomass and Bioenergy. 2017. Vol. 106. P. 43-50. DOI: 10.1016/j.biombioe.2017.08.017. [3] Yeru Liang, Chen Yang, Hanwu Dong, Wenqi Li, Hang Hu, Yong Xiao, Mingtao Zheng, Yingliang Liu. Facile Synthesis of Highly Porous Carbon from Rice Husk // ACS Sustainable Chem. Eng., Just Accepted Manuscript. 2017. Vol. 5, N. 8. P. 7111-7117. DOI: 10.1021/acssuschemeng.7b01315. [4] Wenli Zhang, Nan Lin, Debo Liu, Jinhui Xu, Jinxin Sha, Jian Yin, Xiaobo Tan, Huiping Yang, Haiyan Lu, Haibo Lin. Direct carbonization of rice husk to prepare porous carbon for supercapacitor applications // Energy. 2017. Vol. 128. P. 618-625. DOI: 10.1016/j.energy.2017.04.065. [5] Pred.patent RK №15933. Sposob poluchenija karbonizirovannogo sorbenta dlja izvlechenija zolota iz rastvorov / Mansurov Z.A., Mansurova R.M., Nikolaeva A.F., Vasil'ev D.G.; data opubl. 15.07.2005. Bjul. №7. [6] Patent RF №2315712 na izobretenie. Sposob poluchenija aktivirovannogo uglja iz othodov sel'skogo hozjajstva / Hoang Kim Bong, Timofeev V.S., Tjomkin O.N., Gafarov I.G., Timoshenko A.V., Artamonova T.V., Gorbacheva O.V., Kol'vah I.P., Mishulin G.M., Shhepakin M.B., Kozhura E.A., Haziev R.M., Vatolin A.K.; data opubl. 27.01.2008. [7] Patent RF №2527221 na izobretenie. Sposob poluchenija aktivnogo uglja iz rastitel'nyh othodov / Muhin V.M., Voropaeva N.L., Karpachev V.V., Harlamov S.A., Spiridonov Ju.Ja., Gur'janov V.V., Dmitrjakova E.E.; data opubl. 27.08.2014. [8] Aworn A. Preparation of CO2 activated carbon from corncob for monoethylene glycol adsorption / A. Amphol, T. Paitip, N. Woranan // Colloids and Surfaces A: Physicochem and Eng. Asp. 2009. Vol. 333. Is. 1-3. P. 19-25. [9] Chang Ch-F. Effects of Burn-off and Activation Temperature on Preparation of Activated Carbon from Corn Cob Agrowaste by CO2 and Steam / Ch-F. Chang, Ch-Y. Chang, W-T. Tsai // Journal of Colloid and Interface Science. 2000. Vol. 232, N 1. P. 45-49. [10] Hanum F., Bani O., Wirani L.I. Characterization of Activated Carbon from Rice Husk by HCl Activation and Its Application for Lead (Pb) Removal in Car Battery Wastewater // IOP Conf. Series: Materials Science and Engineering. 2017. Vol. 180, 012151. DOI: 10.1088/1757899X/180/1/012151. [11] Hanum F., Bani O., Izdiharo A.M. Characterization of Sodium Carbonate (Na2CO3) Treated Rice Husk Activated Carbon and Adsorption of Lead from Car Battery Wastewater // IOP Conf. Series: Materials Science and Engineering. 2017. Vol. 180, 012149. DOI: 10.1088/1757899X/180/1/012149. [12] Patent RF №2609802 na izobretenie. Sposob poluchenija aktivnogo uglja iz rastitel'nogo syr'ja / Klushin V.N., Thu Aung Si, Muhin V.M., Vin M'int So, Nistratov A.V., Voropaeva N.L.; data opubl. 06.02.2017. Bjul. №4. [13] Daifullah A.A.M., Girgis B.S., Gad H.M.H. A study of the factors affecting the removal of humic acid by activated carbon prepared from biomass material // Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2004. Vol. 235, N 1-3. P. 1-10. DOI: 10.1016/j.colsurfa.2003.12.020. [14] Mohamed M.M. Acid dye removal: comparison of surfactant-modified mesoporous FSM-16 with activated carbon derived from rice husk // Journal of Colloid and Interface Science. 2004. Vol. 272, N 1. P. 28-34. DOI: 10.1016/j.jcis.2003.08.071. [15] Rahman I.A. Saad B., Shaidan S., Sya Rizal E.S. Adsorption characteristics of malachite green on activated carbon derived from rice husks produced by chemical–thermal process // Bioresource Technology. 2005. Vol. 96, N 14. P. 1578-1583. DOI: 10.1016/j.biortech.2004.12.015. [16] Kennedy L.J., Vijaya J.J., Sekaran G. Effect of Two-Stage Process on the Preparation and Characterization of Porous Carbon Composite from Rice Husk by Phosphoric Acid Activation // Ind. Eng. Chem. Res. 2004. Vol. 43, N 8. P. 1832-1838. DOI: 10.1021/ie034093f. [17] Guo Y. Rockstraw D.A. Activated carbons prepared from rice hull by one-step phosphoric acid activation // Microporous and Mesoporous Materials. – 2007. Vol. 100. Is. 1-3. P. 12-19. DOI: 10.1016/j.micromeso.2006.10.006. [18] GOST 6217. Ugol' aktivnyj drevesnyj droblenyj. Tehnicheskie uslovija. M.: IPK Izdatel'stvo standartov, 2003. [19] GOST 17219. Ugli aktivnye. Metod opredelenija summarnogo ob#ema por po vode. M.: Izdatel'stvo standartov, 1988. [20] GOST 12597. Sorbenty. Metod opredelenija massovoj doli vody v aktivnyh ugljah i katalizatorah na ih osnove. M.: Izdatel'stvo standartov, 1989. [21] GOST 16190. Sorbenty. Metod opredelenija nasypnoj plotnosti. M.: Izdatel'stvo standartov, 1970.
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    ADSORBENTS BASED ON MODIFIED NANOCELLULOSE: WATER PURIFICATION FROM ORGANIC AND INORGANIC POLLUTANTS
    (Shakarim University, 2026-07-29)
    Zhexenbek Toktarbay
    ;
    Makhabbat Kunarbekova
    ;
    B. U. Rakhimova
    ;
    Kenes Kudaibergenov
    ;
    Dana Ashiraliyeva
    Against the backdrop of rapid industrial growth, water pollution has become a pressing global environmental issue. This review provides a systematic analysis of the efficiency of functionalized nanocellulose- based adsorbents for the removal of organic (synthetic dyes, phenols, antibiotics, pesticides) and inorganic (Pb 2+ , Cd 2+ , Hg 2+ , Cr(VI), Cu 2+ , As) pollutants from water. Key findings: the highest sorption capacities are achieved by TEMPO-oxidized nanocellulose and amine-functionalized composites – up to 2500 mg/g for methylene blue and up to 2270 mg/g for lead ions. Nanocellulose-based molecularly imprinted polymers (MIPs) selectively adsorb phenols with efficiencies of up to 97% even in the presence of structurally similar competitors. Most adsorbents reviewed retain 80+90% of their capacity after 20 regeneration cycles. The paper examines three main types of nanocellulose (CNC, NFC, BNC), their preparation methods (acid hydrolysis, TEMPO-oxidation, mechanical and enzymatic treatment), and surface functionalization strategies (isocyanate-based, amine- and thiol-functionalization). The alignment of nanocellulose production from agricultural waste (rice husks, soybean hulls) with sustainable development principles is emphasized. Key unresolved challenges – scale-up, stability in real wastewater matrices, and cost-effectiveness – and future research directions are also identified.