Reference health
Preparation and characterization of adsorbents derived from bentonite and kaolin clays
5 of 14 checkable references need attention · checked 2026-07-23
At the dated check, the references listed below either did not resolve in Crossref or DataCite, or carried a retraction notice. Each one is shown with the registry record that put it there.
12 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
References needing attention
does not resolve to a known work10.1002/(sici)10970010(199709)75:1<117:AID-JSFA850>30.C0;2-m
does not resolve to a known work10.1016/j.jhazmat2009.05.100
does not resolve to a known work10.1016/biortech.2009.08.096
does not resolve to a known work10.1002/sca.4950170030
does not resolve to a known work10.1016/S0960-8524(98)009
The 9 checked references that resolve
resolves10.3923/jest.2013.1.15
Adsorption and Desorption of Heavy Metals onto Natural Clay Material: Influence of Initial pH
resolves10.21236/ADA504486
Evaluation of GasmetTM DX-4015 Series Fourier Transform Infrared Gas Analyzer
resolves10.1016/S1572-4352(05)01001-9
Chapter 1 General Introduction: Clays, Clay Minerals, and Clay Science
resolves10.4236/jmp.2010.14031
Fourier Transform Infrared Spectroscopic Characterization of Kaolinite from Assam and Meghalaya, Northeastern India
resolves10.1016/j.jece.2016.12.032
Use of beach bivalve shells located at Port Said coast (Egypt) as a green approach for methylene blue removal
resolves10.1260/0263617001493486
Regeneration of Adsorbents by the Use of Liquid, Subcritical and Supercritical Carbon Dioxide
resolves10.1177/026361748400100305
The Two-Stage Air-CO
<sub>2</sub>
Activation in the Preparation of Activated Carbons. II. Characterization by Adsorption from Solution
The 12 references without a DOI — listed, not checked
no DOI — not checkedAbu-Elella R, Ossman M, Farouq R, Abd-Elfatah M (2015) Used motor oil treatment: turning waste oil into valuable products. Int J Chem Biochem Sci 7:57–67
no DOI — not checkedAllen RF (1999) Standard test methods for determining average grain size (F112). Annual book of ASTM standards, metal-mechanical testing; elevated and low temperature tests; metallography
no DOI — not checkedAmin E, Khairul A, Hadi N (2010) Physicochemical characteristics of phosphoric acid stabilized bentonite. Electron J Geotech Eng 15c:327–336
no DOI — not checkedASTM (2006) Standard test method for determination of iodine number of activated carbon. D4607–94
no DOI — not checkedChongrak K, Erich H, Noureddine A, Jean P (1998) Application of methylene blue adsorption to cotton fiber specific surface area measurement. J Cotton Sci 2:164–173
no DOI — not checkedEkpete OA, Horsfall MJ (2011) Preparation and characterization of activated carbon derived from fluted pumpkin stem wastes (Telfairiaoccidentalis Hook F). Res J Chem Sci 1(3):10–17
no DOI — not checkedGeorges–IVO EE (2005) Fourier transform infrared spectrometry and X-ray powder diffraction as complementary techniques in characterizing clay size fraction of kaolin. J Appl Sci Environ Manag 9(2):43–48.
http://hdi.handle.net/1807/6452
no DOI — not checkedItodo AU, Abdulrahman FW, Hassan LG, Maigandi SA, Itodo HU (2010) Application of methylene blue and iodine adsorption in the measurement of specific surface area by four acid and salts treated activated carbons. NY Sci J 3(5):25–33
no DOI — not checkedPatel JB, Sudhakar P (2008) Adsorption of mercury by powdered corn cobs. Electr J Environ Agric Food Chem 7(14):2735–2742
no DOI — not checkedRamachandran VS, Beaudoin JJ (2008) Handbook of analytical techniques in concrete science and technology: principles, techniques and applications. William Andrew, Norwich, pp 564–573
no DOI — not checkedRamesh KC (2014) Reduction of expansive index of kaolinite and bentonite clay using sand and fly ash mixture. Southern minois university at Carbondale, p 146
no DOI — not checkedSocrates G. (1980) Infrared characteristic group frequencies, vol. 30 no.4 Wiley, Chichester-Toronto, pp 1271–1277
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