Retraction notice to “Deep insights into kinetics, optimization and thermodynamic estimates of methylene blue adsorption from aqueous solution onto coffee husk (Coffee arabica) activated carbon” [Environ. Res. 236-P2 (2023) 116735](S0013935123015396)(10.1016/j.envres.2023.116735)
Deivasigamani P. Kumar P.S. Sundaraman S. Soosai M.R. Renita A.A. M K. Bektenov N. Baigenzhenov O. D V. Kumar J A.
1 October 2025Academic Press Inc.
Environmental Research
2025#282
This article has been retracted: please see Elsevier policy on article withdrawal (https://www.elsevier.com/about/policies-and-standards/article-withdrawal). This article has been retracted at the request of the Editor. Concerns reported on PubPeer at https://pubpeer.com/publications/DFDBC5A0F26AEE4CE657B3C07CD79D# were investigated. The two parts of Fig. 2 in the original and revised versions of the manuscript were quite different, and an error at the proofing stage may have resulted in the duplication of the two parts in the published article. However when asked to explain the similarity, the authors did not recognise that there was any problem, whether deliberate or accidental, which suggests a concerning lack of familiarity with the content of the article. Furthermore, various unauthorised authorship changes were made during revision. At first revision, A. Annam Renita, Nessipkhan Bektenov and Omirserik Baigenzhenov were added whilst Venkatesan D was removed. At second revision Venkatesan D was then added again to replace another author who was removed. Corresponding author Aravind Kumar stated that they “added the authors for revising the manuscript along with grammar editing only”. These authorship changes breach the policies of the journal and as a result, the editor no longer has confidence in this paper and is retracting it. The journal apologises for not having identified the problematic authorship change during the review process and for any resulting inconvenience. Dr J Aravind Kumar does not agree with the retraction and disputes the grounds for it.
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Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Tamilnadu, Chennai, 600119, India
Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Tamilnadu, Chennai, 603110, India
Institute of Natural Sciences and Geography, Abai University, Almaty, 050010, Kazakhstan
JSC «Institute of Chemical Sciences named after A.B. Bekturov», Almaty, 050010, Kazakhstan
Department of Metallurgical Engineering, Satbayev University, Almaty, Kazakhstan
Department of Energy and Environmental Engineering, Saveetha School of Engineering, SIMATS, Tamilnadu, Chennai, 602105, India
Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, Tamil Nadu, 603110, India
School of Engineering, Lebanese American University, Byblos, Lebanon
Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali, 140413, India
Department of Chemical Engineering
Department of Chemical Engineering
Institute of Natural Sciences and Geography
JSC «Institute of Chemical Sciences named after A.B. Bekturov»
Department of Metallurgical Engineering
Department of Energy and Environmental Engineering
Centre of Excellence in Water Research (CEWAR)
School of Engineering
Department of Biotechnology Engineering and Food Technology
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