Physicochemical investigation of mercury sorption on mesoporous thioacetamide/chitosan from wastewater

Mohamed E Eissa; Ahmed K Sakr; Mohamed Y Hanfi; M I Sayyed; Jamelah S Al-Otaibi; Ashraf M Abdel-Lateef; Mohamed F Cheira; Haeam A Abdelmonem

doi:10.1016/j.chemosphere.2023.140062

Physicochemical investigation of mercury sorption on mesoporous thioacetamide/chitosan from wastewater

Chemosphere. 2023 Nov:341:140062. doi: 10.1016/j.chemosphere.2023.140062. Epub 2023 Sep 8.

Authors

Mohamed E Eissa¹, Ahmed K Sakr², Mohamed Y Hanfi³, M I Sayyed⁴, Jamelah S Al-Otaibi⁵, Ashraf M Abdel-Lateef⁶, Mohamed F Cheira⁷, Haeam A Abdelmonem⁸

Affiliations

¹ College of Science, Chemistry Department, Al Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, 11623, Kingdom of Saudi Arabia.
² Department of Civil and Environmental Engineering, Wayne State University, 5050 Anthony Wayne Drive, Detroit, MI, 48202, USA. Electronic address: akhchemist@gmail.com.
³ Ural Federal University, St. Mira, 19, 620002, Yekaterinburg, Russia; Nuclear Materials Authority, P.O. Box 530, El Maadi, Cairo, Egypt.
⁴ Department of Physics, Faculty of Science, Isra University, Amman, 11622, Jordan; Department of Nuclear Medicine Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi Arabia.
⁵ Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia.
⁶ Accelerations and Ion Sources Department, Central Laboratory for Elemental and Isotopic Analysis, NRC, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt.
⁷ Nuclear Materials Authority, P.O. Box 530, El Maadi, Cairo, Egypt. Electronic address: mf.farid2008@yahoo.com.
⁸ Chemistry Department, Faculty of Women for Art, Science, And Education, Ain Shams University, Heliopolis, Cairo, 11757, Egypt.

PMID: 37689155
DOI: 10.1016/j.chemosphere.2023.140062

Abstract

Mercury is a toxic environmental element, so it was necessary to prepare a new, highly efficient, cheap sorbent to remove it. A mesoporous thioacetamide/chitosan (MTA/CS) was manufactured via a simplistic strategy; the chitin deacetylation to gain chitosan (CS) and the addition of thioacetamide. The as-prepared MTA/CS was characterized using X-ray diffraction, EDX, SEM, FTIR, and BET surface analysis. According to the findings, the MTA/CS was effectively synthesized. The removal behaviors of Hg²⁺ onto MTA/CS composite were inspected, which suggested that the MTA/CS composite exhibited great sorption properties for Hg²⁺ in liquid solutions. The maximal Hg²⁺ sorption capacity was 195 mg/g. The effects of temperature, Hg²⁺ concentration, contacting time, and MTA/CS concentration on sorption were analyzed. The 2nd-order model and Langmuir isotherm were suitable for the physicochemical adsorption processes. Thermodynamic analysis showed that the Hg²⁺ adsorption process onto the MTA/CS composite is exothermic and occurred spontaneously. The desorption condition of Hg²⁺ from its loaded MTA/CS was also gained. Likewise, the MTA/CS sorbent was undoubtedly regenerated by 0.8 M NaNO₃ 80 min contacting and 1:50 S:L ratio. The versatility and durability of MTA/CS sorbent were investigated via nine sorption-extraction cycles. The optimum parameters were applied to wastewater. Based on the result, the as-prepared MTA/CS might be a potential sorbent for removing Hg²⁺ from liquid solutions.

Keywords: Chitosan; Mercury; Mesoporous sorbent; Sorption; Thioacetamide; Wastewater.

MeSH terms

Chitin
Chitosan*
Mercury*
Thioacetamide
Wastewater

Substances

Chitosan
Wastewater
Thioacetamide
Chitin
Mercury