Use of sulfuric acid-carbonization materials from grape pulp for the removal of hexavalent chromium (Cr(VI)): mechanism and characterization
 
Yazarlar (2)
Hasan Arslanoğlu Çanakkale Onsekiz Mart Üniversitesi, Türkiye
Prof. Dr. Harun ÇİFTÇİ Kırşehir Ahi Evran Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı International Journal of Phytoremediation (Q2)
Dergi ISSN 1522-6514 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili Türkçe Basım Tarihi 09-2021
Kabul Tarihi 12-04-2026 Yayınlanma Tarihi
Cilt / Sayı / Sayfa 23 / 11 / 1145–1156 DOI 10.1080/15226514.2021.1880368
Makale Linki http://dx.doi.org/10.1080/15226514.2021.1880368
Özet
This study investigated the reduction of hexavalent chromium (Cr(VI)) with sulfur dioxide (SO2) and adsorption of Cr(VI) onto dried grape pulp carbonized with sulfuric acid. Cr(VI) reduction capacities of SO2 were determined. The filtrate was titrated with NaOH solution after shaking and filtering the carbonized material to retain unreacted sulfuric acid (H2SO4). Simple washing recovered 25–38% of the experimental acid at low concentrations. The carbonized material was washed twice with distilled water and then dried at 105 °C and weighed. The carbonized material had a yield of 56.6% (grape pulp/sulfuric acid ratios of 1:2), and the lower the H2SO4 content, the better the yield, suggesting that the higher the acid content, the lower the Cr(VI) content per unit grape pulp. Cr(VI) reduction capacities were 219.5, 195.3, and 190.9 mg Cr(VI)/g-H2SO4 for the grape pulp/sulfuric acid ratios of 1:1, 1:2, and 1:3, respectively …
Anahtar Kelimeler
Cr(VI) adsorption-isotherm-kinetic-thermodynamic | Cr(VI) reduction | Grape pulp-carbonization-carbon