Effect of Carbonization Time of Mesoporous Carbon in the Dyes Adsorption: Rhodamine B, Methylene Blue and Carmine

Abstract

Study of dyes adsorption (rhodamine B, methylene blue and carmine) carried out by using mesoporous carbon synthesized at various carbonization time. The purpose of this research was to understand influence of carbonization time to performance of the mesoporous carbon in dyes adsorption. In addition, adsorption performance of the mesoporous carbon and commercial carbon were compared. The adsorption test were conducted at conditions: 0.1 g of adsorbent, 25 mL of dyes solutions 100 ppm and shaking rate 125 rpm for 4 hour. Filtrate was used to determine remain concentration of the dyes with UV-visible spectrophotometry. Result of the research showed that the carbonization time from 1 to 3 hours improved the adsorption, whereas from 3 to 5 hours decreased it. The best character of the mesoporous carbon obtained at carbonization time of 3 hours with adsorption values of 96.43 ± 0.37 % for rhodamine-B, 38.80 ± 1.44 % for methylene blue and 48.51 ± 1.55 % for carmine. The adsorption values of the mesoporous carbon were 0.97 times for rhodamine B, 0.48 times for carmine, and 0.39 times for methylene blue compared with the commercial activated carbon.

Comparison Study of PHBA-intercalated Mg/Al-LDH and PHBA-immobilized Mg/Al-LDH: Characterization and Application for [AuCl4]̄ Removal from Solution

“…So, the number of active sites for [AuCl 4 ]increased. On the other hand, as previously indicated, PFO will prevail in conditions where the initial adsorbate concentration is much higher than the number of available adsorbent active sites [34][35][36][37][38]. The presence of Au (0) as a result of reduction process [AuCl4] ‾ by PHBA-intercalated Mg/Al-LDH and PHBA-immobilized Mg/Al-LDH could be known by comparing the visual appearance of the two hybrid materials between before and after the removal process [AuCl 4 ] ‾ using a stereo photomicroscope as shown by Figure 6.…”

Pengembangan TiO2 nanowire terdoping Nikel Kobalt sebagai Fotokatalis yang Efisien untuk Menghilangkan Pewarna Tartrazine

“…Cobalt (Co) and nickel (Ni) doping on TiO2 has several roles in improving photocatalytic performance, including: Increase Light utilization Efficiency: Cobalt and nickel doping can modify the structure and electronic properties of TiO2, resulting in better light absorption over a wider spectrum range (Nazir et al, 2021); Enhances the Formation of Electron-Hole Pairs: Cobalt and nickel can act as additional impurities or reaction sites in the TiO2 crystal structure, facilitating the formation of electron-hole pairs that participate in redox reactions and promote the degradation of target organic compounds (Misriyani et al, 2020;X. Zhang et al, 2021); Improving Electron Transfer Efficiency: Cobalt and nickel doping can increase the efficiency of electron transfer from TiO2 to target compounds, such as tartrazine (Jensen et al, 2015;Jiang et al, 2015;Subramanian et al, 2008).…”

Investigation of Adsorption Isotherm Models for Interaction of P(AAm-ClAETA) and Carminic Acid, and Theoretical Approaches

“…Dyes, which are used in large quantities as colorants in paper, printing and textiles, plastics and paints, excessively pollute domestic and agricultural waters. A paramount variety of adsorbents have been used, manufactured and designed to remove these pollutants [1][2][3][4][5][6][7][8][9][10].…”

“…In the literature, some adsorbents such as 4.03 mg g -1 on glass powder [2], 33.44 mg g -1 on (CuAl-CLDH/CNT/PVDF400) composites [3], 10.10 mg g -1 on activated carbon [5], 48.5 mg g -1 on mesoporous carbon [6], 148 mg g -1 on Prunus mahaleb bark [7] have been reported to be used for removal of carminic acids.…”