Effective Removal of Congo Red by Triarrhena Biochar Loading with TiO₂ Nanoparticles

Abstract

A composite of pyrolytic Triarrhena biochar loading with TiO2 nanoparticles has been synthesized by the sol-gel method. The composite shows a well-developed hollow mesoporous and macropore structure as characterized by XRD, BET, and SEM. When used as an absorbent to remove Congo red from aqueous solution, it was found that as-prepared composite performed better absorption capacity than single biochar or TiO2. The results suggest that biochar loading with TiO2 could be promisingly implemented as an environmentally friendly and inexpensive adsorbent for Congo red removal from wastewater.

Sustainable Durio zibethinus-Derived Biosorbents for Congo Red Removal from Aqueous Solution: Statistical Optimization, Isotherms and Mechanism Studies

“…The pore size distribution and the surface area of the biosorbent was obtained using the Barrett-Joyner-Halenda (BJH) and Brunaure-Emmet-Teller (BET) method, respectively [30]. The Pore surface characteristics has been compared to previous studies [31][32][33][34]. The surface properties of the biosorbents are shown in Table 1.…”