A Novel Nanoporous Adsorbent for Pesticides Obtained from Biogenic Calcium Carbonate Derived from Waste Crab Shells.

ABSTRACT: A novel nanoporous adsorbent was obtained through the thermal treatment and chemical wash of the wasted crab shells (BC1) and characterized by various techniques. The structure of BC1 at the end of the treatments comprised a mixture of calcite and amorphous CaCO₃, as evidenced by X-ray diffraction and Fourier transform infrared absorption. The BET surface area, BET pore volume, and pore diameter were 250.33 m² g^-1, 0.4 cm³ g^-1, and <70 nm, respectively. The point of zero charge of BC1 was determined to be around pH 9. The prepared adsorbent was tested for its adsorption efficacy towards the neonicotinoid pesticide acetamiprid. The influence of pH (2-10), temperature (20-45 °C), adsorbent dose (0.2-1.2 g L^-1), contact time (5

SUBMITTER: Nekvapil F 

PROVIDER: S-EPMC10707880 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature