![]() Mohanty S, Benya A, Hota S, Kumar MS, Singh S (2023) Eco-toxicity of hexavalent chromium and its adverse impact on environment and human health in Sukinda Valley of India: A Review on pollution and prevention strategies. Masinga T, Moyo M, Pakade VE (2022) Removal of hexavalent chromium by polyethyleneimine impregnated activated carbon: Intra-particle diffusion, kinetics and isotherms. Graphical AbstractĪmbika S, Kumar M, Pisharody L, Malhotra M, Kumar G, Sreedharan V, Bhatnagar A (2022) Modified biochar as a green adsorbent for removal of hexavalent chromium from various environmental matrices: Mechanisms, methods, and prospects. Thus, nanolignin can be used as an adsorbent for the removal of Cr (VI) from wastewater. The kinetic study of Cr (VI) was well represented by pseudo-second order and isotherm data were best fitted with the Langmuir model. The chromium's maximum removal efficiency was 92.8% at acidic pH of 2, nanoadsorbent dosage (0.03 g), and contact time (80 min) as investigated in the batch study. The obtained nanolignin from coconut coir was characterized by particle size analyzer, Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM–EDS), transmission electron microscopy (TEM) and Brunauer–Emmett–Teller (BET). Lignin has been extracted from coconut coir by the soda pulping method and nanolignin was obtained through the ultrasonication method. The removal of chromium using the adsorption technique by green nanomaterial is one of the promising techniques. Several conventional techniques such as membrane separation, coagulation, precipitation, and flocculation are intensively investigated to remove chromium from wastewater. Industries in electroplating, dyes, pigments, and tanning extensively use chromium and its compounds. ![]() Heavy metals such as chromium-loaded wastewater from anthropogenic activities greatly concern the environment and human health. ![]()
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