Authors :
Rajesh Vanshpati; Jitendra Kumar Shrivastava; Rakhi Baghel
Volume/Issue :
Volume 7 - 2022, Issue 10 - October
Google Scholar :
https://bit.ly/3IIfn9N
Scribd :
https://bit.ly/3DevjkF
DOI :
https://doi.org/10.5281/zenodo.7226951
Abstract :
Heavy metal contamination in water is one of
the world's most severe environmental and ecological
issues. Mining, agricultural, and industrial activities
contribute to stream heavy metal contamination. The
Environmental Protection Agency has classified
chromium as one of the most toxic and hazardous
metals. Chromium is removed from aqueous solutions
and industrial effluents in various ways. Various
adsorbents are utilized to remove Cr(VI) metal from
wastewater. The removal of chromium from wastewater
using adsorbents has seen significant advances in
efficiency and cost. However, the recycling of utilized
adsorbents received little attention. When the chromium
concentration is low (1–100 mg/l), current approaches to
extract chromium ions from wastewaters are costly and
unsuccessful. As a result, developing alternative
technologies is critical right now. Adsorption system that
uses dead biomass to collect chromium in wastewater
can be utilized to replace traditional processes for
chromium contamination remediation. adsorbents are
made from biomass that arepresent in abundance as
waste is a step toward a prospective method because of
its high absorption capacity and low-cost raw material
source. This review article will discuss various
agricultural waste-based adsorbents and their
regeneration techniques for the effective removal of
Cr(VI) from the aqueous solution in an cost effectiveand
ecofriendly approach.
Keywords :
Adsorption, Low-cost sorbent, Chromium (VI) removal, adsorbent regeneration, eco-friendly adsorption.
Heavy metal contamination in water is one of
the world's most severe environmental and ecological
issues. Mining, agricultural, and industrial activities
contribute to stream heavy metal contamination. The
Environmental Protection Agency has classified
chromium as one of the most toxic and hazardous
metals. Chromium is removed from aqueous solutions
and industrial effluents in various ways. Various
adsorbents are utilized to remove Cr(VI) metal from
wastewater. The removal of chromium from wastewater
using adsorbents has seen significant advances in
efficiency and cost. However, the recycling of utilized
adsorbents received little attention. When the chromium
concentration is low (1–100 mg/l), current approaches to
extract chromium ions from wastewaters are costly and
unsuccessful. As a result, developing alternative
technologies is critical right now. Adsorption system that
uses dead biomass to collect chromium in wastewater
can be utilized to replace traditional processes for
chromium contamination remediation. adsorbents are
made from biomass that arepresent in abundance as
waste is a step toward a prospective method because of
its high absorption capacity and low-cost raw material
source. This review article will discuss various
agricultural waste-based adsorbents and their
regeneration techniques for the effective removal of
Cr(VI) from the aqueous solution in an cost effectiveand
ecofriendly approach.
Keywords :
Adsorption, Low-cost sorbent, Chromium (VI) removal, adsorbent regeneration, eco-friendly adsorption.
