Record Details

Heavy metals remediation of water using plant and lignocellulosic agrowastes

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Heavy metals remediation of water using plant and lignocellulosic agrowastes
Not Available
 
Creator K.K.Krishnani
S.Ayyappan
 
Subject Heavy Metals as Health Hazard to the Aquatic Environment
Plant Remediation as Alternative to Chemical Technologies
Using Nonliving Biomass
Using Lignocellulosic Agrowastes
Adsorption Capacities of Sorbents
Langmuir or Freundlich Isotherms Versus NICA–Donnan Model
 
Description Not Available
Metals in the environment arise from natural sources or directly or indirectly
from human activities such as rapid industrialization, urbanization, and
anthropogenic sources, threatening the environment and human health
(Nriagu 1979). Mining and metallurgical activities produce wastewaters that
can be considered as the major source of heavy metal contamination of
natural waters (Schalcsha and Ahumada 1998; Reddad et al. 2002a). In the
United States alone, more than 50,000 metal-contaminated sites await reme diation, many of them Superfund sites (Ensley 2000). They are potential
hazards to aquatic, animal, and human life because of their toxicity and
bioaccumulative and nonbiodegradable nature (Zuane 1990). Nonessential metals such as Hg, Cd, Cr, Pb, As, and Sb are toxic in their chemically combined forms as well as the elemental form (Manahan 1993).Acute metal poisoning in humans causes severe dysfunction in the renal, reproductive, and nervous systems, and chronic exposures even at low concentrations in the environment can prove to be harmful to human health (Wyatt et al. 1998). In
addition, heavy metals that are discharged from a wide variety of industries such as electroplating, metal finishing, leather tanning, chrome preparation,
production of batteries,phosphate fertilizers,pigments,stabilizers,and alloys to the aquatic environment have adverse impacts on aquatic species because
they are conserved pollutants that are not subject to bacterial attack or other
breakdown and remain as permanent additions to the marine environment
(MacCarthy et al. 1995; El-Nady and Atta 1996). They are dangerous to
aquatic animals because they tend to bioaccumulate and cause physiological
defects and histopathological manifestations in tissues, resulting in reduced
reproduction (Gardner 1975; Cutter 1991; Joseph et al. 2002; Krishnani et al.
2003a). Once mobile in the environment in ionic form, they find their way
into the human body through drinking water, food, and air. There is a reasonable chance of having a fair amount of toxic metals in the body if a person has eaten fish regularly, has amalgam fillings, has received vaccinations, has drunk contaminated water, or been involved in industrial or agricultural work or pharmaceutical manufacturing.
Not Available
 
Date 2023-09-25T10:17:00Z
2023-09-25T10:17:00Z
2006-01-01
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/80553
 
Language English
 
Relation Not Available;
 
Publisher Not Available