- Lucknow, Uttar Pradesh, India
The novelty of work lies in the green synthesis of KZnHCF nanocubes using natural surfactant and impact on photocatalytic degradation.
Research Interests:
Research Interests:
Arsenic contamination of groundwater in different parts of the world is an outcome of natural and/or anthropogenic sources, leading to adverse effects on human health and ecosystem. Millions of people from different countries are heavily... more
Arsenic contamination of groundwater in different parts of the world is an outcome of natural and/or anthropogenic sources, leading to adverse effects on human health and ecosystem. Millions of people from different countries are heavily dependent on groundwater containing elevated level of As for drinking purposes. As contamination of groundwater, poses a serious risk to human health. Excessive and prolonged exposure of inorganic As with drinking water is causing arsenicosis, a deteriorating and disabling disease characterized by skin lesions and pigmentation of the skin, patches on palm of the hands and soles of the feet. Arsenic poisoning culminates into potentially fatal diseases like skin and internal cancers. This paper reviews sources, speciation, and mobility of As and global overview of groundwater As contamination. The paper also critically reviews the As led human health risks, its uptake, metabolism, and toxicity mechanisms. The paper provides an overview of the state-of-the-art knowledge on the alternative As free drinking water and various technologies (oxidation, coagulation flocculation, adsorption, and microbial) for mitigation of the problem of As contamination of groundwater.
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Samples of polluted soil contaminated with used motor oil spillage were collected to study whether such soils may be remediated, i.e. whether the remediation of hydrocarbon contaminated soil is achievable using microbial strain sampled... more
Samples of polluted soil contaminated with used motor oil spillage were collected to study
whether such soils may be remediated, i.e. whether the remediation of hydrocarbon
contaminated soil is achievable using microbial strain sampled from the same site where from
the contaminated soil has been collected for isolating bacterial strains. Sampled soil has been
divided in to two sets and the one set of the two was inoculated with the isolated microbial strain
(treated sample) and the other set left as such without any inoculation (untreated). The
inoculation of microbial strain was performed after assessing the water holding capacity of the
sampled soils. FTIR spectra were obtained of the untreated samples and have been referred in
the study as zero day. Spectra of treated samples were obtained on 12th day of incubation and on
25th day of incubation. A comparison of FTIR spectra of treated (12th day and 25th day) and
untreated soil revealed the presence of new bands pertaining to aliphatic and polycyclic
aromatic hydrocarbons including various alcohols, aldehydes and ketones. The isolated
bacterial strain seems to have substantial potential to remediate the hydrocarbon contamination
of the soil and indicate signs of bioremediation of soils contaminated with used motor oil.
whether such soils may be remediated, i.e. whether the remediation of hydrocarbon
contaminated soil is achievable using microbial strain sampled from the same site where from
the contaminated soil has been collected for isolating bacterial strains. Sampled soil has been
divided in to two sets and the one set of the two was inoculated with the isolated microbial strain
(treated sample) and the other set left as such without any inoculation (untreated). The
inoculation of microbial strain was performed after assessing the water holding capacity of the
sampled soils. FTIR spectra were obtained of the untreated samples and have been referred in
the study as zero day. Spectra of treated samples were obtained on 12th day of incubation and on
25th day of incubation. A comparison of FTIR spectra of treated (12th day and 25th day) and
untreated soil revealed the presence of new bands pertaining to aliphatic and polycyclic
aromatic hydrocarbons including various alcohols, aldehydes and ketones. The isolated
bacterial strain seems to have substantial potential to remediate the hydrocarbon contamination
of the soil and indicate signs of bioremediation of soils contaminated with used motor oil.
Research Interests:
The effect of different metal ions and two redox mediators on laccase activity and laccase-catalyzed decolorization of five synthetic dyes was investigated in vitro using crude laccase from a novel white rot fungus Peniophora sp.... more
The effect of different metal ions and two redox mediators on laccase activity and
laccase-catalyzed decolorization of five synthetic dyes was investigated in vitro using crude
laccase from a novel white rot fungus Peniophora sp. (NFCCI-2131). The fungus effectively
decolorized crystal violet and brilliant green on malt extract agar medium. Laccase activity was
enhanced by metal ions such as Cd2+, Mn2+, Ni2+, Co2+, Na+ Ca2+, and Cu2+. Among the
different dyes tested, highest decolorization of crystal violet (96.30 %) was obtained in the
presence of 1 mM ABTS followed by 86.01 % by HBT. The results conspicuously indicated
that laccase from Peniophora sp. has the potential for color removal from textile dye effluent
even in the presence of toxic metal ions.
laccase-catalyzed decolorization of five synthetic dyes was investigated in vitro using crude
laccase from a novel white rot fungus Peniophora sp. (NFCCI-2131). The fungus effectively
decolorized crystal violet and brilliant green on malt extract agar medium. Laccase activity was
enhanced by metal ions such as Cd2+, Mn2+, Ni2+, Co2+, Na+ Ca2+, and Cu2+. Among the
different dyes tested, highest decolorization of crystal violet (96.30 %) was obtained in the
presence of 1 mM ABTS followed by 86.01 % by HBT. The results conspicuously indicated
that laccase from Peniophora sp. has the potential for color removal from textile dye effluent
even in the presence of toxic metal ions.