Author
S. Rajgopal
Bio: S. Rajgopal is an academic researcher from Anna University. The author has contributed to research in topics: Freundlich equation & Langmuir. The author has an hindex of 3, co-authored 3 publications receiving 1140 citations.
Papers
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TL;DR: The result shows that the rubber wood sawdust activated carbon can be efficiently used for the treatment of wastewaters containing chromium as a low cost alternative compared to commercial activated carbon and other adsorbents reported.
651 citations
TL;DR: Adsorption mechanism studies revealed that the process was complex and followed both surface adsorption and particle diffusion and the rate-controlling parameter and effective diffusion coefficient were determined using the Reichenberg plot.
545 citations
TL;DR: In this article, the adsorption capacity of rubberwood (Hevea brasiliensis) sawdust by steam and chemical treatments was determined by using iodine number and methylene blue number and surface area by using EME method.
45 citations
TL;DR: An Eight-year-old boy with high grade fever, abdominal pain and vomiting suspected for typhoid and diagnose by serological test (rapid card test), urine analysis and blood culture was diagnosed with typhoid fever.
Abstract: An Eight-year-old boy with high grade fever, abdominal pain and vomiting suspected for typhoid and diagnose by serological test (rapid card test), urine analysis and blood culture were also performed. Rapid card test is very helpful for the detection of IgG and IgM antibodies present in the body in 15-30 minutes of time. With rapid card test and blood culture the patient was diagnosed with typhoid fever. The Ceftriaxone antibiotic was given to patient intravenously for 5 days and the patient recovered. Keywords: enteric fever; typhoid fever; blood culture; serology for typhoid.
3 citations
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TL;DR: The sorption capacities of commercial developed carbons and other low cost sorbents for chromium remediation are provided, and particular attention is paid to comparing the sorption efficiency and capacities of commercially available activated carbons to otherLow cost alternatives.
1,611 citations
TL;DR: In this article, the authors provided the scattered available information on various aspects of utilization of the agricultural waste materials for heavy metal removal, which can be exploited for high efficiency and multiple reuse to enhance their applicability at industrial scale.
1,322 citations
01 Jan 2008
TL;DR: Biosorption is emerging as a potential alternative to the existing conventional technologies for the removal and/or recovery of metal ions from aqueous solutions for heavy metal remediation.
Abstract: Heavy metal remediation of aqueous streams is of special concern due to recalcitrant and persistency of heavy metals in environment. Conventional treatment technologies for the removal of these toxic heavy metals are not economical and further generate huge quantity of toxic chemical sludge. Biosorption is emerging as a potential alternative to the existing conventional technologies for the removal and/or recovery of metal ions from aqueous solutions. The major advantages of biosorption over conventional treatment methods include: low cost, high efficiency, minimization of chemical or biological sludge, regeneration of biosorbents and possibility of metal recovery. Cellulosic agricultural waste materials are an abundant source for significant metal biosorption. The functional groups present in agricultural waste biomass viz. acetamido, alcoholic, carbonyl, phenolic, amido, amino, sulphydryl groups etc. have affinity for heavy metal ions to form metal complexes or chelates. The mechanism of biosorption process includes chemisorption, complexation, adsorption on surface, diffusion through pores and ion exchange etc. The purpose of this review article is to provide the scattered available information on various aspects of utilization of the agricultural waste materials for heavy metal removal. Agricultural waste material being highly efficient, low cost and renewable source of biomass can be exploited for heavy metal remediation. Further these biosorbents can be modified for better efficiency and multiple reuses to enhance their applicability at industrial scale.
1,245 citations
TL;DR: Detailed information and review on the adsorption of noxious heavy metal ions from wastewater effluents using various adsorbents - i.e., conventional (activated carbons, zeolites, clays, biosorbents, and industrial by-products) and nanostructured (fullerenes, carbon nanotubes, graphenes) is presented.
1,053 citations
TL;DR: Coconut husk-based activated carbon was shown to be a promising adsorbent for removal of methylene blue from aqueous solutions and was found to follow closely the pseudo-second-order kinetic model.
995 citations