Nadavala Siva Kumar

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The biosorption of nickel(II) ions from aqueous solution by Acacia leucocephala bark was studied in a batch adsorption system as a function of pH, initial metal ion concentration, adsorbent dosage, contact time and temperature. The maximum Ni(II) adsorption was obtained at pH 5. Further, the biosorbents were characterized by Fourier Transformer Infrared(More)
A rare case of papillary carcinoma of the thyroglossal duct remnant with Hashimoto's thyroiditis of the nonneoplastic ectopic thyroid tissue and the thyroid gland is described. The need for fine-needle aspiration cytologic examination in the management is stressed. The prognosis is excellent when the tumor is limited to the ectopic thyroid tissue and(More)
Biosorption of 2,4,6-trichlorophenol (2,4,6-TCP) from aqueous solution by biomass prepared from Acacia leucocephala bark, an agricultural solid waste has been investigated in the present study. All the experiments are carried out by batch mode technique. The resulting biosorbent was characterized by Fourier transform infrared spectroscopy (FTIR) and(More)
Strychnos potatorum seeds (cleaning nuts or nirmali) are extensively used by remote village tribals in the state of Andhra Pradesh, India for clarification of turbid and metal contaminated water. In the present study the ability of seed proteins to bind aqueous cadmium has been investigated. Biochemical characterization of the seed powder revealed the(More)
The present study describes the development of a new bioadsorbent from lignocellulosic wastes of agricultural origin. The biosorption capacity of an agricultural solid waste, pine bark (Pinus densiflora Sieb.), to remove phenolic compounds (phenol, 2-chlorophenol (2-CPh), and 4chlorophenol (4-CPh)) from aqueous solutions under batch equilibrium conditions(More)
The galactose-specific lectin from the seeds of Dolichos lablab has been crystallized using the hanging-drop vapour-diffusion technique. The crystals belong to space group P1, with unit-cell parameters a = 73.99, b = 84.13, c = 93.15 A, alpha = 89.92, beta = 76.01, gamma = 76.99 degrees. X-ray diffraction data to a resolution of 3.0 A have been collected(More)
This paper investigates the adsorption characteristics of palm oil boiler mill fly ash (POFA) derived from an agricultural waste material in removing Cd(II) and Cu(II) from aqueous solution via column studies. The performance of the study is described through the breakthrough curves concept under relevant operating conditions such as column bed depths (1,(More)
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