The adsorption behavior of rice husk for cadmium ions from aqueous solutions has been investigated as a function appropriate equilibrium time, adsorbent dose, temperature, adsorbate concentrations and pH in batch system. Studies showed that the affected removal with result efficiency increased increasing solution pH. maximum was 98.65% at 6, contact time 60 min initial concentration 25 mg/L. experimental data were analysed by Langmuir, Freundlich Temkin models adsorption. characteristic...

Sulfated zirconia (SZ) is a widely used catalyst, which synthesized by solvent free method and the catalyst has been characterized. Neem Methyl Ester (Biodiesel) was prepared two-step process of esterification transesterification from oil with methanol in presence catalyst. Acid for alkali (KOH) reaction. Optimal Free Fatty (FFA) conversion achieved using 1 wt% SZ as an acid methanol-to-oil molar ratio 9:1, temperature 65ºC reaction time 2 h. The value reduced to 94% raw (24.76 mg KOH/g),...

Abstract This paper discusses about the adsorption of metal ions such as Cu(II), Cd(II), Zn(II), and Ni(II) from aqueous solution by sulfuric acid treated cashew nut shell (STCNS). The process depends on pH, adsorbent dose, contact time, initial concentration, temperature. kinetics was relatively fast equilibrium reached at 30 min. follows Langmuir isotherm model. maximum capacity values modified (CNS) for were 406.6 mg/g 436.7 455.7 456.3 Ni(II). thermodynamic study shows onto STCNS...

Abstract Cashew nut shell (CNS) is an agricultural waste was investigated as a new adsorbent for the removal of zinc(II) from aqueous environment. Effects solution pH, CNS dose, contact time, initial concentration and temperature on efficiency were tested optimum conditions evaluated. The equilibrium data fitted well with Langmuir isotherm model pseudo‐second‐order kinetic model. monolayer adsorption capacity examined 24.98 mg/g. Changes in standard Gibbs free energy (▵ G °), enthalpy H °)...

A great deal of works has been carried out assessing dye-decolorization capabilities fungi, but only few species were investigated. In this present study, ten fungal screened for laccase activity by indicator plate method, which five found to be laccase-positive. Laccase varied during growth and maximal was observed the 9th day, except Agaricus bisporus. Pleurotus ostreatus gave highest activities, showing average value around 570 U/L, higher than other strains. Addition 1 mM copper sulphate...

Abstract A reconstituted collagen scaffold impregnated with silver sulfadiazine (SSD) loaded alginate microspheres, capable of delivering the drug in a controlled manner has been developed. SSD‐loaded microspheres were prepared by modified water‐in‐oil emulsion technique through interfacial ionic gelation using CaCl 2 . The pepsin‐solubilized collagen, situ , while inducing fibrillation and cast as thin scaffold. Morphological features microsphere‐impregnated analyzed SEM. Distribution...

Abstract The use of peptide‐based drugs is limited by their rapid degradability and toxicity at high concentration during therapeutic application. These problems could be managed the a peptide delivery agent for sustained release in site action. Collagen one most proven biomaterials good biocompatibility with an exceptional ligand encapsulating property. In this work, we have shown that pexiganan, antimicrobial, 22‐amino‐acid incorporated delivered to wound‐healing against bacterial strains...

Abstract We used a novel approach to purify Pleurotus ostreatus laccase using the three phase partitioning (TPP) methodology. The aim of our research was study effect TPP parameters on purity and yield. response surface methodology (RSM) has been applied design experiments evaluate interactive effects most important operating variables: ammonium sulphate saturation (w/v) (20–80%), ratio crude extract t-butanol (v/v) (1:1 1:3), temperature (20–60°C). Using this methodology, optimum values for...

Removal of Cr(VI) ions from aqueous solution was investigated using activated carbon obtained acid modified (AMCAC) and unmodified corncorb (UMCAC) by batch adsorption technique at 30°C. H 2 SO 4 10 N , 20 30 concentrations were used for the modification carbon. The effect different parameters, such as pH, initial ion concentration, contact time, adsorbent dosage studied. effective maximum removal pH 6.0, equilibrium attained in 60 min. Kinetic studies show that pseudo‐second‐order kinetic...

Abstract Inulinase (2, 1‐β‐ D ‐fructan fructanohydrolase, EC 3.2.1.7) hydrolyses inulin into nearly pure fructose, which is an excellent alternative for the production of fructose syrup. Growing inulinase utilization in different industries encourages search high benefit/cost ratio purification techniques such enzymes. Here, we adapted three‐phase partitioning (TPP) technique downstream process obtained from Aspergillus niger . TPP a simple non‐chromatographic used and concentration protein....

Abstract Aromatic polyamides and polythioamides with pendent chlorobenzylidine rings were synthesized through direct polycondenzation of 2‐( p ‐chlorobenzalimino) terephthalic acid the diamines 4,4′‐oxidianiline (1a), 4,4′‐methylenediamide (1b), 4,4′‐diaminodiphenyl sulfone (1c), thioamines 4,4′‐(bisthiourea) diphenyl ether (3a), methane (3b), (3c), respectively, in DMF using P(OPh) 3 /pyridine. The polymers precipitated water as nonsolvent. FTIR 1 H‐NMR spectroscopic analysis was used to...

A series of novel ladder-type poly(azomethine amide)s (PAMs) were prepared from new azomethine containing carboxylic acid monomer (TCA) with simple aromatic diamines and thiourea groups (TDAs) by means phosphorylation polycondensation reaction. Molecular weights the polyamides evaluated viscometrically, inherent viscosities in range 0.31 - 0.58 g/dl. These polymers not freely soluble common organic solvents. Structure monomers confirmed using FT-IR, 1H-NMR 13C-NMR spectroscopic analysis....