Pretreated waste Streptomyces fradiae biomass was used as biosorbent to remove tetracycline (TC) from model aqueous solutions. The biosorption study conducted in a batch system evaluate the impact of initial pH, dosage, TC concentration and contact time. Langmuir, Freundlich Dubinin–Radushkevich (D–R) models were applied describe isotherm equilibrium studies. Langmuir fitted data better than D–...

in the present study, different activated carbons were prepared from carbonized african beech wood sawdust by potassium hydroxide activation. the activated carbons were characterized by brunauer–emmett–teller, scanning electron microscope, fourier transform infrared spectroscopy, and thermogravimetric analyzer. the phenol adsorption capacity of the prepared carbons was evaluated. the different ...

in the present work, we have investigated the sorption efficiency of the treated activated carbon from walnut shell(acw) towards direct red 81 (dr81) and direct blue 71 (db71) for the removal from aqueous solution. thesorption study of acw at the solid-liquid interface was investigated using kinetic, sorption isotherms, ph effectand amount of adsorbent. experimental data were analyzed by langmu...

Magnetic graphene oxide nanocomposites (M-GO) were successfully synthesized by partial reduction co-precipitation method and used for removal of Sr(II) Cs(I) ions from aqueous solutions. The structures properties the M-GO was investigated X-ray diffraction, Fourier transformed infrared spectroscopy, photoelectron transmission electron microscopy, scanning vibrating sample magnetometer (VSM) N2-...

the objective of this study was to assess the adsorption potential of activated carbon (ac) asan adsorbent for the removal of murexide (mu) from aqueous solutions. the influence of variablesparameters including ph, amount of adsorbent, sieve size of adsorbent, temperature and contact timeon mu removal was studied. following optimization of variables, the relation between concentrations ofdye re...

The abatement of particulate matter in gasoline direct injection (GDI) engines requires the use filters. In turn, optimisation their regeneration is based on a deep knowledge soot oxidation behaviour. determination intrinsic kinetic parameters GDI explored thermogravimetric analysis (TGA) and reaction rate modelling. New understanding provided enabling an accurate prediction wide range temperat...

The prevalent problems associated with heavy metal contamination of the environment particularly underground and surface wastewater compel need to work on economical means mitigating accumulation metals in by espousing biosorption option. choice this regard is hinged overall cost control process its relative effective outcome compared other diminishing environment. Thus, potential Garden Egg (S...

The Frumkin or Fowler–Guggenheim isotherm, which has three fitting parameters, is often converted to a linear form with two parameters facilitate parameter estimation by regression. This conversion made possible way of replacing the unknown capacity isotherm surrogate value. certain simple isotherms (e.g., Dubinin–Radushkevich) are used as surrogates. However, such surrogates have never been ev...