▎ 摘　　要

2,4,6-Trinitrophenol (TNP), an explosive utilized for artillery munitions, ends up polluting water and soil. This study targets the treatment of TNP contaminated water via adsorption technique. A comparative adsorption study using pristine rGO (reduced graphene oxide), alpha-Fe2O3/rGO, bare alpha-Fe2O3 and physical mixture of alpha-Fe2O3 & rGO has been carried to select the most suitable adsorbent. To understand the mechanism of adsorption of TNP on alpha-Fe2O3/rGO adsorption isotherms were applied on adsorption data. The adsorption kinetics followed pseudo second order kinetic model. The mechanism of adsorption changed significantly with change in pH. The maximum adsorption capacity was found to be 769.23 mg center dot g(-1). Regeneration studies indicated that the adsorbent can be used up to 3 times without significant decrease in adsorption efficiency. Magnetic nature of adsorbent allowed its easy segregation from the contaminant solution upon application of external magnetic field. To assess the adsorption efficacy of alpha-Fe2O3/rGO in real water under ambient condition, TNP was spiked in ground water samples collected from adjoining district that had high TDS (Total dissolved solids). The Langmuir adsorption capacity of 164.24 mg center dot g(-1) was attained with substantial decrease in TDS. Thus alpha-Fe2O3/rGO proves to be an efficient adsorbent for nitrophenols and can be used commercially for waste water treatment.