Adsorption to GAC is an effective ·method for removing high explosives (HE) compounds from water, but no permanent treatment is achieved. Bioregeneration, which treats adsorbed contaminants by desorption and biodegradation, is being developed as a method for reducing GAC usage rates and permanently degrading RDX and HMX. Because desorption is often the limiting mass transfer mechanism in bioreg...

Lignite based granular activated carbon of 20x30 mesh size was used to investigate the extent of bioregeneration of phenol and 2,4-DCP in a batch system. The adsorption isotherm fits very well with the Freundlich isotherm and it is apparent that 2,4-DCP is more adsorbable than phenol. The degree of reversible adsorption for phenol and 2,4-DCP were 32.9 and 10.6 %, respectively. The low percenta...

Drinking water biofiltration offers the possibility of removal trace level micropollutants from source water. Sand, granular activated carbon (GAC), GAC sandwich (a layer loaded in middle sand bed), and anthracite-sand dual biofilters were set-up duplicate at bench-scale to mimic filtration process real drinking treatment works. During 3-month system operation, five antibiotics (amoxicillin, cl...

The ample increase in water scarcity and depletion of natural resources due to their overconsumption the contamination sources becomes more challenging day by day. This situation has pushed scientific community cope with it providing alternative solutions. Therefore, is indeed important conduct a sustainable study on recycling wastewater for particular purpose. Taking this into account, an effo...

Langmuir and Freundlich isotherm adsorption models were used to predict iron lead removal from automobile workshop stormwater runoff. Combined low-cost filter systems consisting of granular activated carbon–rice husk (GAC–RH) river gravel–granular carbon (GR–GAC) in this study. The effects adsorbent dosage contact time on the capacity adsorbents, as well efficiencies systems, also investigated....

The present study investigated the influence of packing material characteristics on the electricity generation performance, treatment efficiency and degradation mechanism of petroleum pollutants over microbial fuel cells (MFCs) using petroleum refinery wastewater (PRW) as fuel. The granule graphite (GG) and granule-activated carbon (GAC) were used to MFCs as packing materials, respectively. GG-...

The study of the influence operating parameters dynamic adsorption on fixed-bed column manganese oxoanions (MnO4-) in aqueous media granular activated carbon (GAC), prepared from shells palm nuts Gabon, was carried out. studied were particle size, concentration initial solution (C0) MnO4-, flow rate (D) and pH media. results obtained show that best capacities at saturation (Qsat) MnO4- ion CAG ...

Soil-washing is a potential technology for the disposal of soil contaminated by e-waste; however, produced soil-washing effluent will contain polybrominated diphenyl ethers (PBDEs) and large number surfactants, which are harmful to environment, so treatment PBDEs recycling surfactants key application technology. In this study, coconut shell granular-activated carbon (GAC) was applied remove fro...

Prechlorination is used as an initial step in water purification for public supply. One of the drawbacks of the prechlorination is the reaction between natural organic matters with chlorine forming trihalmethanes. This study aims at evaluating the performance of granular activated carbon (GAC) with sand as a dual filtering media with different depths on removal of trihalomethanes (THMs) for imp...