This study proved that vermiculite, a natural occurring mineral, can effectively remove and stabilize Cr(VI) from fine ferrochrome dust leachate. Batch adsorption studies were carried out to determine the effect of pH, contact time and adsorbent dose on the removal of Cr(VI). The process was found to be highly pH dependent. The optimum conditions for the Cr(VI) removal are at a pH of 1.5, conta...

Boron minerals are very useful for various industrial activities, such as glass industry and detergent industry, due to its mechanical and chemical properties. During the production of boron compounds, many of these are introduced into the environment in the form of waste. Boron is also an important micro nutrient for the plants to vegetate but if it exists in high concentrations, it could have...

Chitosan/feldspar biobased beads were synthesized, characterized, and tested for the removal of Acid Black 1 dye from aquatic phases. A four-factor central composite design (CCD) accompanied by response surface modeling (RSM) and optimization was used to optimize the dye adsorption by the adsorbent (chitosan/feldspar composite) in 31 different batch experiments. Independent variables of tempera...

In this work the individual and combined effect of four process parameters, i.e. initial copper (II) concentration, adsorbent dose, initial solution pH, and contact time on the adsorption of copper (II) from aqueous solution were studied by neem bark powder (NBP) using response surface methodology (RSM) approach based on central composite design (CCD). Copper (II) removal is maximum at the pH: ...

Fe(III)–chitosan microbeads (Fe–CTB) were prepared using a chemical coprecipitation method. SEM–EDX, FTIR, XRD, TGA, BET, and pH pzc performed for the characterization of adsorbent. Various parameters optimized as pH, adsorption time, adsorbent dose, initial Cr(VI), PO43− ion concentration effect assorted ions studies. Fe–CTB revealed more than 80% detoxification 100 mg L−1 at 3 with 60 min sti...

Magnetized iron oxide nanoparticles (NPs) were prepared using Eucalyptus leaf extract and then coated with CTAB (Cetrimonium bromide) to increase efficiency. The modified characterized AFM, FTIR, X-ray techniques. adsorption of the dye reactive blue RB 238 on was investigated. effect various experimental factors, such as initial concentration dye, amount adsorbent, pH temperature removal RB238 ...

Ginger waste material (GWM) has been utilized as adsorbent for removal of hazardousPatent Blue VF (PBVF) dye from aqueous solution. Batch adsorption experiments wereperformed as a function of pH, contact time, dye concentration, adsorbent dose and temperature.The optimum pH required for the maximum adsorption was found to be 2. The experimentalequilibrium adsorption data were tested using Langm...

In this study, a new adsorbent, which was synthesized by using SBA-15Santa Barbara Amorphous. modified with 1,5-diphenyl carbazide, employed to extract cadmium (Cd) from aquatic systems. First, the sorbent identified via various characterization techniques, and then response surface methodology approach applied for modeling optimizing adsorption performance of sorbent. Under optimum conditions ...

introduction conventional water treatment consist of unit processes include coagulation, flocculation, clarification, filtration and disinfection that goal is removal of turbidity, color and certain bacterial species. in filtration process flocculated substances that have not removed in pervious stage are sediment. filter media is often silica sand that removal mechanism is complex and consists...