Removal of malachite green from aqueous solution by activated carbon prepared from the epicarp of Ricinus communis by adsorption

Nanoparticles Loaded Biopolymer as Effective Adsorbent for Adsorptive Removal of Malachite Green from Aqueous Solution

“…It can also be seen that the linear portions of curves do not pass through the origin which indicates that the intraparticle diffusion is not the sole rate controlling step for the adsorption mechanism of MG onto nanocomposite. From the above results, it may be concluded that surface adsorption and intraparticle diffusion were concurrently operating during the adsorbate and adsorbent interactions [30]. …”

Improved removal of malachite green from aqueous solution using chemically modified cellulose by anhydride

“…The low 5 percentage of MG removal on CPA might be related to the relatively small amount of 6 carboxyl groups, resulting in a small number of binding sites toward cation of MG. 7 The lower removal percentage of MG on cellulose surface was due to the absence of 8 carboxyl groups. Kinetic models are used to test experimental data from the adsorption of MG, which 11 is helpful to examine the possible mechanism of adsorption process such as chemical 12 reaction, diffusion control and mass transfer [21]. Two rate equations, 13 pseudo-first-order (PFO, Eq.…”

“…17 Adsorption considered to its high efficiency, simplicity and low-cost, is a widely 18 used method for the treatment of wastewater containing toxic dyes. A variety of 19 adsorbents such as activated carbon, orange peel, deoiled soya, fungus, functionalized 20 sawdust, chitosan bead, polyacrylic acid-clay nanocomposite and so on, have been 21 reported for the removal of MG from wastewater [8]. Cellulose as a polymer matrix M a n u s c r i p t 4 for the synthesis of new adsorbents has been paid to more attention among the 1 different kinds of adsorbents.…”

Thermodynamic and kinetic study of the intrinsic adsorption capacity of graphene oxide for malachite green removal from aqueous solution

“…This method relies on interactions between adsorbent and adsorbate.Thus,a key factor in the adsorption process is the selective adsorbent with its intrinsic functional groups. Several adsorbents that have been studied for removal of malachite green include eggshells 2 , clay 3 , rice husk, bentonite,zeolite,sawdust,rice straw,oil palm trunk fiber,degreased coffee beans,treated ginger waste,hen feathers,chitin hydrogel,chitosan beads, silica gel,acid-activated sintering process red mud, water-soluble melamine/maleic anhydride sorbent [20][21][22][23][24][25][26][27][28][29][30][31][32][33] ,activated carbonand other carbon-based materials [34][35][36][37][38][39][40] .However, because these adsorbents are low in either efficiency or adsorption capacity,new adsorbents have recently been developed that possess high capacity, larger specific surface area and high selectivity.…”