Synthesis and adsorption behavior of magnetic microspheres based on chitosan/organic rectorite for low-concentration heavy metal removal

Magnetic calcinated cobalt ferrite/magnesium aluminum hydrotalcite composite for enhanced adsorption of methyl orange

“…Among these methods, adsorption, using solid supports, is considered as a quite attractive method for dyes removal due to its high removal efficiency, cost-effective, simplicity of design and operation, and no secondary pollution [11]. The key to practical application of adsorption lies in the high surface area for more binding sites and easy separation property of adsorbent from aqueous solution.…”

Different Insights into Silicate Rectorite Modification and Its Role in Removal of Heavy Metal Ions from Wastewater

“…Its special structure is alternate pairs of dioctahedral mica-like layer (non-expansible) and dioctahedral smectite-like layer (expansible) existing in 1:1 ratio. There are some cations (Na + , K + and Ca 2+ ) and hydrated cations with exchangeability, which can enlarge its interlayer distance by intercalating cations or polar molecules existing in the interlayer regions.Over several decades, there are more and more investigations on the adsorption of metal ions by REC or its synthesis [17][18][19][20][21]. For example, Mei et al [17] and Zhao et al [22] studied separately the adsorption behaviors of Pb(II) by Ca-rectorite and Sr(II) by Na-rectorite as a function of different environmental parameters including the influence of pH, temperature, ionic strength and humic acid (HA) under ambient conditions.…”

“…Both of them found that the adsorption results of heavy metals were intensely decided by pH and ionic strength and the adsorption process was spontaneous and endothermic. In addition, more and more synthetic composite materials of REC have been researched to adsorb different pollutants [18][19][20]23]. These composites can combine both excellent performances of their components, such as good thermostability, mechanical property and adsorption capacity, the synergies can help them obtain superior adsorption capacity to heavy metal ions [24].…”

Avaliação da adsorção de cromo em quitosana submetida a tratamento com líquidos iônicos

“…As amostras foram analisadas em porcentagem de transmitância com resolução de 4 cm -1 (ANDRADE NETO et al, 2016;XIE et al, 2015 …”

“…Porém, essa interação pode ser influenciada pelo tamanho do cátion, bem como pela presença de ramificações (ELIODÓRIO et al, 2017 devido a interação das cadeias biopoliméricas com os LIs (PAVIA et al, 2010;XIE, 2015;LI et al, 2015).…”