Efficient removal of coomassie brilliant blue R-250 dye using starch/poly(alginic acid-cl-acrylamide) nanohydrogel

Abstract

In this study, we have synthesized a starch/poly(alginic acid-cl-acrylamide) nanohydrogel (ST/PL(AA-cl-AAm) NHG) by co-polymerization method which was used as an effective adsorbent for the removal of coomassie brilliant (CB) blue R-250 dye from the aqueous solution. The synthesized nanohydrogel was characterized by FTIR, SEM and TEM techniques. The effect of initial dye concentration, temperature, and agitation time on the adsorption ability of the nanohydrogel was studied comprehensively. The experimental outcomes exhibited that the prepared nanohydrogel had high adsorption tendency to remove the CB from the aqueous solution. The regression coefficient values for Langmuir (0.99), Frendluich (0.93) and Tempkin (0.98) recommended that adsorption process fit to langmuir isotherm. The pseudo-second-order equation showed the better adsorption kinetics of the adsorption process. The feasibility of CB adsorption onto ST/PL(AA-cl-AAm) NHG was also studied thermodynamically and the results indicated that the adsorption was spontaneous and chemical in nature.

Phosphate uptake behavior and mechanism analysis of facilely synthesized nanocrystalline Zn‐Fe layered double hydroxide with chloride intercalation

“…The peak at 713 cm −1 was caused by the out‐of‐plane bending mode in Zn(OH)Cl . The strong and broad peaks around 1620 and 3500 cm −1 were assigned to stretching and bending vibrations of hydrogen‐bonded hydroxyl groups from the hydroxide layers or interlayer water, which possessed typical characteristics of LDH materials . The peak at 2360 cm −1 was assigned to the stretching vibration peak of carbon dioxide.…”

Efficient Removal of Diclofenac from Aqueous Solution by Potassium Ferrate-Activated Porous Graphitic Biochar: Ambient Condition Influences and Adsorption Mechanism

“…Among them, a higher value correlation coefficient was obtained from the Pseudo second-order model and it is in good agreement with experimental data: the calculated value of q e (92.5 mg·g −1 ) was near to experimental value (90.35 mg·g −1 ). Thus, fitting results suggested that adsorption rate of DCF correlated with chemical reaction/chemisorption [55]. In addition, Pseudo second-order proposed that the rate of adsorption for Fe@BC was affected by the availability of the sorption sites rather than the DCF solution concentration [56].…”

Nutraceutical industrial chillies stalk waste as a new adsorbent for the removal of Acid Violet 49 from water and textile industrial effluent: adsorption isotherms and kinetic models

“…The techniques, methods and procedures reported in the literature for remediation of synthetic dyes can be broadly classified into three major groups; these are biological, chemical and physical methods. Use of microorganisms [8][9][10][11][12][13], nano materials [14][15][16][17][18], blends and polymers [19][20][21] and degradation techniques such as sonochemical [22], electrochemical [23] and oxidative degradation [24] are reported in the literature. These methods have such problems as high quantity of cost, operational difficulties including creation of toxic intermediates, lower quantity of removal and increased specificity for some dyes and such others [25].…”