Synthesis and characterization of cyano complexes of oxotungsten(IV) with morpholinomethyl urea and related ligands

Pathania, M. S.; Sheikh, Haq Nawaz; Kalsotra, B. L.

doi:10.1134/s0036023606090075

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…The addition of acid may cause further activation in the un-adsorbed portion of the bio-adsorbents; thus, bio-adsorption has been found to be greater in the study of initially rejuvenated bio-adsorbents and has been found to decrease rapidly afterward. [74] Cycles of the adsorption/desorption of the bio-adsorbents are found to be reduced as the iteration of cycles is increased. However, rejuvenation is not recommended as eucalyptus leaves are inexpensive and are readily available in large quantities.…”

Section: Regeneration Studiesmentioning

confidence: 98%

Removal of methylene blue (aq) using untreated and acid‐treated eucalyptus leaves and GA‐ANN modelling

et al. 2019

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In the present batch study, eucalyptus leaves (EUL), H2SO4‐treated eucalyptus leaves (SEUL), and H3PO4‐treated eucalyptus leaves (PEUL) are used as bio‐adsorbents for the removal of methylene blue (MB). The bio‐adsorption is executed to inspect the results of the variation between different experimental variables such as pH (2–10), adsorbent dose (1–10 g/L), contact time (5–360 min), and temperature (298–318 K) on the bio‐adsorption of MB. The Langmuir isotherm (R2 = 0.99) fitted adequately to the bio‐adsorption data for the initial MB concentrations of 10–300 mg/L. It is also necessary to mention that the MB bio‐adsorption occurred in the order of a monolayer on the EUL, SEUL, and PEUL. The bio‐adsorption kinetics have been fitted by the pseudo‐second‐order model (R2 ≥ 0.99) for various MB concentrations. The maximum bio‐adsorption capacity was 194.34 mg/g and was achieved for the H3PO4‐treated eucalyptus leaves (PEUL). These results showed that EUL, SEUL, and PEUL may be utilized as a favourable low‐cost bio‐adsorbent to eliminate MB from aqueous solutions. With safe disposal methods in mind, this investigation has revealed the eco‐friendliness of the bio‐adsorbents. A prediction of the removal percentage of methylene blue using a genetic algorithm (GA) from the data collected from the experiment has also been tested. The results related to the prediction using the GA‐ANN are accurate.

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Section: Regeneration Studiesmentioning

confidence: 98%