Matches in SemOpenAlex for { <https://semopenalex.org/work/W998567404> ?p ?o ?g. }
Showing items 1 to 65 of
65
with 100 items per page.
- W998567404 abstract "In the pineapple canning industry, almost forty percent of pineapple portion is rejected during the production process. Most of the rejected portion is used as ruminant and for alcohol production. In the present study, the untreated solid pineapple waste (SPW) was used to adsorb selenite ion (Se(IV)) from aqueous solution. The Se(IV) loaded and unloaded SPW were characterized using proximate analysis, atomic absorption spectrometry, scanning electron microscopy, energydispersive X-ray spectroscopy, thermogravimetry analysis, differential scanning calorimetry and Fourier transform infrared spectroscopy. Various parameters that affect the adsorption such as initial pH, contact time, temperature, mass of adsorbent and concentration of adsorbate were investigated to determine the optimum adsorption conditions. Kinetics of the adsorption was investigated by pseudo firstorder and pseudo second-order models. Equilibrium studies were carried out by Langmuir, Freundlich and Temkin isotherms. Thermodynamic studies of the adsorption were performed using van’t Hoff equation. Desorption studies of the Se(IV) loaded SPW were carried out under various conditions such as initial pH, desorption time, ratio mass of loaded SPW to reaction volume and concentrations of humic acid and competing ions such as chloride, phosphate and sulphate ions. Under the optimum adsorption conditions the Se(IV) content of SPW could be increased by 100 folds from less than 10 µg/g to nearly 1000 µg/g. The adsorption optimum conditions were at pH 6, adsorption duration t = 60 min, initial concentration of Se(IV) aqueous solution C0 = 10 mg/L, SPW weight was 3 g in 50 mL of reaction volume and temperature was 80°C. The adsorption rate of Se(IV) by SPW under the optimum conditions fitted the pseudo second order with rate constant, k2 = 4.8539 mg/g min while the adsorption of Se(IV) by SPW best fitted Temkin isotherm (R2 = 0.9963), followed by Langmuir isotherm (R2 = 0.9830) and the Freundlich isotherm (R2 = 0.9702), which indicated the dominance of chemisorption. The van’t Hoff equation applied to this adsorption indicated that the adsorption process is endothermic, favourable and spontaneous. The adsorbed Se(IV) can be leached out gradually under the influences of pH, ratio of mass of loaded SPW to reaction volume and the presence of humic acid, phosphate, sulphate and chloride ions" @default.
- W998567404 created "2016-06-24" @default.
- W998567404 creator A5053126797 @default.
- W998567404 date "2013-01-01" @default.
- W998567404 modified "2023-09-27" @default.
- W998567404 title "Adsorption of selenite ion from aqueous solution by solid pineapple waste" @default.
- W998567404 hasPublicationYear "2013" @default.
- W998567404 type Work @default.
- W998567404 sameAs 998567404 @default.
- W998567404 citedByCount "0" @default.
- W998567404 crossrefType "dissertation" @default.
- W998567404 hasAuthorship W998567404A5053126797 @default.
- W998567404 hasConcept C112825004 @default.
- W998567404 hasConcept C113196181 @default.
- W998567404 hasConcept C115958267 @default.
- W998567404 hasConcept C121332964 @default.
- W998567404 hasConcept C13965031 @default.
- W998567404 hasConcept C150394285 @default.
- W998567404 hasConcept C162711632 @default.
- W998567404 hasConcept C178790620 @default.
- W998567404 hasConcept C179104552 @default.
- W998567404 hasConcept C184651966 @default.
- W998567404 hasConcept C185592680 @default.
- W998567404 hasConcept C39519442 @default.
- W998567404 hasConcept C43617362 @default.
- W998567404 hasConcept C97355855 @default.
- W998567404 hasConceptScore W998567404C112825004 @default.
- W998567404 hasConceptScore W998567404C113196181 @default.
- W998567404 hasConceptScore W998567404C115958267 @default.
- W998567404 hasConceptScore W998567404C121332964 @default.
- W998567404 hasConceptScore W998567404C13965031 @default.
- W998567404 hasConceptScore W998567404C150394285 @default.
- W998567404 hasConceptScore W998567404C162711632 @default.
- W998567404 hasConceptScore W998567404C178790620 @default.
- W998567404 hasConceptScore W998567404C179104552 @default.
- W998567404 hasConceptScore W998567404C184651966 @default.
- W998567404 hasConceptScore W998567404C185592680 @default.
- W998567404 hasConceptScore W998567404C39519442 @default.
- W998567404 hasConceptScore W998567404C43617362 @default.
- W998567404 hasConceptScore W998567404C97355855 @default.
- W998567404 hasLocation W9985674041 @default.
- W998567404 hasOpenAccess W998567404 @default.
- W998567404 hasPrimaryLocation W9985674041 @default.
- W998567404 hasRelatedWork W139945017 @default.
- W998567404 hasRelatedWork W2013210430 @default.
- W998567404 hasRelatedWork W2022459399 @default.
- W998567404 hasRelatedWork W2023718605 @default.
- W998567404 hasRelatedWork W2062425638 @default.
- W998567404 hasRelatedWork W2082313010 @default.
- W998567404 hasRelatedWork W2313101612 @default.
- W998567404 hasRelatedWork W2328291025 @default.
- W998567404 hasRelatedWork W2503047644 @default.
- W998567404 hasRelatedWork W2542791883 @default.
- W998567404 hasRelatedWork W2588933531 @default.
- W998567404 hasRelatedWork W3032308215 @default.
- W998567404 hasRelatedWork W3109216232 @default.
- W998567404 hasRelatedWork W3171509885 @default.
- W998567404 hasRelatedWork W3207386417 @default.
- W998567404 hasRelatedWork W50746169 @default.
- W998567404 hasRelatedWork W2407727255 @default.
- W998567404 hasRelatedWork W2870722130 @default.
- W998567404 isParatext "false" @default.
- W998567404 isRetracted "false" @default.
- W998567404 magId "998567404" @default.
- W998567404 workType "dissertation" @default.