Evaluation of Kinetic Models of Copper and Lead Uptake from Dye Wastewater by Activated Pride of Barbados Shell

Abstract

Pride of Barbados shell was effectively used as a raw materials for the production of activated carbon with HNO 3 as an activating agent using twostep process. Batch adsorption was used in interacting the dye wastewater with activated carbon within 30-150 minutes contact time. The maximum adsorption of Cu and Pb were 96.63% and 85.55% at 150 minutes and 30 minute contact time respectively. The result was found to match well with pseudo second-order compared to pseudo first-order, Natarajan and khalaf first order and Elovich model tested. Therefore, activated pride of barbados shell could be employed as an adsorbent in removing Cu and Pb from similar wastewater and aqueous solution.

Removal of Methylene Blue From Aqueous Solution Using Activated Rice Husk Biochar: Adsorption Isotherms, Kinetics and Error Analysis

“…The linear form of the Bangham's pore diffusion model is represented in equation 17 and Table 2 [16,46] 1 7…”

“…Recently, the development and use of various adsorption materials, techniques and technologies for the removal of contaminants from aqueous media have increased [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] . Many researchers [15][16][17][18][19][20][21][22][23][24][25][26][27] have used many agricultural based waste materials such as Retama Raetam plant, saw dust, wheat bran, Jatropha Curcas and Terminalia Catappa and unmodified saw dust as an alternative cheaper and affordable substitute for application as sorbent for adsorption of contaminants from aqueous media. Rice husks are waste materials from rice processing and are usually discarded indiscriminately or burnt sometimes leading to eutrophication and green house aerosols, carbon (IV) oxide, carbon(II)oxide, methane, nitrogen oxides and volatile organics which present serious health and climatic changes [27][28][29][30][31][32][33][34][35][36] Varieties of synthetic anionic and cationic dyes are routinely used by chemical industries such as leather, textile, printing, food, pulp and paper [27] .…”

Adsorption of Lead, Manganese, and Copper onto biochar in landfill leachate: implication of non-linear regression analysis

“…Where, qe(Exp) is the adsorption capacity at equilibrium condition obtained from adsorption experiments, qe(Cal) is the calculated value of adsorption capacity at equilibrium state, and N is the number of data points [36].…”

“…Where α is the initial adsorption rate (mg g -1 min -1 ) and β is defined as desorption constant (g mg -1 ) during any experiment [36]. Elovich differential equation can be solved assuming α βt >> 1 and by applying the boundary conditions of qt = 0 at t = and qt = qt at t = t [39].…”

Adsorption of Lead(II), Manganese(II), and Copper(II) onto biochar in landfill leachate: implication of non-linear regression analysis

“…Where, q e(Experimental) is the adsorption capacity at equilibrium condition obtained from adsorption experiments, q e(Calculated) is the calculated value of adsorption capacity at equilibrium state, and N is the number of data points [25].…”