Research Article
Evaluation of a Novel Water Treatment Residual Nanoparticles as a Sorbent for Arsenic Removal
Table 2
Equilibrium model constants and standard error of estimate and determination coefficients for arsenic adsorption by the three different particles sizes of WTR.
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(mg g−1) is P adsorbed per gram of adsorbent, (mg L−1) is equilibrium P concentration in solution, is a constant related to adsorption capacity of the adsorbent (L mg−1), is a constant, (mg g−1) is the maximum adsorption capacity of the adsorbent, (L mg−1) is Langmuir constant related to the free energy of adsorption, θ is fractional coverage, is the universal gas constant (kJ mol−1 K−1), is the temperature (K), is (−) the variation of adsorption energy (kJ mol−1), is Temkin constant (L mg−1), is Fowler-Guggenheim constant (L mg−1), is the interaction energy between adsorbed molecules (kJ mol−1), is Kiselev constant (L mg−1), is a constant of complex formation between adsorbed molecules, is Hill-de Boer constant (L mg−1), and (kJ mol−1) is a constant related to the interaction between adsorbed molecules. A positive means attraction between adsorbed species and a negative value means repulsion. |