Optimization of cadmium ions biosorption by fish scale from aqueous solutions using factorial design analysis and Monte Carlo simulation studies

Abstract

This work investigated cadmium ions biosorption on Fish scales (FS) of Sardina pilchardus. Different relevant parameters such as initial pH in the range 2.14 -7.76, initial cadmium concentration from 35 to 150 mg L -1 , and biosorbent dose in the range 50 -300 mg L -1 , were examined. The effect of these parameters on the cadmium removal was analyzed and optimized using full factorial design methodology and the analysis of variance. The kinetics were modelized for pseudo-second order and pseudo-first order models. Results showed that the pseudo-second order kinetic gave the best fit for equilibrium data. The biosorption isotherms were investigated for Freundlich and Langmuir models. Langmuir isotherm model gave the best fit and led to a maximum biosorption capacity of Cd(II) on FS of 52.08 mg g -1 . The results indicated that FS of was effective in the removal of cadmium ions. Optimum Cd(II) removal of 88.2% was calculated for pH 3, 75 mg L -1 of Cd(II) and 250 mg L -1 of FS. Monte Carlo simulation was used as relatively greener pathway to study the biosorption behavior of Cd(II) ions onto FS. It showed that the interaction Cd(II)hydroxyapatite was more favored than Cd(II)collagen.

Fish scale of Sardina pilchardus as a biosorbent for the removal of Ponceau S dye from water: Experimental, designing and Monte Carlo investigations

“…Table 10 shows that interface of PS/100water/50H 3 O + /50Cl -/Collagen is more stable (Low value of ℇ Tot = -281.319 kcal mol -1 ) comparing to the PS/100water/50H 3 O + /50Cl -/HDA one (high value of ℇ Tot = -202.969 kcal mol -1 ). In addition, the negative values of E ads mean that the studied biosorption can be spontaneously shaped [31,61]. Moreover, we observed that the system of PS/100water/50H 3 O + /50Cl -/Collagen has a more negative value of ℇ ads (-94.255 kcal mol -1 ) comparing to the PS/100water/50H 3 O + /50Cl -/HDA interface (-14.631 kcal mol -1 );…”

“…The RDF is used as a technique to predict the nature of biosorption between PS and surface. The appearance of peaks from 1.00 Å to 3.50 Å is a sign of chemisorption interaction nature [31]. The stable biosorption configuration of the studied interfaces (PS/100water/50H 3 O + /50Cl -/Collagen or HDA) (Fig.…”

“…The other chemicals, sodium chloride (NaCl), sodium hydroxide (NaOH) and hydrochloride acid (HCl) were purchased from Scharlau Chemie. The collection and preparation of the biosorbent FS of Sardina pilchardus are described in a precedent paper [31].…”

Evidence for the Augmented Cd(II) Biosorption by Cd(II) resistant strain Candida tropicalis XTA1874 From Contaminated Aqueous Medium

“…Biosorbents are quite omnipresent in our environment and can be of microbial origin such as whole cell bacteria, fungi or algae and cell wall saccharide materials derived from them [11][12][13][14][15][16] . Other biological materials of phytological and zoological origin such as whole plant biomass, stem powder, grape pomace, rose wastes, peat [17][18][19][20][21][22] . Among all the biological adsorbents used in the remediation process, living microbial cells are quite effective in removing cadmium like toxicants from contaminated water bodies 7 .…”

Evidences for the augmented Cd(II) biosorption by Cd(II) resistant strain Candida tropicalis XTA1874 from contaminated aqueous medium

“…Biosorbents are quite omnipresent in our environment and can be of microbial origin such as whole cell bacteria, fungi or algae and cell wall saccharide materials derived from them 21 – 26 . Other biological materials of phytological and zoological origin such as whole plant biomass, stem powder, grape pomace, rose wastes, peat 27 – 32 . Among all the biological adsorbents used in the remediation process, living microbial cells are quite effective in removing cadmium like toxicants from contaminated water bodies 17 .…”