Characterization of Aqueous Pb(II) and Cd(II) Biosorption on Native and Chemically Modified<i>Alstonia macrophylla</i>Saw Dust

Sewwandi, B. G. N.; Vithanage, Meththika; Wijesekara, S. S. R. M. D. H. R.; Rajapaksha, Anushka Upamali; Jayarathna, D. G. L. M.; Mowjood, M. I. M.

doi:10.1080/10889868.2012.665963

Cited by 11 publications

(2 citation statements)

References 21 publications

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“…The sorption capacities of our biosorbents are generally higher than reported in the literature for various biosorbents, e.g . sawdust (Cd 2+ : 0.27 mmol/g), [ 3 ] sawdust of Pinus sylvestris (Cd 2+ : 0.17 mmol/g, Pb 2+ : 0.11 mmol/g), [ 4 ] pine bark (Pb 2+ : 0.38 mmol/g), [ 5 ] custard apple fruit shell (Cd 2+ : 0.63 mmol/g, Pb 2+ : 0.44 mmol/g), [ 6 ] hazelnut shell (Pb 2+ : 0.14 mmol/g), [ 7 ] mistletoe (Cd 2+ : 0.45 mmol/g, Pb 2+ : 0.33 mmol/g), [ 13 ] macrofungus ( Amanita rubescens ) (Cd 2+ : 0.24 mmol/g, Pb 2+ : 0.19 mmol/g), [ 27 ] Nordmann fir leaves (Cd 2+ : 0.07 mmol/g, Pb 2+ : 0.10 mmol/g), [ 14 ] lichen ( Cladonia furcata ) (Pb 2+ : 0.06 mmol/g), [ 18 ] lichen ( Parmelina tiliaceae ) (Pb 2+ : 0.37 mmol/g) [ 19 ] or red algae (Cd 2+ : 0.48 mmol/g, Pb 2+ : 0.51 mmol/g). [ 17 ] The higher sorption capacities were determined in the case of some microorganism biosorbents: Staphylococcus xylosus (Cd 2+ : 2.22 mmol/g), Pseudomonas sp .…”

Section: Resultsmentioning

confidence: 99%

“…Two of the most widespread harmful metals are lead and cadmium. Both these elements have a toxic effect on the human body even at low exposure, [ 1 – 3 ] therefore purification of waste water and sewage polluted by these metals still raise universal interest. Chemical precipitation, carbon adsorption, membrane separation, ion exchange and biosorption have been proposed so far.…”

Section: Introductionmentioning

confidence: 99%

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New, hybrid pectin-based biosorbents

Jakóbik‐Kolon

Milewski

Karoń

et al. 2016

Separation Science and Technology

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In this work hybrid pectin-based biosorbents with secondary polysaccharide additives (gellan, carob and xanthan gum, ratio to pectin 1:1, 1:1 and 1:3, respectively) were obtained at two temperatures. The presence of these additives in prepared beads was confirmed by Raman spectra. The SEM micrographs show better homogeneity of blends and grater differences between structures of beads with various additives obtained at higher temperature. The sorption capacity of our hybrid biosorbents as well as sole pectin sorbent is rather the same, and equals 0.85 and 0.70 mmol/g for lead and cadmium, respectively, in pH 4–6.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New, hybrid pectin-based biosorbents

Jakóbik‐Kolon

Milewski

Karoń

et al. 2016

Separation Science and Technology

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Paddy Field and Constructed Wetland: The Equivalencies

Mowjood

Jinadasa

Basnayake

2020

Agricultural Research for Sustainable Food Systems in Sri Lanka

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Acid-activated biochar increased sulfamethazine retention in soils

Vithanage

Rajapaksha

Zhang

et al. 2014

Environ Sci Pollut Res

122

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Sulfamethazine (SMZ) is an ionizable and highly mobile antibiotic which is frequently found in soil and water environments. We investigated the sorption of SMZ onto soils amended with biochars (BCs) at varying pH and contact time. Invasive plants were pyrolyzed at 700 °C and were further activated with 30 % sulfuric (SBBC) and oxalic (OBBC) acids. The sorption rate of SMZ onto SBBC and OBBC was pronouncedly pH dependent and was decreased significantly when the values of soil pH increased from 3 to 5. Modeled effective sorption coefficients (K D,eff) values indicated excellent sorption on SBBC-treated loamy sand and sandy loam soils for 229 and 183 L/kg, respectively. On the other hand, the low sorption values were determined for OBBC- and BBC700-treated loamy sand and sandy loam soils. Kinetic modeling demonstrated that the pseudo second order model was the best followed by intra-particle diffusion and the Elovich model, indicating that multiple processes govern SMZ sorption. These findings were also supported by sorption edge experiments based on BC characteristics. Chemisorption onto protonated and ligand containing functional groups of the BC surface, and diffusion in macro-, meso-, and micro-pores of the acid-activated BCs are the proposed mechanisms of SMZ retention in soils. Calculated and experimental q e (amount adsorbed per kg of the adsorbent at equilibrium) values were well fitted to the pseudo second order model, and the predicted maximum equilibrium concentration of SBBC for loamy sand soils was 182 mg/kg. Overall, SBBC represents a suitable soil amendment because of its high sorption rate of SMZ in soils.

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Characterization of Aqueous Pb(II) and Cd(II) Biosorption on Native and Chemically ModifiedAlstonia macrophyllaSaw Dust

Cited by 11 publications

References 21 publications

New, hybrid pectin-based biosorbents

New, hybrid pectin-based biosorbents

Paddy Field and Constructed Wetland: The Equivalencies

Acid-activated biochar increased sulfamethazine retention in soils

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