Evaluation of Pb (II) biosorption utilizing sugarcane bagasse colonized by Basidiomycetes

Abstract

The contamination of water resources by metallic ions is a serious risk to public health and the environment. Therefore, a great emphasis has been given to alternative biosorption methods that are based on the retention of aqueous-solution pollutants; in the last decades, several agricultural residues have been explored as low-cost adsorbent. In this study, the ability of Pb (II) biosorption using sugarcane bagasse modified by different fungal species was evaluated. The presence of carbonyl, hydroxyl, and carboxyl groups in the biosorbent was observed by spectroscopy in the infrared region. By scanning electron microscopy, changes in the morphology of modified material surfaces were observed. The highest adsorption capacity occurred at pH 5.0, while the shorter adsorbate-adsorbent equilibrium was at 20 min, and the system followed the pseudo-second-order model. The maximum biosorption in isotherms was found at 58.34 mg g(-1) for modified residue by Pleurotus ostreatus U2-11, and the system followed the Langmuir isotherm. The biosorption process was energetically spontaneous with low desorption values. This modification showed great potential for filters to remove Pb (II) and provide the preservation of water resources and animal health.

Simultaneous Removal of Multiple Heavy Metal Ions from River Water Using Ultrafine Mesoporous Magnetite Nanoparticles

“…One reason may be the fact that at lower pH the proton (H + ) density in the medium is higher, and then, a competition between H + and metal ions can occur at the active sites of the Fe 3 O 4 nanoadsorbents rendering the active adsorption sites less available for metal ions. 31 As the adsorption mechanism is a surface process, the surface of the adsorbent is of great importance for the extent of adsorption and is a key quality parameter. Therefore, the other reason was ascribed to the surface charge of the Fe 3 O 4 nanoadsorbents since magnetite NPs exhibit amphoteric surface activity.…”

Modification of pomegranate waste with iron ions a green composite for removal of Pb from aqueous solution: equilibrium, thermodynamic and kinetic studies

“…2 shows a broadband about 3400 and 2900/cm which denote the presence of hydrogen-bonded OH groups on the surface of adsorbent, originally bonded to an organic polymeric structure. The IR spectra indicates a strong peaks about 1600/cm band is related to the vibration of –C=O group stretching from aldehydes, ketones, and carboxylic acids (Palin et al 2016 ). The peaks of 500–900/cm regions indicate the loading of Fe 2+ ions into functional groups of granola surface.…”

Sugarcane Bagasse As Potentially Low-Cost Biosorbent

“…chelating group that enhanced the metal complexation on fiber surface. Other compounds such as citric acid and phthalic anhydrides have also been used for SB modification, resulting then in an increase of adsorption capacity for these fibers [9,13,17,18]. Table 1 summarizes some studies where SB in nature or modified form is used to remove heavy metals from aqueous environment.…”