Hybrid Adsorbent for Removal of Cd(II), Cu(II), Pb(II) and Zn(II) from Waters Using Submersible Device
Journal Title: Chemical Science International Journal - Year 2017, Vol 20, Issue 3
Abstract
Mesoporous carbon and humic acid - native and oxidized with 5% or 15% hydrogen peroxide - were used to obtain hybrid adsorbents MC-HA, MC-HA5, and MC-HA15, respectively, for removing certain metal ions from water. Fine particles of the hybrid adsorbents were characterized by various methods. The concentration of the functional groups capable of binding metal cations in the hybrid adsorbent increased from 1.2 mmol/g in MC-HA to 1.8 mmol/g in MC-HA5 and MC-HA15. The adsorption capacity depends on pH, and at pH 6.0, it has the following order (mmol/g): Cu(II) (1.0) > Pb(II) (0.65) > Zn(II) (0.46) > Cd(II) (0.38). The adsorption process is fast and reaches the equilibrium at low concentration. The Langmuir isotherm fits the experimental adsorption data better than the Freundlich model. Prepared adsorbents were fixed on a highly porous matrix to obtain a material suitable for simple submersible devices. A high efficiency of multi-metal removal (96.1-100%) and recovery (83.5-100%) by MC-HA5 remained in at least five consecutive adsorption-desorption cycles of model wastewater treatment. The possibility of its use for the remediation of contaminated reservoirs is also shown in a full-scale experiment.
Authors and Affiliations
Boris S. Smolyakov, Alexey K. Sagidullin
Biodisinfection and Coagulant Properties of Mixed Garcinia kola and Carica papaya Seeds Extract for Water Treatment
Garcinia kola (Heckel) and Carica papaya (Linn.) seeds from ripe fruits were investigated for their disinfection and coagulation activity in water. The phytochemical analysis indicated the presence of alkaloid, saponins,...
Structural Modification of Cellulosic Fabric via Esterification Using Balanites aegyptiaca Seed Oil
Cellulose fabrics were esterified by using varying volume of Balanites aegyptiaca seed oil. X-ray diffraction analysis was carried on the esterified fabrics and unesterified fabric. The crystallographs of all esterified...
A Modified Poly (Trimethylene Terephthalate) Used for Fused Deposition Modeling: Synthesis and Application
This paper presents the synthesis and application of a modified poly (trimethylene terephthalate) for Fused deposition modeling process. Five samples(S1-S5) of poly(trimethylene terephthalate-co-isophthalate-co-seacate)...
Water Quality Assessment of River Bonsa in Tarkwa, a Mining-impacted Area of Ghana
The suitability of River Bonsa for drinking, without any chemical treatment was assessed using a developed and robust water quality index (WQI), with modification for the river under study. In evaluating WQI, nine parame...
Qualitative Phytochemical Screening of Bologi (Senecio biafrae) and Bitter Leaf (Vernonia amygdalina) Leaves
The Phytochemical screening of Senecio biafrae and Vernonia amygdalina showed the presence of saponins,tanins, phlobataninss, phenol,anthraquinones, flavonoids, glycoside, steroids, terpens, cardenolides, chalcones,quino...