Skip to main content
padlock icon - secure page this page is secure

Evaluation of Adsorption of Cadmium onto Ferrihydrite-Humic Acid Coprecipitation

Buy Article:

$106.64 + tax (Refund Policy)

Cadmium in contaminated water attract public attention for its toxicity, bioavailability and removal difficulty. Two-line Ferrihydrite (Fh) coprecipitated with humic acid (HA) is expected to provide an environment friendly and highly efficient adsorption process for aqueous cadmium removal. C–Fe coprecipitates were prepared and examined by X-ray Diffraction (XRD), Scanning electron microscope (SEM) and Fourier transform infrared spectra (FTIR), and the product was determined as 2L ferrihydrite with poor crystallinity. The influence of adsorbent dosage, relative ionic strength, pH, adsorption time and initial concentration on adsorption mechanism was investigated. The experimental results showed the removal rate of Cd(II) was up to ∼99.76% from aqueous solutions. The adsorption isotherms followed the Langmuir isotherm model better than the Freundlich isotherm model. The adsorption kinetic data could be described well by Lagergren second-order kinetic equation, which assumes chemical adsorption. The amount of Cd adsorbed is a function of pH, alkaline environment can reinforce adsorption due to dissociation of phenolic groups to inhibit H bond generation which can contribute to aggregation.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: ADSORPTION; CADMIUM; C–Fe COPRECIPITATES; FERRIHYDRITE

Document Type: Research Article

Publication date: September 1, 2019

More about this publication?
  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more