The aim of this research was to investigate the use of a natural adsorbent like nopal (Opuntia albicarpa L. Scheinvar) for removing cadmium from aqueous solutions with low concentrations of this metal. Two treatments were applied to the cladodes: a dehydration to get dehydrated nopal (DHN) and heating up to 90°C to obtain a thermally treated nopal (TN). After examining the effect of various pH values (2-7), the capacity of each biosorbent was examined in batch sorption tests at different dosages (0, 500, 1000, 1500, 2000, and 3000 mg L(-1)). The results indicated that adsorption of cadmium to biomass of DHN and TN was highly dependent on pH and biosorbent dosage. The best removal of cadmium (53.3%, corresponding to q e of 0.155 mg g(-1)) was obtained at pH 4.0 by using the TN sorbent. Infrared and Raman spectra confirmed that cadmium removal occurred via adsorption to -OH functional groups.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4689899 | PMC |
| http://dx.doi.org/10.1155/2015/832571 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Biosorption of heavy metals by microalgae: hazardous side effects for marine organisms.
Chemosphere
January 2025
ING PAN - Institute of Geological Sciences, Polish Academy of Sciences, Research Centre in Kraków, Senacka 1 Str., PL31002 Kraków, Poland.
Biosorption is nowadays recommended as an ecological and environmentally friendly alternative to remove metals from contaminated regions. Even in situ incubations of algae on the seabed are conducted to investigate potential future ways of reducing metal contamination. Our study investigated the negative effects on microorganisms when metal-enriched algae are released into the marine environment.
View Article and Find Full Text PDFGlycine betaine enhances heavy metal phytoremediation via rhizosphere modulation and nitrogen metabolism in king grass-Serratia marcescens strain S27 symbiosis.
J Hazard Mater
January 2025
School of Environmental Science and Engineering, Hainan University, Haikou 570228, China; Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, School of Environmental Science and Engineering, Hainan University, Haikou 570228, China. Electronic address:
Microbe-Assisted Phytoremediation (MAP) is an eco-friendly method for remediating soil contaminated with heavy metals such as cadmium (Cd) and chromium (Cr). This study demonstrates the potential of a king grass-Serratia marcescens strain S27 (KS) co-symbiotic system to enhance heavy metal remediation. The KS symbiosis increased the biomass of king grass by 48 % and enhanced the accumulation of Cd and Cr in the whole plant by 2.
View Article and Find Full Text PDFBiosorption performance toward Co(II) and Cd(II) by irradiated Fusarium solani biomass.
Environ Geochem Health
January 2025
Soil and Water Research Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt.
Fusarium solani biomass plays a significant role in water pollution remediation due to its ability to sequester heavy metals, particularly cobalt (Co(II)) and cadmium (Cd(II)), which pose severe environmental and health risks. This study aimed to identify fungi from sewage-contaminated sites and evaluate their efficiency in absorbing and reducing Co(II) and Cd(II) ions. The biosorption potential of irradiated Fusarium solani biomass for removing Co(II) and Cd(II) ions from aqueous solutions was investigated.
View Article and Find Full Text PDFSynthesis, crystal structure and thermal properties of poly[di-μ-bromido-(μ-2,5-di-methyl-pyrazine)cadmium(II)].
Acta Crystallogr E Crystallogr Commun
January 2025
Institut für Anorganische Chemie, Universität Kiel, Max-Eyth.-Str. 2, 24118 Kiel, Germany.
The title compound, [CdBr(CHN)] , was prepared by the reaction of cadmium bromide with 2,5-di-methyl-pyrazine in water. Its asymmetric unit consists of one Cd cation and one 2,5-di-methyl-pyrazine ligand that are located on a crystallographic mirror plane as well as one bromide anion that occupies a general position. The Cd cations are sixfold coordinated by four bromide anions and two 2,5-di-methyl-pyrazine ligands within slightly distorted -CdBrN octa-hedra.
View Article and Find Full Text PDFThe Mechanisms of Cadmium Toxicity in Living Organisms.
Toxics
November 2024
UPIZ Educational and Research Laboratory of Biology-MF-NBU, New Bulgarian University, 1618 Sofia, Bulgaria.
Cadmium (Cd) is a toxic metal primarily found as a by-product of zinc production. Cd was a proven carcinogen, and exposure to this metal has been linked to various adverse health effects, which were first reported in the mid-19th century and thoroughly investigated by the 20th century. The toxicokinetics and dynamics of Cd reveal its propensity for long biological retention and predominant storage in soft tissues.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!