Evaluation of low-cost sorbents as potential materials for in situ remediation of water contaminated with heavy metals
Journal Title: Technologica Acta - Year 2017, Vol 10, Issue 2
Abstract
The aim of this paper was to examine the possibilities of using various low-cost sorbents as material for permeable reactive barrier for efficient removing of lead, cadmium, copper and zinc from contaminated water. Natural zeolite (NZ), iron-modified zeolite (IMZ), apatite, concentrated apatite, kaolin and raw bentonite were examined. The batch test evaluation was used to investigate capturing of heavy metals from contaminated water onto sorbents, as well as retention strength of saturated sorbent. The change of pH values during saturation and leaching of heavy metals was performed in a slightly acidic to neutral area, confirming buffering abilities and environmental acceptability of all investigated sorbents as a material in PRB for protection of groundwater as the most valuable natural resources. The highest saturation ability towards all examined heavy metals was detected with raw bentonite and IMZ. Leaching of heavy metals at pH=2.94-2.98 was confirmed in all saturated sorbents, while at pH=6.07-6.46 it was not detected, except of Pb and Cd in raw bentonite. From the obtaned results, the recommendation for selection of sorbent for treatment of water contaminated with lead, cadmium, cooper and zinc is given.
Authors and Affiliations
Nedeljka Vukojević Medvidović, Aleksandra Daković, Marin Ugrina, Marina Trgo, Ivona Nuić, Marija Marković
Keywords
Related Articles
- EP ID EP247808
- DOI -
- Views 118
- Downloads 0
Possible Applications of Industry 4.0 Based on Customer Relationship Management in Bakery
Production of bakery products went through a long and gradual transformation from individual, craft to modern industrial production. Today, the production of bakery products has been developed by mass high-automated indu...
Local and global sensitivity analysis of model parameters for composting process
In this paper, a local sensitivity analysis was performed using one at time technique (OAT) on the parameters of the mathematical model for the composting process. An integrated mathematical model for composting process...
Pomological characteristics of the most represented autochthonous apple cultivars from the area of Northeast Bosnia
Introduction:Autochthonous apple cultivars are present in the life of the population of almost every country. They have economic imporance, especially in the nourishment of the population, as well as very valuable geneti...
Determination of the biomethanic potential of corn grain
Although it is primarily grown as food, corn also represents a very good raw material for the production of biogas due to the favourable starch and fibre ratio that is the basis of its structure. In addition, an importan...
Methanol Extracts and Volatiles of Telekia speciosa (Schreb.) Baumg. from Bosnia and Herzegovina
The aim of the present study was to analyse the methanol extracts from the aerial and the underground parts of Telekia speciosa (Schreb.) Baumg by HPLC and determine their antioxidant capacity. In addition, volatiles fro...