Articles Related to Removal
Permeable Rective Barrier Using Bottom Ash and Clay for The Removal of Contaminants Presesent in Leachate
The Rapid generation rate of solid waste due to increasing population and industrialization leads to open dumping of solid waste. This causes serious environmental risk of groundwater contamination due to landfill leachate, that consists of heavy metals and impurities.
Temperature Variation on Sulphur Removal from Laterite Nickel Leaching Residue and Iron Extraction
Nickel production for electric vehicle batteries increases by 30% every year. As the country with the most nickel production in 2021, Indonesia will operate six nickel refining plants with High-pressured acid leaching technology and one development of Step Temperature Acid Leach technology. Problems arise with many hydrometallurgical-based nickel refining plants where the leach residue will continue to accumulate and potentially pollute the soil environment. Lateritic nickel leach residue has a high Fe content reaching 44.45% in the form of hematite and an S content of around 1.3%. Besides, demand growth in the iron and steel industry is greater than the availability of its raw materials. Thus, secondary sources for raw materials for the iron and steel industry are needed. The maximum S content for steel raw materials is 0.1%, so the sulfur content in leach residue must be removed. This research focuses on removing sulfur content in lateritic nickel leach residue by roasting at a temperature of 500 °C until 1100 °C. The experiment was continued with reduction roasting at various temperature profiles. The reduced phase of the roasted leach residue sample is then compared with the reduced phase of the initial leach residue sample. Sulfur content decreases with increasing roasting temperature. Sulfur content reaches ~0% at a roasting temperature of 1100 °C. The optimum initial sample reductive roasting temperature of lateritic nickel leach residue was 1400 °C with 95.9% Fe content and 0.1% S in metal. The optimum reductive roasting temperature for 1100 °C roasted samples was 1200 °C with 94.6% Fe content and 0% S. Roasting treatment can reduce the optimum temperature for the reduction roasting process.
Removal of Heavy Metals from Groundwater by Hydrous Ferric Oxide-Modified Peanut Shell
This study reports the adsorption capacity of copper Cu (II) and nickel Ni (II) of biochar obtained from peanut shell. The kinetics and equilibrium of biosorption were examined in detail. Two kinetic models (pseudo-first order and pseudo-second order) were used to correlate the experimental data and to determine the kinetic parameters. Two well-known adsorption isotherms were chosen to describe the biosorption equilibrium (Langmuir and Freundlich). The equilibrium isotherms showed that modified peanut shells possess high affinity, sorption capacity for Cu (II) and Ni (II) ions, sorption capacities of 37.443 mg/g Cu (II) and 28.626 mg/g Ni (II) biomass, respectively. All results showed that peanut shells biomass is an attractive, alternative low-cost bio sorbent for removal of heavy metal ions from aqueous media, therefore biomass materials find good application prospects.
The Efficiency of Functional Activated Carbon Non-woven Fabric Filters for Fine Dust Reduction
Particulate matter (PM) concentrations are significantly higher in urban railway tunnels (178.1 μg/m3) than in metropolitan areas (49 μg/m3). Nitrogen oxide (NOx) concentrations, which are a direct cause of lung disease, have been found to exceed the atmospheric standard of the Ministry of Environment in tunnels in Korea. Dust generated by trains is scattered at high speed along tunnels, making filtration difficult. The development of filters that can be used in tunnels is urgently required. In this study, the results of using an activated carbon filter (ACF) were analyzed and compared with the laboratory-scale PM adsorption using functional activated carbon non-woven fabric filters (Cerebasel, Cerecore) that can be manufactured in Korea. The fine PM concentration, filter depth, and flow rate in the tunnel were the experimental variables. We compared PM concentrations before and after the filter experiments, and calculated the PM removal efficiency to determine the optimal conditions.
Immunodepletion of Multiple High-Abundant Proteins from Bovine Fluids
Immunodepletion of high-abundant proteins (HAPs) aids in the identification and analysis of low-abundant proteins (LAPs) in complex
samples. Currently, immunodepletion methods for bovine samples are very limited whereas greater availability exists for human and
murine animal samples. In this study, we report the simultaneous depletion of HAPs from bovine samples using an immunoaffinity
depletion cartridge (the multiple affinity removal system, MARS) designed to target six human HAPs, while such a depletion kit for
bovine samples is not available.
Transient Bacteria Removal by Concentrated Sulfuric Acid for Cell Pollution
We found and recommended a method for rapid and effective sterilization by using concentrated sulfuric acid in cell culture.
Editorial Board Members Related to Removal
Antoine Trzcinski
Lecturer in Water and Environmental Engineering
Faculty of Engineering
University of Southern Queensland
Australia
Faculty of Engineering
University of Southern Queensland
Australia
AMIR A. BAJOGHLI
Clinical Associate Professor
Department of Dermatology
Virginia Commonwealth University Inova Medical Campus
United States
Department of Dermatology
Virginia Commonwealth University Inova Medical Campus
United States
RAFFAELE MAROTTA
Associate Professor of Industrial Chemistry
Department of Chemical Engineering, Materials and Industrial Production
University of Naples Federico II
Italy
Department of Chemical Engineering, Materials and Industrial Production
University of Naples Federico II
Italy
Syed W. Shah
Associate Professor
School of Health Sciences
Universiti Sains Malaysia
Malaysia
School of Health Sciences
Universiti Sains Malaysia
Malaysia
VICTORIA J VIEIRA-POTTER
Assistant Professor
Department of Nutrition and Exercise Physiology
University of Missouri
United States
Department of Nutrition and Exercise Physiology
University of Missouri
United States
Agnieszka Alicja Karczmarczyk
Assistant professor
Faculty of Civil and Environmental Engineering
Warsaw University of Life Sciences
Poland
Faculty of Civil and Environmental Engineering
Warsaw University of Life Sciences
Poland
Mehdi Vosoughi
Assistant Professor
Department of environmental health engineering
Ardabil University of Medical Sciences
Iran
Department of environmental health engineering
Ardabil University of Medical Sciences
Iran
Mohamed Khayet
Professor
Department of Applied Physics
Complutense University of Madrid
Spain
Department of Applied Physics
Complutense University of Madrid
Spain
Mohammad Reza Movahed
CareMore Regional Cardiology Director of Arizona
Clinical Professor of Medicine
University of Arizona
USA
Clinical Professor of Medicine
University of Arizona
USA
KAZI MOHSIN
Assistant Professor
Department of Pharmaceutics
King Saud University
Saudi Arabia
Department of Pharmaceutics
King Saud University
Saudi Arabia