Substituting natural aggregates in the green roof substrate and drainage layers with lightweight artificial recycled coarse materials is an eco-friendly alternative for applying lower load to rooftops preserving resources. However, a lack of precise understanding thermal resistance, water passing ability, holding capacity materials, including has raised demand measuring their Rc-value, permeabi...

In the present study, lightweight expanded clay aggregate (LECA) coated with iron oxide was investigated as a low cost sorbent to remove  from wastewater. Iron oxide coated LECA (IOCL) as a new sorbent was tested for its efficiency as  sorbent using operational parameters such as contact time, the initial pH of the solutions, and sorbent dosage concentration in batch systems. The adsorption cha...

Natural, H2O2 and MgCl2 modified Light Weight Expanded Clay Aggregate (LECA) were used as fluoride adsorbents. Characterization of LECA and its modified forms was done by infra-red, X-ray diffraction, scanning electron microscope and X-ray fluorescence studies. The specific surface area of HML and MGML was 3.34 and 3.97 times greater than that of NL (11.72 m/g). Improved chemical composition of...

Lightweight Expanded Clay Aggregate (LECA), a clay-based lightweight aggregate expanding after burning at high temperatures, is among the promising material since it can be used as construction materials for buildings and roads, geotechnical fillings, hydroponic growing medium, humidity control, wall damper, heat insulation, water treatment, others. However, potential of clay from various place...

Concrete developed from light expanded clay aggregate (LECA) and glass fiber has good performance, durability, sustainability. Towards this, the experimental investigation was designed to study cubes, cylinders, simply supported beams. Four mixtures had LECA volume of 0%, 75%, 85%, 95% as coarse replacement content 2% (N, L75, L85, L95), other two 75% 1% 1.5% (L75-F1 L75-F1.5). Results compared...

The present work aimed to evaluate the capacity of constructed wetlands (CWs) to remove three emerging organic contaminants with different physicochemical properties: caffeine (CAF), oxybenzone (MBPh), and triclosan (TCS). The simulated CWs were set up with a matrix of light expanded clay aggregates (LECA) and planted with Spartina maritima, a salt marsh plant. Controlled experiments were carri...

The main goal of this research was to evaluate the capability chitosan (CS)-lightweight expanded clay aggregate (Leca) composite as a green adsorbent for efficient capture carbon dioxide (CO2). adsorption process modelled by response surface methodology (RSM). recognised BET, SEM, EDX, XRF, XRD, TGA, XPS and FTIR analysis. It evidenced CS-Leca properties attributing its ability were eminently i...

Groundwater samples contaminated with potentially toxic elements (PTE), including metals and nitrate ions, were collected at a depth of 8–10 m from the Siberian Chemical Plant multicomponent waste storage. The possibility developing permeable biogeochemical barrier zeolite lightweight expanded clay aggregate (LECA) was investigated. mass fraction properties several (Mn, Fe, Co, Ni, Cu, Zn, Cd, ...