Innovative Technological Approach for the Cyclic Nutrients Adsorption by Post-Digestion Sewage Sludge-Based Ash Co-Formed with Some Nanostructural Additives under a Circular Economy Framework.

This paper presents a new, innovative technological approach, in line with Circular Economy principles, to the effective management of sludge generated during municipal wastewater treatment processes and subsequently used for biogas production. This approach allows for optimal, functional, and controlled cascade-type biotechnological thermal conversion of carbon compounds present in sewage sludge, later in solid digestate residues (after biogas production), and finally in the ash structure (after incineration, purposefully dosed nanostructural additives make the production of a useful solid product possible, especially for cyclic adsorption and slow release of nutrients (N, P, K) in the soil). The idea is generally targeted at achieving an innovative conversion cycle under a Circular Economy framework.

Surface Modification of Biomedical MgCa and MgCaGd Alloys by Micro-Arc Oxidation.

The aim of this work was to characterize the structure and corrosion properties of the MgCa(Gd) alloys surface treated by the micro-arc oxidation (MAO) process. The MgCa and MgCaGd alloy samples were processed by MAO in an electrolyte composed of NaOH (10 g/dm), NaF (10 g/dm), NaHPO (5 g/dm), NaSiO·5HO (10 g/dm) and water. Two different voltages (120 V and 140 V) were used in the MAO process.

Sorption of CO and CH on Raw and Calcined Halloysite-Structural and Pore Characterization Study.

The article presents comparative characteristics of the pore structure and sorption properties of raw halloysite (R-HAL) and after calcination (C-HAL) at the temperature of 873 K. Structural parameters were determined by optical scanning and transmission electron microscopy methods as well as by mercury porosimetry (MIP, Hg) and low-pressure nitrogen adsorption (LPNA, N, 77 K). The surface area parameter (LPNA) of halloysite mesopores before calcination was 54-61 m/g.

Clinical evaluation of heme iron polypeptide: sustaining a response to rHuEPO in hemodialysis patients.

Background: Optimizing iron and recombinant human erythropoietin (rHuEPO) therapy is necessary to achieve target hemoglobin levels and minimize costs as the end-stage renal disease (ESRD) population expands. Oral iron products in patients with ESRD have been largely abandoned, and the safety of intravenous (IV) iron preparations has improved with the introduction of new-generation compounds that have little allergenicity. Recent work suggests oral heme iron may be an effective supplement for hemodialysis (HD) patients because it is absorbed by patients with high ferritin levels, has fewer side effects, and its absorption is stimulated by erythropoietin administration.

Dialyzer fiber bundle volume and kinetics of solute removal in continuous venovenous hemodialysis.

The relationship between dialyzer fiber bundle volume (FBV), dialyzer life span, and small-solute clearance has yet to be clearly defined in continuous venovenous hemodialysis (CVVHD). This study sought to define this relationship using novel ultrasound dilution technology. We studied 55 sessions in 31 intensive care unit patients on CVVHD therapy.