Removal of tetracycline by biochar synergistic with ferrate: Influencing mechanism on precursor biomass components.

Biochar can serve as an activator for potassium ferrate, significantly enhancing the treatment efficiency to antibiotics. However, the mechanism by which biochar activated potassium ferrate remained unclear, necessitating further investigation. Cellulose biochar (CBC) and lignin biochar (LBC) derived by two model compounds which were the highest proportion of content in biomass were adopted to be study object, to investigate the removal efficiency of tetracycline (TC) by ferrate synergetic with CBC and LBC, respectively for the first time, and thoroughly analyzed the adsorption and degradation processes within the reaction system.

Role of Lipopolysaccharides in the Inflammation and Pyroptosis of Alveolar Epithelial Cells in Acute Lung Injury and Acute Respiratory Distress Syndrome.

Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) represent a spectrum of common critical respiratory conditions characterized by damage and death of alveolar epithelial cells (AECs). Pyroptosis is a form of programmed cell death with inflammatory characteristics, and activation of pyroptosis markers has been observed in AECs of patients with ALI/ARDS. Lipopolysaccharides (LPS) possess strong pro-inflammatory effects and are a crucial pathological factor leading to ALI in patients and animals.

Ophiopogonin D alleviates acute lung injury by regulating inflammation via the STAT3/A20/ASK1 axis.

Background: Acute lung injury (ALI) is characterized by acute pulmonary inflammatory infiltration. Alveolar epithelial cells (AECs) release numerous pro-inflammatory cytokines, which result in the pathological changes seen in ALI. Ophiopogonin D (OD), extracted from the roots of Ophiopogon japonicus (Thunb.

Modified zero-valent iron nanoparticles enhanced remediation of PCBs-contaminated soil.

The high toxicity and persistence of polychlorinated biphenyls (PCBs) in the environment require effective remediation of PCBs-contaminated soil. This study used polylactic acid (PLA) and polyethylene glycol 4000 (PEG-4000) to modify zero-valent iron nanoparticles (nZVI) and conducted characterization analysis. It was found that when the addition amount of PLA was 2 %, the dispersion of modified nZVI was better.