Optimization of aquaculture wastewater treatment systems: based on the isolation of the strain Acinetobacter sp. LF10.

A highly efficient denitrifying bacterial strain (Acinetobacter sp. LF10) was isolated in this study, strain LF10 efficiently removed ammonium (98.02 ± 0.

C4-HSL drives rapid biofilm formation in low-temperature aquaculture effluent: strengthening structural stability of biofilm and improving nitrogen removal efficiency.

During the centralized discharge of winter aquaculture wastewater, low temperature (≤15 °C) and low C/N ratio (≤5) result in delayed initiation of the biofilm process and decreased nitrogen removal efficiency.The quorum sensing (QS) communication system serves as the core mechanism regulating biofilm formation. This study examined how adding N-butyyl-L-homo-serine lactone (C4-HSL) affects the start-up and nitrogen removal in sequential batch biofilm reactors (SBBR) operated at 14 °C with a C/N ≤ 5.

Starch-calcium inclusion complexes: Optimizing transparency, anti-fogging, and fluorescence in thermoplastic starch.

With the increasing demand for anti-fogging transparent material and environmental concern, developing sustainable intrinsically hydrophilic and anti-fogging thermoplastic material is important. In this work, thermoplastic starch (TPS) films with good anti-fogging and optical properties were prepared via coordinative interactions with calcium chloride (CaCl), zinc chloride (ZnCl) and magnesium chloride (MgCl). Among them, TPS with the incorporation of CaCl exhibited excellent anti-fogging and high optical transparency.

Simultaneous adsorption of As(III) and Pb(II) by the iron-sulfur codoped biochar composite: Competitive and synergistic effects.

Simultaneous elimination of As(III) and Pb(II) from wastewater is still a great challenge. In this work, an iron-sulfur codoped biochar (Fe/S-BC) was successfully fabricated in a simplified way and was applied to the remediate the co-pollution of As(III) and Pb(II). The positive enthalpy indicated that the adsorption in As-Pb co-pollution was an endothermic reaction.

Removal of Cu and Pb from contaminated agricultural soil using mixed chelators of fulvic acid potassium and citric acid.

This study investigated the application of a specific soil washing method to remove Cu and Pb from contaminated agricultural soil. To develop an efficient leaching agent of heavy metal compounds for use in farmland soil, a mixed chelator (MC) was prepared using potassium fulvic acid (PFA, 3.2%) and citric acid (CIT, 0.