Microorganisms that can transfer electrons outside their cells are useful in a range of wastewater treatment and remediation technologies. Conventional methods enriching exoelectrogens cost-prohibitive (e.g., controlled-potential electrodes) or lack specificity soluble electron acceptors). In this study low-cost simple approach to enrich from mixed microbial inoculum was investigated. After the...

The GacS/GacA two-component regulatory system activates the production of secondary metabolites including phenazines crucial for biological control activity in Pseudomonas chlororaphis 30-84. To better understand the role of the Gac system on phenazine regulation, transcriptomic analyses were conducted by comparing the wild-type strain to a gacA mutant. RNA-seq analysis identified 771 genes und...

Binary decision diagrams (BDDs) can compactly represent ad-hoc nary Boolean constraints. However, there is no generalized arc consistency (GAC) algorithm which exploit BDDs. For example, the global case constraint by SICStus Prolog for ad-hoc constraints is designed for nonBoolean domains. In this paper, we introduce a new GAC algorithm, bddc, for BDD constraints. Our empirical results demonstr...

Granular wood-derived biochar (BC) was compared to granular activated carbon (GAC) for the treatment and nutrient recovery of real wastewater in both batch and column studies. Batch adsorption studies showed that BC material had a greater adsorption capacity at the high initial concentrations of total chemical oxygen demand (COD-T) (1200 mg L(-1)), PO4 (18 mg L(-1)), and NH4 (50 mg L(-1)) compa...

Thermal treatment is routinely used to reactivate the spent granular activated carbon (GAC) from water purification facilities. It also an integral part of sewage sludge and municipal solid waste management. This study presents a detailed investigation fate per- polyfluoroalkyl substances (PFAS) one PFAS alternative (GenX) in thermal processes, focusing on effect GAC. We demonstrate that thermo...

Granular activated carbon (GAC) and powdered (PAC) are the two most common forms of with varying particle size range. The goal this study was to analyze key factors (particle activation temperature) affecting surface characteristics GAC PAC derived from palm kernel shell (PKS). morphology suggested that pore network in PKS-PAC is more developed than PKS-GAC owing presence a micropore structure ...

introduction: wastewaters of chemical, petrochemical, electrical, pharmaceutical and paper industries are the main sources of mercury and its compounds. mercury is one of the toxic elements, so its removal from water and industrial wastewaters seems to be important and essential. the objective of this study was to investigate effective factors such as ph, contact time, absorbent dose, mixing ra...

this study evaluates the effectiveness of adsorption process by granular activated carbon (gac) compared with a novel formulation of coagulation - flocculation process for dye removal from textile wastewater. in this regard, acidic, reactive, disperse and direct red dye are used to prepare the synthetic dye. dominant wave length for each dye is determined by spectrophotometeric method. using ga...

Ozonation (O3) is a widely used advanced oxidation process (AOP) for the treatment of wastewater, while its drawbacks include high energy consumption and poor solubility must be reduced or eliminated. Hence, combined catalytic ozonation with H2O2 S2O82- was employed to degrade mono ethylene glycol (MEG) eliminate ecological risks during gas refinery wastewater. In this study, reduction chemical...