Among the chemical pretreatments available for pretreating biomass, the inorganic salt is considered to be a relatively new but simple reagent that offers comparable pentose (C5) sugar recoveries as the conventional dilute acid hydrolysis. This study investigated the effects of different concentrations (1.5-6.0% (v/v)) of H2O2 or Na2S2O8 in facilitating CuSO4·5H2O pretreatment for improving pen...

Cells of Ralstonia solanacearum were exposed to Cu in distilled water, and the resulting Cu-stressed non-culturable cells were inoculated to natural (non-pasteurized) and pasteurized soils in order to examine their culturability and recovery. Exposing the cells to 20 μM CuSO4 produced transitory non-culturable cells, which exhibited a remarkable recovery in culturability after incubation in the...

Performance and Cu status were measured in growing and finishing steers supplemented with different copper (Cu) concentrations and sources. Sixty Angus (n = 36) and Angus x Hereford (n = 24) steers were stratified by weight and initial liver Cu concentration within a breed and randomly assigned to treatments. Treatments consisted of 1) control (no supplemental Cu); 2) 20 mg Cu/kg DM from Cu sul...

This experiment was carried out to explore the efficiency of an individual or combined doses vitamin C (Vit. C) and E E) in alleviating biochemical, genotoxicity, pathological changes liver induced by copper sulfate (CuSO4) toxicity broiler chickens. Two hundred fifty-one-day-old chicks were haphazardly allotted into five groups (five replicates/group, ten chicks/replicate). The birds fed exper...

Artykuł przedstawia oryginalne badania związane z odzyskiwaniem miedzi ze ścieków przemysłowych. Celem badań eksperymentalnych jest odzyskiwanie sproszkowanej metalicznej o niskiej zawartości jonów metodą cementacji za pomocą złomowej elektrody żelaznej oraz do obliczenie wydajności miedzi, na którą wpływają następujące parametry: początkowe stężenia wartości pH i czas kontaktu. Eksperymenty ob...

For the treatment of 2-naphthol wastewater, homogeneous electro-Fenton process was considered as an effective method but some disadvantages greatly restrict its application. The three-dimensional (3D-EF) system using a nano zero-valent iron-supported biochar (NZVIs-BC) particle electrode and Cu-supported stainless steel (Cu-SSE) proposed to avoid electro-Fenton. In this work, 3D-EF developed, w...

in an attempt to determine the chemical losses of three common molluscicides, i.e. cuso4, napcp and bayer –73, in stagnant water, a solution of each of this molluscicide was applied to one or more b.truncatus habitats and outdoor aquariums. the concentration of each molluscicide in these water bodies was determined immediately after application and at fixed time intervals thereafter. the concen...

GOAL, SCOPE AND BACKGROUND Elevated concentrations of copper in the environment result in accumulation of the metal in plants and cause an increase in reactive oxidative species (ROS). The first response to elevated amounts of ROS is increased levels of enzymatic and non-enzymatic antioxidants that reduce oxidative stress. The aim of our study was to evaluate the early stages of antioxidative r...