Polystyrene microplastics (PS-MPs) affect the immune defense function on carp (Cyprinus carpio). The PS-MPs model of was established by feeding with particle size 8 µm and concentration 1000 ng/L water. Hepatopancreas test revealed activities AKP, ALT, AST LDH abnormal increase. induced tissue damage lead to hepatopancreas function. also a oxidative stress antioxidant enzymes SOD, CAT, GSH-PX, T-AOC decreasing reactive oxygen species (ROS) excessive accumulation. activated Toll like...

Abstract Pesticides are a safety issue globally and cause serious concerns for the environment, wildlife human health. The handheld detection of four pesticide residues widely used in Basmati rice production using surface-enhanced Raman spectroscopy (SERS) is reported. Different SERS substrates were synthesised their plasmonic scattering properties evaluated. Using this approach, limits achieved within range 5 ppb-75 ppb, solvent. Various extraction techniques assessed to recover from spiked...

To elucidate the chemical compositions of aerial parts Chrysanthemum coronarium L., ethanol extracts Ch. L. were firstly isolated by MCI-gel resin column. The caffeoylquinic acid-rich fractions further purified various chromatographic columns including silica gel, Sephadex LH-20, and semi-preparative HPLC to yield compounds. compounds characterized ¹H-Nuclear Magnetic Resonance (¹H-NMR), 13C-NMR, high resolution electrospray ionisation mass spectral (HR-ESI-MS) spectroscopy. Seven acid (CQA)...

The use of mini-hydrocyclones for downhole oil–water separation has been proposed due to their small size, convenient arrangement, simple structure, and high efficiency, all which contribute an improved economic recovery rate in oil fields. Currently, are primarily used solid–liquid separation, the flow field characteristics mechanisms improving efficiency liquid–liquid not fully understood. This paper elucidates mechanism mini-cyclones from a perspective by combining numerical simulations...

Hydrocyclones have the advantages of fast separation speed, simple structure, small footprint, and convenient operation/maintenance, resulting in satisfactory performance wide applications. However, conventional hydrocyclones are incapable separating fine particles or droplets. A hydrocyclone with media-size redistribution (HMSR) was designed studied to alleviate this shortcoming. The overall efficiency could be improved by design. Based on theory analysis numerical simulation, mechanism...

Conventional hydrocyclones (CHCs) exhibit limited effectiveness in separating fine oil droplets from produced fluids, constraining overall oil-water separation efficiency. Mini (MHCs) with smaller main diameter can further enhance the efficiency of droplets. This study constructs a two-stage series system using two individual MHCs. Simulations were conducted to investigate effects split ratio, water content, and droplet size on performance. The adaptability these parameters was thereby...

Oil is one of the world's most crucial energy sources. In recent years, separation hydrocyclones coupled with multiphase or multifield has emerged as a leading trend in oilfield-produced fluid pre-separation technology. The study complex dynamics among particles multiphase-coupled systems. this paper, we explore novel approach: hydrocyclone to enhance oil–water separation, based on composite force field. computational dynamics-discrete element method utilized analyze dynamic behavior and oil...

The main diameter of hydrocyclone (HC) has significant effects on separation performance. However, the differences flow field characteristics within different HCs have not been understood well yet, which makes it impossible to grasp influence mechanism Through study migration trajectories particles, is found that greater and finer more particles escape from overflow outlet. relationships between longest residence time HC for with 10 15 μm were, respectively, clarified. high-speed video...

A series of laboratory tests including flow consistency, viscosity, one-dimensional compression, and permeability were conducted on the fiber-reinforced cemented waste slurries obtained from a construction site to evaluate fiber efficiency behaviors compressibility-permeability properties. Results indicated that did not increase with increasing length in this study because slurry was composed high montmorillonite illite contents study. Fiber had limited effect mixture reinforced by short...

In the non-ideal gas lattice Boltzmann equation (LBE), intermolecular forces between solid and fluid can be represented by inclusion of wall free energy in expression total energy. We derived investigated three types polynomial (linear, quadratic, cubic) based boundary conditions for LBE method. Static cases with a liquid drop sitting on surfaces are examined. All proposed able to predict equilibrium states very well range moderate contact angles incorporating potential form bounce-back rule...

The economic and efficient treatment of mixed media in offshore produced fluids is great significance to oilfield production. Due the small space limited load-bearing capacity platforms, some mature multiphase separation processes onshore oilfields are difficult apply. Therefore, high-efficiency processing methods with small-occupied required. Mini hydrocyclones (MHCs) a potential method due their simple structure, footprint, high efficiency (especially for fine particles or droplets)....

Effects of the particle diameter and injection position on gas–solid two-phase flow have important implications in tangential inlet cyclone separator. The Navier–Stokes equation coupled with Reynolds stress model Euler coordinate system is adopted to describe gas discrete phase Lagrange used calculate trajectories. Results show that separation efficiency varies at cross-section. It found increased increase diameter. However, when exceeds a critical size, particles will deposit wall conical...

Abstract Hydrocyclones exploit density gradients for the centrifugal separation of dispersions in a continuous liquid. Selection geometrics optimal is case specific, like media characteristics. The existing optimization method based on computational fluid dynamics (CFD) provides powerful analytical tool but requires long times. most common praxis CFD via single‐factor (SFOM). In this study, novel approach presented as an improved rapid that implements dynamic‐mesh and user‐defined function...

De-oiling hydrocyclones are extensively applied in oilfield wastewater purification for fluid separation, because of their efficient and rapid processing performance. However, it is difficult a hydrocyclone to separate tiny oil droplets owing the inadequate centrifugal force. A type coalescence (CHC) designed based on principle separation hydraulic droplet collision coalescence. The structure, theory, CHC introduced. Based Euler–Euler method, population balance model (PBM) continuous...