Emulsifier Concentration Research Articles

Void Fraction of Two-Phase Flow of Air – Emulsion of Water and Oil in Horizontal Mini Pipe

Two-phase flow is the most straightforward flow of multi-phase flow. The void fraction is one of the significant parameters affecting the two-phase flow pattern on both small and mini channels. The flow pattern will be significantly sure, and fluctuations in pressure will change. If the pressure fluctuations are very high, it will affect the piping network system or channel and cause damage. Somebody can find the application of this case of damage to mini heat exchangers, mini boilers, and other small and mini equipment. This paper presents a significant correlation between void fractions and flow patterns. This study used a glass pipe with a length of 160 mm and a diameter of 1.6 mm with a horizontal position. The working fluids used are an emulsion of water and coconut oil with a concentration of 350 mg/dl and 500 mg/dl. The superficial velocity is gas (JG) = 0.08 m/s to 74.6 m/s, and the superficial velocity of the Liquid (JL)= 0.04 m/s to 4.15 m/s. Data measurements use a high-speed camera and are processed using MATLAB R2014a software. The research results showed that the difference in the concentration of the emulsion of water and coconut oil sufficiently affected the value of the void fraction significantly. The void fraction is because the increased concentration of such emulsions affects the increase in the viscosity value of the Liquid. The increase in the viscosity of the Liquid affects the speed of the Liquid tends to decrease. Under these conditions, the increasing superficial velocity of the gas affects the value of the growing void fraction.

Potency of emulsifiable concentrate and nanoemulsion formulations as green insecticides against two insects, Aphis craccivora and Liriomyza trifolii

The current research aims to develop emulsifiable concentrates (EC) and nanoemulsions derived from the plant essential oils of Salvia officinalis (L.) and Melissa officinalis (L.) at a concentration of 5%. The toxicity of the prepared formulations was evaluated against two insect species, the cowpea aphid, Aphis craccivora (Koch), and the broad bean leafminer, Liriomyza trifolii (Burgess). EC preparations were formed by mixing the essential oils with Tween 80, vegetable, and mineral oils. The nanoemulsions were manufactured by mixing different ratios of the essential oils and the surfactant (Tween 80) into an aqueous solution, followed by an ultrasonic emulsification process. The results showed that both EC and nanoemulsions with a ratio of essential oil to Tween 80 of 1:2 after 10 min of sonication passed the physical characteristics. The particle droplet size, zeta potential, and transmission electron microscopy (TEM) were measured for the successful nanoemulsion formulations. The ultrasonication and stirring procedures lowered the amounts of essential oils during preparations of S. officinalis and M. officinalis nanoemulsions to 17% and 20%, respectively. The laboratory trials elucidated that EC formulations were more potent than nanoemulsions for two insect species after a short period of time. While the field experiments showed that nano-formulations were more efficient than EC formulations with time elapsing. The results suggested that the prepared nanoemulsions can be used as eco-friendly alternatives to synthetic insecticides for controlling A. craccivora and L. trifolii infestations.

Increasing the Efficiency of Emulsion Crystallization in Stirred Vessels by Targeted Application of Shear and Surfactant

Emulsions containing crystalline dispersed phases hold significant importance in pharmaceutical, chemical, and life science industries. The industrial agitation and storage of these emulsions can prompt crystallization effects within the flow field, intersecting with the primary nucleation mechanisms. Notably, contact-mediated nucleation, in which subcooled droplets crystallize upon contact with a crystalline particle, and shear-induced crystallization due to droplet deformation, are both conceivable phenomena. This study delves into the crystallization processes of emulsions in a 1 L stirred vessel, integrating an ultrasonic probe to monitor droplet crystallization progression. By scrutinizing the influence of the flow field and of the emulsifiers stabilizing the droplets, our investigation unveils the direct impact of enhanced rotational speed on accelerating the crystallization rate, correlating with increased energy input. Furthermore, the concentration of emulsifiers is observed to positively affect the crystallization process. Significantly, this pioneering investigation marks the first evaluation of emulsion crystallization considering the overlapping nucleation mechanisms seen in industrial production of melt emulsions. The findings offer valuable insights for more systematic control strategies in emulsion crystallization processes, promising more efficient and sustainable industrial practices by enabling targeted application of shear and surfactants.

Properties of Macadam Stabilized with Cement and Asphalt Emulsion

The cracking of cement-stabilized macadam (CSM) reflects to the asphalt layer, which is one of the reasons for the failure of pavement performance and structure. Adding asphalt emulsion to CSM can effectively prevent the formation of cracks. The primary purpose of this article is to reveal the effect of asphalt emulsions on the performance of CSM by adding different contents of asphalt emulsion. For this purpose, tests of unconfined compressive strength (UCS), flexural tensile strength (FTS), elastic modulus, and frost resistance were performed on CSM with gradations of CSM-5 and CSM-10 (the maximum particle sizes of the macadam in the gradation composition are 5 mm and 10 mm), respectively. The test results showed that the UCS of CSM decreased with the increment of asphalt emulsion content. The FTS and elastic modulus of CSM increased with the content of asphalt emulsion. Based on the FTS test results, the frost resistance coefficient Km1, defined according to the CSM splitting strength prior to and subsequent to freeze–thaw, was used to evaluate the frost resistance. The test results showed that the frost resistance of CSM improved with the increase in asphalt emulsion content for the same cement content. In conclusion, adding asphalt emulsion to CSM has positive effects on the FTS, elastic modulus, and frost resistance. Therefore, for the purpose of maintaining the UCS value of CSM, the content of cement should be considered at the same time as the controlling of the content of asphalt emulsion.

Use of Pistachio Meal and Mono- and Diglyceride in the Production of Low-Fat Pistachio Butter

Background: Pistachio butter is produced from ground roasted pistachio nuts. Methods: In this study, different formulas of low-fat pistachio butter with 0, 5 and, 10% of pistachio meal and 0, 1 and, 2% of mono- and diglyceride were examined in terms of physicochemical, sensory, and nutritional characteristics. Results: In the fourth month of storage, the highest oil separation (12.4%) from the product was observed in pistachio butter without emulsifier and meal (P≤ 0.05). The most value of carbohydrates and the least value of oil content were observed in the pistachio butter containing 10% meal. The lowest anisidine and peroxide value was detected in the formula with higher content of emulsifier (2%). The pistachio butter formulas without or with 5% meal showed a better green color (lower 'a' value). The pistachio butter with higher values of the meal obtained the least spreadability score. Conclusion: The formula containing 1% mono- and diglyceride and 5% pistachio meal was selected as the best low-fat pistachio butter

Application of turbiscan lab to study the effect of emulsifier content on the stability of plant origin dispersion

Application of turbiscan lab to study the effect of emulsifier content on the stability of plant origin dispersion

Feed emulsifier improves the performance and nutrient digestibility in broiler chicken fed diets without antibiotic growth promoter

ABSTRACT 1. A study was conducted to assess the impact of supplementing-graded concentrations of emulsifier on the production performance, gut microbial count, and digestibility of nitrogen and energy in broiler chicken fed diets without AGP. 2. Male broiler chicks (n = 1500; Vencobb-430), aged one-day-old, were randomly allocated into six dietary groups each with 10 replicates of 25 birds each. A maize-soybean and meat and bone meal-based basal diet without antibiotic (AGP) growth promoter served as negative control (NC). The basal diet was supplemented with BMD (AGP, bacitracin methylene disalicylate-BMD 100 g/T), which served as the positive control (PC). Emulsifier was added to the NC diets at either 250 g/ton in all phases (250-All), 250 g in starter and grower phases, and 500 g in the finisher phase (250:250:500), 250 g in starter and 500 g in both grower and finisher phases (250:500:500) and 500 g in all phases (500 g-All). 3. Two broilers per replicate were slaughtered to record carcase traits and gut microbial count on day 43. There was significant improvement in body weight gain (BWG) and reduced FCR in broilers fed 250:250:500 and 250:500:500 g emulsifiers compared to other treatment groups. Carcase traits and faecal microbial count did not differ among treatments. The inclusion of BMD significantly improved nitrogen (N) digestibility compared to the NC group. The digestibility of emulsifier-supplemented groups was similar to those fed by the BMD group except for the 500-All group, which was an intermediary between NC and other emulsifier-fed groups. 4. It was concluded that supplementation with emulsifier (250:250:500 or 250:500:500) without antibiotic growth promoter significantly improved FCR and body weight gain similar to broilers receiving antibiotic growth promoter, which was associated with increased ileal digestibility of N and energy.

Characteristics of insoluble soybean fiber (ISF) concentrated emulsions: Effects of pretreatment on ISF and freeze-thaw stability of emulsions.

The properties of emulsions could be affected by the interactions between the components and network stabilization effect, which are commonly adjusted by changes in pH, ionic strength and temperature. In this work, insoluble soybean fiber (ISF) obtained via homogenization after alkaline treatment was pretreated firstly and then resultant emulsions were freeze-thawed. Heating pretreatment reduced droplet size, enhanced viscosity and viscoelasticity as well as subsequent stability of ISF concentrated emulsions, while both acidic pretreatment and salinized pretreatment decreased the viscosity and weakened the stability. Furthermore, ISF emulsions exhibited a good freeze-thaw performance which was further improved by secondary emulsification. Heating promoted the swelling of ISF and strengthened the gel-like structure of emulsions while salinization and acidization weakened the electrostatic interactions and caused the destabilization. These results indicated that pretreatment of ISF significantly influenced the concentrated emulsion properties, providing guidance for the fabrication of concentrated emulsions and related food with designed characteristics.

Isoniazid Loaded PCL-PEG Copolymer Nanoparticles for Sustained Release Application.

Tuberculosis (TB) is still a major cause of death worldwide, despite possibly curable therapies. Neurotoxicity, optic neuritis, and severe liver damage are side effects of isoniazid, a powerful first-line anti-TB drug. We investigated the use of PCL-PEG copolymer to sustain the release of isoniazid to reduce its adverse effects. In the present work, PCL-PEG copolymer was synthesized and characterized. Isoniazid-loaded nanoparticles (Inp) were prepared using a PCL-PEG copolymer. Furthermore, a 23 half factorial design was employed for the optimization of drug and emulsifier concentration in Inp. Full characterization of the nanoparticles was performed in terms of drug loading, entrapment efficiency, particle size, zeta potential, and in vitro drug release. The morphology, FTIR, DSC, and PXRD evaluation of the optimized Batch Inp F13 were studied. Stability was evaluated by storing the freeze-dried Inp F13 at various temperatures. The entrapment efficiency and drug loading of nanoparticles prepared by double emulsion solvent evaporation were found to be the highest. The release study revealed that all batches of nanoparticles exhibited sustained drug release (60.26 - 88.59%) for 5 days. The cytotoxicity study conducted on Mycobacterium tuberculosis revealed a gradual release of isoniazid from Inp, reaching the maximum (on the 15th day) compared to plain isoniazid (on the 4th day). At 0.8 μg/mL concentration, the inhibitory activity of Inp F13 was maintained for 15 days, indicating sustained release of isoniazid. The nanoparticles having PCL:PEG in a 95:5 ratio, with 0.5% PVA and initial drug loading of 3 mg, produced the optimum batch. Isoniazid-loaded PCL-PEG nanoparticles allowed controlled (sustained) release of isoniazid.

Interaction between Chinese quince fruit proanthocyanidins and soy protein isolate: Effects on physical and oxidative stability of oil-in-water emulsions

Protein-based emulsions are extremely sensitive to droplet aggregation. The interaction between the proanthocyanidins (PAs) and protein can affect the efficacy of protein on the stability of emulsions. In this study, PAs with different molecular weights of ethyl acetate (EA) and retained aqueous (RA) phase were prepared from Chinese quince fruit and mixed with soy protein isolate (SPI) to form complexes, and their effects on the physical and oxidative stability of oil-in-water (O/W) emulsions were assessed. The results confirmed that SPI had fewer α-helices and more random coils when bound to EA and RA. The main forces between PAs and SPI were hydrogen bonds and hydrophobic interactions. Furthermore, RA-SPI, particularly EA-SPI, showed better foaming, emulsifying and antioxidant properties than SPI. The emulsifying activity index values of EA-SPI and RA-SPI were 39.7% and 33.4% higher than that of SPI, respectively. The physical and oxidative stability of O/W emulsions stabilized by SPI were lower than those stabilized by EA-SPI and RA-SPI. At day 15, the lipid hydroperoxide content of EA-SPI and RA-SPI emulsions was 30.5% and 10.3% lower than that of SPI emulsion, respectively. This study provides a basis for PAs as natural antioxidants to improve the stability of O/W emulsions.

Soft glassy flow of highly concentrated monodisperse emulsions in microchannels: Layered structure and stairwise velocity profile

Concentrated emulsions with a jammed structure exhibit intricate flow properties, which are not fully comprehended. The flow behavior of a highly concentrated monodisperse emulsion in a microchannel is investigated using dissipative particle dynamics simulations. The local flow curves are analyzed at different sampling resolutions and tracer sizes. The characteristics of the velocity profile obtained at low resolutions agree with experimental observations. However, at high resolutions, the velocity profile deviates from the Herschel-Bulkley model, and stairwise changes appear in the shear zone. Droplet distributions indicate that the layered structure forms within the shear zone and expands with increasing pressure drop. Due to the infrequent exchange of droplets between neighboring layers, a sudden change in velocity arises between them. Additionally, at high pressure drops, the previously uniform droplet distribution in the plug zone transforms into a layered structure as well. Our findings suggest that highly concentrated emulsions under confinement exhibit non-homogeneous structures which affect their flow behavior significantly.

Self-assembly of eugenol-loaded particles to regulate the adhesion of carriers on leaves for efficient foliar applications and ecotoxicological safety

Currently, there is a pressing need to develop an agrochemical-loaded system that is both uncomplicated and efficient, thereby enhancing the adhesion of agrochemical to leaf surfaces and optimizing their insecticidal efficacy, while concurrently mitigating environmental risks. The flexible eugenol-loaded particles were synthesized via a one-step polyurethane self-assembly reaction, utilizing polyethylene glycol (PEG) as the soft segment and 4,4-diphenylmethane diisocyanate (MDI) as the hard segment. The increase in the length of the soft segment enhances the flexibility of the particles, thereby improving the contact area and adhesion with the foliar surface. When flexible particles are applied on the foliar surface, they can achieve satisfactory resistance to rainfall erosion. When the PEG molecular weight is 800, the residual concentration of eugenol can still reach 42.11% after 6 washes. The carrier protects the active ingredients and improves the resistance to ultraviolet irradiation. After 5 h of ultraviolet irradiation, the concentration of eugenol remained at 59.03% when PEG with a molecular weight of 200 was employed. Greenhouse experiments showed that the flexible transformation of particles greatly enhanced the application effect of spray on the foliar surface of particles. After undergoing three washes, the mortality of the particles can be enhanced by 5.4–8.4 times compared to that of emulsion concentrate (EC) sample. The enhancement of leaf retention performance reduces environmental risks caused by pesticide loss. Meanwhile, the controlled release of particles also reduces the acute toxicity to zebrafish. The toxicity selection pressure of the EUG@P800-Ps sample is 10.6 times that of the EC sample. In conclusion, the preparation process of the system is simple, and the flexible transformation is an effective strategy to improve the foliar application effect of spray and improve the environmental safety.

Optimization of retinin expression and the application with wax emulsion in nanocoatings

Anti-reflective nanocoatings that mimic the eyes of fruit flies are biodegradable materials with great market potential for a variety of optical devices that require anti-reflective properties. Microbial expression of retinin provides a new idea for the preparation of nanocoatings under mild conditions compared to physicochemical methods. However, the current expression level of retinin, the key to anti-reflective coating, is low and difficult to meet mass production. In this study, we analyzed and screened the best expression hosts for Drosophila-derived retinin protein, and optimized its expression. Chinese hamster ovary (CHO) cells were identified as the efficient expression host of retinin, and purified retinin protein was obtained. At the same time, the preparation method of lanolin nanoemulsion was explored, and the best anti-reflective ability of the nano-coating was determined when the ratio of specific concentration of retinin protein and wax emulsion was 16:4, the pH of the nano-coating formation system was 7.0, and the temperature was 30 ℃. The enhanced antireflective ability and reduced production cost of artificial antireflective nanocoatings by determining the composition of nanocoatings and optimizing the concentration, pH and temperature of system components may facilitate future application of artificial green degradable antireflective coatings.

Effect of sodium starch octenyl succinate-based Pickering emulsion on the physicochemical properties of hairtail myofibrillar protein gel subjected to multiple freeze-thaw cycles

A Pickering emulsion based on sodium starch octenyl succinate (SSOS) was prepared and its effects on the physicochemical properties of hairtail myofibrillar protein gels (MPGs) subjected to multiple freeze-thaw (F-T) cycles were investigated. The whiteness, water-holding capacity, storage modulus (G′) and texture properties of the MPGs were significantly improved by adding 1 %–2 % Pickering emulsion (P < 0.05). Meanwhile, Raman spectral analysis demonstrated that Pickering emulsion promoted the transformation of secondary structure, enhanced hydrogen bonds and hydrophobic interactions, and promoted the transition of disulfide bond conformation from g-g-g to g-g-t and t-g-t. At an emulsion concentration of 2 %, the α-helix content decreased by 10.37 %, while the β-sheet content increased by 7.94 %, compared to the control. After F-T cycles, the structure of the MPGs was destroyed, with an increase in hardness and a decrease in whiteness and water-holding capacity, however, the quality degradation of MPGs was reduced with 1 %–2 % Pickering emulsion. These findings demonstrated that SSOS-Pickering emulsions, as potential fat substitutes, can enhance the gel properties and the F-T stability of MPGs.

Study on the optimal biomass oil content of biomass oil emulsified asphalt based on permeation performance

As a prime coat material, emulsified asphalt has an effective consolidation effect on the semi-rigid base layer, biomass oil can effectively increase the penetration depth, but its content will also lead to the loss of bonding effect when it is too large, so the optimal biomass oil content needs to be further determined. In this paper, based on the theory of drying film formation of emulsified asphalt, molecular dynamics simulation and experimental methods such as viscosity test, contact angle test and maximum particle accumulation rate test were used to investigate the wetting performance indexes of emulsified asphalt particles with different biomass oil contents in the particle filling stage. Further the formation time of the maximum stacking rate of particles and the stabilization time of the relative concentration of emulsifiers in the drying film stage were also studied. The biomass oil emulsified asphalt has the best penetration performance when the ratio of biomass oil/asphalt is 1:3. In this dosage, emulsified asphalt can not only ensure that in the pre-construction can penetrate into the aggregate in a certain depth of penetration, to ensure that the construction effect of the early stage, and also in the later stage can reach a deeper depth of penetration, and thus better consolidation and strengthening of cement stabilized gravel base.

Enhanced micro-explosion to improve the yield of light oil in catalytic cracking of water-in-heavy oil emulsion prepared by continuous membrane emulsification

Membrane emulsification provides new ideas for improving the atomization performance of high viscosity heavy oil in catalytic cracking process, thereby improving the distribution of catalytic cracking products. A comprehensive understanding of the micro-explosion characteristics and catalytic cracking of low water content heavy oil emulsion is the key to the application of membrane emulsification technology in heavy oil catalytic cracking process. Therefore, different water droplet sizes and water content of heavy oil emulsion were controllably prepared by continuous membrane emulsification, and their micro-explosion characteristics and catalytic cracking performance were investigated. The evaporation of heavy oil emulsion droplets (water content over 3 vol%) only underwent the heat transfer stage and the fluctuating evaporation stage due to the strong micro-explosion. The micro-explosion delay time of emulsion droplets decreased from 2.631 to 0.434 s/mm2 with increased temperature (300–600 ℃), increased from 0.645 to 1.042 s/mm2 with increased water content (1–5 vol%), and increased from 0.642 to 1.237 s/mm2 with increased average droplet size (1.80–14.6 μm). The child droplets generated after micro-explosion were characterized, and the different heating behaviors were quantitatively distinguished by the average size of the child droplets. Additionally, the micro-explosion performance (i.e. child droplets size and strong micro-explosion probability) of emulsion droplets improved with increasing water content and average water droplet size, while it initially decreased and then increased when the temperature increased. Furthermore, the improvement of micro-explosion performance by membrane emulsification can increase the yield of light oil (up to a maximum increase of 10.82 %) and reduce the yield of coke (up to a maximum decrease of 5.99 %) in the heavy oil emulsion catalytic cracking.

Interfacial adsorption dynamics of solid lipid particles at oil/water interfaces through QCM-D technique

The interfacial adsorption dynamics of solid particles are important processes in the formation of Pickering emulsion, and its stabilities and functionalities are critically dependent on the particle interfacial structures. In this study, we investigated the interfacial behaviors of solid lipid particles (SLPs) within six food-grade SLPs using the quartz crystal microbalance with dissipation (QCM-D) technique. These SLPs had been subjected to surface modification with varying emulsifier contents, specifically 1, 2, and 4 wt% of both Polysorbate 40 (T40) and sodium caseinate (Na-Cas), referred to as T40-SLPs and Na-Cas-SLPs. Two distinct interface behaviors have been identified: Type 1, characterized by with weak interfacial activity, which included the 1 and 2 wt% T40-SLPs, and Type 2, exhibiting stronger interfacial activity, encompassing the 4 wt% T40-SLPs as well as the 1, 2 and 4 wt% Na-Cas-SLPs. Subsequently, the mechanism through which the emulsifiers influenced the interfacial dynamic behaviors was established by correlating the interfacial behaviors with the properties of SLPs. Briefly, larger and more electronegative spherical Na-Cas-SLPs exhibited stronger interfacial activity, which facilitated the formation of smaller and more stable Pickering droplets. The interfacial films formed by the short plate-like T40-SLPs were not sufficiently consolidated, which led to instability of the hydrophobic interfaces. These results were confirmed with macrostability tests of the Pickering emulsions stabilized by the SLPs and are expected to provide basic information for the functionalization of multicomponent Pickering emulsions.

Excipient emulsion prepared with pectin and sodium caseinate to improve the bioaccessibility of carotenoids in mandarin juice: The effect of emulsifier and polymer concentration

Excipient emulsions were prepared using different emulsifiers (pectin and sodium caseinate, individually or compositely) to study the emulsifying properties and their co-digested effects on the retention and bioaccessibility of carotenoids in mandarin juice, which is a good source of carotenoids in people's diet. Results showed that both pectin (PC) and pectin-sodium caseinate (PC-SC) emulsion significantly increased the carotenoids retention and bioaccessibility of mandarin juice, with the effects depending on both emulsifiers and polymer concentration. Whether for PC or PC-SC emulsion, lower pectin content accompanied with lower viscosity showed higher carotenoids bioaccessibility. And for the complexed emulsions, appropriate sodium caseinate addition could be more beneficial in improving carotenoids bioaccessibility. It had been found that the viscosity comparing with particle size seemed to play a more important role in affecting carotenoid bioaccessibility during the co-digestion. This study could provide a basis for improving the carotenoids bioaccessibility in the real system of fruits and vegetables with excipient emulsions.

BIOLOGICAL CONTROL OF RASPBERRY SPUR BLIGHT CAUSED BY &lt;i&gt; DIDYMELLA APPLANATA &lt;/i&gt; USING A MIXTURE OF MICROBIAL AGENTS

The article presents the results of three-year field trials of the mixed experimental bio preparation Phytop 26.82, consisting of the bacteria Bacillus amyloliquefaciens RCIM (All-Russian Collection of Industrial Microorganisms) B 10642, Bacillus licheniformis RCIM (All-Russian Collection of Industrial Microorganisms) B 10562, Bacillus subtilis RCIM (All-Russian Collection of Industrial Microorganisms) Microorganisms) B 10641, nematophagous fungi Arthrobotrys oligospora RCIM (All-Russian Collection of Industrial Microorganisms) F-1141 and Duddingtonia flagrans VKM F-2574, as well as the entomopathogenic fungus Beauveria bassiana, against the central raspberry disease - purple spot in the production plantations of the culture. The concentration of the mixture was 105 CFU/ml. As a comparison, we used the chemical fungicide Topaz, EC (emulsion concentrate) at 0.1% concentration. Previously, the authors evaluated the effect of this microbial mixture on the pathogen Didymella applanata in laboratory conditions, which was the basis of field trials. It was found that when one-year-old raspberry shoots were affected by purple spotting, the treatment of vegetative plants reduced the development of the disease by almost three times for more than a month after applying the microbial mixture. Furthermore, the prevalence of the disease decreased by two times or more relative to the control. The biological efficiency of the experimental bio preparation Phytop 26.82 reached 72.7%, comparable to the Topaz chemical fungicide. This mixed microbiological preparation is promising as an environmentally friendly means of protecting raspberries from purple spotting while suppressing other potential diseases and pests on this crop and reducing the undesirable influence of abiotic environmental factors.

Study on Purification of Emulsified Waste Liquid by Non-thermal Plasma

This paper uses the Non-thermal Plasma produced by dielectric barrier discharge to treat the emulsion waste liquid. The effects of discharge time, peak voltage, and initial concentration of waste liquid and inorganic salt on Chemical Oxygen Demand COD degradation and turbidity removal rate were studied. The primary and secondary order of influencing factors of the COD degradation rate of emulsion cutting waste liquid is discharge time > peak voltage > initial concentration of emulsion cutting waste liquid > inorganic salt type. That is to say, when 0.3000 g of anhydrous calcium chloride is added to the emulsion waste liquid prepared according to the ratio of 1:200, the peak discharge voltage is 30 kV, the discharge time is 4 hours, and the COD degradation rate is the best. The experimental results show that the COD degradation rate is 87.48%. The primary and secondary order of factors affecting the turbidity removal rate of emulsion-cutting waste liquid is peak voltage > inorganic salt type > initial concentration of emulsion-cutting waste liquid > discharge time. The experimental results show that the turbidity removal rate of emulsion waste liquid is 93.21%.