Effect Of Aging Time Research Articles

EFEK WAKTU AGING DAN PENGERINGAN VAKUM PADA ANALISIS PROKSIMAT DAN TINGKAT ASAM AMINO DARI KEFIR SUSU KAMBING

Goat milk kefir has high nutritional value, especially in protein and calcium content and has a low lactose content. Vacuum drying is an alternative to remove the water content in kefir so that it can extend the shelf life because it inhibits bacterial growth. This study determines the effect of aging time and drying time using vacuum drying method on the characteristics and amino acid composition of goat milk kefir (kefir and powder kefir). Fermented goat milk (24 hours) use kefir grains without aging and with aging times of 1, 2, 3, 4 (week). The total titrated acid and fat content were significantly different in kefir, but it is not significantly different in powder kefir. The yield, moisture, ash, protein, fiber, and fat in both kefir and powder kefir did not show significant differences. The best treatment based on the exponential comparison method for both powder kefir and kefir was 3 weeks of aging time. Therefore, the amino acid components in powder kefir and kefir underwent changes. The highest total amino acids in kefir was kefir without aging. The highest amino acid of powder kefir was obtained after 2 weeks of aging time.

Effect of slaughter age and postmortem aging time on tenderness and water-holding capacity of yak (Bos grunniens) longissimus thoracis muscle

The present study investigated the effect of slaughter age (2.43 ± 0.20, 4.15 ± 0.19, 6.62 ± 0.18, 10.59 ± 0.74 years) and postmortem aging time (1, 24, and 72 h) on the tenderness and water-holding capacity (WHC) of yak longissimus thoracis muscles to determine the most suitable age for slaughter to ensure product consistency. Under conventional postmortem aging conditions (4 °C), muscles of each age group exhibited the effect of cold shortening. Once the cold shortening occurred, the age effect on thickening muscle fiber and developing cross-links of collagen, considered to intensify the meat toughness, became less important. Owing to greater carcass weight and intramuscular fat, muscles of the older carcass (over 6-year-old) were less influenced by the cold shortening effect during the chilling process and showed lessened sarcomere contraction, delayed formation of drip loss channels, and increased level of myofibril fragmentation index (MFI) and myofiber structural disintegration, resulting in greater tenderness and WHC, especially 6–7 years group. Aging of 72 h structurally disintegrated the collagen cross-linking and integrity of muscle fibers and elevated the MFI, improving the meat tenderness. Therefore, the suitable slaughter age for yak is 6–7 years old and after 72 h aging, improved quality of yak meat can be obtained.

An Experimental Study on Novel Gas Discharge Tubes With Graphene as Electron Emission Material

Electrical equipment is subjected to gas discharge tube (GDT) direct current (dc) breakdown voltage dispersion and breakdown voltage drop after a surge. It is noteworthy that GDT damage may even cause the failure of electrical equipment. Accordingly, the chemical vapor deposition (CVD) of graphene was proposed in this study as an electron emission material of the GDT based on the existing electron powder GDT. The GDT exhibiting a voltage class of 470 V was prepared, and its structure and surge characteristics were analyzed. The effects of gas pressure, aging time, and ambient temperature on the breakdown voltage of the graphene GDT were studied. The surge process of the graphene GDT was simulated using the 8/ <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$20~\mu \text{s}$ </tex-math></inline-formula> impulse current generator, and the resistance ability of the graphene GDT against the surge was examined. Moreover, it was compared with the same type of commercial electron powder GDT. As indicated by the experimental results, a positive correlation was identified between the gas pressure and the dc breakdown voltage of the graphene GDT under a certain pressure. The effect of aging time and ambient temperature on dc breakdown voltage was limited. The breakdown voltage of the graphene GDT was first increased and then decreased with the increase in the number of surges. After 100 surges, the breakdown voltage of the graphene GDT stabilized at 350 V, whose stability was better than that of the electron powder GDT. The above-described analysis confirmed that graphene GDT exhibits better surge resistance ability.

Modification of Zeolite Made from Coal Fly Ash with TiO2: Effect of Aging Time on Physical and Optical Properties

The high levels of metal oxides, SiO2, and Al2O3 give coal fly ash the potential for development into zeolite. Zeolite was prepared from fly ash by combining alkaline fusion with hydrothermal treatment. Using this method results in a high surface area, high mechanical properties, and high crystallinity of the sample. Zeolite as a product is modified by TiO2. This study was intended to determine the effect of the operating process in zeolite synthesis from coal fly ash on the types and properties of zeolite and the effect of the aging time of TiO2-modified zeolite at 14, 16, and 20 h. Investigating its physical and optical properties shows that the product contains zeolite X as the major phase. The zeolite X itself contains 96% crystallinity and a specific surface area of 164.78 m2/g. Meanwhile, TiO2/zeolite increases the light absorption in the visible region. Diffuse reflectance spectroscopy showed that a 14 h aging time results in the lowest band gap energy of 2.50 eV and the largest surface area of 189.483 m2/g. X-ray diffraction characterization found that TiO2/zeolite is an anatase crystal (~9 nm) with 99% crystallinity. A pilot examination of the photodegradation performance of the TiO2/zeolite nanocomposite was evaluated using 5 mg/L methylene blue and compared with that of zeolite alone.

Effect of aging time on the interfacial evolution and mechanical properties of a TA3/V/10CrNiCu hot compression bonding joint

The present study analyzed the influence of aging time on the microstructure and mechanical properties of a TA3/10CrNiCu bonding interface fabricated via hot compression bonding (HCB) with vanadium (V) as the interlayer. The results show that there are no obvious defects and intermetallic compounds (IMCs) at the interface without aging. With aging at 850 °C for 1 and 4 h, the IMC (FeV)σ, VC, and discontinuous micro-voids appeared at the V/steel interface, while a continuous reaction layer formed after an aging time of up to 24 h. In contrast, the V/Ti interface formed a continuous solid solution (SS) at different aging times. The addition of V prevented the formation of Fe-Ti IMCs at the interface when the titanium and steel were directly bonded, but the tensile strength decreases from 422 MPa to 270 MPa with the increase of aging time due to the presence of (FeV)σ, VC, and micro-voids after high-temperature aging.

Characterization and Production of Goat Milk Kefir-Peptide on Triglyceride Synthesis of Cell Model of 3T3-L1

Goat milk kefir (GMK) refers to fermented products, generated through fermenting milk with microbial culture called kefir grains. Prior studies have reported the changes in kefir quality properties during aging process in which fermentation continues, resulting in changes of the peptide content. This research aims to investigate the effect of aging time on GMK–peptide characteristics to inhibite triglyceride syntheses on cells model of 3T3-L1. In this study, GMK were stored at 4 ± 1 oC for 0, 2, 4, 6 and 8 weeks, respectively. The protein profile was characterizedby implementing SDS-PAGE. The result of experiment indicated no protein degradation during the 6 weeks of aging period particularly for high molecular weight at 84 kDa, 80 kDa and 65 kDa. The GMK-supernatant from 8 weeks storage was performed by applying ultrafiltration membrane cut off &lt; 30 kDa (UFC8 030.08). GMK-filtrate fractions (GMK-peptide) was collected as peptides. After 8 weeks of aging period, kefir protein profile was found to consist of peptide fractions and amino acid. The proteolytic activity of kefir grain increased linearly along with aging time (0-8 weeks). During aging period, the proteolytic activity of grain kefir released peptides and amino acid. In particular, the antioxidant activities were found significantly different (p&lt;0.05) during aging periods. The antioxidant activities of GMK-peptide increased along with the elevating peptide concentration, from 3.30 % to 55.73%, with derivate by GMK-peptides of 2.75 – 10.39 mg/ml. Obesity associated with adipocyte hypertrophy occurred when TG accumulation.GMK-peptide of 100 mg/ml indicated the lowest TG level (2.00 ± 0.03 mg/dl). This finding was in line with the inhibition of TG synthesis (61.14 ± 3.26 %). However, GMK-peptide contained antioxidant potency due to may be corelated with decreasing TG synthesis.The study thus suggested the important role of kefir to prolong aging in generating higher peptide bioactive as antioxidant and inhibition of TG synthesis of cell model of 3T3-L1

Statistical analysis of gelation mechanism of high-temperature CO2-responsive smart gel system

The CO2 capture, utilization and storage (CCUS) are very important. CO2-responsive materials have good CO2 responsiveness and can play a certain role in CCUS. However, the use temperature of CO2-responsive surfactant is relatively low, and the main factors affecting their performance are still not clear, seriously affecting their large-scale application. In this work, a kind of high-temperature CO2-responsive surfactant was synthesized, and it can form a high-temperature CO2-responsive smart gel system when combined with counter ion salt. The effects of temperature, surfactant concentration, salinity, aging time and oil content on the properties of the CO2-responsive smart gel system were studied by means of rheological experiments and SEM characterization. Combined with statistical analysis methods, a large number of experimental data were analyzed and fitted, a mathematical model was constructed. The mathematical model was highly feasible and statistically significant. Based on the mathematical model, the main factors affecting the performance of the CO2-responsive smart gel system were analyzed, and the gelation mechanism of the gel system was obtained. This work is expected to provide some guidance for the future application of the CO2-responsive smart gel.

Competitive Adsorption of Interfacially Active Nanoparticles and Anionic Surfactant at the Crude Oil–Water Interface

The interfacial activity of poly(N-isopropylacrylamide) (pNIPAM) nanoparticles in the absence and presence of an anionic surfactant (sodium dodecyl sulfate, SDS) was studied at a crude oil-water interface. Both species are interfacially active and can lower the interfacial tension, but when mixed together, the interfacial composition was found to depend on the aging time and total component concentration. With the total component concentration less than 0.005 wt %, the reduced interfacial tension by pNIPAM was greater than SDS; thus, pNIPAM has a greater affinity to partition at the crude oil-water interface. However, the lower molecular weight (smaller molecule) of SDS compared to pNIPAM meant that it rapidly partitioned at the oil-water interface. When mixed, the interfacial composition was more SDS-like for low total component concentrations (≤ 0.001 wt %), while above, the interfacial composition was more pNIPAM-like, similar to the single component response. Applying a weighted arithmetic mean approach, the surface-active contribution (%) could be approximated for each component, pNIPAM and SDS. Even though SDS rapidly partitioned at the oil-water interface, it was shown to be displaced by the pNIPAM nanoparticles, and for the highest total component concentration, pNIPAM nanoparticles were predominantly contributing to the reduced oil-water interfacial tension. These findings have implications for the design and performance of fluids that are used to enhance crude oil production from reservoirs, particularly highlighting the aging time and component concentration effects to modify interfacial tensions.

Effect of aging time on crack initiation mechanism of precipitation hardening stainless steel in very high cycle fatigue regime

Very high cycle fatigue behavior of precipitation hardening stainless steel (PHSS) with various aging times was investigated. The PHSS aged at 480°C for 1 h exhibits the highest fatigue strength, followed by aged for 4 h and 0.5 h. Both subsurface or internal inclusion induced crack initiation (IICI) and non-inclusion induced crack initiation (NIICI) were observed. NIICI phenomenon is due to the nucleation and connection of microvoids within δ-ferrite. Aging treatment has an important influence on the dominant crack initiation mechanism by changing the interaction of dislocations and copper precipitates, which ultimately affects fatigue performance.

Investigating the effects of aging time on corrosion resistance and antibacterial property of newly designed medium-entropy super austenitic stainless steels

In this study, a newly developed medium-entropy austenitic stainless steel (MEASS) was subjected to a heat treatment to examine the effects of different aging times on its strength, corrosion resistance, and antibacterial performance. The properties of the MEASS were compared with those of a commercial stainless steel (UNS S31254). All of the aged MEASS specimens exhibited higher hardness than the solution-treated S31254 and MEASS owing to the precipitation of the Cu-rich phase, as characterized by a transmission electron microscope (TEM) and scanning TEM (STEM). However, as aged at a temperature of 700 °C for longer than 4 h, the aged MEASS specimens were prone to intergranular corrosion. This was owing to the lower integrity of the passive film as a result of the precipitation of the M23C6 carbides and σ phases at the grain boundaries. Although the antibacterial rate increased from 83.9% to 98.1% as the aging time was prolonged from 4 h to 48 h, the preliminary results suggested that the MEASS specimen subjected to the aging treatment for 4 h exhibited an optimal combination of strength, corrosion resistance, and antibacterial performance.

Changes in protective properties of zirconia and silica sol-gel layers over time

The study investigated the effect of aging time on the protective properties of submicron thickness sol-gel coatings. Coatings were based on zirconia and silica modified with fluoroalkyl substituents that were deposited on P265GH steel and were aged for 3 years. The corrosion tests were carried out in sodium chloride solution and liquid caprolactam. The physicochemical properties of the obtained materials were determined using scanning electron microscopy (SEM), Raman spectrometry, and nuclear magnetic resonance (NMR). The roughness and wettability of the tested samples were also measured with a profilometer and tensiometer. The protective properties were determined by electrochemical and immersion tests. The coating containing ZrO2 was more stable over time. In the case of the ‘SiO2 + F’ fluorine-modified coating, polarization resistance increased by about 3 orders of magnitude compared to the uncoated P265GH steel. However, after 3 years, the protective nature of this type of coating had deteriorated, compared to its initial state. Moreover, it seems that the ‘ZrO2’ coating better covered all valleys in the surface, forming a smoother surface, while the ‘SiO2 + F’ coating better reproduced the surface topography, also depositing on the ridged surface and creating a thin continuous film.

Synergistic Au passivation and prolonged aging optimization enhance the long-term catalytic stability of porous YSZ/Pt electrodes

The catalytic activity of an oxygen-pumping electrode is very important to the performance of amperometric NOx (NO and NO2) sensors. To enhance the stability of electrochemical NOx sensors based on Pt electrodes, we fabricated sensitive electrodes of Pt-based materials doped with small and different Au contents on 8% mol Y2O3-stabilized ZrO2 (8YSZ) solid electrolyte substrates by screen printing and high-temperature co-firing. The effects of Au on the porous Pt electrode’s catalytic activity and long-term stability were investigated, and the results are as follows. First, the catalytic capacity of the Pt–Au alloy electrode decreases with increasing Au content due to the inhibition of the oxygen adsorption on Au, which decreases the amount of oxygen participating in the reaction at triple-phase boundaries (TPBs). Second, the catalytic ability of the alloy electrode decreases exponentially with aging time due to the reduction in the length of TPBs caused by the significant reduction in the number of holes in the electrode, and the oxidation of Pt. In addition, the conductivity decay rate of the electrode decreases with increasing Au doping. This indicates that Pt-based electrodes doped with varying Au contents, long-term, and high-temperature aging have notably regular effects on the catalytic activity of oxygen-pumping electrodes, for which we have developed a model of Au passivation and the synergistic effect of aging time on the activity of Pt-based oxygen-pumping electrodes.

An experimental investigation on the influence of Sn addition and aging time on the mechanical and micro structural properties of AZ80-1.2RE magnesium alloy

This study investigated the effect of tin (0, 6, and 9 wt%) and aging time (0, 16, 24, and 32 hrs) on the microstructure and mechanical properties of the AZ80-1.2RE Mg alloy. The results obtained indicate that the addition of Sn improved the mechanical properties. For the AZ80-1.2RE alloy, upon Sn addition, strength of 195 MPa and percentage elongation of 7.6 are observed to be found at 6 wt% Sn, which is attributed to the precipitates of Al2RE, Mg2Sn, and Mg-Sn-RE phases. After heat treatment and aging, the properties of the casted alloys were found to be affected. As aging time increases, small precipitates are observed to be dissolved in primary Mg phase, due to which the properties are found to be decreased from the as-cast condition to aging at 16 hours. The strength of the 6wt% Sn alloy decreased due to the high stress concentration at the large precipitate site during aging from 16 hours to 24 hours and then increased due to the grain boundary strengthening effect at the 32-hour aging time.

Aged-beef quality and fatty acid profile of subcutaneous fat from Nellore and Nellore × Angus crossbred young bulls finished in the feedlot with a high-lipid diet

Context Although beef consumption has been linked to increased blood cholesterol, it has positive impacts on human health and provides essential nutrients of high biological value. Aims This study investigated the effects of aging time on beef quality, the chemical composition of the Longissimus thoracis (LT) muscle, and the metabolite and fatty acid profile of the subcutaneous fat from young bulls finished in feedlot with a high-lipid diet. Methods Fifty young bulls were divided into groups following their breed composition, Nellore (n = 25) and Angus × Nellore crossbred (n = 25), and randomly assigned into four pens. The feedlot phase consisted of 105 days of feed, and the diet (80% concentrate) was formulated to meet or safely exceed the requirements of beef cattle to achieve an average daily gain of 1.6 kg/day. After slaughter, meat samples were collected between the 11th and 13th ribs 24 h postmortem. Steaks were aged for 1, 14, 28, and 42 days. Key results No differences were observed for total weight loss, drip loss, and cooking loss between the genetic groups (P &gt; 0.05). An increase in lipid oxidation was observed for TBARS in the LT beef and subcutaneous fat (P &lt; 0.01). Shear force was influenced by breed and aging time (P &lt; 0.01). There was a significant interaction between aging time and the parameters L* a*, b* c*, and h* (P &lt; 0.01). The crossbred animals had greater (P &lt; 0.01) concentrations of collagen, and Nellore had greater (P &lt; 0.01) concentration of moisture in their LT beef. In total, 33 metabolites were identified in beef extract, and differences were observed in beef from both groups. Nellore animals had higher concentrations of polyunsaturated fatty acids and conjugated linoleic acid. Conclusions The shear force, collagen concentration, and moisture were affected by breeds, while the aging time affected lipid oxidation, shear force, and colour parameters. Different breeds and a high-lipid diet modified the metabolite profile of meat and the profile of subcutaneous fat. Implications These findings suggest that genetic manipulation could potentially be used to improve beef quality.

The Effect of Temperature and Aging Time on The Micro Structure and Hardness of Ni-Al-Ti-Ge Alloy

Intermetallic alloy is a combination consists of two metal compounds or more. One of intermetallic alloy that can be used is nickel. Nickel is a corrosion resistant metal and withstands high temperature. Intermetallic alloy can be used for application on aircraft components such as turbin gas engine that operate in high temperature and extreme environment. This study is conducted to find out the changes of micro structure and hardness in NiAlTi material added by germanium of 1,5% as doping. In this study, heat treatment process was carried out with variation of temperature and aging time. The heat treatment included solution treatment and aging process. Solution treatment process was carried out at 1000 o C using tube furnace with holding temperature time for 2 hours. Aging process was carried out at 700 o C, 800 o C, 870 o C for 1, 2 and 3 hours for each temperature. Based on the hardness result, solution treatment heat treatment increase the grain size and also hardness of NiAlTi+1,5%Ge due to intermetallic compound formed in the alloy. Aging treatment increase the grain size and also hardness value. Maximum hardness take place at 870 o C for 3 hours with hardness of 45 HRc. Characterization by optical microscope and SEM showed that the alloy contain dendritic and interdendritic microstructure. Examination by XRD and EDS shows that intermetallic compound formed in all NiAlTi+1,5%Ge specimens are dominated by intermetallic of Ni 3 Al (Ɣ’).

Effect of direct aging treatment on microstructure, mechanical and corrosion properties of a Si-Zr-Er modified Al-Zn-Mg-Cu alloy prepared by selective laser melting technology

In this paper, a novel Al-Zn-Mg-Cu alloy with Si-Zr-Er addition was prepared by selective laser melting (SLM) technology. Effects of aging temperature and aging time on the microstructure, mechanical properties and corrosion resistance of the alloy were systematically studied. Results show that unique bimodal grain structure is formed in the as-printed and direct aging treated alloys, which is composed of fine equiaxed grains at the molten pool boundary and coarse columnar grains in the molten pool. Mechanical properties of the alloy can be improved by direct aging treatment, and the highest tensile strength reached 465 MPa. The precipitated Mg2Si and Al3(Er,Zr) with L12 structure play an important role in improving the mechanical properties. The precipitates and fraction of high-angle grain boundaries are important to evaluate the corrosion resistance of the investigated alloy. Considering the mechanical properties and corrosion resistance, the optimal aging process of the alloy studied in this paper is 150 °C × 4 h.

Induction of Apoptosis via Inactivating PI3K/AKT Pathway in Colorectal Cancer Cells Using Aged Chinese Hakka Stir-Fried Green Tea Extract.

Food extract supplements, with high functional activity and low side effects, play a recognized role in the adjunctive therapy of human colorectal cancer. The present study reported a new functional beverage, which is a type of Chinese Hakka stir-fried green tea (HSGT) aged for several years. The extracts of the lyophilized powder of five HSGT samples with different aging periods were analyzed with high-performance liquid chromatography. The major components of the extract were found to include polyphenols, catechins, amino acids, catechins, gallic acid and caffeine. The tea extracts were also investigated for their therapeutic activity against human colorectal cancer cells, HT-29, an epithelial cell isolated from the primary tumor. The effect of different aging time of the tea on the anticancer potency was compared. Our results showed that, at the cellular level, all the extracts of the aged teas significantly inhibited the proliferation of HT-29 in a concentration-dependent manner. In particular, two samples prepared in 2015 (15Y, aged for 6 years) and 2019 (19Y, aged for 2 years) exhibited the highest inhibition rate for 48 h treatment (cell viability was 50% at 0.2 mg/mL). Further, all the aged tea extracts examined were able to enhance the apoptosis of HT-29 cells (apoptosis rate > 25%) and block the transition of G1/S phase (cell-cycle distribution (CSD) from <20% to >30%) population to G2/M phase (CSD from nearly 30% to nearly 10%) at 0.2 mg/mL for 24 h or 48 h. Western blotting results also showed that the tea extracts inhibited cyclin-dependent kinases 2/4 (CDK2, CDK4) and CylinB1 protein expression, as well as increased poly ADP-ribose polymerase (PRAP) expression and Bcl2-associated X (Bax)/B-cell lymphoma-2 (Bcl2) ratio. In addition, an upstream signal of one of the above proteins, phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT) signalling, was found to be involved in the regulation, as evidenced by the inhibition of phosphorylated PI3K and AKT by the extracts of the aged tea. Therefore, our study reveals that traditional Chinese aged tea (HSGT) may inhibit colon cancer cell proliferation, cell-cycle progression and promoted apoptosis of colon cancer cells by inactivating PI3K/AKT signalling.

MoS2/CF synergistic enhancement to improve the friction and wear properties of UHMWPE composites

Ultrahigh molecular weight polyethylene (UHMWPE) is widely used in industrial machinery due to its excellent self-lubricant properties, and the development of long-lived UHMWPE matrix composite with low friction and wear is significant to solve the movement problems. In this paper, the UHMWPE/carbon fiber (CF)/MoS2 composites were prepared and the effect of aging time on the mechanical and frictional behavior of composites were investigated. Results showed that the addition of CF and MoS2 can significantly improve the frictional performance due to the synergistic effect. A low friction coefficient (0.11–0.15) and wear rates (3.8–7.6 × 10−5 mm3/Nm) were observed for UHMWPE/CF/MoS2 composite. The worn surface analysis presented that as the aging time increases, the main wear mechanism changing from abrasive wear to fatigue wear.

Large intraparticle mesoporosity of hierarchical ZSM-5 synthesized from kaolin using silicalite seed: effect of aging time and temperature

Large intraparticle mesoporosity of hierarchical ZSM-5 synthesized from kaolin using silicalite seed: effect of aging time and temperature

Activation of Peroxymonosulfate by Fe0 for the Degradation of BTEX: Effects of Aging Time and Interfering Ions

Resolving three environmental challenges simultaneously—recycling bone waste, aggregation, oxidation of bare nZVI and benzene, toluene, ethylbenzene, and p-xylene (BTEX) contamination—was conducted by fabricating a highly stable and efficient activator of peroxymonosulfate. In this work, a novel heterogeneous catalyst, ostrich bone ash-supported nanoscale zero-valent iron (Fe0-OBA) prepared by pyrolysis of animal bones and reduced Fe2+ on the surface of it, was used for the activation of peroxymonosulfate (PMS). Advantageous properties such as extensive availability, low production cost, and high thermal stability make OBA an appealing carbonaceous material for heterogeneous catalysis. The TEM and SEM results revealed that the black ball-shaped nZVI particles were uniformly dispersed on the surface of OBA. The Fe0-OBA composite had a porous structure with a specific surface area of 109 m2 g−1 according to BET analysis. With BTEX as the refractory pollutant, the PMS-based Fe0-OBA system shows great degradation performance as compared to the homogeneous Fe2+/PMS system. The effects of various parameters, such as initial pH (2–9), temperature (25–45 °C), initial BTEX concentration (50–200 mg L−1), PMS dosage (0.5–1.25 mM), time of reaction (0–60 min), and Fe0-OBA dosage (0.5–5 g L−1) on the BTEX degradation, have been discussed in detail. The pseudo-first-order kinetic model can describe the BTEX degradation by the PMS-based Fe0-OBA system. The excellent stability of Fe0-OBA even after 10 years, while maintaining the degradation efficiency, shows the high potential of it in a wide range of practical applications. This study illustrated that Fe0-OBA could be an effective activator of PMS for the degradation of stubborn organic contaminants in water and wastewater.