Ultrasonic-assisted ozone degradation of organic pollutants in industrial sulfuric acid

Le, Thiquynhxuan; Hu, Jue; Ravindra, A. V.; Xv, Haoran; Zhang, Libo; Wang, Shixing; Yin, Shaohua

doi:10.1016/j.ultsonch.2022.106043

Cited by 19 publications

(4 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The oxidizing effect of O 3 relies on the O 3 molecule itself and the oxidizing radicals it generates [24] . However, utilizing ozone alone to oxidize refractory or high-concentration pollutants shows low oxidation efficiency and is time-consuming because of its low solubility in solution, low mass transfer efficiency, and low free radical yield [25] . Increasing the flow rate of ozone gas can improve its oxidation effect while increasing the cost.…”

Section: Resultsmentioning

confidence: 99%

Treatment of complex sulfur-containing solutions in ammonia desulfurization ammonium sulfate production by ultrasonic-assisted ozone technology

Qu¹,

Ravindra

Ma³

et al. 2023

Ultrasonics Sonochemistry

Self Cite

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Treatment of complex sulfur-containing solutions in ammonia desulfurization ammonium sulfate production by ultrasonic-assisted ozone technology

Qu¹,

Ravindra

Ma³

et al. 2023

Ultrasonics Sonochemistry

Self Cite

View full text Add to dashboard Cite

“…According to Chiha et al [46], the degradation products increased from 20°C to 30°C as temperature increased and tended to be constant and even decreased when the temperature was higher than 30 o C. The decrease in the efficiency of the organic compound degradation process using the hybrid ozonation-ultrasonic method is caused by a decrease in ozone solubility and a decrease in the formation of radical compounds due to an increase in water vapor in the bubbles, which provides a cushioning effect on the collapsed bubbles so that the bursting of cavitation bubbles only produces low energy [47]. A flow rate of 2 L/min of ozone has a significant influence on the results, as shown by Wang et al [48], that the ozone flow rate is increased, and degradation efficiency increases because cavitation bubbles form under ultrasonic irradiation, accelerating the mass transfer of ozone and causing radical compounds to form that can accelerate organic compound degradation. However, excessive ozone flow rates can cause greater turbulence, decreasing the contact time between ozone and water and shorter biomass, thereby reducing the degradation percentage [49].…”

Section: 3effect and Interaction Of Variables Process On Lignin Degra...mentioning

confidence: 95%

Parametric Optimization of Oil Palm Mesocarp Fiber Valorization With Hybrid Ozonation-Ultrasonic Pretreatment Method

Anggoro¹,

Dewi

Buchori³

et al. 2023

IIUMEJ

View full text Add to dashboard Cite

Oil palm mesocarp fiber is a promising lignocellulosic biomass as a raw material for valorizing biomass into more valuable products such as second-generation biofuels, biocomposites, or bioenergy. However, the lignin composition present in lignocellulosic biomass provides resistance to the valorization process and protects the cellulose composition, thereby limiting the conversion of cellulose into more valuable products. The hybrid ozonation-ultrasonic method as a lignin-degrading method is starting to be considered an effective method. Additionally, a Box-Behnken Design (BBD) was employed to investigate each independent variable's effect on pretreatment process conditions using the response surface methodology (RSM), namely reaction time (30-90) min, reaction temperature (20 -40) oC and ozone flow rate (1-3) L/min to the response of the percentage of lignin degradation (%). The optimum condition of the pretreatment process is determined using the desirability function graph. The results showed that reaction time, reaction temperature, and ozone flow rate had a significant effect on lignin degradation (p <0.05). The optimum conditions obtained the highest percentage of lignin degradation, namely 92.08% at a reaction temperature of 30 oC with an ozone flow rate of 2 L/min for 60 minutes reaction time. The decrease in lignin absorption peaks at 1638 cm-1 and 1427 cm-1 was supported by the results of the analysis of increased crystallinity in the sample after the pretreatment of lignin degradation to 80.20% and was validated by changes in the morphology of the mesocarp fiber after the pretreatment process indicating that the lignin compound had been successfully degraded from cellulose products of mesocarp fibers. ABSTRAK: Sabut gentian kelapa sawit berpotensi sebagai bahan mentah biojisim lignoselulosa bagi menambah nilai produk biojisim seperti bahan bio api generasi kedua, biokomposit atau biotenaga. Walau bagaimanapun, komposisi lignin yang wujud dalam biojisim lignoselulosa menentang proses tambah nilai dan melindungi komposisi selulosa, dengan itu mengehadkan penukaran selulosa kepada produk yang lebih berharga. Kaedah hibrid ozonasi-ultrasonik sebagai kaedah merendahkan lignin, mula mendapat perhatian sebagai kaedah berkesan. Selain itu, Reka Bentuk Kotak-Behnken (BBD) telah digunakan bagi menyiasat setiap kesan pembolehubah bebas pada keadaan proses prarawatan menggunakan kaedah permukaan tindak balas (RSM), iaitu masa tindak balas (30-90) min, suhu tindak balas (20 -40) oC dan kadar aliran ozon (1-3) L/min terhadap tindak balas pada peratusan degradasi lignin (%). Keadaan optimum bagi proses prarawatan ditentukan menggunakan graf fungsi keboleh inginan. Dapatan kajian menunjukkan bahawa masa tindak balas, suhu tindak balas, dan kadar aliran ozon mempunyai kesan yang signifikan terhadap degradasi lignin (p<0.05). Keadaan optimum peratusan degradasi lignin tertinggi adalah pada 92.08% pada suhu tindak balas 30 oC dengan kadar aliran ozon 2 L/min selama 60 minit masa tindak balas. Penurunan puncak penyerapan lignin pada 1638 cm-1 dan 1427 cm-1 disokong oleh keputusan analisis peningkatan kehabluran sampel selepas prarawatan degradasi lignin sebanyak 80.20% dan telah disahkan oleh perubahan morfologi sabut gentian selepas proses prarawatan menunjukkan bahawa sebatian lignin telah berjaya didegradasi daripada produk selulosa sabut gentian.

show abstract

“…In 1994, the first issue of the academic journal of sonochemistry, Ultrasonics Sonochemistry , was published. Currently sonochemistry technology has a wide range of applications in organic synthesis [37] , [38] , [39] , [40] , materials [41] , [42] , [43] , [44] , [45] , organometallic chemistry [46] , [47] and industrial manufacturing [48] , [49] .…”

Section: Brief History Of Us Technologymentioning

confidence: 99%

Ultrasound technology assisted colloidal nanocrystal synthesis and biomedical applications

Jiao,

Mao,

Razzaq

et al. 2024

Ultrasonics Sonochemistry

View full text Add to dashboard Cite

Ultrasonic-assisted ozone degradation of organic pollutants in industrial sulfuric acid

Cited by 19 publications

References 44 publications

Treatment of complex sulfur-containing solutions in ammonia desulfurization ammonium sulfate production by ultrasonic-assisted ozone technology

Treatment of complex sulfur-containing solutions in ammonia desulfurization ammonium sulfate production by ultrasonic-assisted ozone technology

Parametric Optimization of Oil Palm Mesocarp Fiber Valorization With Hybrid Ozonation-Ultrasonic Pretreatment Method

Ultrasound technology assisted colloidal nanocrystal synthesis and biomedical applications

Contact Info

Product

Resources

About