scholarly journals Enhanced Degradation of Sulfonamide Antibiotics by UV Irradiation Combined with Persulfate

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 226
Author(s):  
Zhentao Liu ◽  
Wanpeng Hu ◽  
Haiping Zhang ◽  
Hui Wang ◽  
Ping Sun
Keyword(s):  
Removal Efficiency ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Sulfonamide Antibiotics ◽  
Combined Process ◽  
Broad Application ◽  
Water Matrix ◽  
Process Factors ◽  
Enhanced Degradation ◽  
Uv Oxidation

In this study, the degradation of sulfonamide antibiotics was investigated through persulfate-enhanced UV advanced oxidation process. Factors that may affect the degradation efficiency were analyzed. Results showed that the persulfate imposed a significant enhancement on the UV oxidation process during the sulfathiazole degradation. The combined process of UV/persulfate can effectively remove about 96% of sulfathiazole within 60 min. With the increase in the dosage of persulfate, the removal efficiency increased as well. Different water matrix almost had no effect on the removal efficiency. Two intermediates were found during the sulfathiazole degradation. It can be predicted that the combined process of UV/persulfate has a broad application prospect for removing sulfonamide antibiotics in water treatment.

ZnO nanoparticles immobilized on the surface of stones to study the removal efficiency of 4-nitroaniline by the hybrid advanced oxidation process (UV/ZnO/O3)

2019 ◽  
Vol 1176 ◽  
pp. 766-776 ◽  
Author(s):  
Mohammad Malakootian ◽  
Majid Amiri Gharaghani ◽  
Abbas Dehdarirad ◽  
Mehrdad Khatami ◽  
Mohammad Ahmadian ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Zno Nanoparticles ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation

scholarly journals Removing The Acid Orange 12 Azo Dye from Aqueous Solution Using Sodium Hypochlorite, A Kinetic and Thermodynamic Study

2022 ◽  
Vol 961 (1) ◽  
pp. 012056
Author(s):  
A. B. Hameed ◽  
A. B. Dekhyl ◽  
W. M. Sh. Alabdraba
Keyword(s):  
Removal Efficiency ◽  
Sodium Hypochlorite ◽  
Azo Dye ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Batch Reactor ◽  
Solution Temperature ◽  
Acid Orange ◽  
Initial Ph ◽  
Time Required

Abstract This study investigated the feasibility of using sodium hypochlorite as an advanced oxidation process to remove Acid Orange 12 azo dye from wastewater. For this purpose, batch reactor experiments were done. Several variables to address the efficiency of using this process were considered. These variables are initial pH (5, 7, and 9), the concentration of hypochlorite (50 – 250 mg/l), temperature (20-50) degrees Celsius, and time of electrolysis (1-75) min. also investigate the effects of UV on the process was done. Experimental results showed that the color removal efficiency using NaOCl with UV is more effective than NaOCl alone. The highest removal efficiency was obtained by increasing the concentration of NaOCl from (50-250mg/l) at PH=5. When the solution temperature was increased from (20-50) °C, the removal efficiency increased, and at the same time, the time required was reduced from (20-5) minutes to obtain the highest removal efficiency. The kinetic study also showed that the oxidation process follows a second-order reaction. The thermodynamic functions indicate that the response is spontaneous, endothermic, and increases randomness.

scholarly journals Synergistic advanced oxidation process for enhanced degradation of organic pollutants in spent sulfuric acid over recoverable apricot shell-derived biochar catalyst

RSC Advances ◽  
2022 ◽  
Vol 12 (4) ◽  
pp. 1904-1913
Author(s):  
Jinling Zhang ◽  
Xin Jin ◽  
Hui Zhao ◽  
Chaohe Yang
Keyword(s):  
Sulfuric Acid ◽  
Organic Pollutants ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation ◽  
Apricot Shell ◽  
Enhanced Degradation

A synergistic advanced oxidation process was constructed to degrade the organic pollutants in spent sulfuric acid with apricot shell-derived biochar as the catalyst. It realized the effect of treating waste with waste.

scholarly journals Using Peroxymonosulfate-Ozone Advanced Oxidation For The Treated Wastewater Disinfection and Amoxicillin Micro-Pollutant Removal Simultaneously

2021 ◽  
Author(s):  
Gagik Badalians Gholikandi ◽  
Atefeh Mollazadeh ◽  
Hamidreza Farimaniraad ◽  
Hamidreza Masihi
Keyword(s):  
Removal Efficiency ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Wastewater Treatment Plants ◽  
Oxygen Demand ◽  
Advanced Oxidation ◽  
Pollutant Removal ◽  
Treated Wastewater ◽  
Total Coliforms ◽  
Operational Conditions

Abstract Due to the recent efforts to improve the conventional disinfection methods efficiency of wastewater treatment plants effluent, in this study, the efficiency of the peroxymonosulfate-ozone (PMS+O3) advanced oxidation process in lab scale by the aim of disinfection and simultaneous removal of existing amoxicillin micro-pollutant under optimum operational condition was investigated for the first time. Furthermore, the results were compared with those obtained from the experiments conducted employing persulfate-ozone (PS+O3), hydrogen peroxide-ozone (H2O2+O3), and ozonation (O3) processes. For this purpose, the main parameters including the total coliforms, amoxicillin concentration, turbidity, chemical oxygen demand (COD), biochemical oxygen demand (BOD5), total nitrogen (TN), electrical conductivity (EC), total dissolved solids (TDS), and total suspended solids (TSS) were considered. The test results show that under optimized operational conditions (retention time of 20 minutes, ozone dosage rate of 0.83 mmol/L, and peroxymonosulfate concentration of 0.06 mmol , 99.99% total coliforms (e.g., the number of total coliforms reached consistently less than 400 MPN in 100 ml) removal was reached by peroxymonosulfate-ozone advanced oxidation process. Also, amoxicillin concentration removal efficiency reached 90±2%. In comparison, although the total coliforms reduction of PS+O3 and H2O2+O3 methods in 30 min are approximately the same, the amoxicillin concentration removal efficiency is about 60-70%. Due to the importance of ensuring effluent quality, the related removal efficiency of other considered parameters is also evaluated and presented. Eventually, the peroxymonosulfate-ozone method can be considered as a novel efficient approach for wastewater plants effluent disinfection and amoxicillin micro-pollutant removal simultaneously which is a novel approach.

scholarly journals FLASH Technology: Full-Scale Hospital Waste Water Treatments Adopted in Aceh

2018 ◽  
Vol 31 ◽  
pp. 04005 ◽  
Author(s):  
Rame ◽  
Adeodata Tridecima ◽  
Hadi Pranoto ◽  
Moesliem ◽  
Miftahuddin
Keyword(s):  
Waste Water ◽  
Removal Efficiency ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Complex Mixture ◽  
Full Scale ◽  
Environment And Public Health ◽  
Hospital Waste ◽  
Pre Treatment ◽  
Water Treatments

A Hospital waste water contains a complex mixture of hazardous chemicals and harmful microbes, which can pose a threat to the environment and public health. Some efforts have been carried out in Nangroe Aceh Darussalam (Aceh), Indonesia with the objective of treating hospital waste water effluents on-site before its discharge. Flash technology uses physical and biological pre-treatment, followed by advanced oxidation process based on catalytic ozonation and followed by GAC and PAC filtration. Flash Full-Scale Hospital waste water Treatments in Aceh from different district have been adopted and investigated. Referring to the removal efficiency of macro-pollutants, the collected data demonstrate good removal efficiency of macro-pollutants using Flash technologies. In general, Flash technologies could be considered a solution to the problem of managing hospital waste water.

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