Photochemical degradation and mineralization of 4-chlorophenol

Çatalkaya, Ebru Çokay; Bali, Ulusoy; Şengül, Füsun

doi:10.1065/espr2002.10.135

Cited by 50 publications

(26 citation statements)

References 12 publications

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“…In order to meet increasingly stringent discharge limits, pulp mills are forced to adopt technologically advanced treatment systems. Organic compounds such as chlorophenols are not fully degraded by biological processes which require advanced oxidation after biological treatment to reduce refractory organics and color of the pulp mill wastewater [4,5,[7][8][9][10][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Color, TOC and AOX removals from pulp mill effluent by advanced oxidation processes: A comparative study

Çatalkaya

Kargı

2007

Journal of Hazardous Materials

183

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Section: Introductionmentioning

confidence: 99%

Color, TOC and AOX removals from pulp mill effluent by advanced oxidation processes: A comparative study

Çatalkaya

Kargı

2007

Journal of Hazardous Materials

183

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“…The efficiency of subsequent biological treatment stages can be increased (Kamali and Khodaparast 2015). Whether they are used as a pretreatment or for the polishing of water after biological treatment, AOPs can reduce organic refractory and toxic compounds from pulp and paper mill effluents (Catalkaya et al 2003;Hsueh et al 2005). AOPs include ozone, various oxidizing species used in combination with catalysts or UV light, and the Fenton method, which is a catalytic oxidation method based on electron transfer between H2O2 and metal ions (Fe 2+ ) serving as homogeneous catalysts (Ince et al 1997;Catalkaya and Kargi 2007).…”

Section: Advanced Oxidation Systemsmentioning

confidence: 99%

Wastewater Treatment and Reclamation: A Review of Pulp and Paper Industry Practices and Opportunities

Hubbe

Metts

Hermosilla

et al. 2016

BioRes

182

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The pulp and paper (P&P) industry worldwide has achieved substantial progress in treating both process water and wastewater, thus limiting the discharge of pollutants to receiving waters. This review covers a variety of wastewater treatment methods, which provide P&P companies with costeffective ways to limit the release of biological or chemical oxygen demand, toxicity, solids, color, and other indicators of pollutant load. Conventional wastewater treatment systems, often comprising primary clarification followed by activated sludge processes, have been widely implemented in the P&P industry. Higher levels of pollutant removal can be achieved by supplementary treatments, which can include anaerobic biological stages, advanced oxidation processes, bioreactors, and membrane filtration technologies. Improvements in the performance of wastewater treatment operations often can be achieved by effective measurement technologies and by strategic addition of agents including coagulants, flocculants, filter aids, and optimized fungal or bacterial cultures. In addition, P&P mills can implement upstream process changes, including dissolved-air-flotation (DAF) systems, filtration save-alls, and kidney-like operations to purify process waters, thus reducing the load of pollutants and the volume of effluent being discharged to end-of-pipe wastewater treatment plants. Keywords: Wastewater treatment; Pulp and paper manufacturing; Advanced oxidation; Membrane technologies; Clarification; Activated sludgeContact information: a: North Carolina State University, Dept. of Forest Biomaterials, Campus Box 8005, Raleigh, NC 29695-8005; b: WestRock Company, Water and Waste Treatment, 600 S 8th St, Fernandina Beach, FL 32034; c: Department of Agricultural and Forestry Engineering, University of Valladolid, Campus Duques de Soria, E-42004 Soria, Spain; d: Complutense University of Madrid, Department of Chemical Engineering, Ingn. Quim, Facultad de Ciencias Químicas, Ciudad Universitaria s/n,S-N, E-28040 Madrid, Spain; e: Concordia University, Dept. Bldg. Civil & Environm. Engn., 1455 Maisonneuve Blvd, West Montreal, PQ H3G 1M8, Canada; f: University of Jyväskylä, Dept. Chem., Box 35, FI-40014 Jyväskylä, Finland; g: Department of Biology, Center for Environmental and Marine Studies, CESAM, University of Aveiro, 3810-193 Aveiro, Portugal; h: Department of Environment and Planning, Center for Environmental and Marine Studies, CESAM, Aveiro & Department of Materials and Ceramics, Institute of Materials, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal; i: FPInnovations, 570 St. Jean Blvd., Pointe Claire, PQ H9R 3J9, Canada; * Corresponding author: hubbe@ncsu.edu Contents of the Article INTRODUCTIONThe pulp and paper (P&P) industry occupies a challenging position with respect to the natural environment. On the positive side, the industry is based on the usage of renewable, photosynthetic resources. On the other hand, the industry discharges huge quantities of aqueous effluents. Large volumes (up to 70 m 3 ) of wastewater ...

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“…This trend can be explained by the fact that H 2 O 2 itself acts as an effective hydroxyl radical scavenger at concentrations that are specific for the pollutant in question. This is encountered during the destruction of not only dyes but also many organic compounds as well [30]. It can be concluded that a H 2 O 2 dose higher than 20 and 50 mM for RB5 and DO25, respectively, corresponds to an unprofitable consumption of H 2 O 2 .…”

Section: Resultsmentioning

confidence: 97%

Study of photochemical and sonochemical processes efficiency for degradation of dyes in aqueous solution

Maleki

Mahvi

Ebrahimi

et al. 2010

Korean J. Chem. Eng.

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The degradation of two commercially available dyestuffs (C.I. Reactive Black 5 and C.I. Disperse Orange 25) by ultraviolet radiation (UV), ultrasonic irradiation (US), UV/H 2 O 2 and US/H 2 O 2 processes was investigated in a laboratory-scale batch photoreactor equipped with a 55 W immersed-type low-pressure mercury vapor lamp and a sonoreactor with low frequency (42 kHz) plate type transducer at 170 W of acoustic power. The toxicity was also evaluated in acute toxicity studies using Daphnia magna. Results showed that color removal efficiencies by US and US/H 2 O 2 processes were negligible for both dyes. Almost complete disappearance of Reactive Black 5 (97.9%) in UV/H 2 O 2 process was possible after 5 min of irradiation. The maximum color removal efficiency of Disperse Orange 25 after 10 min of irradiation, however, was only 9.2% and reached a maximum value of 41% after 120 min of irradiation. Pseudofirst order kinetics with respect to dyestuffs concentrations was found to fit all the experimental data. The results clearly showed that both dyes examined were toxic to D. magna and resulted in quite low LC 50 values.

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Photochemical degradation and mineralization of 4-chlorophenol

Cited by 50 publications

References 12 publications

Color, TOC and AOX removals from pulp mill effluent by advanced oxidation processes: A comparative study

Color, TOC and AOX removals from pulp mill effluent by advanced oxidation processes: A comparative study

Wastewater Treatment and Reclamation: A Review of Pulp and Paper Industry Practices and Opportunities

Study of photochemical and sonochemical processes efficiency for degradation of dyes in aqueous solution

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