Treatment of an Alkaloid Industry Wastewater by Biological Oxidation and/or Chemical Oxidation

Aytimur, Gülin; Atalay, Süheyda

doi:10.1080/00908310490445607

Cited by 14 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To test the effect of biological pretreatment, wastewater that was aerobically pretreated by the activated sludge method was used ( Aytimur, 2002 ; Aytimur and Atalay, 2004 ). Thus, the wastewater was first subjected to an activated sludge method, by which the COD was decreased from 27 200 to 15 500 mg/L, and then the Fenton's reagent was applied to this effluent.…”

Section: Resultsmentioning

confidence: 99%

“…The COD of the original wastewater was 27 200 mg/L. By the activated sludge method, the COD of the wastewater could be reduced to 15 500 mg/L ( Aytimur, 2002 ; Aytimur and Atalay, 2004 ). Thus, a COD removal of 43% was obtained by the activated sludge process only.…”

Section: Resultsmentioning

confidence: 99%

“…The plant produces raw morphine and its derivatives from undrifted poppy capsules, which are cultivated in the Afyon region. The factory produces approximately 180 000 m 3 of wastewater per year ( Aytimur, 2002 ; Aytimur and Atalay, 2004 ).…”

Section: Methodsmentioning

confidence: 99%

“…In literature, advanced oxidation often is recommended before biological treatment, in an attempt to increase the fraction of organic matter that may be degraded biologically. However, in previous studies, the authors studied the various combinations of chemical and biological processes ( Aytimur, 2002 ; Aytimur and Atalay, 2004 ). The results of the study showed that pretreatment of biological pretreatment may lead to more promising results on the percent of COD removal of this wastewater.…”

Section: Methodsmentioning

confidence: 99%

“…However, there are technical alternative treatment methods that have been tested. Aytimur (2002) and Aytimur and Atalay (2004) tested the efficiency of biological treatment in their previous studies and found that this process did not lead to promising results. Sevimli et al (2000) studied the treatment of alkaloid industry wastewater in an upflow anaerobic sludge blanket reactor and found that 70% of the incoming chemical oxygen demand (COD) can be removed anaerobically.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Low‐Pressure Catalytic Wet‐Air Oxidation of a High‐Strength Industrial Wastewater Using Fenton's Reagent

Bicaksiz¹,

Aytimur²,

Atalay³

2008

Water Environment Research

View full text Add to dashboard Cite

Wastewater from the Afyon Alkaloids Factory (Afyon, Turkey) was subjected to low-pressure catalytic wet-air oxidation (CWAO) using Fenton's reagent, and the optimal reaction conditions were investigated. The CWAO using Fenton's reagent was applied to the factory effluent, diluted factory effluent, and aerobically pretreated wastewater. To find the optimum quantities of reagents, ferrous iron (Fe 12 )-to-substrate ratios of 1:10, 1:25, and 1:50 and hydrogen peroxide (H 2 O 2 )-to-Fe 12 ratios of 1, 5, and 10 were investigated, and the treatment was carried out at different temperatures. High chemical oxygen demand (COD) removals were obtained at 508C, with the Fe 12 -to-substrate ratio range between 1:10 and 1:25. The change in H 2 O 2 -to-Fe 12 ratios did not cause any considerable effect. Also, the percentages of COD removals were nearly the same, so the ratio H 2 O 2 :Fe 12 :1 is recommended. Aerobic pretreatment seems to be effective. On the other hand, no enhancement was observed in the case of the diluted wastewater. Water Environ. Res., 80, 540 (2008).

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%