Combination of ozonation and photocatalysis for pharmaceutical wastewater treatment

Ratnawati, Enjarlis, Slamet

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

The chemical oxygen demand (COD) and phenol removal from pharmaceutical wastewater were investigated using configuration of two circulation batch reactors in a series with ozonation and photocatalytic processes. The ozonation is conducted with O3/granulated activated carbon (O3/GAC), whereas photocatalysis with TiO2 that immobilized on pumice stone (PS-TiO2). The effect of circulation flow rate (10; 12; 15 L/min) and the amount PS-TiO2 (200 g, 250 g, 300 g) were examined. Wastewater of 20 L was circulated pass through the pipe that injected with O3 by the ozone generator, and subsequently flow through two GAC columns, and finally, go through photoreactor that contains photocatalyst PS-TiO2 which equipped with mercury lamp as a photon source. At a time interval, COD and phenol concentration were measured to assess the performance of the process. FESEM imaging confirmed that TiO2 was successfully impregnated on PS, as corroborated by EDX spectra. Meanwhile, degradation process indicated that the combined ozonation and photocatalytic processes (O3/GAC-TiO2) is more efficient compared to the ozonation and photocatalysis alone. For combination process with the circulation flow rate of 10 L/min and 300 g of PS-TiO2,the influent COD of around 1000 ppm are effectively degraded to a final effluent COD of 290 ppm (71% removal) and initial phenol concentration of 4.75 ppm down to 0 ppm for 4 h which this condition fulfill the discharge standards quality. Therefore, this portable prototype reactor is effective that can be used in the pharmaceutical wastewater treatment. For the future, this process condition will be developed for orientation on the industrial applications (portable equipment) since pharmaceutical industries produce wastewater relatively in the small amount.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Symposium on Applied Chemistry 2017
EditorsSilvester Tursiloadi, Nino Rinaldi
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735415942
DOIs
Publication statusPublished - 27 Nov 2017
Event3rd International Symposium on Applied Chemistry 2017, ISAC 2017 - Jakarta, Indonesia
Duration: 23 Oct 201724 Oct 2017

Publication series

NameAIP Conference Proceedings
Volume1904
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Symposium on Applied Chemistry 2017, ISAC 2017
CountryIndonesia
CityJakarta
Period23/10/1724/10/17

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