Synergies between electrochemical oxidation and activated carbon adsorption in three-dimensional boron-doped diamond anode system

2011 ◽  
Vol 56 (3) ◽  
pp. 1270-1274 ◽  
Author(s):  
Xiuping Zhu ◽  
Jinren Ni ◽  
Xuan Xing ◽  
Hongna Li ◽  
Yi Jiang
Keyword(s):  
Activated Carbon ◽  
Electrochemical Oxidation ◽  
Three Dimensional ◽  
Activated Carbon Adsorption ◽  
Boron Doped Diamond ◽  
Carbon Adsorption ◽  
Boron Doped

scholarly journals Eliminace mikropolutantů z vod kombinací oxidačních a sorpčních procesů v laboratorním měřítku

Entecho ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 15-20
Author(s):  
Tamara Pacholská ◽  
Ivan Karpíšek ◽  
Jana Zuzáková ◽  
Vojtěch Kužel ◽  
Stanislav Gajdoš ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Wastewater Treatment Plants ◽  
Granular Activated Carbon ◽  
Pilot Scale ◽  
Post Treatment ◽  
Operational Parameters ◽  
Activated Carbon Adsorption ◽  
Boron Doped Diamond ◽  
Carbon Adsorption ◽  
Wwtp Effluent

Mikropolutanty v životním prostředí působí negativně na vodní ekosystémy a též představují potenciální riziko pro lidské zdraví. Zásadním zdrojem vnosu mikropolutantů do životního prostředí jsou městské ČOV, jejichž konvenční mechanicko-biologická technologie není na odstraňování mikropolutantů navržena. V této práci jsme testovali účinnost odstranění mikropolutantů řadou oxidačních (např. ozonizace, UV/H2O2, Fentonova reakce, borem dopovaná diamantová elektroda) a sorpčních (např. granulované aktivní uhlí GAU, zeolity) procesů. Účinnost odstranění vybraných léčiv (např. erythromycin, sulfamethoxazol, ibuprofen atd.) a metabolitů pesticidů (např. acetochlor ESA, metazachlor ESA) jsme testovali v jednorázových vsádkových testech. S přihlédnutím k ekonomickým i provozním parametrům byla pro následné testování v reálných podmínkách (poloprovozní měřítko) zvolena kombinace oxidace UV/H2O2 a sorpce na GAU. Mikropolutanty v modelové vodě byly úspěšně odstraněny z 91% (suma léčiv) a cca 100% (suma metabolitů pesticidů) při použití optimální dávky H2O2 5 mg/l a intenzity UV záření 4 kJ/m2 s následnou sorpcí na GAU. Tyto velmi slibné výsledky v současné době ověřujeme v pilotní jednotce pro dočištění reálného odtoku z městské ČOV. Abstract (EN) Micropollutants cause harm to aquatic ecosystems and can also negatively affect human health. Major sources of micropollutants input to aquatic environments are wastewater treatment plants due to their insufficient removal during the conventional mechanical-biological process. This study aimed to evaluate potential WWTP effluent post-treatment processes for the removal of selected pharmaceuticals and pesticides using oxidation (e.g., ozonization, UV/H2O2, Fenton, boron-doped diamond electrode) and sorption (e.g. granular activated carbon, zeolite) processes and their combinations. The removal of selected pharmaceuticals (e.g. erythromycin, sulphamethoxazole, ibuprofen) and pesticides (e.g. acetochlor ESA, metazachlor ESA) was tested in batch assays. The combination of UV/H2O2 and activated carbon adsorption was the most favorable in terms of removal efficiency and economic and operational parameters. This combination achieved the removal efficiencies of pharmaceuticals and pesticides of 91 and 100%, respectively, using an optimum H2O2 dose of 5 mg/L and UV intensity of 4 kJ/m2 followed by granular activated carbon adsorption. These promising results are currently adopted in a pilot-scale study for the post-treatment of a real WWTP effluent.

Complete treatment of olive pomace leachate by coagulation, activated-carbon adsorption and electrochemical oxidation

2008 ◽  
Vol 42 (12) ◽  
pp. 2883-2888 ◽  
Author(s):  
Michael Mavros ◽  
Nikolaos P. Xekoukoulotakis ◽  
Dionissios Mantzavinos ◽  
Evan Diamadopoulos
Keyword(s):  
Activated Carbon ◽  
Electrochemical Oxidation ◽  
Olive Pomace ◽  
Activated Carbon Adsorption ◽  
Carbon Adsorption ◽  
Complete Treatment

Treatment of High-Strength, Complex and Toxic Chemical Wastewater: End-of Pipe “Best Available Technology” vs. an In-Plant Control Program

1994 ◽  
Vol 29 (8) ◽  
pp. 221-233
Author(s):  
Shimshon Belkin ◽  
Asher Brenner ◽  
Alon Lebel ◽  
Aharon Abeliovich
Keyword(s):  
Activated Carbon ◽  
Control Program ◽  
High Strength ◽  
Activated Carbon Adsorption ◽  
Acceptable Solution ◽  
Conventional Activated Sludge ◽  
Carbon Adsorption ◽  
Individual Source ◽  
Best Available Technology ◽  
Available Technology

A case study is presented, in which two approaches to the treatment of complex chemical wastewater are experimentally compared: an end-of-pipe “best available technology” option and an in-plant source segregation program. Both options proved to be feasible. Application of the powdered activated carbon treatment (PACT™) process for the combined end-of-pipe stream yielded up to 93% reduction of dissolved organic carbon, with complete toxicity elimination. In order to examine the potential for applying a conventional activated sludge process, a simplified laboratory screening procedure was devised, aimed at establishing baseline data of removability potential, defined either by biodegradation, activated carbon adsorption or volatilization. Using this procedure, the major source of the non-biodegradable fraction in the combined park's wastewater was traced to a single factory, from which twelve individual source streams were screened. The results allowed the division of the tested sources into three groups: degradable, volatile, and problematic. A modified wastewater segregation and treatment program was accordingly proposed, which should allow an efficient and environmentally acceptable solution. This program is presently at its final testing stages, at the conclusion of which a full comparison between the two approaches will be carried out.

The effect of surface metal oxides on activated carbon adsorption of phenolics

1998 ◽  
Vol 32 (6) ◽  
pp. 1841-1851 ◽  
Author(s):  
Lois J. Uranowski ◽  
Charles H. Tessmer ◽  
Radisav D. Vidic
Keyword(s):  
Activated Carbon ◽  
Metal Oxides ◽  
Activated Carbon Adsorption ◽  
Carbon Adsorption ◽  
Surface Metal ◽  
Effect Of Surface
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