Research of combined adsorption-coagulation process in treating petroleum refinery effluent.
The petroleum refinery industry generates a significant amount of wastewater that contains a high level of organic matter, which calls for effective and costly treatments. In this research, the effectiveness of the petroleum refinery effluent (PRE) treatment with physicochemical process of combined adsorption and coagulation was evaluated. The effects of initial pH, hydraulic condition , and combined sequence of treatment process, different treating reagent types and dosages on the chemical oxygen demand (COD) removal were investigated. Additionally, the elimination efficiency of pollutant wastewater was monitored by gas chromatography-mass spectrometry (GC-MS), and Fourier transformed infrared (FT-IR) spectrophotometer was adopted to describe the structure of the wastewater. Wooden activated carbon was chosen as adsorbent at the dosage of 10 g/L as a primary treatment, and 1500 mg/L polymeric magnesium ferric sulfate was used in coagulation. Results showed that adsorption and subsequent coagulation displayed the best performance when initial pH was 9 at shear rates (G) of G1 = 65 s-1and G2 = 20 s-1, which reached maximal removal rate of COD and total organic carbon GC-MS testing result revealed that adsorption was effective in phenols and iso-alkanes removal, whereas coagulation was good at removing esters and n-alkanes.
a Department of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu Sichuan , People's Republic of China.
Bing
B
Wang
a Department of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu Sichuan , People's Republic of China.
Yiyu
Y
Shui
a Department of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu Sichuan , People's Republic of China.
Hongyang
H
Ren
a Department of Chemistry and Chemical Engineering , Southwest Petroleum University , Chengdu Sichuan , People's Republic of China.
Min
M
He
D000327:Adsorption; D000077410:Aluminum Chloride; D000536:Aluminum Hydroxide / Q000737:chemistry; D001546:Bentonite / Q000737:chemistry; D057919:Biological Oxygen Demand Analysis; D002244:Carbon / Q000032:analysis / Q000737:chemistry; D007692:Diatomaceous Earth / Q000737:chemistry; D019652:Extraction and Processing Industry; D005290:Ferric Compounds / Q000737:chemistry; D005427:Flocculation; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D010578:Petroleum; D011108:Polymers / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000032:analysis / Q000737:chemistry; D014873:Water Pollutants / Q000032:analysis / Q000737:chemistry; D017641:Zeolites / Q000737:chemistry
D000077410:Aluminum Chloride; D000536:Aluminum Hydroxide; D001546:Bentonite; D002244:Carbon; D007692:Diatomaceous Earth; D005290:Ferric Compounds; D007220:Industrial Waste; D010578:Petroleum; D011108:Polymers; D062065:Wastewater; D014873:Water Pollutants; D017641:Zeolites; C539506:polyferric aluminum chloride; C016213:aluminum oxychloride; C024823:ferric sulfate; C033787:diatomite
Adsorption; GC-MS; coagulation; petroleum refinery effluent; removal mechanisms