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Chemical oxygen demand (COD) have been the crucially problematic parameters in refinery wastewater treatment. This study was conducted to investigate the COD removal effectiveness in refinery wastewater with the activated pretreatment petroleum coke (APPC) prepared by combination of chemical activation with KOH solution and physical activation with calcination at lower temperatures. Adsorption experiments...
The paper is aim to discuss the dye wastewater treatment by sewage sludge-based adsorbent. The adsorbent derived from sewage sludge , which produced through phosphoric acid-microwave method, and commercial activated carbon (ACC) were tested in the process of the Reactive Light Yellow dye wastewater treatment. The effects of pH value, contact time and the adsorbents' amount on the adsorption efficiency...
Treatment of the wastewater containing amantadine hydrochloride with adsorption in order to achieve lower the effluent COD of amantadine hydrochloride. A comparison of the adsorbents (activated carbon, diatomite, zeolite, slag and steel slag, etc.) on amantadine hydrochloride water the maximum saturation capacity and adsorption isotherms, and the factor of economic, to finalize a kind of the adsorbents...
The effectiveness of coagulation/flocculation/ sedimentation (CFS), carbon adsorption, and CFS+carbon adsorption for advanced treatment of a biologically treated coking plant effluent was studied. The CFS treatment was cost effective for producing an effluent reusable as cooling water (CODCr<;100 mg/L). Carbon adsorption accomplished the same recycling treatment at a higher cost. Both carbon type...
The sludge carbon made from sewage sludge with ZnCl2 are used for gatifloxacin adsorption. Characterizing sludge carbon and researching mechanism of gatifloxacin adsorption on different adsorbents. The results showed: sludge carbon have large surface area and mid-hole structure. The adsorption keep to second kinetics model, that means chemical adsorption is the main progress. The research proves sludge...
Perfluorooctane sulfonate (PFOS) has increasingly attracted global concerns in recent years and has also been proposed as the candidates of persistent organic pollutants due to their world-wide distribution, environmental persistence and bioaccumulation potential. The adsorption mechanism of PFOS from aqueous solutions onto granular activated carbon (GAC) was investigated. The adsorption reaction...
Adsorption test for phenol-containing wastewater from a coking plant was carried out using Specially-made activated carbon. The reaction mechanism and influencing factors, such as the dosage of Specially-made activated carbon, pH, temperature and time on decomposition of phenol for the treatment of phenol-containing wastewater by Specially-made activated carbon were mainly studied. The proper conditions...
Surfactants have been widely used for extracting hydrophobic organic compounds from soils into aqueous phase. Non-ionic surfactants such as Triton X-100 and anionic surfactants such as SDS (sodium dodecyl sulphate) have been of particular interest because of their high solubilizing ability and low toxicity. However, the resulting wastewater that contains both surfactant and organic contaminants should...
The effect of temperature on adsorption of reactive blue 19 (RB19) by cross-linked chitosan/oil palm ash composite beads was investigated. Temperature studied from range 30 to 50??C. It was observed that the uptake of this dye increased with increasing in temperature. Results revealed that sorptions of reactive blue 19 (RB19) on cross-linked chitosan/oil palm ash composite beads was endotermic in...
Textile effluents are major industrial polluters. The present paper aims to investigate and develop low cost adsorption methods for color removal wastewater using waste materials raw (RP) and activated carbon (ACP) from plane tree yellow leaves as adsorbent. The method was applied for the removal of direct red 81 while the influence of various factors such as adsorbate concentration and pH were studied...
The walnut shell, an agricultural waste, has been activated and used as an adsorbent for the adsorption of Direct and Reactive dyes from aqueous solution. Using a batch adsorption technique with respect to initial concentration and temperature the effects of various experimental parameters have been investigated. Equilibrium isotherms were analyzed by Langmuir, Freundlich, Temkin and Dubinin-Radushkevich...
Fenton oxidation-activated carbon adsorption combination process was used for the treatment of ammunition disposal wastewater in an ammunition experimental station in Lanzhou Corps District. The pilot plant tests indicated that the decomposition efficiency of ammunition disposal wastewater was affected markedly by the impact factors of Fenton oxidation. The optimal parameters of Fenton oxidation reaction,...
A new adsorbent can be obtained after adsorption of Cu2+ by activated carbon and can be used for waste water containing cyanide treatment. The performance of treatment and the factor influence were studied in this paper. It is shown that the removal efficiency of cyanide in wastewater is about 94% when pH value of reaction liquid is 8-11, the adsorption time is 2-3 h. simultaneously, this method has...
The feasibility of powdered activated carbon (PAC) as an adsorbent to eliminate the perfluorooctanoic acid (PFOA) in the water for reuse has been studied. PAC exhibits a high affinity to adsorb PFOA on its surface. More than 95% of PFOA can be adsorbed onto PAC surface at the first hour. For common reuse water, the most optical PAC concentration was 0.125 g/L. As illustrated by IR spectra, PAC is...
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