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Purified sludge carbon (PSC) with removal of inorganic ‘impurities’ (Si, Al, etc.) is prepared from sewage sludge. Morphological structure, textural properties, surface elements and functional groups of sludge carbon (SC) and PSC are compared. S BET and pore volume of PSC are about three times higher than those of SC. PSC with large fluffy cavities remains some memory of SC parent structure...
By adding zinc chloride to the surplus sludge and using the traditional method for making activated carbon, we prepared the activated carbon adsorption deodorant and studied the function, benefit and security properties of the adsorption deodorant. The results show that the deodorant under the activation temperature of 600°C has more mesopore, its iodine adsorption value is higher than 300mg/g. Wastewater...
Kaolin has been modified with hydrochloric acid and calcination, and given a study on the adsorption of phosphate by modified Kaolin. The Results show that phosphate adsorption capacities of modified Kaolin were raised enormously. When P concentration is 20 mg/L,consumption of modified Kaolin is 2%(weight ratio), Amounts of adsorption of Kaolin modified with hydrochloric acid and modified with heating...
Removal of glyphosate from aqueous solutions by using gel basic anion exchange resin N201 was investigated in the paper. The effects of solution initial concentration, temperature, and contact time were studied. Adsorption isotherms were determined using Langmuir and Freundich equations. The results clearly showed that the adsorption of glyphosate onto N201 followed Freundich model and the adsorption...
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...
Cr(VI) has posed great threat on environmental safety and human health, thus the remediation of Cr(VI) pollution is of considerable importance. The adsorption of Cr(VI) from aquatic solution using activated carbon was studied in this paper. The Cr(VI) sorption was relative to pH, contact time, initial content of solution, adsorbent dose and temperature. The maximum removal efficiencies of Cr(VI) were...
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...
Tetracycline is a series of emerging pharmaceutical and personal care products (PPCPs), which has been caught increasing concern in recent years. As a new type of carbon materials, activated carbon fiber (ACF) demonstrates its excellent adsorption performance especially in organic pollutants removal. ACF was used for tetracycline removal by adsorption and the effect of ACF dosage, contact time, salinity,...
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...
Over the past several decades, trace heavy metal ion pollution, such as Cd(II), Cu(II), Pd(IV), etc., have attracted much attention because of their virulent and hard degradation properties. Recently, great efforts have been devoted to establish new methods and technologies to removal toxic metals. Among them, activated carbon adsorption, especially the modified activated carbon technology has been...
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...
The nitric acid industry in the China is a major industrial source of NOx, an important contributor to the air pollution. This project aims at developing a technique for the removal of NOx by biological method. The use biological packing tower to remove NOx tail gas after alkali adsorption from nitric acid production was investigated by a field experiment. The biological packing tower, using slag...
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,...
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