... 86% of COD and 63% of NH4+-N Kurniawan and Lo [11] reported that granular activatedcarbonadsorption alone could remove about 60% of COD from leachate Studies of leachate by activatedcarbonadsorption ... using activation temperature of 800 °C, activation time of 2.1 h and flow rate of 68.68 ml/s The optimum DP activatedcarbon showed COD and colour removalof 42.47 and 39.86%, respectively It ... coefficients and xi, xj are the coded values of the activatedcarbon preparation variables 2.6 Characterization of DPAC The surface area, pore volume and average pore diameter of the DP activated carbon...
... modify the surface behavior andadsorption characteristics ofactivated carbons and make them useful for the removalofhazardousgasesandvapors by chemisorption and catalytic decomposition ... Environment: RemovalofHazardousGasesandVapors 443 8.1 Removalof Volatile Organic Compounds at Low Concentrations .443 8.2 Removalof Oxides of Nitrogen from Flue Gases 445 8.3 Removal ... and industrial flue gases Interest in activatedcarbonadsorptionofgasesandvapors received a big boost during and after the first World War, while an increasing attention to the activated carbon...
... experiments for equilibrium and kinetic studies were carried out in a series of 1000mL flasks Each of them contained 5g of adsorbents (adsorbent dose) and - 45 - Journal of Water andEnvironment Technology, ... developing and poor countries This work aims to study the adsorption column for removalof arsenic from synthetic groundwater using sequential combination of LA and AC-Fe as adsorbents The effect of ... concentration of 0.5mg/L with a flow rate of 7.75mL/min Activatedcarbon (AC) is always considered as a typical adsorbent, but AC has low arsenic removal capacity The percentage removalof As[III]...
... to clarify the effect of DOM and biofilm on the adsorption capacity of PAC in the aeration tank of PACT process Materials and methods 2.1 Operation of powdered activatedcarbon treatment (PACT) ... effect of biofilm on the adsorption capacity of PAC, PAC covered with biofilm was made and its adsorption capacity was compared to the adsorption capacity of new PAC repeated times For biofilm ... tank, and PAC in the bacterial cultivations Summary and conclusions The objective of this study is to clarify the effect of DOM and biofilm on the adsorption capacity of PAC in the aeration tank of...
... 3.5 Adsorption kinetic and isotherm models 19 Chapter Adsorptionremovalof As(V), As(III) and Pb(II) by HCO-AC 21 4.1 Introduction 21 4.2 Results and discussion of As(V) and ... Summary of isotherm fitting for adsorptionof As(V) and As(III) on HCO-AC at 25 °C Adsorption dosage 0.1g/L, initial pH 5.0 ±0.1 Table 4.3 Comparison of As(V) and As(III) adsorption capacity of HCO-AC ... (L/mg) The adsorption capacity of the adsorbent is therefore given by the sum of q1 and q2 (mg/g) 20 Chapter Adsorptionremovalof As(V), As(III) and Pb(II) by HCO-AC 4.1 Introduction Arsenic and lead...
... copolymer composed of 81% of 3HB and 19% of 3-hydroxyvalerate (3HV) (Sigma-Aldrich Japan K.K., Japan) was used as the standard of 3HV unit in PHA These standards were also digested and analyzed by ... Journal of Water andEnvironment Technology, Vol 6, No.2, 2008 Technology, China The concentration of PHA in these reactors was determined, and the fractions ofcarbon stored as PHA ... symbols, Q and r, indicate the flow rate and the recycle ratio ofactivated sludge And, subscripts, In, I, II, R, and Eff, indicate the influents, reaction tank I, reaction tank II, recycle, and effluents,...
... KF(L/g) and n are the Freundlich constants which represent the significance ofadsorption capacity and intensity of adsorption, respectively KF and n are calculated from the intercept and slope of ... 144 h, at 4.62 mg/L of initial arsenic concentration and 2.5 - 46 - Journal of Water andEnvironment Technology, Vol 7, No 2, 2009 g/L of adsorbent dose, the percentage removalof total arsenic ... Journal of Water andEnvironment Technology, Vol 7, No 2, 2009 or difficult to apply in poor and rural areas One of the promising and viable methods for arsenic removal is the adsorption technique...
... Bed Adsorption for the Removalof Pollutants from Water Environmental Pollution 1990, 66, 33-53 [2] Li, F., Yuasa, A., Ebie, K., and Azuma, Y Microcolumn Test and Model Analysis ofActivatedCarbon ... density ofactivated carbons and to determine pHzpc Results and discussion 4.1 Effect of initial dye concentration To investigate the effect of initial dye concentration on the performance of the ... Berner, Z A and Kramar, U Adsorptionof arsenic species from water using activated siderite-hematite column filters Journal ofHazardous Materials 2007, 151, 628-635 [14] McKay, G Adsorptionof Dyestuffs...
... Adsorption- desorption isotherms of N2 for AC, modified AC and Cu-AC Journal of Physical Science, Vol 21(2), 29–40, 2010 3.2 35 Removalof RO16 Dye Colour removal (%) Colour removal (%) The removal ... Measurement of interlayer spacing and crystal sizes in turbostatic carbons Carbon, 1(1), 3–9 Noh, J S & Schwarz, J A (1990) Effect of HNO3 treatment on the surface acidity ofactivated carbons Carbon, ... area The removal is attributed to adsorptionof the dye onto the copper oxides and AC Therefore, Cu-AC4 was chosen as the catalyst for removalof RO16 in further experiments 36 Colour removal...
... = activated carbon, ZC = activated zeolite, MAC = 2.5% (w/w) Se /activated carbon, MAC2 = 5% (w/w) Se /activated carbonand MZC = 5% (w/w) Se /activated zeolite Preparation of Selenium-Doped Activated ... The SBET of MAC material was expected to increase if the quantity of Se decrease For comparison purposes, 5% (w/w) Se /activated carbon (MAC2), SBET of 583.03 m2/g and total pore volume of 368.45 ... Preparation of Selenium-Doped ActivatedCarbon 12 process that result in the generation of off-flavours that is often associated with the reduction in nutritional value.4 In fact, the quality of the...
... prepare and study the effect of different pyrolysis temperatures on the development of the porosity ofactivatedcarbon derived from oil palm shells activated with ZnCl2 The activatedcarbon was ... controller Textural Characteristics ofActivated Carbons 2.4 Characterization of the Activated Carbons 2.4.1 96 Nitrogen adsorption studies The determination of the adsorption- desorption nitrogen ... (SEM) and Energy Dispersive X-ray analysis (EDX) were used to observe the structural morphology and composition ofactivatedcarbon RESULTS AND DISCUSSION 3.1 BET Surface Area ofActivated Carbon...
... the hydrophobic activatedcarbon surface These two factors, as well as the high cost of regeneration ofactivated carbon, limited the application ofactivatedcarbon to the removalof humic substances ... to the composition of the raw material and the production process, between 5% and 20% by weight ofactivatedcarbon consists of elements other than carbon, primarily metals and surface bound oxygen ... distribution ofactivatedcarbon is of great importance Humic substances with larger molecular weight are excluded from the smaller pores ofactivated carbon, and thus have a lower volume available for adsorption...
... coverage of on dye and outer of adsorbent 20 40 60 80 loo Agdatlon Fig of equilibrium The equilibrium from effect on adsorption dye and shows 120 lime 140 160 180 200 (min) Effect of agitation time and ... from no change the data were for of the effect dye after Langmuir taken from and batch of agitation dose in absorbance removaland adsorbent desorption adsorptionof 10 mg/L greater Several dye ... Fe(III)/Cr(III) Namasivayam of dairy (11) and coworkers from employed solutions of using containing congo fly ash and coal(g) et al (12) have of nickel of this a textile such of chlorophenol study...
... Sampling point of this study Fig Development areas of bankfiltrate - 134 - Journal of Water andEnvironment Technology, Vol.1, No.2, 2003 Nanofiltration to hardness removal Nanofiltration experiment ... NTR729-HF(NITTO DENCO) and UTC-20(TORAY) was used The characteristics of membrane were shown in Table Table Characteristics of nanofiltration membrane Percent removalof NaCl Percent removalof MgSO4 at ... day at 20℃ to have adsorption equilibrium It was confirmed that equilibrium was achieved at day RESULTS AND DISCUSSION Nanofiltration of hardness removal Three types of nanofiltration membrane...
... [1] Department of Water Environment, Ministry of the Environment, Japan July 2002 Outline of Administration of Water Environment P20 (In Japanese) [2] M Soto-Jiménez, F Páez-Osuna and A C Ruiz-Fernández ... and average is 2.3 m Water depth changes around 0.4 m (up and down) by various reasons This plant was floated and fixed at the center of the raft Lake water was - 234 - Journal of Water andEnvironment ... evidences of the anthropogenic alteration of trace metal composition of the sediments of Chiricahueto marsh (SE Gulf of California), Environmental Pollution, 125(3), 2003, 423-432 [3] S S Lau and L...
... charcoal, and is adsorption when drainage water contacts the surface of charcoal because of the structure of this equipment Relation ofremoval ability among substances As the removal ability of a ... the - 13 - Journal of Water andEnvironment Technology, Vol 7, No 1, 2009 standard deviation (SD) in TP was larger than those of TOC and TN (Table 3) and the reduction rate of TP was distributed ... - Variations of reduction rate for (a) TOC, TN and TP, (b) Cr, Fe, Pb, and Zn, and diurnal variations of contact times during field test Table - Mean and standard deviation (SD) of the concentration...
... dissociation of added sulfuric acid, reduces the chance ofadsorptionof organic materials into catalyst surface and therefore the rate of oxidation will be reduced Figure Effect of pH on degradiation of ... Chander S Single component and multi-component adsorptionof phenols by activated carbons, Colloids Surf A: Physicochem Eng Aspects 2001,177, 183–196 [9] Dursun G., Dursun A.Y., Adsorptionof ... treatment using nanoparticles of TiO2 and UV light The main feature of this work is the use of inexpensive and recoverable catalyst This sort of processes for degradation of organic compounds may...
... of mTOR andof the insulindependent activation of p70S6K in skeletal muscle [29–31] We compared the time-course of the effect of AICAr with that of rapamycin on ACC and p70S6K, both of which ... limiting Therefore, the effect of different activators of AMPK and the effect of inhibitors of protein phosphatases on the amino-acid-induced activation of ACC and p70S6K were examined in freshly ... of mTOR, the activation of which is required for the activation of both ACC and p70S6K, and one downstream of mTOR which inactivates p70S6K AICAr abrogates the amino-acid-induced activation of...
... presence of phosphate Although phosphate did not change the shape and slope ofadsorption curves, the adsorption edge shifted distinctly to lower pH, indicating the substantial enhancement of Cd adsorption ... only 1.5% and 23% were adsorbed at the same pHs in the absence of phosphate The enhanced Cd adsorption could be attributed to the reduction of the pHzpc (zero point of charge) of goethite and surface ... example, 23% of Cd was adsorbed at 15 min, while 32%, 37%, and 55% of Cd was adsorbed at reaction times of 24 h, days, and Fig Percent Cd adsorption by the phosphate-treated goethite () and untreated...