Granular activated carbon is used to adsorb haloacetic acids from 1L of water. The initial mater concentration of haloacetic acids is 0.9 mg/L. The following data were obtained from an experiment: logg = log k + log C Mass GAC added (g) 0.2 0.5 2.0 5.0 10 20 C, mg/L of haloacetic acids 0.77 0.65 0.32 0.19 0.14 0.09 y = 1.34 (77) +0.018 = 1.158 logg 1=1.34y+0.018 는 logg The Freundlich isotherm analysis by plotting (on y axis) vs. 1/C (on x axis) gives a linear regression line of y = 1.34x + 0.018 with R² of 0.982. Note that q is adsorption density (mass adsorbate/mass adsorbent). What is the required GAC dosage in mg/L to lower the concentration of haloacetic acids to 0.05 mg/L? q = KC we want C=0.05 mg IL

0.1 g of a zeolite adsorbs 5.58 cm³ of N2 gas at a pressure of 5.56 mbar, and 22.22 cm3 of N2 gas at 13.95 mbar. If the surface area covered by one molecule of nitrogen is 16 Å?, and a mole of gas occupies 22.4 x 103 cm3, calculate the zeolite surface area in cm? g-1.

.A plot of a Langmuir adsorption isotherm (C/q vs 1/Q) for an adsorption process, gives a slope of 0.208 and intercept of 250. Calculate the adsorption capacity at equilibrium corresponding to monolayer coverage (0) A) 0.002 B) 4.8 C) 52 D) 1.2 x 10¹

Adsorption exp erim ent Reaction between FeS and HCl: FeS+2HC1-FeCl2+H2S Reaction on filtration sheet: H2S+Pb(CH:Co0)2-PbS+2CH:COOH STEP1 Put some FeS particles into a big tube. Add1 or 2 mL of 18% HCl solution onto FeS particles. Immediately close the tube with Pb(NO3)2 or Pb(CH:COO)2 immersed filtration sheet. 1. Why filtration sheet turned black in step1? STEP2 Put some FeS particles into a big tube. Fix the "glass funnel" (glass pipette) to the tube after adding HCl solution. Close the outlet of funnel with Pb(NO3)2 or Pb(CH COO)2 immersed filtration sheet. 1. Why filtration sheet didn't turn black in step2 ?

Qmax is maximum adsorption of acetic acid on activated carbon.If there is another organic compound that has high affinity to activated carbon in the same acetic acid solutions. How Qmax of acetic acid adsorption will change?Lower, Higher or same? EXPLAIN

1.2-MIB (Methylisoborneol) is one of the by-products of algae and is a representative trace pollutant that causes taste and smell of water. The isothermal adsorption equation of 2-MIB applied with activated carbon in water without organic matter was experimentally determined as follows.q = 1.48C^(0.65) Where q is ng 2-MIB / g activated carbon and C is the concentration of g / L 2-MIB (g / L).(n is 10 ^ -9) A. Calculate the amount of activated carbon (mg / L) required to reduce the concentration of 2-MIB to 5 g / L. It is assumed that the concentration of 2-MIB in water without organic matter is 50 g / L.B. The activated carbon adsorption column will be designed with a three-year operating period. If the density of activated carbon is 540 kg / m3 and the design flow rate per column effective cross-section is 10 m / hr, find the depth of activated carbon in the empty bed contact time (EBCT) and column. Here, it is assumed that there is no competitive adsorption that can interfere with…

Chemistry An aquifer contaminated with petroleum is found to have the following component concentrations at a particular site: benzene158 ppm toluene124 ppm ethylbenzene91 ppm xylene45 ppm n-heptadecane161 ppm pristane  84 ppm Provide an estimate for the age of the spill at this site using (a) BTEX ratio and (b) nC17:Pr ratio. Show your calculations and use units throughout. Give proper s.f. for the answer.

а. Identify THREE (3) isotherm shapes that are typically encountered in an adsorption process for a single adsorbate and illustrate the behavior through equilibrium relations.

(a) (i) Ksp value of Cul is 5.0 x10-12 mol2dm at 25 °C. Calculate the maximum number of moles of Cul that can be dissolved in 1 dm³ of water at 25 °C. (ii) Calculate the maximum number of moles of Cul that can be dissolved in 1 dm³ of 0.1 moldm³ of Nal solution at 25 °C.

ive. ive. ive. 6) is al number incur 10. If x is amount of adsorbate and m is amount of adsorbent, which of the following relations is not related to adsorption process? (a) x/m = f (p) at constant T (b) x/m = f(T) at constant p (c) p = f(T) at constant (x/m) (d) = pxT m TOKOLL Postion of (a) polar inner (b) polar surface (c) distribu (d) are pre