scholarly journals Removal of ammonium and phosphate in the simulated wastewater by using coal fly ash adsorbent

2021 ◽  
Vol 5 (1) ◽  
pp. 24-35
Author(s):  
Komala Affiyanti Affandi ◽  
Arseto Yekti Bagastyo
Keyword(s):  
Fly Ash ◽  
Removal Efficiency ◽  
Coal Fly Ash ◽  
Phosphate Removal ◽  
Ammonium Concentration ◽  
Optimal Conditions ◽  
Optimum Ph ◽  
Negative Effect ◽  
Simulated Wastewater ◽  
Different Sources

The main composition and availability of fly ash cause this waste which has potential as an adsorbent to remove ammonium and phosphate in water. Difference of main composition will cause different removal efficiency. The purposes from this research are to determine optimal condition for removing concentration ammonium and phosphate and to determine the source of fly ash which has great potential for ammonium and phosphate removal in solution. The optimal conditions were carried out by varying pH of solution and adsorbent dosages to remove ammonium and phosphate concentrations in different initial concentrations. Optimum pH of solution in this research is 8 with range of ammonium removal efficiency 8% to 14% and 16% to 75% for removing phosphate which has condition ammonium concentration higher than phosphate. Ammonium concentration lower than phosphate will have a negative effect on the removal. Adsorbent dosage of 4.5 g is able to produce optimal removal efficiency both ammonium and phosphate. From five different sources of fly ash, Punagaya fly ash has the great potential for removal ammonium and phosphate simultaneously which has an adsorption capacity of 7.17 mg/g and 19.50 mg/g for ammonium and phosphate respectively.

Potential of using synthesized nano-zeolite for ammonium and phosphate immobilization in dairy wastewater

2018 ◽  
Vol 85 (3) ◽  
pp. 375-378
Author(s):  
Fei Gao ◽  
Liwen Xiao ◽  
Hongzhou Zhang
Keyword(s):  
Fly Ash ◽  
Removal Efficiency ◽  
Coal Fly Ash ◽  
Exchange Capacity ◽  
Phosphate Removal ◽  
Dairy Wastewater ◽  
Phosphate Adsorption ◽  
Pollutants Removal ◽  
Sorption Index ◽  
Short Time

The studies described in the Research Communication aimed to describe the feasibility of using coal fly ash to synthesize nano-zeolite, and the ammonium and phosphate adsorption efficiencies of the nanomaterial in dairy wastewater. Chemical treatment of coal fly ash was conducted and changes observed. Samples treated with NaOH had an increased cation exchange capacity and P sorption index compared to the initial fly ash, due to particle modification from smooth surface to plate- and rod-shape crystals, referred to as nano-zeolite. Batch experiments were conducted by mixing coal fly ash and nano-zeolite with synthesized wastewater to study the effect of sorption time, pH values and dosage of nano-zeolite on ammonium and phosphate removal efficiency. The adsorption process reached equilibrium in a very short time (less than 60 min), which suggests a potential for fast immobilization of pollutants. The concentration of ammonium decreased from 118 to 35 mg/l (71% removal) while the concentration of phosphate decreased from 52 to 45 mg/l. The removal efficiency of ammonium was 36·6, 51·8 and 70·9% at pH 3, 7 and 10, respectively whilst that of phosphate increased dramatically with decreased slurry pH (92·1, 47·3 and 12·3% at pH 3, 7 and 10, respectively). Nano-zeolite could be a potential absorbent for fast immobilization of ammonium but not phosphate. Surface modification of nano-zeolite could be introduced in order to enhance the pollutants removal efficiency.

scholarly journals Removal of Phenol from Aqueous Solution by Adsorption on to Coal Fly Ash

1996 ◽  
Vol 13 (6) ◽  
pp. 527-536 ◽  
Author(s):  
L.J. Alemany ◽  
M.C. Jiménez ◽  
M.A. Larrubia ◽  
F. Delgado ◽  
J.M. Blasco
Keyword(s):  
Aqueous Solution ◽  
Fly Ash ◽  
Removal Efficiency ◽  
Ph Value ◽  
Coal Fly Ash ◽  
Solid Wastes ◽  
Power Stations ◽  
Different Temperatures ◽  
Coal Power ◽  
Coal Power Stations

The present work examines the possible use of fly ash, a byproduct of coal power stations, as a means of removing phenol from water, or equivalently, of restricting its movement in solid wastes or soil. Equilibrium experiments were performed to evaluate the removal efficiency of fly ash. The adsorption experiments were undertaken using fly ash treated at three different pH levels and with three different temperatures. The results indicate that although phenol can be removed from water, this depends markedly on the temperature and pH value of the treatment solution employed.

scholarly journals Vermicomposting of coal fly ash using epigeic and epi-endogeic earthworm species: nutrient dynamics and metal remediation

RSC Advances ◽  
2017 ◽  
Vol 7 (9) ◽  
pp. 4876-4890 ◽  
Author(s):  
Zeba Usmani ◽  
Vipin Kumar ◽  
Sujeet Kumar Mritunjay
Keyword(s):  
Fly Ash ◽  
Removal Efficiency ◽  
Nutrient Dynamics ◽  
Metal Removal ◽  
Coal Fly Ash ◽  
Earthworm Species ◽  
Comparative Aspect

Study highlights the metal removal efficiency and nutrient dynamics of three potent earthworm species from coal fly ash with a comparative aspect.

Phosphate Removal from Aqueous Solution Using Fly Ash Modified with Fe-Cu Bimetal Oxide

2013 ◽  
Vol 438-439 ◽  
pp. 42-45 ◽  
Author(s):  
Ke Xu ◽  
Xu Luo ◽  
Chun Guang Li ◽  
Jun Ling Niu
Keyword(s):  
Aqueous Solution ◽  
Fly Ash ◽  
Removal Efficiency ◽  
Langmuir Isotherm ◽  
Phosphate Removal ◽  
Experimental Results ◽  
Initial Concentration ◽  
Adsorbent Dosage ◽  
Ph Range ◽  
Modified Fly Ash

In this work the adsorption of phosphate using the Fe-Cu bimetal oxide modified fly ash was studied. The experimental results showed that phosphate could be effectively removed in the pH range between 4 and 10. The removal percentage of phosphate reached maximum at pH 6.0. The adsorption of phosphate by the modified fly ash was rapid, and the adsorption percentage of phosphate could reach 91.20% in 5 minutes. The removal efficiency of phosphate increased with the increase of adsorbent dosage and the decrease of the initial concentration. The adsorption of phosphate could be described well by Langmuir isotherm, the Langmuir constant Q0 was 26.03mg/g.

scholarly journals Enhancing the removal efficiency of methylene blue in water by fly ash via a modified adsorbent with alkaline thermal hydrolysis treatment

RSC Advances ◽  
2021 ◽  
Vol 11 (33) ◽  
pp. 20292-20302
Author(s):  
Nga Thi Dinh ◽  
Linh Ngoc Hoang Vo ◽  
Ngoc Thi Thanh Tran ◽  
Tuan Dinh Phan ◽  
Duc Ba Nguyen
Keyword(s):  
Methylene Blue ◽  
Fly Ash ◽  
Removal Efficiency ◽  
High Efficiency ◽  
Coal Fly Ash ◽  
Thermal Hydrolysis ◽  
Waste Coal

High efficiency of methylene blue adsorbent from waste coal fly ash by treatment with alkaline thermal hydrolysis.

Dioctyl Phthalate Esters Wastewater Treatment by Fenton Reagent / Fly Ash Combined Process

2013 ◽  
Vol 777 ◽  
pp. 122-126
Author(s):  
Li Ping Wang ◽  
Xin Ying Li ◽  
Xiang Mei Li
Keyword(s):  
Fly Ash ◽  
Removal Efficiency ◽  
Phthalate Esters ◽  
Dioctyl Phthalate ◽  
Cod Removal ◽  
Fenton Reagent ◽  
Combined Process ◽  
Cod Removal Efficiency ◽  
Simulated Wastewater ◽  
Better Than

Used Fenton reagent and fly ash combined process to treat dioctyl phthalate (DOP) simulated wastewater. Influences of pH, concentration of H2O2, Fe2+ concentration, fly ash dosage and other factors effect of COD were studied. The results showed that, under the synergies of the fly ash, Fenton reagent on the COD removal efficiency was better than Fenton reagent used alone. When the pH was 5, H2O2 concentration was 1.2 g/L, Fe2+ concentration was 1.0g/L, fly ash dosage was 4 g, and COD removal efficiency reached 83.21%.

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