Comparative study of the adsorption of micropollutant contained in aqueous phase using coal fly ash and activated coal fly ash: Kinetic and isotherm studies

2019 ◽  
Vol 23 ◽  
pp. 100265 ◽  
Author(s):  
Marouane El Alouani ◽  
Saliha Alehyen ◽  
Mohammed El Achouri ◽  
M'hamed Taibi
Keyword(s):  
Fly Ash ◽  
Comparative Study ◽  
Aqueous Phase ◽  
Coal Fly Ash ◽  
Activated Coal

Adsorption of Pb(II) from Aqueous Solutions on Dithizone-Immobilized Coal Fly Ash

2020 ◽  
Vol 840 ◽  
pp. 57-63
Author(s):  
Dina Fitriana ◽  
Mudasir Mudasir ◽  
Dwi Siswanta
Keyword(s):  
Fly Ash ◽  
Adsorption Isotherm ◽  
Contact Time ◽  
Coal Fly Ash ◽  
Order Kinetic ◽  
Adsorbent Dosage ◽  
Activated Coal ◽  
Concentration Of Ions ◽  
Order Kinetic Model ◽  
Pseudo Second Order

Adsorption of Pb(II) ions onto selective adsorbent of dithizone-immobilized coal fly ash (DCFA) from Holcim, Cilacap, Indonesia has been investigated in batch experiments. Prepared coal fly ash (CFA) modified by immobilization of dithizone previously were characterized by FT-IR and XRD. Several parameters influencing the adsorption of Pb(II) ions such as effect of pH, adsorbent dosage, contact time and initial concentration of ions on the efficiency of the adsorption were studied. The optimum condition of Pb(II) adsorption was found at pH 5, adsorbent dosage 0.1 g, contact time 60 min and initial Pb(II) ions concentration of 60 mg L–1. The adsorption kinetics of Pb(II) ions on DCFA was found to follow a pseudo-second-order kinetic model. The adsorption isotherm data were fitted to the Langmuir model. Kinetics and adsorption isotherm studies suggest that the capacity and affinity of the DCFA in adsorbing Pb(II) ions is significantly improved compared to those of non-immobilized activated coal fly ash (ACFA).

Removal of sulfonated humic acid from aqueous phase by modified coal fly ash waste: Equilibrium and kinetic adsorption studies

Fuel ◽  
2016 ◽  
Vol 165 ◽  
pp. 264-271 ◽  
Author(s):  
Chunjiang An ◽  
Siqi Yang ◽  
Guohe Huang ◽  
Shan Zhao ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Fly Ash ◽  
Humic Acid ◽  
Aqueous Phase ◽  
Coal Fly Ash ◽  
Kinetic Adsorption ◽  
Adsorption Studies

Possibilities of Using Alternative Materials as a Substitute Binder or Filler into Composites

2015 ◽  
Vol 1105 ◽  
pp. 31-35 ◽  
Author(s):  
Nadežda Števulová ◽  
Ivana Schwarzova ◽  
Viola Hospodarova ◽  
Jozef Junak ◽  
Marcela Ondova ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Coal Fly Ash ◽  
Steel Slag ◽  
Recycled Concrete ◽  
Partial Replacement ◽  
Alternative Materials ◽  
Activated Coal ◽  
Hemp Fibres ◽  
Lightweight Composites

This article reports on the possibilities of using selected alternative materials like hemp fibres, MgO-cement, recycled concrete, fly ash and steel slag as binder or filler replacement in composite materials in civil engineering production. These binder or filler substitutes were mixed into composites and their compressive strength was tested. The paper is divided into four parts providing the results of experiments. In first part strength parameters of lightweight composites based on natural fibres (hemp hurds) and alternative binder (MgO-cement) are presented. Compressive strength values of concrete samples with partial replacement of cement with mechanochemically activated coal fly ash are given. The third and forth part is aimed to utilization of recycled concrete and steel slag as a natural aggregate replacement in concrete mixture for purpose of structural concrete and surface roads.

Preparation of sintered foam materials by alkali-activated coal fly ash

2010 ◽  
Vol 174 (1-3) ◽  
pp. 108-112 ◽  
Author(s):  
Yelong Zhao ◽  
Junwei Ye ◽  
Xiaobin Lu ◽  
Mangang Liu ◽  
Yuan Lin ◽  
...  
Keyword(s):  
Fly Ash ◽  
Coal Fly Ash ◽  
Activated Coal ◽  
Alkali Activated

A novel nickel catalyst supported on activated coal fly ash for syngas production via biogas dry reforming

2020 ◽  
Vol 149 ◽  
pp. 786-793 ◽  
Author(s):  
Yuchen Gao ◽  
Jianguo Jiang ◽  
Yuan Meng ◽  
Aikelaimu Aihemaiti ◽  
Tongyao Ju ◽  
...  
Keyword(s):  
Fly Ash ◽  
Nickel Catalyst ◽  
Coal Fly Ash ◽  
Dry Reforming ◽  
Syngas Production ◽  
Activated Coal

Comparative study on the characteristics of ball-milled coal fly ash

2015 ◽  
Vol 124 (2) ◽  
pp. 839-846 ◽  
Author(s):  
Hui Li ◽  
Ying Chen ◽  
Yan Cao ◽  
Guijian Liu ◽  
Buqing Li
Keyword(s):  
Fly Ash ◽  
Comparative Study ◽  
Coal Fly Ash

scholarly journals Microstructural and Mineralogical Properties of Acid and Alkali Activated Coal Fly Ash

2019 ◽  
Vol 5 (1) ◽  
pp. 612-614 ◽  
Author(s):  
Bijoy Kumar Mondal ◽  
Md. Nurul Islam ◽  
Md. Emdad Hossain ◽  
Md. Nurul Abser
Keyword(s):  
Fly Ash ◽  
Coal Fly Ash ◽  
Mineralogical Properties ◽  
Activated Coal ◽  
Alkali Activated
Sign in / Sign up

Export Citation Format

Share Document