Humic acids elimination from aqueous media utilizing derived activated carbon from raw maize tassel on equilibrium, thermodynamic and kinetics

2019 ◽  
Vol 160 ◽  
pp. 250-259
Author(s):  
Mahboube Ebrahimi ◽  
Saideh Bagheri ◽  
Maryam Maleki Taleghani ◽  
Majid Ghorabani
Keyword(s):  
Activated Carbon ◽  
Humic Acids ◽  
Aqueous Media ◽  
Equilibrium Thermodynamic ◽  
Maize Tassel

scholarly journals Producing Magnetic Nanocomposites from Paper Sludge for the Adsorptive Removal of Pharmaceuticals from Water—A Fractional Factorial Design

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 287
Author(s):  
Luciana S. Rocha ◽  
Érika M. L. Sousa ◽  
María V. Gil ◽  
João A. B. P. Oliveira ◽  
Marta Otero ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Factorial Design ◽  
Fractional Factorial Design ◽  
Metal Oxide Nanoparticles ◽  
Aqueous Media ◽  
Fractional Factorial ◽  
Paper Sludge ◽  
Synthesis Conditions ◽  
Adsorptive Removal ◽  
Iron Salts

In view of a simple after-use separation, the potentiality of producing magnetic activated carbon (MAC) by intercalation of ferromagnetic metal oxide nanoparticles in the framework of a powder activated carbon (PAC) produced from primary paper sludge was explored in this work. The synthesis conditions to produce cost effective and efficient MACs for the adsorptive removal of pharmaceuticals (amoxicillin, carbamazepine, and diclofenac) from aqueous media were evaluated. For this purpose, a fractional factorial design (FFD) was applied to assess the effect of the most significant variables (Fe3+ to Fe2+ salts ratio, PAC to iron salts ratio, temperature, and pH), on the following responses concerning the resulting MACs: Specific surface area (SBET), saturation magnetization (Ms), and adsorption percentage of amoxicillin, carbamazepine, and diclofenac. The statistical analysis revealed that the PAC to iron salts mass ratio was the main factor affecting the considered responses. A quadratic linear regression model A = f(SBET, Ms) was adjusted to the FFD data, allowing to differentiate four of the eighteen MACs produced. These MACs were distinguished by being easily recovered from aqueous phase using a permanent magnet (Ms of 22–27 emu g−1), and their high SBET (741–795 m2 g−1) were responsible for individual adsorption percentages ranging between 61% and 84% using small MAC doses (35 mg L−1).

scholarly journals DEVELOPMENT MODEL FOR REMOVAL TOTAL IRON IN “GAMBUT WATER” FOR DRINKING WATER

2015 ◽  
Vol 1 (2) ◽  
pp. 170
Author(s):  
Sutrisno ◽  
Elizabeth Tjahjadarmawan ◽  
Fifi
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Optimum Condition ◽  
Aqueous Media ◽  
Analytical Techniques ◽  
Total Iron ◽  
Calcium Hypochlorite ◽  
Adsorption Technology ◽  
Adsorption Processes ◽  
Small Model

 ABSTRACT This research is focused on characterization of activated carbon from solid waste CPO industries and applying for treatments of gambut water for iron removal in aqueous media. Key parameters in the present study include TSS, DO, pH and total phenol is also determinated. Methods of sampling and analytical techniques for measuring key parameters are by using extended method. The small model has been developed by combining of the composting and adsorption technology.  The coagulant material such as filter alum, soda caustic, and calcium hypochlorite in any ratios are varied and the optimum condition is achieved. The activated carbon is used as adsorbent by using column model. The overall results show that after coagulation and adsorption processes the total iron, TSS, DO and pH are under threshold levels (Indonesian Regulation) and suitable for drinking water meanwhile other parameters are still uncovered in this investigation. Tentatively, it can be concluded that the proposed gambit water design has achieved the optimum condition. A further study on the improvement of the treatment design and service time for adsorption process is still in progress. Keywords : total iron, gambut water, activated carbon, combining model.

Nanocomposite material from TiO2 and activated carbon for the removal of pharmaceutical product sulfamethazine by combined adsorption/photocatalysis in aqueous media

2020 ◽  
Vol 27 (20) ◽  
pp. 25523-25534 ◽  
Author(s):  
Samir Briche ◽  
Mohammed Derqaoui ◽  
Mohammed Belaiche ◽  
El Mountassir El Mouchtari ◽  
Pascal Wong-Wah-Chung ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Media ◽  
Pharmaceutical Product ◽  
Nanocomposite Material

scholarly journals Adsorption Characteristics of Humic Acids by Granular Activated Carbon

1997 ◽  
Vol 15 (7) ◽  
pp. 507-516 ◽  
Author(s):  
S.H. Lin ◽  
C.M. Lin
Keyword(s):  
Activated Carbon ◽  
Humic Acid ◽  
Surface Diffusion ◽  
Humic Acids ◽  
Granular Activated Carbon ◽  
Model Parameters ◽  
Adsorption System ◽  
Transfer Resistance ◽  
Liquid Phase Mass Transfer ◽  
Continuous Adsorption

The adsorption of humic acids on granular activated carbon has been investigated. A commerically available humic acid and that extracted from the bottom sludge of a dam were employed in the studies. Both batch and continuous adsorption experiments were conducted. A simplified competitive adsorption model in conjunction with the Freundlich isotherm was employed to represent the batch multicomponent adsorption system and a homogeneous surface diffusion model utilized to describe the continuous adsorption system in a packed-bed column. The model parameters were obtained by best fit of the models to the experimental adsorption data. The results indicated that the liquid-phase mass-transfer resistance, surface diffusion coefficient and the amount of adsorption on the activated carbon decreased with increasing molecular weight of the humic acid. It was also found that the adsorption of humic acid on the activated carbon was primarily a surface diffusion-controlled process.

Removal of methylene blue from aqueous media using activated carbon web

2016 ◽  
Vol 108 (5) ◽  
pp. 803-811 ◽  
Author(s):  
Salman Naeem ◽  
Vijay Baheti ◽  
Jakub Wiener ◽  
Jaromir Marek
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Aqueous Media
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