Chemical activation of hickory and peanut hull hydrochars for removal of lead and methylene blue from aqueous solutions

Dye wastewater generated is rated as the most polluting wastewater among all the industrial sectors. Adsorption using activated carbon (AC) has been proven to be effective to treat dye wastewater. In this study, jackfruit (Artocarpus heterophyllus) peel waste has been utilized for activated carbon (AC) preparation using chemical activation. This research attempts to study the factors affecting its adsorption performance. Series of experiments conducted consisted of the experiments studying the effect of initial dye concentration and also effect of adsorbent dosage. In the study, CAC showed adsorption capacity of 10.43 mg/g.

Download Full-text

SPOTTED GOLDEN THISTLE STALKS AS A NOVEL LOW-COST SORBENT FOR METHYLENE BLUE SORPTION FROM SYNTHETIC AQUEOUS SOLUTIONS: EQUILIBRIUM AND KINETICS STUDIES

Environmental Engineering and Management Journal ◽

10.30638/eemj.2019.067 ◽

2019 ◽

Vol 18 (3) ◽

pp. 737-747 ◽

Cited By ~ 1

Author(s):

Houcine Benaissa ◽

Zoubida Senouci Bereksi

Keyword(s):

Methylene Blue ◽

Aqueous Solutions ◽

Low Cost ◽

Kinetics Studies ◽

Equilibrium And Kinetics

Download Full-text

Analisis Variasi Temperatur Aktivasi Terhadap Daya Serap Arang Aktif Tandan Aren (Arenga Pinnata Merr) Dengan Agen Aktivasi Potassium Silicate(K2SiO3)

Jurnal Penelitian Pendidikan Fisika ◽

10.36709/jipfi.v5i3.13803 ◽

2020 ◽

Vol 5 (3) ◽

pp. 221

Author(s):

Muhammad Azam ◽

Muhammad Anas ◽

Erniwati Erniwati

Keyword(s):

Methylene Blue ◽

Activated Carbon ◽

Adsorption Capacity ◽

Temperature Variation ◽

Chemical Activation ◽

Weight Ratio ◽

Potassium Silicate ◽

Physical Activation ◽

Activation Temperature ◽

Pyrolysis Reactor

This study aims to determine the effect of variation of activation temperature of activated carbon from sugar palm bunches of chemically activatied with the activation agent of potassium silicate (K2SiO3) on the adsorption capacity of iodine and methylene blue. Activated carbon from bunches of sugar palmacquired in four steps: preparationsteps, carbonizationstepsusing the pyrolysis reactor with temperature of 300 oC - 400 oC for 8 hours and chemical activation using of potassium silicate (K2SiO3) activator in weight ratio of 2: 1 and physical activation using the electric furnace for 30 minutes with temperature variation of600 oC, 650 oC, 700 oC, 750 oC and 800 oC. The iodine and methyleneblue adsorption testedby Titrimetric method and Spectrophotometry methodrespectively. The results of the adsorption of iodine and methylene blue activated carbon from sugar palm bunches increased from 240.55 mg/g and 63.14 mg/g at a temperature of 600 oC to achieve the highest adsorption capacity of 325.80 mg/g and 73.59 mg/g at temperature of 700 oC and decreased by 257.54 mg/g and 52.03 mg/g at a temperature of 800 oCrespectively.However, it does not meet to Indonesia standard (Standard Nasional Indonesia/SNI), which is 750 mg/g and 120 mg/g respectively.

Download Full-text

Electrospun nanofibrous membranes of cellulose acetate containing hydroxyapatite co-doped with Ag/Fe: morphological features, antibacterial and degradation of methylene blue from aqueous solutions

New Journal of Chemistry ◽

10.1039/d1nj00569c ◽

2021 ◽

Author(s):

Ahmed Esmail Shalan ◽

M. Afifi ◽

M.M. El-Desoky ◽

M.k Ahmed

Keyword(s):

Methylene Blue ◽

Aqueous Solutions ◽

Cellulose Acetate ◽

Morphological Features ◽

Molar Ratio ◽

Electrospinning Technique ◽

Nanofiber Membranes ◽

Nanofibrous Membranes ◽

Co Doped

Cellulose acetate nanofiber membranes containing hydroxyapatite co-doped with Ag/Fe were efficaciously attained through the electrospinning technique. Different molar ratio compositions of hydroxyapatite co-doped with Ag/Fe in the structure of the...

Download Full-text

Metal-organic framework Uio-66 for adsorption of methylene blue dye from aqueous solutions

International Journal of Environmental Science and Technology ◽

10.1007/s13762-017-1289-z ◽

2017 ◽

Vol 14 (9) ◽

pp. 1959-1968 ◽

Cited By ~ 51

Author(s):

A. A. Mohammadi ◽

A. Alinejad ◽

B. Kamarehie ◽

S. Javan ◽

A. Ghaderpoury ◽

...

Keyword(s):

Methylene Blue ◽

Aqueous Solutions ◽

Metal Organic Framework ◽

Blue Dye ◽

Methylene Blue Dye ◽

Metal Organic ◽

Organic Framework

Download Full-text

Adsorption of Pollutants from Aqueous Solutions Using Activated and Non-Activated Oak Shells: Parametric and Fractional Factorial Design Study. Part II. Removal of Phenol and Dyes

Adsorption Science & Technology ◽

10.1260/026361703769013916 ◽

2003 ◽

Vol 21 (2) ◽

pp. 189-198

Author(s):

Sameer Al-Asheh ◽

Fawzi Banat ◽

Rana Saeidi ◽

Salam Abu Zaid

Keyword(s):

Methylene Blue ◽

Aqueous Solutions ◽

Factorial Design ◽

Fractional Factorial Design ◽

Sorption Process ◽

Fractional Factorial ◽

Phenol Concentration ◽

Blue Dye ◽

Batch Adsorption ◽

Solution Ph

As in Part I, non-activated (natural) and chemically activated oak shells were evaluated for their ability to remove phenol and Methylene Blue (as a typical dye component) from aqueous solutions. Batch adsorption experiments were conducted to investigate the effect of contact time, sorbent concentration, phenol concentration and the pH of the solution on the sorption process. Activated oak shells adsorbed more phenol than natural oak shells under the same conditions. A decrease in sorbent concentration or an increase in phenol concentration or solution pH resulted in an increase in phenol uptake by the oak shells. The uptake of Methylene Blue increased with decreasing sorbent concentration and with an increase in the dye concentration, but decreased significantly with solution pH. According to the fractional factorial design technique, the sorbent type employed (natural or activated) had the most significant influence on phenol or Methylene Blue uptake followed by sorbent concentration and then sorbate concentration. Interaction amongst the different operating variables played an important role in the uptake of phenol or Methylene Blue dye by the adsorbent considered.

Download Full-text

Ouricuri (Syagrus coronata) fiber: a novel biosorbent to remove methylene blue from aqueous solutions

Water Science & Technology ◽

10.2166/wst.2016.495 ◽

2016 ◽

Vol 75 (1) ◽

pp. 106-114 ◽

Cited By ~ 19

Author(s):

Lucas Meili ◽

Társila Santos da Silva ◽

Daniely Carlos Henrique ◽

João Inácio Soletti ◽

Sandra Helena Vieira de Carvalho ◽

...

Keyword(s):

Methylene Blue ◽

Experimental Design ◽

Aqueous Solutions ◽

Adsorption Capacity ◽

Adsorption Process ◽

Fiber Diameter ◽

Aqueous Media ◽

Process Efficiency ◽

Maximum Adsorption Capacity ◽

Equilibrium Studies

In this work, the potential of ouricuri (Syagrus coronata) fiber as a novel biosorbent to remove methylene blue (MB) from aqueous solutions was investigated. The fiber was prepared and characterized according to the fundamental features for adsorption. A 23 experimental design was used to evaluate the effects of adsorbent dosage (M), fiber diameter (D) and agitation (A) on the adsorption capacity. In the more adequate conditions, kinetic and equilibrium studies were performed. The experimental design results showed that M = 10 g L−1), D = 0.595 mm and A = 200 rpm were the more adequate conditions for MB adsorption. Based on the kinetic study, it was found that the adsorption process was fast, being the equilibrium was attained at about 5 min, with 90% of color removal. The isotherm was properly represented by the Sips model, and the maximum adsorption capacity was 31.7 mg g−1. In brief, it was demonstrated that ouricuri fiber is an alternative biosorbent to remove MB from aqueous media, taking into account the process efficiency and economic viewpoint.

Download Full-text