Activated carbon from citric acid catalyzed hydrothermal carbonization and chemical activation of salacca peel as potential electrode for lithium ion capacitor’s cathode

Ionics ◽  
2019 ◽  
Vol 25 (8) ◽  
pp. 3915-3925 ◽  
Author(s):  
Ratna Frida Susanti ◽  
Arenst Andreas Arie ◽  
Hans Kristianto ◽  
Marcelinus Erico ◽  
Gerardus Kevin ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Citric Acid ◽  
Chemical Activation ◽  
Lithium Ion ◽  
Hydrothermal Carbonization ◽  
Potential Electrode ◽  
Acid Catalyzed

Catalytic activation and application of micro-spherical carbon derived from hydrothermal carbonization of lignocellulosic biomass: statistical analysis using Box–Behnken design

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 102680-102694 ◽  
Author(s):  
Z. Z. Chowdhury ◽  
S. B. Abd Hamid ◽  
Md. M. Rahman ◽  
R. F. Rafique
Keyword(s):  
Activated Carbon ◽  
Statistical Analysis ◽  
Potassium Hydroxide ◽  
Chemical Activation ◽  
Hydrothermal Carbonization ◽  
Corchorus Olitorius ◽  
Box Behnken Design ◽  
Catalytic Activation ◽  
Spherical Carbon ◽  
Physico Chemical

Activated carbon was produced by physico-chemical activation of hydrothermally carbonized dried stem derived from Corchorus olitorius, commonly known as Jute (JS), using potassium hydroxide (KOH) as an activation agent.

scholarly journals THE ROLE OF N-DOPING TO THE PORE CHARACTERISTICS OF ACTIVATED CARBON FROM VETIVER ROOT DISTILLATION WASTE

Metalurgi ◽  
2021 ◽  
Vol 36 (2) ◽  
Author(s):  
Yohana Fransiska Ferawati ◽  
Ratna Frida Susanti
Keyword(s):  
Activated Carbon ◽  
Functional Group ◽  
Activated Carbons ◽  
Chemical Activation ◽  
Hydrothermal Carbonization ◽  
Nitrogen Atmosphere ◽  
Pore Characteristics ◽  
Average Pore ◽  
N Doping ◽  
Nitrogen Functional Group

This work studied the effect of nitrogen functional group modification on activated carbon synthesized from vetiver root waste on pores development. Synthesis of activated carbon was carried out by hydrothermal carbonization of vetiver root waste at a temperature of 225 ⁰C for 18 hours followed by chemical activation using K2FeO4as activated agent in a furnace at temperature of 800 ⁰C for 2 hours with nitrogen atmosphere flowed at a rate of 100 mL/minute. Urea was used as a nitrogen source. The variation of urea concentration was 1:0 (AC0–800), 1:3 (AC3–800) and 1:5 (AC5–800). The results showed that these activated carbons have mesoporous characteristics with the largest Brunauer Emmett Teller (SBET) surface area of 552.90 m2g-1 and average pore width 3,43 nm. The presence of nitrogen functional group was observed in the Fourier Transform Infrared Spectrometer analysis. Synthesis of activated carbon from vetiver root waste with an addition of urea is the newest method to produce mesoporous activated carbon for electrode and  support catalyst purposes.

scholarly journals Potential Use of Waste Activated Sludge Hydrothermally Treated as a Renewable Fuel or Activated Carbon Precursor

Molecules ◽  
2020 ◽  
Vol 25 (15) ◽  
pp. 3534
Author(s):  
J. A. Villamil ◽  
E. Diaz ◽  
M. A. de la Rubia ◽  
A. F. Mohedano
Keyword(s):  
Activated Carbon ◽  
Activated Sludge ◽  
Activated Carbons ◽  
Chemical Activation ◽  
Hydrothermal Carbonization ◽  
Effect Of Temperature ◽  
Waste Activated Sludge ◽  
Maximum Adsorption Capacity ◽  
Porous Network ◽  
Good Potential

In this work, dewatered waste activated sludge (DWAS) was subjected to hydrothermal carbonization to obtain hydrochars that can be used as renewable solid fuels or activated carbon precursors. A central composite rotatable design was used to analyze the effect of temperature (140–220 °C) and reaction time (0.5–4 h) on the physicochemical properties of the products. The hydrochars exhibited increased heating values (up to 22.3 MJ/kg) and their air-activation provided carbons with a low BET area (100 m2/g). By contrast, chemical activation with K2CO3, KOH, FeCl3 and ZnCl2 gave carbons with a well-developed porous network (BET areas of 410–1030 m2/g) and substantial contents in mesopores (0.079–0.271 cm3/g) and micropores (0.136–0.398 cm3/g). The chemically activated carbons had a fairly good potential to adsorb emerging pollutants such as sulfamethoxazole, antipyrine and desipramine from the liquid phase. This was especially the case with KOH-activated hydrochars, which exhibited a maximum adsorption capacity of 412, 198 and 146 mg/g, respectively, for the previous pollutants.

The Dependence on Temperature of Carbonization and Chemical Activation on Characteristics of Granular Activated Carbon Characteristics

2009 ◽  
Vol 62-64 ◽  
pp. 398-403 ◽  
Author(s):  
C.O. Okieimen ◽  
S.E. Ogbeide
Keyword(s):  
Activated Carbon ◽  
Citric Acid ◽  
Surface Charge ◽  
Bulk Density ◽  
Ammonium Chloride ◽  
Activated Carbons ◽  
Chemical Activation ◽  
Palm Kernel ◽  
Palm Kernel Shell ◽  
Mechanical Abrasion

Nigeria imports large quantities of activated carbon annually for local use. In this study the development of low cost and effective adsorbent from the palm kernel shell for the treatment of waste water is examined.Palm kernel shells were used to produce activated carbon by carbonization at different temperatures (500 -10000C) and by chemical activation using 1M citric acid and saturated ammonium chloride as activated agents. The optimum temperature of carbonisation was found to be 950oC, the activated carbons produced were characterized. The measured characteristics: yield, pH, bulk density, surface area, porosity, resistance to mechanical abrasion and total surface charge of the activated carbon prepared from palm kernel shell were 18.6%, 7.8, 0.636g/ml, 112.09mgl2/gC, 19.23%, 2.36molH+/gC respectively, for citric acid activated carbon . For ammonium chloride activated carbon they were determined to be 17.50%, 8.55, 0.716g/ml, 109.69mgl2/gC, 19.76% and 2.06, 2.36molH+/gC respectively. The experimental results showed the possibility for the production of activated carbon with well developed pore structure, surface, and bulk density high mechanical abrasion and reasonable total surface charge.

Synthesis of activated carbon from Salacca peel using hydrothermal carbonization and microwave assisted chemical activation as promising supercapacitor's electrode

2020 ◽  
Author(s):  
Hans Kristianto ◽  
Ratna Frida Susanti ◽  
Arenst Andreas Arie ◽  
Filbert Christian Ondy ◽  
Claudius Chrismanto ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Chemical Activation ◽  
Hydrothermal Carbonization ◽  
Microwave Assisted

scholarly journals Activated carbon derived from spherical hydrochar functionalized with triethylenetetramine: synthesis, characterizations, and adsorption application

2017 ◽  
Vol 6 (6) ◽  
Author(s):  
Hai Nguyen Tran ◽  
Fu-Chuang Huang ◽  
Chung-Kung Lee ◽  
Huan-Ping Chao
Keyword(s):  
Activated Carbon ◽  
Heavy Metal Ions ◽  
Chemical Activation ◽  
Hydrothermal Carbonization ◽  
Bet Surface Area ◽  
Synthesis Process ◽  
X Ray ◽  
Adsorption Capacities ◽  
Ftir Spectrometry ◽  
Stage Synthesis

AbstractThis study investigated the adsorption capacities of various contaminants on glucose-derived hydrochar (GH) and glucose-activated carbon (GAC) functionalized with triethylenetetramine (TETA). The two-stage synthesis process consisted of (1) hydrothermal carbonization using various TETA concentrations (1%–5%) to create TETA-functionalized GHs, and (2) chemical activation with NaOH to produce TETA-GACs. The basic properties of the adsorbents were examined using Brunauer-Emmett-Teller (BET) surface area analysis, Fourier transform infrared (FTIR) spectrometry, scanning electron microscopy (SEM), and energy dispersive X-ray (EDX) spectroscopy. The adsorption characteristics of the GH and GAC samples toward two heavy metal ions (Pb

Activated carbon from molasses efficiency for Cr(VI), Pb(II) and Cu(II) adsorption: A mechanistic study

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Sugar Industry ◽  
Chemical Activation ◽  
High Surface ◽  
High Surface Area ◽  
Mechanistic Study ◽  
Acid Mixture ◽  
Maximum Adsorption Capacity ◽  
Good Potential

Activated carbon was prepared from molasses, which are natural precursors of vegetable origin resulting from the sugar industry. A simple elaboration process, based on chemical activation with phosphoric acid, was proposed. The final product, prepared by activation of molasses/phosphoric acid mixture in air at 500°C, presented high surface area (more than 1400 m2/g) and important maximum adsorption capacity for methylene blue (625 mg/g) and iodine (1660 mg/g). The activated carbon (MP2(500)) showed a good potential for the adsorption of Cr(VI), Cu(II) and Pb(II) from aqueous solutions. The affinity for the three ions was observed in the following order Cu2+ Cr6+ Pb2+. The process is governed by monolayer adsorption following the Langmuir model, with a correlation coefficient close to unity.

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