scholarly journals Preparation of Salacca Peel Based Activated Carbon using CeCl3 Catalyzed Hydrothermal Carbonization and Microwave Induced KOH Chemical Activation as Ni-Ion Capacitor Electrode

2020 ◽  
Vol 742 ◽  
pp. 012045
Author(s):  
F C Ondy ◽  
C Chrismanto ◽  
R F Susanti ◽  
H Kristianto ◽  
H Devianto
Keyword(s):  
Activated Carbon ◽  
Chemical Activation ◽  
Hydrothermal Carbonization

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.

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

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.

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

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.

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