scholarly journals Microwave-assisted KOH activation preparation of groundnut shell based activated carbon for methyl yellow adsorption

2019 ◽  
Author(s):  
Azduwin Khasri ◽  
Mohamad Nasran Nasehir Khan ◽  
Mohd Azmier Ahmad
Keyword(s):  
Activated Carbon ◽  
Koh Activation ◽  
Microwave Assisted ◽  
Groundnut Shell ◽  
Methyl Yellow

Microwave-assisted one-step preparation of macadamia nut shell-based activated carbon for efficient adsorption of Reactive Blue

2017 ◽  
Vol 41 (24) ◽  
pp. 15373-15383 ◽  
Author(s):  
Chunfeng Du ◽  
Yongtao Xue ◽  
Zhansheng Wu ◽  
Zhilin Wu
Keyword(s):  
Activated Carbon ◽  
Microwave Radiation ◽  
Koh Activation ◽  
Microwave Assisted ◽  
Macadamia Nut ◽  
One Step

In this work, macadamia nut shell-based activated carbon (MNSAC) was prepared using macadamia nut shells (MNS) through KOH activation under microwave radiation.

scholarly journals Competitive adsorption of naphthalene and phenanthrene on walnut shell based activated carbon and the verification via theoretical calculation

RSC Advances ◽  
2020 ◽  
Vol 10 (18) ◽  
pp. 10703-10714 ◽  
Author(s):  
Zhansheng Wu ◽  
Zhonghai Sun ◽  
Pengyun Liu ◽  
Qing Li ◽  
Renpeng Yang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Theoretical Calculation ◽  
Competitive Adsorption ◽  
Walnut Shell ◽  
Koh Activation ◽  
Microwave Assisted

Walnut shell based activated carbon (WAC) was prepared via microwave-assisted KOH activation.

Preparation of High Surface Area Activated Carbon from Spent Phenolic Resin by Microwave Heating and KOH Activation

2018 ◽  
Vol 37 (1) ◽  
pp. 59-68 ◽  
Author(s):  
Song Cheng ◽  
Libo Zhang ◽  
Shengzhou Zhang ◽  
Hongying Xia ◽  
Jinhui Peng
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Microwave Power ◽  
Phenolic Resin ◽  
High Surface ◽  
High Surface Area ◽  
Raw Material ◽  
Bet Surface Area ◽  
Koh Activation ◽  
Microwave Assisted

AbstractThe spent phenolic resin is as raw material for preparing high surface area activated carbon (HSAAC) by microwave-assisted KOH activation. The effects of microwave power, activation duration and impregnation ratio (IR) on the iodine adsorption capability and yield of HSAAC were investigated. The surface characteristics of HSAAC were characterized by nitrogen adsorption isotherms, FTIR, SEM and TEM. The operating variables were optimized utilizing the response surface methodology (RSM) and were identified to be microwave power of 700 W, activation duration of 15 min and IR of 4, corresponding to a yield of 51.25 % and an iodine number of 2,384 mg/g. The pore structure parameters of the HSAAC, i. e., Brunauer–Emmett–Teller (BET) surface area, total pore volume, and average pore diameter were estimated to be 4,269 m2/g, 2.396 ml/g and 2.25 nm, respectively, under optimum conditions. The findings strongly support the feasibility of microwave-assisted KOH activation for preparation of HSAAC from spent phenolic resin.

scholarly journals Parametric Study on Microwave-Assisted Pyrolysis Combined KOH Activation of Oil Palm Male Flowers Derived Nanoporous Carbons

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2876
Author(s):  
Napat Kaewtrakulchai ◽  
Kajornsak Faungnawakij ◽  
Apiluck Eiad-Ua
Keyword(s):  
Microwave Radiation ◽  
Oil Palm ◽  
Radiation Power ◽  
Operating Time ◽  
Bet Surface Area ◽  
Koh Activation ◽  
Nanoporous Carbons ◽  
Microwave Assisted ◽  
Activating Agent ◽  
Male Flowers

Oil palm male flowers (PMFs), an abundant agricultural waste from oil palm plantation in Thailand, have been utilized as an alternative precursor to develop nanoporous carbons (NPCs) via microwave-assisted pyrolysis combined potassium hydroxide (KOH) activation. The influences of relevant processing variables, such as activating agent ratio, microwave power, and activation time on the specific pore characteristics, surface morphology, and surface chemistry of PMFs derived nanoporous carbons (PMFCs) have been investigated to explore the optimum preparation condition. The optimum condition under a microwave radiation power of 700 W, activation holding time of 6 min, and activating agent ratio of 2:1 obtained the PMFC with the highest Brunauer–Emmett–Teller (BET) surface area and total pore volume approximately of 991 m2/g and 0.49 cm3/g, composed of a carbon content of 74.56%. Meanwhile, PMFCs have a highly microporous structure of about 71.12%. Moreover, activating agent ratio and microwave radiation power indicated a significant influence on the surface characteristics of PMFCs. This study revealed the potential of oil palm male flowers for the NPCs’ production via microwave-assisted KOH activation with a short operating-time condition.

scholarly journals Adsorptive remediation of Cu(II) and Ni(II) by microwave assisted H3PO4 activated carbon

2017 ◽  
Vol 10 ◽  
pp. S2836-S2844 ◽  
Author(s):  
Vinod Kumar Gupta ◽  
Deepak Pathania ◽  
Shikha Sharma
Keyword(s):  
Activated Carbon ◽  
Microwave Assisted

High Cr(VI) Adsorption Performance of Coal-Based Activated Carbon in Aqueous Solution

2013 ◽  
Vol 798-799 ◽  
pp. 1123-1127
Author(s):  
Hua Lei Zhou ◽  
Qiong Qiong Zhu ◽  
Dong Hua Huang
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Pore Structure ◽  
Ph Value ◽  
High Surface ◽  
High Surface Area ◽  
Koh Activation ◽  
Transmission Electron ◽  
Mesoporous Adsorbent ◽  
Initial Ph

The activated carbon with high surface area was prepared by KOH activation from anthracite and used as adsorbent for removal of Cr (VI) from aqueous solution. The pore structure and surface properties were characterized by N2 adsorption at 77K, transmission electron microscope (TEM) and Fourier transform infrared spectroscopy ( FTIR). Effect of pH and isotherms at different temperature were investigated. Results show that the prepared carbon is a microporous-and mesoporous-adsorbent with developed pore structure and abundant surface oxygen-containing groups. PH value of the solution plays key function on the adsorption. The chemical adsorption dominates the adsorption process. The activated carbon exhibits much higher Cr adsorption capacity than the commercial activated carbon at initial pH of ~3. The equilibrium adsorption data are fitted by both Freundlich model and Langmuir model well.

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