Characterization of porous activated carbon prepared from arhar stalks by single step chemical activation method

Prakash, M.; Raghavendra, G.; Ojha, Shakuntala; Panchal, Manoj

doi:10.1016/j.matpr.2020.05.370

Cited by 67 publications

(24 citation statements)

References 36 publications

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“…The FTIR absorption patterns of activated carbon in this study are in accordance with Om Prakash et al (2020) for activated carbon prepared from arhar stalks using KOH activator in 1:2 wt ratio and heating at 800 °C for two hours. In addition, the FTIR spectra patterns of activated carbon in this study also have similarities to the standard activated carbon spectra pattern used in the research of (Rahmadani & Kurniawati, 2017) and (Mistar et al, 2020).…”

Section: The Functional Group Of Activated Carbon By Ftirsupporting

confidence: 80%

Effect of Activator Type on Activated Carbon Characters from Teak Wood and The Bleaching Test for Waste Cooking Oil

Sriatun

Herawati

Aisyah

2020

J. Rekayasa Kim. Lingkung.

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The starting material for activated carbon was biomass from teak woodcutting, which consists of 47.5% cellulose, 14.4% hemicellulose, and 29.9% lignin. The surface area and iodine number of activated carbons are the factors determining the adsorption ability. This study aims to determine the effect of the activator type on activated carbon characters and test the absorption ability for waste cooking oil. The synthesis stages include carbonization, chemical activation, and then physics activation. The activation process consists of two steps. Firstly, the chemical activation via adding H2SO4, and H3PO4 at room temperature for 24 hours, the second, physical activation by heating at various temperatures of 300, 400, and 500 °C for two hours. The characterizations of activated carbon include water content, ash content, iodine number, functional groups, and surface area. Furthermore, the activated carbon was used as an adsorbent for waste cooking oil for 60 minutes at 100 °C with a stirring of 500 rpm. The results were analyzed using UV-Vis spectrophotometry at a maximum wavelength of 403 nm. The iodine numbers of activated carbon ranged 481.1-1211.4 mg/g and 494.8-1204 mg/g for H3PO4 and H2SO4, respectively.Activated carbon with H3PO4 of 15% and an activation temperature of 400 °C has the highest surface area of 445.30 m2/g. The H2SO4 dan H3PO4 activators can be used to improve the quality of activated carbon in absorbing dyes in waste cooking oil, where the optimum concentration is 10-15% (v/v). The H3PO4 activator tends to produce a higher bleaching percentage than H2SO4.

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Section: The Functional Group Of Activated Carbon By Ftirsupporting

confidence: 80%

Effect of Activator Type on Activated Carbon Characters from Teak Wood and The Bleaching Test for Waste Cooking Oil

Sriatun

Herawati

Aisyah

2020

J. Rekayasa Kim. Lingkung.

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“…There are no diffraction peaks ascribing to other boehmite phases indicating a high purity of the prepared sample. The diffractogram of commercial activated carbon exhibit diffraction peaks corresponds to carbon (JCPDS 00-054-0501) [26][27][28]. Figure 2 shows the TEM images of boehmite and commercial activated carbon.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Boehmite nanopowder recovered from aluminum cans waste as a potential adsorbent for the treatment of oilfield produced water

et al. 2021

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In the present study, high surface area boehmite nanopowder was recovered from aluminum cans waste. The sodium aluminate solution was first prepared by dissolving aluminum cans in NaOH solution and then, H2O2 solution was added to precipitate boehmite. The prepared boehmite was characterized by means of X-ray diffraction (XRD), transmission electron microscopy (TEM) and N2 adsorption–desorption techniques. The thermal stability of the boehmite sample was investigated using thermogravimetry (TG) and differential scanning calorimetry (DSC) techniques. The feasibility of using the prepared boehmite powder as a new low-cost adsorbent for the treatment of oilfield produced water was investigated. For comparison, commercial activated carbon was used for the treatment of the produced water under the same conditions. The efficiency of both of boehmite and activated carbon in the treatment of produced water was determined by monitoring the values of a number of pollution indicators [i.e. turbidity, sulfides, sulfates, total organic carbon (TOC), total petroleum hydrocarbon (TPH), and chemical oxygen demand (COD)] before and after the treatment. The boehmite powder showed very good efficiency in the treatment of the produced water, which is very close to that of commercial activated carbon under the same conditions. The effect of adsorbent dose, treatment time, and pH of the media on the adsorption efficiency of both of boehmite and activated carbon was examined at room temperature using chemical oxygen demand as a pollution indicator. The maximum capacity for COD reduction was 69.6% for boehmite and 83.5% for activated carbon at 40 g/l adsorbent dosage, pH7, and 24-h contact time. Graphic abstract

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“…Particular pollutants and sorbent properties including surface or pore diffusion, electrostatic interaction, hydrogen bonding, and van der walls forces as well as chosen operating conditions are some dominant factors affecting adsorption process [33,34]. Several activation techniques such as carbonization, chemical activation, and pyrolysis can also be conducted to increase the adsorption capacity of the sorbent prior to adsorption process (Figure 1) [35][36][37].…”

Section: Adsorptionmentioning

confidence: 99%

Current Development of Sorbents Derived From Plant and Animal Waste as Green Solution for Treating Polluted Aqueous Media

Martini

Afroze

2021

Jurnal Teknologi

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In this review article, the recent development of organic sorbents derived from plant and animal waste for treating polluted aqueous media is presented. The application of biomass has been recognized reliable to adsorb hazardous pollutants contained in wastewater generated by emerging industries. This paper also discusses other existing technologies for removing pollutants including heavy metals, dyes, oil and grease, antibiotic and phenolic compounds from polluted aqueous media. Furthermore, several prominent examples of plant and animal wastes such as eucalyptus bark, pine bark, rice husk, various fruit peels, and animal bones are also properly reviewed. The effects of modification techniques on sorbent performance such as carbonization, pyrolysis, and chemical impregnation using acid or alkaline chemicals are considerably included. Some gaps in current literature are also discussed including the tendency of certain targeted pollutants, the use of simulated aqueous media, the scale of research projects, and the prominent modification procedures. Eventually, based on the relevant literature, clear conclusion has been drawn that these natural disposals have great potentiality as environmentally friendly sorbent alternative to other commercial expensive sorbents, and their reuse has been part of green solutions supporting a circular economy system.

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Characterization of porous activated carbon prepared from arhar stalks by single step chemical activation method

Cited by 67 publications

References 36 publications

Effect of Activator Type on Activated Carbon Characters from Teak Wood and The Bleaching Test for Waste Cooking Oil

Effect of Activator Type on Activated Carbon Characters from Teak Wood and The Bleaching Test for Waste Cooking Oil

Boehmite nanopowder recovered from aluminum cans waste as a potential adsorbent for the treatment of oilfield produced water

Current Development of Sorbents Derived From Plant and Animal Waste as Green Solution for Treating Polluted Aqueous Media

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