Karbon Aktif Dari Batubara Lignite Dengan Proses Aktivasi Menggunakan Hidrogen Flourida

Novananda, Ajie; Rahmawati, Ira; Sani, Sani; Astuti, Dwi; Suprianti, Lilik

doi:10.33005/jurnal_tekkim.v15i1.2297

Cited by 4 publications

(3 citation statements)

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“…Chemical activation can increase the ability of coal to absorb water from the surrounding environment. Changes in the surface structure of coal make it more reactive to water and can also change the mineral composition in coal or lead to higher ash formation or deposition after the activation process [33].…”

Section: ) Proximate and Chemical Characteristics Of Sub-bituminous C...mentioning

confidence: 99%

The Ability of Sub-Bituminous Coal Activated with NaOH in Removal of Mercury: Equilibrium and Isotherm Study

2024

IJESD

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Improved utilization strategies for Sub-Bituminous Coal (SC) can be made using alkaline materials to increase soil productivity and can also reduce metal concentrations in aqueous solution. This study aims to examine the characteristics of SC activated with NaOH (SC-NaOH) and the mechanism of Hg 2+ adsorption by SC-NaOH through an adsorption isotherm model approach developed for experimental equilibrium. The SC-NaOH was characterized by proximate composition (29.59% moisture; 76.02% volatile matter; 72.02% ash and 4.02% fixed carbon) and chemical properties (pH 12.60; EC >2.00 dS/m; CEC 141.60 cmol(+)/kg; OC 14.38% C and total N 0.10% N). The adsorption of Hg 2+ on SC-NaOH increased with increasing Hg concentration and decreasing pH. The adsorption capacity and coefficient of Hg 2+ by SC-NaOH were 262.51 mg/g and 131.12 l/kg at pH 1.68 and Hg 2+ concentration of 100 mg/l with a removal efficiency of 65.63%. Hg 2+ adsorption isotherms occurred in Freundlich model (1/n = 1.03: cooperative adsorption and R² = 1) = Langmuir model (RL = 0.94: favorable and R² = 1).

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Section: ) Proximate and Chemical Characteristics Of Sub-bituminous C...mentioning

confidence: 99%

The Ability of Sub-Bituminous Coal Activated with NaOH in Removal of Mercury: Equilibrium and Isotherm Study

2024

IJESD

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“…Kadar air yang semakin rendah mengindikasikan adanya sedikit jumlah air yang tertinggal dan menghalangi pori karbon aktif [20]. Kadar air yang tinggi pada karbon tanpa aktivasi bisa terjadi karena sifat higroskopis yang dimilikinya sehingga memungkinkan terjadi penyerapan uap air dari udara saat proses pendinginan [21]. Kadar air yang tinggi dapat menurunkan kemampuan penyerapan karbon aktif terhadap gas atau cairan sehingga kualitas karbon aktif menjadi berkurang [22].…”

Section: Analisis Kadar Airunclassified

Utilization of Activated Carbon Derived from Dragon Fruit Foliage Using Strong Acid Activator as a Lead (Pb) Metal Adsorbent

Chrisnandari,

Witasari,

Mustikarini

2022

Reka Buana

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The majority of industrial liquid waste contains heavy metal lead (Pb). Lead (Pb) levels can be lowered by employing activated carbon as an adsorbent. Lignin and cellulose found in dragon fruit stem can be employed as activated carbon for heavy metal adsorption. This research aimed to examine the addition of HCl and H3PO4 as activators to the properties of carbon and determine variations in activator concentration that affected the reduction of lead (Pb) levels. The carbonization method was applied to produce carbon. The batch method was implemented to adsorb lead (Pb) on the sample. The utilized concentrations of HCl and H3PO4 to activate carbon were 2, 3, and 4 M. The best water content of activated carbon was obtained by adding 3 M HCl, which accounted for 4.76%. The best iodine absorption, measured for 990,05 mg/g, was procured on HCl 2 M activated carbon. Atomic Absorption Spectrophotometry (AAS) was applied to quantify the lead reduction (Pb) levels, with the best reduction efficiency accounting for 55.6% produced by carbon activated 2M HCl. Furthermore, H3PO4-activated and unactivated carbon only reduced by about 22.2% and 44.4%, respectively. Scanning Electron Microscope (SEM) results revealed that carbon activated with 2 M HCl had a larger cavity than that activated by H3PO4 and without activation. According to the results obtained in this study, dragon fruit stem can be utilized as a low-cost and effective metal (Pb) adsorbent.ABSTRAKLimbah cair dari aktivitas industri sebagian besar mengandung logam berat timbal (Pb). Logam (Pb) dapat diturunkan kadarnya menggunakan karbon aktif. Karbon aktif dapat dibuat dari bahan yang mengandung lignin dan selulosa, salah satunya batang daun buah naga. Tujuan penelitian ini yaitu untuk menentukan pengaruh penambahan aktivator HCl dan H3PO4 terhadap karakteristik karbon aktif serta pengaruh variasi konsentrasi aktivator terhadap penurunan kadar logam (Pb). Metode karbonisasi digunakan untuk pembuatan karbon aktif, sedangkan metode batch digunakan untuk proses adsorpsi logam (Pb). Aktivator HCl dan H3PO4 yang digunakan sebesar 2, 3 dan 4 M. Kadar air terbaik sebesar 4,76% diperoleh pada karbon yang teraktivasi HCl 3 M. Daya serap iod terbaik sebesar 990,05 mg/g diperoleh pada karbon teraktivasi HCl 2 M. Kadar logam (Pb) dianalisis menggunakan Atomic Absorption Spectrophotometry (AAS) dengan efisiensi penurunan terbaik sebesar 55,6% pada karbon aktif teraktivasi HCl 2 M. Efisiensi penurunan kadar logam (Pb) pada karbon teraktivasi H3PO4 dan tanpa aktivasi berturut-turut sebesar 22,2% dan 44,4%. Hasil Scanning Electron Microscope (SEM) menunjukkan bahwa karbon yang teraktivasi HCl 2 M memiliki rongga yang lebih besar dibandingkan dengan yang teraktivasi H3PO4 dan tanpa aktivasi. Hasil dari penelitian ini menunjukkan bahwa daun buah naga berpotensi digunakan sebagai adsorben logam (Pb) yang murah dan cukup efisien.

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“…Sedangkan aktivasi kimia dilakukan dengan menambahkan larutan kimia sebagai aktivator. Jenis aktivator yang dapat digunakan bisa berupa asam maupun basa, seperti H3PO4, NaOH, KOH, H2SO4 (Novananda, 2020). Pemilihan aktivator dalam pembuatan karbon aktif perlu diperhatikan.…”

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Uji Kualitas Sintesis Karbon Aktif Dari Pelepah Aren Teraktivasi Asam Fosfat

Neneng Purnamawati

2023

jrec

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Palm fronds which contain a lot of cellulose have the potential to be used as active carbon. There are three stages in making activated carbon from sugar palm fronds, namely the dehydration process, carbonization process, and activation process using phosphoric acid activator (H3PO4) with a concentration of 1M at temperatures of 450°C and 600°C. The aim of this research is to determine the effect of carbonization temperature on the quality of activated carbon from sugar palm fronds. The activated carbon quality tests carried out include yield tests, water content tests, ash content tests and iodine absorption tests. The results of testing the quality of activated carbon showed that optimal conditions were at a temperature of 450°C with a yield of 22.189%, a water content of 2.562%, a total ash content of 5.86% and an iodine absorption capacity of 81.423 mg/g.

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Karbon Aktif Dari Batubara Lignite Dengan Proses Aktivasi Menggunakan Hidrogen Flourida

Cited by 4 publications

References 0 publications

The Ability of Sub-Bituminous Coal Activated with NaOH in Removal of Mercury: Equilibrium and Isotherm Study

The Ability of Sub-Bituminous Coal Activated with NaOH in Removal of Mercury: Equilibrium and Isotherm Study

Utilization of Activated Carbon Derived from Dragon Fruit Foliage Using Strong Acid Activator as a Lead (Pb) Metal Adsorbent

Uji Kualitas Sintesis Karbon Aktif Dari Pelepah Aren Teraktivasi Asam Fosfat

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