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Adsorption of Congo Red onto Humic Acid Isolated from Peat Soil Gambut Regency, South Kalimantan

Molekul: Jurnal Ilmiah Kimia · Vol. 18 No. 2 (2023) · hlm. 330–338

DOI
10.20884/1.jm.2023.18.2.8685
ISSN
2503-0310, 1907-9761
Terbit
2023-07-10
Penerbit
Universitas Jenderal Soedirman
Bahasa
eng

Abstrak

Humic acid is one of the green materials for wastewater treatment including for removal dyes as an adsorbent. Humic acid was isolated from peat soil, Gambut Regency, South Kalimantan following International Humic Substances Society method, and used to adsorb Congo red. The adsorption process was carried out in a batch system and the effect of pH, contact time, and adsorption capacity of Congo red on humic acid were studied. The adsorbent characterization by using FTIR. The results showed that the adsorption of Congo red on humic acid occurred at the optimum pH of pH 6, the optimum contact time was 120 minutes. The adsorption capacity of Congo red onto humic acid of 33.33 mg/g and follows the Langmuir model with R2 = 0.9926. The characterization of humic acid functional groups before and after adsorption of Congo red showed that the signal at 1,712.79 cm-1 were shifted to 1,705.07 cm-1 and 1,273.02 cm-1 were shifted to 1,265.30 cm-1. These suggested that the mechanism interaction was the electrostatic interaction between -NH3+ functional group of Congo red group and -COO- functional group of humic acid. It means that humic acid isolated from peat soil could be used as an adsorbent for the removal Congo red.

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  • Lambung Mangkurat University
  • Tanjungpura University
  • Chiba University
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Rekan penulisOrganisasiArtikel bersama
Rodiansono RodiansonoLambung Mangkurat University5
Agung NugrohoLambung Mangkurat University3
Sadang HusainLambung Mangkurat University2
Dahlena AriyaniLambung Mangkurat University1
Utami IrawatiLambung Mangkurat University1
Munaa Masyu AbbasLambung Mangkurat University1
Ihda RaihanaLambung Mangkurat University1
Muhammad Iqbal PratamaLambung Mangkurat University1
Abdullah AbdullahLambung Mangkurat University1
Susi SusiLambung Mangkurat University1
Sutomo SutomoLambung Mangkurat University1
Ditya KristinaLambung Mangkurat University1
Dwi Rasy MujiyantiLambung Mangkurat University1
Atina Sabila AzzahraLambung Mangkurat University1
Elisa HayatiLambung Mangkurat University1
Kamilia MustikasariLambung Mangkurat University1
Sutomo SutomoLambung Mangkurat University1
Shogo ShimazuChiba University1
Syahrul KhairiTanjungpura University1
Eko Rini IndrayatieLambung Mangkurat University1
Ana ErmiyatiLambung Mangkurat University1
Kholifatu RosyidahLambung Mangkurat University1
Nor LatifahLambung Mangkurat University1
Evi Mintowati KuntoriniLambung Mangkurat University1
Farah Eka Putri WisudaLambung Mangkurat University1

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Sumber metadata: OAI-PMH (metadata jurnal) https://jos.unsoed.ac.id/index.php/jm/oai, pertama di-harvest 9 Nov 2026, terakhir terlihat 9 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en-US"> Adsorption of Congo Red onto Humic Acid Isolated from Peat Soil Gambut Regency, South Kalimantan</dc:title>
	<dc:creator>Umaningrum, Dewi</dc:creator>
	<dc:creator>Nurmasari, Radna</dc:creator>
	<dc:creator>Santoso, Uripto Trisno</dc:creator>
	<dc:creator>Astuti, Maria Dewi</dc:creator>
	<dc:creator>Pradita, Hapsari Tyas</dc:creator>
	<dc:description xml:lang="en-US">Humic acid is one of the green materials for wastewater treatment including for removal dyes as an adsorbent. Humic acid was isolated from peat soil, Gambut Regency, South Kalimantan following International Humic Substances Society method, and used to adsorb Congo red. The adsorption process was carried out in a batch system and the effect of pH, contact time, and adsorption capacity of Congo red on humic acid were studied. The adsorbent characterization by using FTIR. The results showed that the adsorption of Congo red on humic acid occurred at the optimum pH of pH 6, the optimum contact time was 120 minutes. The adsorption capacity of Congo red onto humic acid of 33.33 mg/g and follows the Langmuir model with R2 = 0.9926. The characterization of humic acid functional groups before and after adsorption of Congo red showed that the signal at 1,712.79 cm-1 were shifted to 1,705.07 cm-1 and 1,273.02 cm-1 were shifted to 1,265.30 cm-1. These suggested that the mechanism interaction was the electrostatic interaction between -NH3+ functional group of Congo red group and -COO- functional group of humic acid. It means that humic acid isolated from peat soil could be used as an adsorbent for the removal Congo red.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Jenderal Soedirman</dc:publisher>
	<dc:date>2023-07-10</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
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	<dc:identifier>https://jos.unsoed.ac.id/index.php/jm/article/view/8685</dc:identifier>
	<dc:identifier>10.20884/1.jm.2023.18.2.8685</dc:identifier>
	<dc:source xml:lang="en-US">Molekul; Vol 18 No 2 (2023); 330-338</dc:source>
	<dc:source>2503-0310</dc:source>
	<dc:source>1907-9761</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://jos.unsoed.ac.id/index.php/jm/article/view/8685/4188</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2023 Molekul</dc:rights>
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