<mets:mets xsi:schemaLocation="http://www.loc.gov/METS/ http://www.loc.gov/standards/mets/mets.xsd http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-3.xsd" LABEL="Eprints Item" OBJID="eprint_46901" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mets="http://www.loc.gov/METS/" xmlns:xlink="http://www.w3.org/1999/xlink"><mets:metsHdr CREATEDATE="2026-08-29T04:07:08Z"><mets:agent ROLE="CUSTODIAN" TYPE="ORGANIZATION"><mets:name>Repository Universitas Negeri Padang</mets:name></mets:agent></mets:metsHdr><mets:dmdSec ID="DMD_eprint_46901_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:titleInfo><mods:title>Optimasi Penyerapan Zat Warna Congo Red Menggunakan Biosorben Kulit Kacang Tanah (Arachis hypogaea L.) Termodifikasi Surfaktan Cetyltrimethylammonuim Bromide CTAB</mods:title></mods:titleInfo><mods:name type="personal"><mods:namePart type="given">Mesa</mods:namePart><mods:namePart type="family">Saputri</mods:namePart><mods:role><mods:roleTerm type="text">author</mods:roleTerm></mods:role></mods:name><mods:abstract>Kulit kacang tanah dapat dimanfaatkan sebagai biosorben karena mengandung gugus aktif seperti selulosa dan lignin yang mampu berinteraksi dengan zat warna. Modifikasi kulit kacang tanah dilakukan untuk meningkatkan kemampuan biosorpsinya terhadap zat warna anionik seperti Congo Red. Modifikasi dilakukan dengan menggunakan surfaktan kationik Cetyltrimethylammonium Bromide (CTAB). Biosorben hasil modifikasi dikarakterisasi menggunakan FTIR, sedangkan kapasitas biosorpsi di ukur menggunakan spektrofotometer UV-Vis. Biosorben termodofikasi digunakan untuk membandingkan kapasitas biosorpsi Congo Red dengan biosorben tanpa modifikasi untuk menentukan kondisi optimum. Kondisi optimum biosorpsi Congo Red menggunakan biosorbent termodifikasi CTAB diperoleh pada pH 4, konsentrasi 400 ppm, ukuran partikel 75 μm, waktu kontak 60 menit, dan kecepatan pengadukan 250 rpm, dengan kapasitas biosorpsi maksimum sebesar 48 mg/g jauh lebih tinggi dibandingkan biosorbent tanoa modifikasi yang hanya sebesar 9,57 mg/g.</mods:abstract><mods:classification authority="lcc">QD Chemistry</mods:classification><mods:originInfo><mods:dateIssued encoding="iso8601">2025</mods:dateIssued></mods:originInfo><mods:originInfo><mods:publisher>Universitas Negeri Padang;Kimia FMIPA UNP</mods:publisher></mods:originInfo><mods:genre>Thesis</mods:genre></mets:xmlData></mets:mdWrap></mets:dmdSec><mets:amdSec ID="TMD_eprint_46901"><mets:rightsMD ID="rights_eprint_46901_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:useAndReproduction>
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