<mets:mets OBJID="eprint_47804" LABEL="Eprints Item" 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" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:mets="http://www.loc.gov/METS/" xmlns:xlink="http://www.w3.org/1999/xlink"><mets:metsHdr CREATEDATE="2026-10-09T09:11:46Z"><mets:agent ROLE="CUSTODIAN" TYPE="ORGANIZATION"><mets:name>Repository Universitas Negeri Padang</mets:name></mets:agent></mets:metsHdr><mets:dmdSec ID="DMD_eprint_47804_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:titleInfo><mods:title>Sintesis Material Berbasis Silika Xerogel dari Kulit Durian (Durio Zibenthinus Murr.) untuk Penyerapan Methylene Blue</mods:title></mods:titleInfo><mods:name type="personal"><mods:namePart type="given">Afdila</mods:namePart><mods:namePart type="family">Nada</mods:namePart><mods:role><mods:roleTerm type="text">author</mods:roleTerm></mods:role></mods:name><mods:abstract>Kulit durian merupakan limbah utama dari buah durian yang setelah melalui proses pembakaran menghasilkan abu kulit durian dengan kandungan komponen anorganik yang didominasi oleh silika, kemudian disintesis menjadi silika xerogel menggunakan metode sol-gel. Silika xerogel yang dihasilkan memiliki struktur amorf, luas permukaan yang besar, porositas tinggi, serta gugus fungsi aktif silanol (Si-OH) dan siloksan (Si-O-Si), sehingga dapat diaplikasikan sebagai adsorben untuk penyerapan zat warna metilen biru menggunakan optimasi pH, konsentrasi, dan waktu kontak. Hasil penelitian menunjukkan bahwa silika xerogel memiliki kapasitas adsorpsi maksimum sebesar 195,53696 mg/g pada kondisi optimum pH 6, konsentrasi 800 ppm, dan waktu kontak 60 menit, serta mengikuti model isoterm Freundlich dengan nilai koefisien determinasi (R²) sebesar 0,9993 yang mengindikasikan mekanisme adsorpsi secara kimia (Isotern Langmuir) dan berlangsung secara monolayer.</mods:abstract><mods:classification authority="lcc">QD Chemistry</mods:classification><mods:originInfo><mods:dateIssued encoding="iso8601">2026-02</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_47804"><mets:rightsMD ID="rights_eprint_47804_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:useAndReproduction>
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