eprintid: 58819
rev_number: 20
eprint_status: archive
userid: 21347
dir: disk0/00/05/88/19
datestamp: 2026-03-02 01:36:42
lastmod: 2026-03-02 01:36:42
status_changed: 2026-03-02 01:36:42
type: thesis
metadata_visibility: show
contact_email: 3334210060@untirta.ac.id
creators_name: CHRISTIAN, CHRISTIAN
creators_id: 3334210060
contributors_type: http://www.loc.gov/loc.terms/relators/THS
contributors_type: http://www.loc.gov/loc.terms/relators/THS
contributors_name: JUNIARSIH, ANDINNIE
contributors_name: HILMAN, HILMAN
contributors_id: 198406032008122002
contributors_id: 20081294
corp_creators: UNIVERSITAS SULTAN AGENG TIRTAYASA
corp_creators: FAKULTAS TEKNIK
corp_creators: JURUSAN TEKNIK METALURGI
title: ANALISIS PENGARUH KONSENTRASI DAN TEMPERATUR PELINDIAN ASAM NITRAT TERHADAP RECOVERY TIMAH DARI DRY DROSS DI PT TIMAH INDUSTRI
ispublished: pub
subjects: QD
subjects: TN
divisions: Metalurgi
full_text_status: restricted
keywords: Dry dross, konsentrasi, temperatur, asam nitrat, leaching, recovery Sn
abstract: Dry dross merupakan limbah padat hasil proses peleburan solder berbasis timah–timbal yang masih mengandung kadar timah tinggi, namun belum dimanfaatkan secara optimal. Penelitian ini bertujuan untuk menganalisis pengaruh konsentrasi dan temperatur leaching asam nitrat (HNO3) terhadap recovery timah (Sn), selektivitas pemisahan Sn dan timbal (Pb), serta karakteristik residu hasil leaching. Proses leaching dilakukan menggunakan larutan HNO₃ dengan variasi konsentrasi 3 M, 4 M, dan 5 M pada temperatur 55 °C, 65 °C, dan 75 °C selama 2 jam dengan rasio padat–cair 1/10 g/L. Hasil leaching dipisahkan menjadi filtrat dan residu, kemudian dianalisis menggunakan XRF dan XRD. Hasil penelitian menunjukkan bahwa peningkatan konsentrasi HNO₃ meningkatkan recovery Sn, dengan kondisi optimum diperoleh pada konsentrasi 5 M dan temperatur 75 °C yang menghasilkan persentase Sn sebesar 99,55% dan recovery Sn 92,5%. Temperatur berpengaruh terhadap keseimbangan antara pelarutan Sn dan pembentukan lapisan pasif SnO₂. Pada konsentrasi 3 M, peningkatan suhu cenderung meningkatkan pelarutan Sn, sedangkan pada konsentrasi 5 M peningkatan suhu mempercepat pembentukan SnO₂ yang stabil sehingga Sn lebih banyak tertahan dalam residu. Pb menunjukkan perilaku sebaliknya, Pb lebih mudah terlarut sebagai Pb²⁺ dalam larutan nitrat. Analisis XRD residu menunjukkan bahwa fase dominan yang terbentuk adalah SnO₂, dengan keberadaan minor PbO dan Fe2O3. Hasil ini menunjukkan bahwa leaching selektif menggunakan HNO3 efektif untuk memisahkan Pb ke dalam larutan dan mempertahankan Sn dalam bentuk oksida pada residu.

Kata Kunci : Dry dross, konsentrasi, temperatur, asam nitrat, leaching, recovery Sn
date: 2026-01-19
date_type: completed
pages: 84
institution: Fakultas Teknik Universitas Sultan Ageng Tirtayasa
department: Teknik Metalurgi
thesis_type: sarjana
thesis_name: sarjana
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funders: PT. Timah Industri
projects: Magang Penelitian
citation:   CHRISTIAN, CHRISTIAN  (2026) ANALISIS PENGARUH KONSENTRASI DAN TEMPERATUR PELINDIAN ASAM NITRAT TERHADAP RECOVERY TIMAH DARI DRY DROSS DI PT TIMAH INDUSTRI.  S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.   
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