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• Effectiveness Bleaching of Waste Cooking Oil Cleaning Using Nano-Montmorillonite Adsorbent

  Silvia Ningsih, Puji Wahyuningsih, Tisna Harmawan

  🏢 Affiliation Details

  (1) Silvia Ningsih: Universitas Samudra

  (2) Puji Wahyuningsih: Department of Chemistry, Faculty of Engineering , Universitas Samudra, Langsa

  (3) Tisna Harmawan: Department of Chemistry, Faculty of Engineering , Universitas Samudra, Langsa

  📄 Pages: 277-287

  📊 Views: 20 , ⬇️ Downloads: 33 , 🌐️ DOI: 10.22373/ekw.v7i2.9252

  📅 Published: 17-01-2022

• Production and Characterization of Adsorbent from Oyster Shell (Crassostrea gigas) Using Physics and Chemical Activation with ZnCl2 and Its Application for Removal of Hexavalent Chromium

  Lia Handayani, Azwar Thaib, Nurhayati Nurhayati, Yayuk Astuti, Adi Darmawan

  🏢 Affiliation Details

  (1) Lia Handayani: Department of Fisheries Product Technology, Faculty of Fisheries, Abulyatama University, Aceh

  (2) Azwar Thaib: Department of Aquaculture, Faculty of Fisheries, Abulyatama University, Aceh

  (3) Nurhayati Nurhayati: Department of Aquaculture, Faculty of Fisheries, Abulyatama University, Aceh

  (4) Yayuk Astuti: Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, Semarang, Central Java

  (5) Adi Darmawan: Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, Semarang, Central Java

  📄 Pages: 329-341

  📊 Views: 49 , ⬇️ Downloads: 34 , 🌐️ DOI: 10.22373/ekw.v6i2.7333

  📅 Published: 30-12-2020

• The Characterization of Oyster Shell (Crassostrea gigas) as Adsorbent in The Removal of Cr(VI) Ions. A Study of NaOH and H2SO4 Activation Effect

  Lia Handayani, Cut Rahmawati, Nurhayati Nurhayati, Yayuk Astuti, Adi Darmawan

  🏢 Affiliation Details

  (1) Lia Handayani: Abulyatama University

  (2) Cut Rahmawati: Universitas abulyatama

  (3) Nurhayati Nurhayati: Abulyatama University

  (4) Yayuk Astuti: Diponegoro University

  (5) Adi Darmawan: Diponegoro University

  📄 Pages: 77-84

  📊 Views: 25 , ⬇️ Downloads: 34 , 🌐️ DOI: 10.22373/ekw.v6i1.5543

  📅 Published: 30-06-2020