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Tarmizi Taher
Department of Environmental Engineering, Institut Teknologi Sumatera, Lampung Selatan, 35365, Indonesia
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Environmental Science Materials Science & Nanotechnology Physics

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Innovative Modified of Cu-Al/C (C = Biochar, Graphite) Composites for Removal of Procion Red from Aqueous Solution Alfan Wijaya; Patimah Mega Syah Bahar Nur Siregar; Aldi Priambodo; Neza Rahayu Palapa; Tarmizi Taher; Aldes Lesbani
Science and Technology Indonesia Vol. 6 No. 4 (2021): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2021.6.4.228-234

Abstract

Innovative modification of Cu-Al/C composites was synthesized by coprecipitation method at pH 10 and added biochar (BC) and graphite (GF) to form Cu-Al/BC and Cu-Al/GF composites. Pristine and composites were characterized by XRD, FT-IR, Thermalgravimetric, and surface area using the BET method. The XRD diffraction and FTIR spectrum of Cu-Al/BC and Cu-Al/GF showed that the composite material from LDH, biochar, and graphite was successfully prepared. Modified LDH were surface area higher than the pristine, which obtained 200.90 m2/g and 18.83 m2/g for Cu-Al/BC and Cu-Al/GF respectively.  Cu-Al/BC and Cu-Al/GF were tested for selectivity on several anionic dyes, it was known that procion red (PR) dye was more easily adsorbed than other anionic dyes. Materials were applied as adsorbents of procion red (PR) dye. The advantages of composites were evaluated by the regeneration process of adsorbent on PR. The result of composite toward PR re-adsorption process showed that Cu-Al/BC and Cu-Al/GF had structural stability higher than starting materials until five cycles process. Furthermore, materials were applied as adsorbents of procion red (PR) dye. The maximum adsorption capacity obtained was 93.458 mg/g for Cu-Al/BC and 49.505 mg/g for Cu-Al/GF. Both innovative modified composites have shown effective adsorbents to the removal of PR from an aqueous solution.
Physical and Mechanical Properties of Bamboo Oriented Strand Board Prepared from Alkali-Immersed Strands Sena Maulana; Tarmizi Taher; Aditya Rianjanu; Melany Febrina; Sarah Agustina; Rio Ardiansyah Murda; Wahyu Hidayat; Yazid Bindar
Science and Technology Indonesia Vol. 8 No. 1 (2023): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2023.8.1.1-8

Abstract

In this work, the physical and mechanical properties of bamboo oriented strand board (BOSB) prepared from alkali-immersed strands were examined. The Dendrocalamus asper strands were modified with alkali treatment by immersing them in 1% sodium hydroxide solution for 1, 2, and 3 hours. Three-layers BOSBs (30 x 30 x 0.9 cm3) were prepared using phenol-formaldehyde (PF) adhesive of 8% concentration and 1% paraffin. According to JIS A 5908:2003 Standard, the physical and mechanical characteristics of BOSB were evaluated (JSA, 2003). The study showed that alkali treatment improved the dimensional stability of BOSB. Immersion in 1% sodium hydroxide solutions enhanced internal bonding (IB). The longer the immersion time, the better the WA, TS, and IB values. However, alkali treatment decreased the bending strength, i.e., modulus of elasticity (MOE) and modulus of rupture (MOR). The physical and mechanical properties of all BOSBs met the commercial standard, except the BOSBs prepared from strand with alkali immersion treatment by 1% sodium hydroxide solution for 3 hours. Alkali immersion treatment of D. asper strands for producing BOSB for 1-2 hours was still acceptable. The results could provide an alternative method to produce high-performance oriented strand board using bamboo as the raw materials.
Co-Authors Aldes Lesbani Aldi Priambodo Alfan Wijaya Melany Febrina Neza Rahayu Palapa Patimah Mega Syah Bahar Nur Siregar Rianjanu, Aditya Rio Ardiansyah Murda Sarah Agustina Sena Maulana Wahyu Hidayat Yazid Bindar