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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Engineering Environmental Science

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Penjerapan Kation Fe3+, Pb2+ Menggunakan TBKA dan TBMTKA sebagai Bahan Penjerap: Kajian Variasi pH, Kapasitas Adsorpsi, dan Waktu Kontak: Adsorption of Fe3+, Pb2+ Cations Using TBKA and TBMTKA as Adsorbents: Study of pH Variations, Adsorption Capacity, and Contact Time Busroni; Chairil Anwar; Sri Juari Santosa
Jurnal Teknologi Lingkungan Vol. 24 No. 1 (2023)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jtl.2023.242

Abstract

Adsorption capacity is the most important physicochemical process that occurs at solid-liquid and solid-gas interfaces. Adsorption has become the method of choice for removing, recovering, and recycling toxic heavy metals from wastewater. Efforts to reduce the presence of heavy metals in the affected environment caused and contaminated by heavy metals in waters. The aim of this study was to measure the adsorption capacity of Pb2+ ions and Fe3+ ions by applying 5,11,17,23-tetra-(t-butil)-25,26,27,28-tetra-Hidroksi-Kaliks[4]arena (TBKA) and 5,11,17,23-tetra-tert-butil-25-monohidroksi-26,27,28tribenzoiloksi kaliks[4]arena (TBMTKA) adsorbents with varying pH. Characterization of TBMTKA using FT-IR and 1H-NMR spectroscopy. TBKA and TBMTKA are used as adsorbents for Pb2+ ions and Fe3+ ions. The results showed that variations in pH affected the adsorption capacity by TBMTKA of Pb2+ and Fe3+ ions. The adsorption capacity of TBMTKA on Pb2+ ions with a large variation in pH was 6.32; 2.16; 4.14; 10.52; and 2.88 mg/g, while the adsorption capacity by TBKA for Fe3+ ions was 8.4; 13.32; 11.6; 14.18; and 6.66 mg/g.   Abstrak Kapasitas adsorpsi merupakan proses fisika-kimia terpenting yang terjadi pada zat padat-cair dan antarmuka padat-gas. Adsorpsi telah menjadi pilihan metode untuk menghilangkan, memulihkan, dan mendaur ulang racun logam berat dari air limbah. Upaya untuk mengurangi keberadaan logam berat di lingkungan terdampak yang ditimbulkan dan terkontaminasi logam berat di perairan. Penelitian bertujuan menentukan kapasitas adsorpsi ion Pb2+ dan ion Fe3+ dan mengaplikasikan bahan adsorben 5,11,17,23-tetra-(t-butil)-25,26,27,28-tetra-Hidroksi-Kaliks[4]arena (TBKA) dan 5,11,17,23-tetra-tert-butil-25-monohidroksi-26,27,28tribenzoiloksi kaliks[4]arena (TBMTKA) dengan berbagai variasi pH. Karakterisasi TBKA dan TBMTKA dengan spektroskopi FTIR dan 1H-NMR. masing masing sebagai bahan penjerap terhadap ion Pb2+ dan ion Fe3+. Hasil penelitian diperoleh bahwa variasi pH berpengaruh pada kapasitas adsorpsi ion Pb2+ dan Fe3+.  Kapasitas adsorpsi oleh TBMTKA terhadap ion Pb2+ dengan variasi pH besarnya adalah 6,32; 2,16; 4,14; 10,52; dan 2,88 mg/g, sedangkan kapasitas adsorpsi oleh TBKA terhadap ion Fe3+ adalah 8,4; 13,32; 11,6; 14,18; dan 6,66 mg/g.
Effect of Zeolite Concentration on Hydrogel Characteristics of Arrowroot-Based Starch-G-Poly(Acrylic Acid)/Zeolite Composite Sjaifullah, Achmad; Saputra, Beny Akhmat; Adiwinata, I Nyoman; Santoso, Agung Budi; Busroni; Reza, Muhammad
Indonesian Chimica Letters Vol. 1 No. 2 (2022)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (856.304 KB) | DOI: 10.19184/icl.v1i2.201

Abstract

This study aims to synthesize a hydrogel zeolite composite of arrowroot starch graft copolymerized with acrylic acid through a radical polymerization reaction in a water. Various scenarios were tested using different natural zeolite concentration to determine the impact on swelling/water absorption of the composite. The resulting product was a solid gel-the test results showed that the swelling increased as the ratio of starch to acrylic acid decreased. Increased starch concentrations generally lead to decreased water absorption (swelling capacity). Adding a zeolite improved swelling to some extent and the optimum zeolite concentration was 60%. The increased concentration of zeolite also hardened the hydrogel composite. The highest swelling in the hydrogel composite of starch-g-poly(acrylic acid)/zeolite 60% is 1056.25 g.g-1. FTIR analysis of functional groups was conducted to determine differences in the IR spectra of arrowroot starch, acrylic acid, hydrogels, zeolites, and composite hydrogel. Si-O signal appearing on the IR spectra of hydrogel composite with wave number 1030 cm-1 indicates that composite hydrogel with zeolite was synthesized
Effect of pH and Incubation Time on Dissolved Nitrogen During Autolityc Degradation of Chicken Intestine Aulia, Eldiani; Sjaifullah, Achmad; Handayani, Wuryanti; Busroni; Oktavianawati , Ika; Reza, Muhammad
Indonesian Chimica Letters Vol. 2 No. 1 (2023)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/icl.v2i1.372

Abstract

Chicken intestine is a part of internal organs, which are rich in protein and protease enzymes. The protease enzyme could self-degrade (autolytic degradation process) proteins in the chicken intestine at an appropriate pH and incubation time. This process produces a shorter chain polypeptide having a higher solubility protein called protein hydrolysates. Protein hydrolysates have shown a good impact in foods and health applications. In this study, the autolytic degradation of chicken intestine was carried out to obtain protein hydrolysates. The effect of pH and incubation time on the dissolved nitrogen (%N) and protein content ([protein]) in hydrolysate from the autolytic degradation of chicken intestine explained in this paper. The incubation pH used in this study was 2.5, 3.5, 5.5., and 6.3 while the the incubation time was 0, 6, 12, and 18 h. Chicken intestine was incubated for 18 h at several different pHs, and the % N and protein content were determined by using Formol titration and Bradford methods, respectively, within       6 h intervals. It was obtained the % N and [protein] content increase at pH 2.5 and 3.5 during 18 h of incubation time and they were decreased at a higher pH. The optimum % N and [protein] content were 5.98±0.51 % and 25.3±0.04 mg mL-1, respectively, obtained at pH of 2.5 during 18 h incubation time.
Co-Authors Achmad Sjaifullah Adiwinata, I Nyoman Agung Budi Santoso Aulia, Eldiani Chairil Anwar Muhammad Reza Oktavianawati , Ika Saputra, Beny Akhmat Sri Juari Santosa Wuryanti Handayani