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All Journal Jukung (Jurnal Teknik Lingkungan) Jurnal Rekayasa Kimia & Lingkungan
Isna Syauqiah
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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KARAKTERISTIK BIOSORBEN PELEPAH NIPAH (Nypa Fruticans) UNTUK PENURUNAN KADAR LOGAM BERAT AIR MERKURI (Hg) Aulia Noor Ikhsan; Yaya Azmiati; Ulfah Delvianti; Isna Syauqiah
Jukung (Jurnal Teknik Lingkungan) Vol 7, No 1 (2021): MARET 2021
Publisher : Program Studi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jukung.v7i1.10814

Abstract

Penelitian ini bertujuan untuk mengetahui karakteristik biosorben pelepah nipah dan menentukan kondisi optimum ukuran partikel dan waktu kontak dalam penurunan kadar merkuri. Proses maserasi menggunakan metanol dan diaktivasi menggunakan HCl. Hasil analisa FT-IR menunjukkan bahwa pada biosorben pelepah nipah memiliki kandungan selulosa yang ditunjukkan dengan gugus fungsi O-H, C-H dan C-O. Pada analisa SEM menunjukkan bahwa luas permukaan biosorben ukuran 100 mesh lebih besar dibandingan dengan luas permukaan 60 dan 80 mesh. Hasil pengujian AAS pada sampel pada ukuran 60 mesh dengan wantu kontak 30,60 dan 90 menit yaitu 99,99902 %, 99,99922 % dan 99,99942 %, pada ukuran 80 mesh dengan waktu kontak 30,60 dan 90 menit yaitu 99,99951 %, 99,99958 % dan 99,99966 %, pada ukuran 100 mesh dengan waktu kontak 30,60 dan 90 menit yaitu 99,99973 %, 99,99981 % dan 99,99989 %. Penyerapan kadar merkuri terbanyak terjadi pada biosorben ukuran 100 mesh dengan waktu kontak 90 menit yaitu 99,99989 %.  Kata Kunci : Adsorpsi, biosorben, karakteristik, merkuri, pelepah nipah. This research attempts to know characteristic of nypa midrib biosorbent and determine optomization particle size and contact time in reduce level mercury. Maceration process using methanol and activation biosorbent is using HCl. The results of FTIR analysis shows that nypa midrib biosorbent contains cellulose indicated by the fungsional group O-H, C-H and C-O. SEM analysis is shows that the surface area biosorbent 100 mesh is bigger than surface area 60 and 80 mesh. The result of AAS for sample 60 mesh with contact time 30, 60 and 90 minute is 99,99902 %, 99,99922 % dan 99,99942 %, at 80 mesh with contact time 30,60 and 90 minute is 99,99951 %, 99,99958 % dan 99,99966 %, and at 100 mesh with contact time 30, 60 and 90 minute is 99,99973 %, 99,99981 % dan 99,99989 %. The highest absorption of mercury levels occurred in biosorbent 100 mesh with contact time 90 minute is 99,99989 %. Keywords: Adsorption, biosorbent, characteristic, mercury, nypa midrib.
Organo-Silica Membrane Prepared from TEOS-TEVS Modified with Organic-Acid Catalyst for Brackish Water Desalination Muthia Elma; Aptar Eka Lestari; Anna Sumardi; Zaini Lambri Assyaifi; Adi Darmawan; Dwi Rasy Mujiyanti; Isna Syauqiah; Aulia Rahma; Linda Suciwati; Yanti Mawaddah
Jurnal Rekayasa Kimia & Lingkungan Vol 16, No 1 (2021): Jurnal Rekayasa Kimia & Lingkungan (June, 2021)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (864.146 KB) | DOI: 10.23955/rkl.v16i2.18107

Abstract

The sol gel process is one of the processes used in the manufacture of thin films on membranes because it can control the pore size in the resulting silica matrix. In addition, another way to build membrane size can be done by adding catalysts and precursors to be used. In this study, using a combination of tetraethyl ortho silicate (TEOS) and triethoxy vinyl silane (TEVS) precursors and citric acid as a catalyst to produce a silica matrix with mesoporous size so that it is suitable for application in the desalination process. The organo silica membrane was calcined at 350 ° C for 1 hour using the RTP calcination technique under vacuum, thus preventing the decomposition of carbon in the silica matrix. The membrane was dipcoated 4 times to obtain 4 layers. The FTIR (Fourier-transform Infrared Spectroscopy) test was carried out to see the functional groups on xerogel, namely silanol, siloxane and carbon. In addition, the performance of this membrane is carried out by desalination through pervaporation using 0.3% NaCl feed water with variations in feed air temperature, namely 25 ℃, 40 ℃ and 60 ℃. The resulting flux of air value increased with increasing feed water temperature, namely 6.1; 11.2; and 12.1 kg.m-2h-1 while the resulting salt rejection was 99.72; 99.64 and 99.23%. So that the organo silica membrane is suitable when applied to the desalination process through pervaporation.  
Co-Authors Adi Darmawan Anna Sumardi Aptar Eka Lestari Aulia Noor Ikhsan Aulia Rahma Dwi Rasy Mujiyanti Linda Suciwati Muthia Elma Ulfah Delvianti Yanti Mawaddah Yaya Azmiati Zaini Lambri Assyaifi