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All Journal VALENSI Prosiding Pendidikan Sains Jurnal Riset Kimia Jurnal Litbang Industri Jurnal Zarah Alotrop Jurnal Pendidikan dan Ilmu Kimia Chimica et Natura Acta IJEMS (Indonesian Journal of Environmental Management and Sustainability) Jurnal Katalisator Eksakta : Berkala Ilmiah Bidang MIPA Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Hydrogen: Jurnal Kependidikan Kimia Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Jurnal Litbang Industri Journal Of Research and Education Chemistry (JREC) Jurnal Katalisator Journal of The Indonesian Society of Integrated Chemistry Jurnal Kimia Unand

Rahmiana Zein

Andalas University

Author-ID : 447871

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Other

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MODIFICATION LEAF DREGS OF LEMONGRASS WITH CITRIC ACID FOR Cd(II) REMOVAL Rahmiana Zein; Syiffa Fauzia; Mutiara Suciandica
JURNAL KATALISATOR Vol. 7 No. 1 (2022): Jurnal Katalisator Volume 7 Nomor 1, April 2022
Publisher : LLDIKTI X Sumbar, Riau, Jambi, Kepri

The present research was studied the capability of leaf dregs lemongrass (LDLG) and modified LDLG by Citric Acid (LDLGCA) for Cd(II) removal. The optimum conditions for both biosorbents at pH 5, stirring speed 200 rpm, contact time 60 minutes, and temperature 25 ᵒC. The optimum concentration LDLG was 120 mg/L and 160 mg/L LDLGCA with adsorption capacity 10.63 mg/g and 11.66 mg/g, respectively. Isotherm models revealed that the adsorption of LDLG and LDLGCA followed Langmuir isotherm model with coefficient determination (R2) 0.98 LDLG and 0.93 LDLGCA. Both biosorbents were fitted to pseudo-second-order indicating that adsorption process chemically occurring. Adsorption Cd(II) LDLG spontaneous reactions and exothermic, meanwhile for Cd(II) removal LDLGCA not spontaneous and exothermic. The characterization biosorbents was done using FTIR, XRF, SEM – EDX and BET. The adsorption capacity of both biosorbents decreased after 3 times adsorption-desorption cycles. Applications biosorbents to the real wastewater (Laboratory wastewater) indicated that LDLG can remove Cd(II) up to 46.88 % and LDLGCA reached the peak at 52.14 %. Based on XRF data, the percentage of Cd(II) in both adsorbents increased up to 21.12% for LDLG and 24.04 % for LCGA. The result indicated that Citric Acid was quite effective as modifier for Cd(II) removal.

ISOTHERM, KINETICS, AND THERMODYNAMIC STUDIES FOR ADSORPTION METHYLENE BLUE SOLUTION USING SHRIMP SHELL Suci Wulandari; Hamdhan Fathony; Putri Ramadhani; Deswati; Rahmiana Zein
JURNAL KATALISATOR Vol. 8 No. 1 (2023): Jurnal Katalisator Volume 8 No. 1, April 2023
Publisher : LLDIKTI X Sumbar, Riau, Jambi, Kepri

This research was carried out adsorption of methylene blue dye using shrimp shell (SS) biosorbent. Methylene blue dye is commonly used in the textile and paper industries. Previously, research had been carried out on the adsorption of anionic dyes by shrimp shells, then in this study a batch adsorption was carried out to absorb methylene blue cationic dyes.It is carried out in batches with several parameters to obtain the optimum conditions. Several studies were carried out such as isotherm studies, kinetics and thermodynamics to analyze how the adsorption process occurs. The adsorption process followed the Langmuir isotherm model for the two biosorbents which showed the formation of monolayers, the kinetic model followed the second-order pseudo. The thermodynamic study of shrimp shells showed that the adsorption process was non-spontaneous, endothermic, and increased randomness. FTIR analysis shows that there are electrostatic interactions, cation exchange, and hydrogen bonding. SEM-EDX analysis shows that the pore filling of the biosorbent surface by methylene blue molecules occurs.

THERMODYNAMIC STUDY OF METHYLENE BLUE DYE ADSORPTION USING KAPOK HUSK Hamdhan Fathony; Suci Wulandari; Putri Ramadhani; Rahmiana Zein; Deswati
JURNAL KATALISATOR Vol. 8 No. 1 (2023): Jurnal Katalisator Volume 8 No. 1, April 2023
Publisher : LLDIKTI X Sumbar, Riau, Jambi, Kepri

This research discusses the thermodynamics of methylene blue(MB) adsorption using kapok husk (KH) and kapok huskmodified with citric acid (CA-KH). Both biosorbents obtained thermodynamic results with a negative value of the change in Gibbs energy (∆G), indicating that the adsorption process took place spontaneously, a negative value on enthalpy (∆H), indicating the adsorption process was an exothermic process, and a negative entropy value (∆S) indicating an increase The regular distribution of methylene blue dye on the surface during the adsorption process is proven by the results of SEM photo analysis at 3000x magnification with the distribution of methylene blue dye on the surface of the two biosorbents..

Separation of Anions on Polar Stationary Phases in Hydrophilic Interaction Liquid Chromatography Mayaserli, Dyna Putri; Zein, Rahmiana; Refilda, Refilda; Putra, Adewirli; Toyohide Takeuchi
JURNAL KATALISATOR Vol. 9 No. 1 (2024): Jurnal Katalisator Volume 9 No.1, April 2024
Publisher : LLDIKTI X Sumbar, Riau, Jambi, Kepri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62769/katalisator.v9i1.2859

The need for the detection of anions and cations in various environmental water samples more rapidly with increasing environmental problems and the time it takes the proper method of analysis, is fast, simple, and can provide an accurate assessment. Hydrophilic Interaction Liquid Chromatography (HILIC) is a highly precise technique for separating polar compounds or hydrophilic compounds. Various places have been making a lot of market columns and columns designed specifically for HILIC. For that to be done selection of the appropriate column to separate compounds primarily for separating anions using polar aminopropyl silica stationary phases, HILIC imidazole, pyridine, and Polar Amide-80. Polar stationary phases are best to separate the anions are aminopropyl silica (NH2-60) because it can separate the anions without adding salt. While Polar pyridine can separate anions at low pH (4.2) using acidic stationary phases and at low pH Polar pyridine can serve as an ion exchanger (ion exchange) Keywords: polar stationary phase, HILIC, ion exchange chromatography

Co-Authors -, Raisha Mashelina -, Yefrida Abdi Dharma Adewirli Putra Admi Admi Admi Admi Afriani, Dian Rizky Agung Abadi Kiswandono Aiwa Putra, Zaki Arianti, Yuliana Armaini - Chessia Nodifa Putri Deliza, Deliza Deswati Deswati Deswati Dheasy Gustira Dheasy Gustira Dwi Syukur Phameswari Edison Munaf Edison Munaf Edison Munaf Edison Munaf Elida Mardiah Emil Salim Emriadi - Fauzia, Syiffa Fitri Mairizki Fivi Mona Bareno Girsang, Ermi Hamdhan Fathony Harza Dipajana Umardi Harza Dipajana Umardi Hasanah, Qomariah Hermansyah Aziz Hermansyah Aziz Hevira, Linda Ilahi, Fitratul Imelda Imelda Imelda Imelda Imran Nazar Indrawati - Indrawati Indrawati Jihanul Khaira Jihanul Khaira Lee Wah Lim Linda Hevira Linda Hevira Marliani, Indah Tika Matlal Fajri Alif Mayaserli, Dyna Putri Megita Febiola Mutiara Suciandica Neneng Swesty Nofita, Dewi Norman Ferdinal Novesar Jamarun Novsimapera, Gatri Nurul Afifah Nurul Annisyah Prestica, Yona Putri Ramadhani Putri Ramadhani Putri Ramadhani Putri Ramadhani, Putri Putri, Reza Audina Qomariah Hasanah Raihan Hanif Aulia Refilda Refilda Refinel - Risa Oktaviani Riza Nurafni Safni Safni Salsa Nurul Fadhilah Sofyan Sofyan Suci Wulandari Sumaryati Syukur Suryati Suryati Swesty, Neneng Syafrizayanti Syafrizayanti Syiffa Fauzia Syiffa Fauzia Syiffa Fauzia Syukri Syukri Teti Nurhayatul Rahmi Tio Putra Wendari Tommi Hermansyah Toyohide Takeuchi Upita Septiani Upita Septiani Wellia, Diana Vanda Wilda Putri Suhada Wilda Putri Suhada Yefrida Yefrida Yetria Rilda Yuliana Arianti Yulizar Yusuf Yunazar Manjang Yunazar Manjang Zilfa Zilfa Zilfa, Z. Zulfi Zulfi Zulkarnain Chaidir

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