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All Journal Journals Mining Engineering : Bina Tambang Jurnal Periodic Jurusan Kimia UNP Sainstek Jurnal Riset Kimia SEMIRATA 2015 Indonesian Journal of Chemical Science Indonesian Journal of Chemistry JURNAL EKSAKTA PENDIDIKAN (JEP) JURNAL PENDIDIKAN TAMBUSAI Menara Ilmu Jurnal Farmamedika (Pharmamedica Journal) Pelita Eksakta Sainstek : Jurnal Sains dan Teknologi Molluca Journal of Chemistry Education (MJoCE) Hydrogen: Jurnal Kependidikan Kimia PRIMER (Prima Medical Journal) CHEDS: Journal of Chemistry, Education, and Science Jurnal Pijar MIPA MASALIQ: Jurnal Pendidikan dan Sains Menara Pengabdian Jurnal Pengabdian Pada Masyarakat Gudang Jurnal Multidisiplin Ilmu Jurnal Sains dan Kesehatan Jurnal Pendidikan Kimia, Fisika dan Biologi
Edi Nasra
Universitas Negeri Padang
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Optimasi Penyerapan Anion Klorida Menggunakan Silika Gel (SiO2) GPTMS Dimodifikasi dengan Dimetilamina Nur Hafni Hasibuan; Budhi Oktavia; Edi Nasra; Desy Kurniawati
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.116185

Abstract

Ion chloride (Cl-) is an anion that can combine with several cations to form a water-soluble salt. High chloride content in water can accelerate the rusting process on metal. So that in this research the aim is to determine the optimum conditions for the absorption of chloride anions using silica. Adsorption using silica is able to absorb anions. However, modifications are needed to improve silica adsorption. In this study, Dimethylamine was used as a modifier and Glisidoxypropyltrimethoxysilane as a bridge between silica and dimethylamine. To determine the changes in the functional groups of silica, silica-GPTMS, silica-GPTMS DMA, and silica-GPTMS DMA with chloride ions, the FTIR test was carried out. The absorption step was carried out by varying the pH (6,7,8,9, and 10), contact time (30,60,90,120, and 150 minutes), and concentration (5, 10, 15, 20, and 25 mg/L). . The results showed that the optimum conditions for absorption occurred at pH 7, contact time of 120 minutes, and a concentration of 20 mg/L with an absorption capacity of 0.250825 mg/g.
Studi Kompleks Assosiasi Pb (II) Dengan Penambahan KI dan Rhodamin B Muhammad Satrio Hutomo; Edi Nasra; Syamsi Aini; Hesty Parbuntari
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117111

Abstract

Abstract — Research has been carried out on the study of the Pb(II) association complex using KI and Rhodamine B. This study aims to find the optimum conditions for the Pb(II) association complex such as iodine concentration, solution pH, and Rhodamine B concentration. The measurement method used is the UV spectrophotometry method. -Vis and AAS (Atomic Absorption Spectrophotometer). Pb(II) is reacted with excess iodine to form an anion complex (PbI4)2-. The anion complex formed is then reacted with a Rhodamine B cation complex (RB+ ) to form an association complex [RB]2[PbI4]. The results showed that the optimum condition of iodine for the formation of the anion complex (PbI4)2-  at a time of 2 hours, a concentration of 0.4 M with an absorbance of 0.1069 A at a maximum wavelength of 266 nm. While the optimum conditions for the association complex [RB]2[PbI4]2- occurred at a wavelength of 555 nm with an absorbance of 0.3348 A, pH 5 with an absorbance of 3.4101 A and a concentration of Rhodamine B 0.001% with an absorbance of 2.2798 A. The resulting association complex contacted with Pb(NO3)2- at a concentration of 0.01 ppm succeeded in concentrating by obtaining a concentration of 0.7419 ppm and an absorbance value of 0.0108 A. So that a concentration factor of 74.19 times was obtained.
Pengaruh Massa Adsorben Pada Biosorpsi Ion Logam Cr(VI) Menggunakan Biosorben Selulosa Dari Kulit Durian (Durio zibethinus L.) Roza Herlina; Edi Nasra; Rahadian Zainul; Trisna Kumala Sari
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.118351

Abstract

The metal ion Cr(VI) is a very toxic substance with high solubility so that it can cause pollution to the environment. If the concentration of metal ions Cr(VI) exceeds the limit of 0.5 mg/L can damage ecosystems, the environment, poison living organisms and humans, then a method is needed to overcome the pollution caused by chromium waste. Biosorption is an effective and efficient method. The purpose of this study was to determine the optimum conditions for the absorption and absorption capacity of Cr(VI) metal ions. metal ion Cr(VI) with dihenylcarbazide and H2SO4 will form a purple complex reaction. The maximum wavelength of Cr(VI) ion absorption was obtained at 543 nm. These results obtained optimum absorption conditions at an adsorbent mass of 0.6 grams with an absorption capacity of 12.7506 mg/g.
Pengaruh Jenis Aktivator Terhadap Penyerapan Ion Logam Pb2+Oleh Kulit Buah Matoa (Pometia pinnata) Geita Yulyan Firel; Edi Nasra; Indang Dewata; Umar Kalmar Nizar
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.117006

Abstract

The effect of activation types on the biosorpsion of pb2+ metal ions by matoa peel (Pometia pinnata) has been done. The purpose of this study was focused on the effect of the type of activator on the biosorpsion of pb2+ metal ions by the matoa peel (Pometia pinnata) with chemical activation to determine the technical and condition of the activator according to the matoa peel which can be used as a Pb2+ ion biosorbent. The method used is the batch method. The variables in this study were the type of activator and were characterized using the FTIR and AAS. The results showed that 0.1 M HCl was the best activator characterized by a decrease in % T of functional groups -OH, -CH and C-O which played an important role in the biosorption process, had the best Pb2+ metal biosorption capacity obtained from the AAS results, namely of 0.6462 mg/g with % biosorption 80.6239%.
Optimasi Penyerapan Malachite Green Menggunakan Biosorben Kulit Matoa (Pometia pinnata) dengan Metode Batch Dwi Hartati; Desy Kurniawati; Edi Nasra
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.118255

Abstract

This study aims to determine the optimum conditions for absorption of malachite green dye waste using matoa fruit peel biosorbent (Pometia pinnata) using a batch method with variations in particle size and contact time which will be tested with UV-Vis spectrophotometer instruments. Before being used as a biosorbent, matoa skin was activated first using 0.01 M HNO3. Activation of the biosorbent was carried out to improve the performance of the biosorbent because activation can enlarge the pores and volume of the biosorbent as well as the impurities contained in the biosorbent. The results showed that the optimum conditions for variations in particle size were 106 µm with an absorption capacity of 44.08 mg/g and a contact time of 90 minutes with an absorption capacity of 46.67 mg/g.
Pengaruh pH dan Konsentrasi Terhadap Penyerapan Ion Logam Pb2+ Menggunakan Kulit Buah Matoa (Pometia pinnata) Deva Indriyani; Edi Nasra; Budhi Oktavia; Hesty Parbuntari; Desy Kurniawati
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.117509

Abstract

This research study was to determine the optimum conditions for the absorption of Pb2+ metal ions using the matoa fruit peel (Pometia pinnata) using the batch method with variations in pH, concentration, particle size, contact time and stirring speed. The results of the study showed that the optimum conditions for the absorption of Pb2+ occurred at pH 5, a concentration of 300 ppm with an absorption capacity of 34.015 mg/g. Pb2+ metal adsorption isotherm with matoa skin biosorbent (Pometia pinnata) tends to follow the Freundlich isotherm equation with a determinant coefficient (R) of 1.Keywords : Biosorption, Pb2+ metal, Pometia pinnata, Batch method
Isolasi dan Karakterisasi α-Selulosa Dari Kulit Buah Matoa (Pometia pinnata) Fauzan Aulia Akbar; Edi Nasra; Desy Kurniawati; Deski Beri; Hary Sanjaya
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.117793

Abstract

Cellulose isolation from the matoa fruit peel (Pometia pinnata) has been carried out by means of acid hydrolysis and alkaline hydrolysis. The purpose of this study was to isolate cellulose in the peel of matoa fruit and determine what is the purity level of cellulose contained in the peel of matoa fruit, FTIR is used to identify cellulose functional groups in matoa fruit peel. Results of this study, an yeild of the results of cellulose isolation of matoa peel was 41.3% with the purity level of cellulose of matoa fruit peel of 47.63%. The results of characterization using FTIR are known to have cellulose groups contained in the matoa peel such as -OH, -CH, and C-O groups which are the main functional groups in cellulose.
Pengaruh pH dan Konsentrasi pada Penyerapan Ion Logam Cu(II) Menggunakan Kulit Buah Matoa ( Pometia pinnata ) Berliana Salsabila; Edi Nasra; Hardeli Hardeli; Indang Dewata; Desy Kurniawati
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.117510

Abstract

 One of the effective methods in handling the impact of pollution by copper metal is the biosorption method using matoa peel powder (Pometia pinnata). The purpose of this research is to determine the optimum absorption conditions and the optimum capacity for absorption of copper metal ions (Cu2+) using the batch method with variations in pH, concentration, particle size, contact time, and stirring speed.. The results of the research showed that the optimum conditions for the absorption of Cu2+ metal ions were at pH 5, concentration of 220 ppm, particle size of 180 m, contact time of 90 minutes and stirring speed of 300 rpm was 12,059 mg/g. The adsorption isotherm of Cu2+ metal with matoa skin biosorbent (Pometia pinnata) tends to follow the Freundlich isotherm equation with a determinant coefficient (R) of 0,9992.Keywords — Biosorption, Metal ion Cu2+, pomettia pinnata, Batch method
Pengaruh Waktu Kontak dan Kecepatan Pengadukan Terhadap Penyerapan Zat Warna Methylene Blue Menggunakan Biosorben Kulit Matoa (Pometia pinnata) Mufi Nasda; Desy Kurniawati; Edi Nasra
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.118347

Abstract

Methylene blue is an aromatic hydrocarbon compound or thiazine dye with the chemical formula C16H18N3SCl which is most often used in industry, this cationic dye is very dangerous with a threshold value ranging from 5-10 mg/L in water and is difficult to degrade in the environment because it contains benzene compounds. The purpose of this study was to reduce the impact of methylene blue pollution on the waters. The adsorption method was selected in batches by utilizing plantation waste from matoa fruit peel as an adsorbent in the absorption of MB waste, because it is more effective, inexpensive, and environmentally friendly. Matoa skin contains cellulose and lignin, so it is considered potential to be used as an adsorbent. The results showed that the matoa skin adsorbent was able to adsorb methylene blue dye at an optimum contact time of 120 minutes and a stirring speed of 200 rpm, which was measured using a UV-Vis spectrophotometer at a wavelength of 664 nm.
Studi Kompleks Asosiasi Logam Berat Timbal (Pb) dengan Menggunakan KI dan Methyl Green R, Yoanatul Hasanah; Nasra, Edi; Nizar, Umar Kalmar; Etika, Sri Benti
Periodic Vol 12, No 3 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i3.118451

Abstract

The measurement methods in this study used are UV-Vis and AAS ( Atomic Absorption Spectrophotometer). The Pb(NO3)2 solution is dissolved with excess iodide so that it forms a PbI42- anion complex. This anion complex is then reacted with the cationic dye methyl green forming an association complex [PbI4][MG].The result of this study is that the maximum wavelength of the PbI42- anion complex is at 267 nm with stability time of 2 hours. Then the iodide concentration is 0,333 M with an absorbance 0.795 then the maximum wavelength of the association complex [PbI4][MG] is 636 nm at pH 5 and methyl green concentration is 0.00013% and has a concentration factor 20,39 times.
Co-Authors Adam, Wahyu Ade Elsa Betavia Adia Silvani, Mauline Afriani, Reza Ahmad Raisan R.P Aini, Syamsi Ali Amran Ali Amran Alizar Alizar Alizar, Alizar Amrin . Amrin Amrin Amrin Amrin Ananda Putra Ananda Putra Andini, Namira Tri Anjelia, Mariza Annisa Haqqu Azhma Ulya Bahrizal Bahrizal Bahrizal Bahrizal Bahrizal Bahrizal Bahrizal Bahrizal Bastian, Vadianda Benti Etika, Sri Berlian, Syakhinah Berliana Salsabila Budhi Oktavia Burma, Resna Chairunnisa Chairunnisa Chindikia, Ilmy Cynthia Dela Gustika Della Rosalynna Stiadi Desi Kurniawati Deski Beri Deski Pahdinol Desy Kurniawati Desy Kurniawati Desy Kurniawati Desy Kurniawati DESY KURNIAWATI Desy Kurniawati Desy Kurniawaty Deva Indriyani Devi Lestari Dewi Kristina Dewi Meliati Agustini Dini Anggraini, Dini Dony Yulvi Dwi Hartati Dwi Rahma Doni, Deani Edwina Zainal Eka Yusmita Elvina Elvina Fadhilah Fadhilah Fadilla Yuri Merti Fadli, Sukma Bening Fahilatul Syukro Fajriah Azra Fatimah Jora Fatimah Mutiara R, Siti Fatmawati, Rani Fauzan Aulia Akbar Febbi Rahmayuni Febri Andini Putri Fitri Amelia Fitria, Fadhila Geita Yulyan Firel Haqqu, Annisa Hardeli Hardeli Hardeli Hardeli Hary Sanjaya Hary Sanjaya Hary Sanjaya Hayuni, Sri Heditama, Muhammad Raffi Hendrawansyah Putra Hesty Parbuntari Ikhsany, Diva Indang Dewata Isnaeni Isnaeni Jayawarsa, A.A. Ketut Juli Manda Sari Kalmar Nizar, Umar Kasuma Warda Ningsih, Sherly Khairiyah, Ghina Khalisa Khalisa Laura Dwi Rha Hayu Lismawati, Maya M Bachri Amran M. Iqbal S.G Malinda, Tasya Mauline Adia Silvani Melida Selvita Miftahul Khair Minda Azhar Miranda Dwi Putri Gultom Monika Yulia Mufi Nasda Muhamad Daviya Nur Fauzi Muhammad Farhan Muhammad Patly Muhammad Satrio Hutomo Mulia, Melindra Mutia, Nuraini Cut Nandi, Mila Lusy Tri Nesya Febi Utami Nizar, Umar Kalmar Nofri Yuhelman Nugraha, Putri Nur Hafni Hasibuan Nur Meisinca, Dzulhijjah Nuzulia Yona Oktavia Dewita, Febby Oktria, Wandi Patricia, Popi Pebriani Pebriani Pernadi, Niza Lian Pratama, Rafy Putra, Ananda Putri Fatimah Putri Nugraha Putri, Anisa Dwi Putri, Riska Himaylia Putri, Sinta Eka R, Yoanatul Hasanah Raden Mohamad Herdian Bhakti Rahadian Zainul Rahayu, Yanna Rahmad, Nafisah Yulia Rahmatika, Aljumaatul Rahmi, Fathaniah Raviqa Ranti Septiana Ridho Hermawan Riga Riga Riga, Riga Riva Silvia Romy Dwipa Yamesa Away Roza Herlina Sabrina, Joya Saddam Husein, Saddam Sari, Trisna Kumala Satrio Prinandito Septian Budiman Serli, Salsabilla Putri Sherly Kasuma Warda Ningsih Sherly Kasuma Warda Ningsih Sherly Kasuma Warda Ningsih Sintha Hafizhah Yonel Siti Fatimah Mutiara R Sri Benti Etika Sri Benti Etika Suryani, Okta Sutan M Razali Syamsi Aini Syuhada Yurnas Taufik Hidayat Tessa Faradilla Tri Nandi, Mila Lusy Trihanto Setiadi Trisna Kumala Sari Umar Kalmar Nizar Umar Kalmar Nizar Umar Kalmar Nizar Umar Kalmar Nizar Velly, Aglin Visca Alisia Arianti Wandi Oktria Widya Pasema Yeni, Isra Yeniwati Yeniwati Yollafebrisa Wizul Yollafebrisa Wizul Yulia Mona Liza Yusmaita, Eka Yusuf . Zonalia Fitriza Zul Afkar