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Budhi Oktavia
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Optimasi Adsorpsi Ion Logam Ag+ Pada Silika Gel GPTMS Termodifikasi Gugus Sulfonat Anggraini Mardhatillah, Leonyta; Oktavia, Budhi
Jurnal Pendidikan Tambusai Vol. 7 No. 3 (2023): Desember 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v7i3.10539

Abstract

Tujuan dari penelitian ini adalah untuk mendapatkan kondisi optimum dan kapasitas penyerapan Silika-GPTMS termodifikasi sulfonat dalam mengadsorpsi ion Ag+ serta isoterm adsorpsinya. Proses adsorpsi dilakukan dengan menggunakan metode batch untuk proses adsorpsi dengan variasi pH, waktu kontak, dan konsentrasi. Hasil yang diperoleh sesuai dengan penelitian yang telah dilakukan yang menunjukkan adsorpsi silika gel GPTMS termodifikasi sulfonat terhadap penyerapan ion logam Ag+ pada kondisi optimum pada pH 4, waktu kontak selama 30 menit. Kapasitas penyerapan sebelum modifikasi sebesar 0,7 mg/g pada persentase penyerapan 24%, sedangkan setelah modifikasi kapasitas penyerapan sebesar 1,58 mg/g pada persentase penyerapan 53,7%. Mekanisme adsorpsi ion logam perak menggunakan silika-GPTMS-sulfonat mengikuti persamaan isoterm Langmuir dengan nilai R2 = 0,9646.
Pengaruh Supporting Electrolyte Pada Penentuan Formaldehida Secara Voltametri Siklik Menggunakan Pencil Lead Electrode (PLE) Modifikasi Lapisan Tipis Perak Putri, Yunisa Anugrah; Sari, Trisna Kumala; Oktavia, Budhi; Nizar, Umar Kalmar
Periodic Vol 13, No 1 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i1.124516

Abstract

Formaldehyde was detected electrochemically using a pencil lead electrode modified with a thin layer of silver (Ag/PLE). Modification of the silver thin layer was carried out by sweeping-potential electrodeposition using the cyclic voltammetry method. This study aims to study the response of PLE and Ag/PLE for determination of formaldehyde and also to determine the optimum conditions of the supporting electrolyte used in the measurement of formaldehyde. The results showed that Ag/PLE provided better performance than PLE and 0.1 M KOH was the optimum supporting electrolyte. Measurement of formaldehyde using Ag/PLE electrodes with a concentration of 10 mM of test analyte. The oxidation peak of formaldehyde is present at a potential of 0.054 Volt.
Kondisi Optimum Adsorpsi Ion Logam Ni2+ Oleh Silika gel-GPTMS Termodifikasi Sulfonat Ramadhani, Dwi; Oktavia, Budhi; Kurniawati, Desy; Etika, Sri Benti
Periodic Vol 13, No 2 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i2.124480

Abstract

Silica gel is a compound that has two active sides, namely silanol (Si-OH) and siloxane (Si-O-Si) which have not been effective as adsorbents so modifications are made. Silica gel is modified using monosodium salt 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid which is reacted first with GPTMS (glycidoxypropyltrimethoxysilane) as a connecting bridge to produce sulfonate-modified silica gel-GPTMS adsorbent. The purpose of this modification is that sulfonate-modified silica gel-GPTMS are made to adsorb Ni2+ metal ions under optimum conditions at pH, contact time and concentration. The adsorption process is carried out using the batch method by seeing how much adsorbent adsorption capacity is made against the absorption of metal ions. The characterization used is an FTIR (Fourier Transform-Infrared) spectrophotometer in the analysis of the adsorbent manufacturing process and SSA (Atomic Absorption Spectrophotometry) to see the results of metal ion absorption. The results obtained according to research that has been conducted show the adsorption of sulfonate-modified silica gel-GPTMS against the absorption of Ni2+ metal ions at optimum conditions is at pH 3 and contact time for 45 with absorption capacities of 1.5265 mg/g and 1.5826 mg/g respectively.
Optimasi Adsorpsi Ion Cd2+ Pada Silika Gel – GPTMS (glisidoksilpropoltrimetoksisilan) Termodifikasi Sulfonat Pebriani, Pebriani; Oktavia, Budhi; Nasra, Edi; Riga, Riga
Periodic Vol 13, No 1 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i1.124279

Abstract

Adsorbents that are often used in the adsorption process are silica gels. Silica gel has unique advantages such as being, having ion exchange ability, being stable at high temperatures, not floating on organic solvents, and being easy to modify. But the effectiveness of silica gel adsorption against metal ions is weak, so it needs to be modified on the surface of silica gel. The modifier used is a sulfonate group derived from a 4-amino-5-hydroxy-2,7-naphthalenedisulfonate salt using a glycosidoxypropyltrimethoxysilane linkage (GPTMS). The purpose of this study is to determine the optimum conditions for the Cd2+ ion with variations in pH and contact time. The results of the study obtained optimal conditions for the absorption of the Cd2+ ion at pH 5 and a contact time of 60 minutes.
Adsorpsi Zat Warna Methylene Blue Menggunakan Karbon Aktif Kulit Kelengkeng (Euphoria longan lour) Dengan Metode Batch Harmaiyani, Risky; Amran, Ali; Oktavia, Budhi; Kurniawati, Desy
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.v12i3.118807

Abstract

In Indonesia, longan skin has not been widely used. Longan skin contains lignin which has good absorption ability. The cause of this research is to calculate the finest absorption capability of longan peel activated carbon against methylene blue dye using the batch method. The results confirmed that the optimum absorption ability for the absorption of methylene blue at pH 4, concentration of 600 ppm, and contact time of 120 minutes at a stirring speed of 200 rpm, and a mass of 0.2 grams was 69.0679 mg/g.
Pengaruh pH dan Waktu Kontak Terhadap Adsorpsi Ion Pb2+ pada Silika Gel-GPTMS Termodifikasi Sulfonat Afrilia, Yoni; Oktavia, Budhi; Kurniawati, Desy; Nizar, Umar Kalmar
Periodic Vol 13, No 1 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i1.124343

Abstract

Adsorption is the process of accumulation of atoms or ions in solution on the surface of a solid adsorbent. Silica gel can be used as an adsorbent because it has two groups of active sites, namely silanol (Si-OH) and siloxane (Si-O-Si). The active groups also allow silica to be modified. This modification was made to increase the ability of silica to adsorb ions, one of which is Pb2+ ion. The modifier compound used is a sulfonic salt (4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid) with a glysidoxypropyltrimethoxysilane (GPTMS) linking compound. The modified adsorbents were characterized by FTIR and the absorption results were characterized by AAS. The modified adsorbent was to determine the optimum conditions for adsorption of Pb2+ ions using silica sulfonate. Adsorption was carried out using the batch method. The optimum absorption conditions for Pb2+ metal ions using silica sulfonate were obtained at pH 3, contact time of 45 minutes.
Pengukuran Anion Anorganik Secara Simultan dalam Sampel Air Tanah dan Air Ledeng Menggunakan Kromatografi Ion Amin, Muhammad; Oktavia, Budhi
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.v12i3.126222

Abstract

Ion chromatography is an advanced and highly sensitive form of ion exchange chromatography that can effectively detect ion species, whether organic or inorganic ions. This research study utilized ion chromatography with a suppressed conductivity detection system to separate and measure the concentration of fluoride, chloride, nitrite, bromide, nitrate, phosphate, and sulfate ions in groundwater and tap water samples. The eluent solution used in this separation contained 6.0 mmol/L Na2CO3 and 0.25 mmol/L NaHCO3, which was crucial in ensuring the accuracy and selectivity of the detections. The samples were collected in 3 sub-districts in Ternate City, and the study's findings shed light on the water quality in the area.
Analisis Beberapa Sifat Fisikokimia dari Minyak Goreng Kemasan Hasil Penggorengan Ubi Jalar (Ipomea batatas) Sabrina, Joya; Dewata, Indang; Oktavia, Budhi; Pernadi, Niza Lian; Farhan, Muhammad; Rahmi, Fathaniah Raviqa; Nizar, Umar Kalmar
Periodic Vol 13, No 2 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i2.124356

Abstract

Cooking oil is a biological mixture derived from plants and consists of a mixture of esters derived from glycerol with fatty acids. The most commonly used cooking oil for cooking by the community is palm oil, because it is easy to obtain and the price is relatively affordable. The main composition of palm oil is triglycerides more than 95% and several other components such as monoglycerides, diglycerides, free fatty acids, phosphatides and sterols. Sweet Potatoes have the main content, namely carbohydrates. In addition to carbohydrates, there are other ingredients such as protein and fat. The purpose of this study was to determine the physicochemical properties of packaged cooking oil from sweet potato frying at a certain time and temperature and to use packaged cooking oil without heating as a comparison. The physicochemical properties of the oil determined include density, flow rate, acid number and saponification number. Bimoli cooking oil from sweet potato frying has a density value of 0.9369 gr/ml, a flow rate of 3.662 ml/s, an acid number of 8.143 mgKOH/gr and a saponification number of 14.305 mgKOH/gr. The results of this study indicate that the results of the physicochemical properties test of packaged cooking oil have a better value than the test results of sweet potato frying oil.
Pengaruh pH dan Konsentrasi Terhadapa Penyerapan Ion Logam Besi (Fe) Menggunakan Selulosa Hasil Ekstraksi Dari Kulit Durian (Durio Zibethinus Murr) Burma, Resna; Nasra, Edi; Oktavia, Budhi; Ningsih, Sherly Kasuma Warda
Periodic Vol 13, No 2 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i2.124652

Abstract

Fe(II) Metal Ions are one type of heavy metal that is toxic resulting in pollution in the environment. In waters if Fe(II) ion exceeds the limit of 0.3 mg / L will cause damage to the ecosystem and the surrounding environment, so countermeasures are needed from pollution caused by Fe(II) ions. Biosorption using cellulose biosorbents extracted from durian fruit peel was chosen as one of the efficient methods. The purpose of this study can determine the absorption capacity of durian fruit peel and determine the optimum conditions for absorption of Fe (II) metal ions carried out by batch method with variations in pH and concentration. The optimum pH of Fe (II) metal ion absorption was obtained at pH 5 and an optimum concentration of 250 ppm with an absorption capacity of 4.3 mg / g.
Adsorpsi Ion Ca2+ Menggunakan Adsorben Silika GPTMS Termodifikasi Sulfonat Putri, Reza Athia; Oktavia, Budhi; Alizar, Alizar; Parbuntari, Hesty
Periodic Vol 13, No 2 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i2.124505

Abstract

Silica is a metal oxide compound that is widely found in nature and is used as an adsorbent. Silica has the ability to adsorb ions because it has two groups of active sites that can be modified, namely siloxane (Si-O-Si) and silanol (Si-OH) groups. This modification was made to increase the ability of silica to absorb ions, one of which is the metal ion Ca2+. Silica modification was carried out by adding a bridging compound, namely glycidoxypropyltrimethoxysilane (GPTMS). The purpose of this research was to determine the optimum conditions of pH, contact time, and adsorption concentration of Ca2+ metal ions on sulfonate-modified GPTMS silica using batch method. The filtrate resulting from adsorption was analyzed using an atomic absorption spectrophotometer (AAS). The results showed that the optimum conditions for the adsorption of Ca2+ metal ions by sulfonate-modified GPTMS silica occurred at pH 5, contact time of 60 minutes, and concentration of 20 ppm. The adsorption process of Ca2+ metal ions by sulfonate-modified GPTMS silica follows the langmuir isotherm equation with an absorption capacity of 2.7824 mg/g. The results of the comparison of the absorption capacity of silica after modification obtained greater results than before modification, where the absorption capacity after modification was 2.225375 mg/g with an absorption percentage of 57.17%, before modification the absorption capacity was 1.677275 mg/g, and the absorption percentage was 43.07%.
Co-Authors Afifi, Rayhanil Afrilia, Yoni Ahmad Fauzi Ali Amran Alizar Alizar, Alizar Alsa, Dzakma Putri Amalia Putri Lubis Ananda Putra Andreas Difa Andromeda Anggraini Mardhatillah, Leonyta Anisa Nahari Auzakiyah, Sabella Ayu Azizah Bahrizal Bahrizal Berlian, Syakhinah Burma, Resna Chindikia, Ilmy Deasy Liestianty Delfitri Delfitri Deni Marlina DESY KURNIAWATI Desy Kurniawati Desy Kurniawati Deva Indriyani Devita Efri Dewi Kristina Dipnorita Retno Ditasya, Hellena Dwi Agustini, Dwi Dwi Putri, Vika Trisna DWI RAMADHANI Edi Nasra Elvina Elvina Elvina Yulistia Erwan Fadhilatu Zikra Fajriah Azra Faradila, Putwi Ayu Faradina, Rela Fauzi, Ahmad Firmansyah Khairul Kamal Fitrah Mey Harmi Siregar Fitri Amelia Fitriningsih, Annisa Guspatni Guspatni Habibur Rahman Dafnaz Hafis, Muhamad Hainunnisa Syafitriza Hardeli Hardeli Hardeli Hardeli Hardeli Harmaiyani, Risky Harnas, Dolla Mulyana Hary Sanjaya Hary Sanjaya Hesty Parbuntari Ibrahim Rahmat Illa Ramadhani Indang Dewata Isra Hayati Kauri, Desrike Khairani - Khairani - Latisma Latisma Ma’a, Yustini Maharani, Siska Marthin, Emmilya Febri Masrid Pikoli Maulana, Febrina Mawardi Meri Novia Nurman Miftahul Khair Miftahul Khair Miftahurrahmi, Miftahurrahmi Minda Azhar Muhammad Amin Muhammad Farhan Mulia, Melindra Mutiara Oksyarni Nahdiah Amin Nilu Gussarsi Nizar, Umar Kalmar Nofri Yuhelman Nur Hafni Hasibuan Parbuntari, Hesty Patricia Helena Pebriani Pebriani Pernadi, Niza Lian Putra, Ananda Putri Fatimah Putri Permatasari, Putri Putri, Hanna Salwa Putri, Reza Athia Putri, Yunisa Anugrah Rahadian Zainul Rahardian Z Rahmi, Fathaniah Raviqa Randy Lesmana Putra Rani Sanjaya Reviana Ervita Riga, Riga Rini Anggraini Rita Sundari Rita Sundari Riva Silvia Romy Dwipa Yamesa Away Sabrina, Joya Sari, Trisna Kumala Septya Anggraini Setiowati, Fiqih Sekar Sherly Kasuma Warda Ningsih Sherly Kasuma Warda Ningsih Sintha Hafizhah Yonel Sri Benti Etika Sri Benti Etika Sri Teguh Priharti Suryelita . Syamsi Aini Syifa Rahma Ayunda Syukro, Fahilatul Takdib, Manajer Jurnal Tarmizi Tarmizi Tarmizi Tarmizi Trihanto Setiadi Ulianas, Alizar Umar Kalmar Nizar Umar Kalmar Nizar Usman Bakar Visca Alisia Arianti Vivi Chaniasi Warni Arfin Wirza, Vitratul Yani Puspita Yani Yanti, Desvila Ramadha Yerimadesi Yona, Nuzulia Rahma yuda pratama Yulia Mona Liza Yunisya, Dinda Yustini Ma’a Zulmariko