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Effect of Low Solid/Liquid Ratio on Hydrothermal Synthesis of Hydroxyapatite with Green Template from Banana Flower (Musa acuminata Cavendish) Ferli Septi Irwansyah; Alfi Ikhlasul Amal; Eko Prabowo Hadisantoso; Atiek Rostika Noviyanti; Diana Rakhmawaty Eddy; Azman Bin Ma'Amor; Risdiana Risdiana
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 10, No 1 (2023): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v10i1.25262

Abstract

Hydroxyapatite (HA) was successfully synthesized using the hydrothermal method. This study aimed to analyze the effect of a low solid/liquid ratio on the properties of HA crystals. HA synthesis was performed using chicken eggshells and the hydrothermal method at a temperature of 150°C. The solvent amount was kept constant, while the solid amount varied (half-reaction). The characteristics of HA were determined using XRD, FTIR, PSA, and SEM. The results showed that the purity and size of HA were influenced by a low solid/liquid ratio, while the crystallinity remained relatively unchanged, directly impacting the lattice parameter value. FTIR analysis revealed the absence of the O-H group in the sample with the low solid/liquid ratio. PSA results showed a smaller particle size of 0.995 µm for the sample with the low solid/liquid ratio. SEM results demonstrated a smaller particle size in the sample with a low solid/liquid ratio when observed at the same magnification
How to Read and Determine the Specific Surface Area of Inorganic Materials using the Brunauer-Emmett-Teller (BET) Method Irwansyah, Ferli Septi; Amal, Alfi Ikhlasul; Diyanthi, Erlinda Widyasmara; Hadisantoso, Eko Prabowo; Noviyanti, Atiek Rostika; Eddy, Diana Rakhmawaty; Risdiana, Risdiana
ASEAN Journal of Science and Engineering Vol 4, No 1 (2024): AJSE: March 2024
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v4i1.60748

Abstract

The specific surface area of inorganic materials is a crucial parameter that influences their performance in various applications. The Brunauer-Emmett-Teller (BET) method is widely used for accurately determining the surface area of porous materials. This study presents a comprehensive guide to determining the specific surface area of inorganic materials using the BET method. The paper outlines the theoretical background of the BET method, the experimental procedures involved, and the data analysis techniques. Additionally, we discuss the limitations and potential sources of errors in the BET method. The proposed guide aims to provide researchers and practitioners with a systematic approach to accurately measure the specific surface area of inorganic materials, enabling informed decision-making and enhancing material design and optimization processes.
Hydroxyapatite as Delivery and Carrier Material: Systematic Literature Review with Bibliometric Analysis Noviyanti, Atiek Rostika; Adzkia, Qurratu Aini Alya; Novella, Indrika; Kurnia, Irwan; Suryana, S.; Ma'Amor, Azman Bin; Irwansyah, Ferli Septi
ASEAN Journal of Science and Engineering Vol 4, No 2 (2024): AJSE: September 2024
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v4i2.70223

Abstract

Hydroxyapatite (HA), a bioactive calcium phosphate compound, has garnered significant attention in biomedical and pharmaceutical research due to its remarkable properties as a delivery and carrier material. This review aims to comprehensively analyze the extensive research surrounding HA's applications in drug delivery and as a carrier for various therapeutic agents, encompassing various studies from scientific articles focusing on HA-based systems designed for drug delivery, tissue engineering, and other therapeutic applications. The review also investigates the HA synthesis and modification methods for tailored drug release profiles, as well as the interaction between HA and bioactive molecules. Key findings from the review include the versatility of HA as a biocompatible carrier, its ability to facilitate controlled drug release, and its potential to enhance tissue regeneration. The review identifies trends in HA-based delivery systems, highlighting recent advances and emerging research directions, as well as providing valuable insights into the current state of HA-based drug delivery and carrier materials, shedding light on the potential of HA to revolutionize the field of biomedicine. It serves as a valuable resource for researchers, clinicians, and pharmaceutical professionals seeking to harness the capabilities of HA in developing innovative therapeutic strategies.
PERANAN EDUKASI PENERAPAN PROTOKOL KESEHATAN DAN PERCEPATAN TARGET VAKSINASI DI DESA BANJARAN, KABUPATEN BANDUNG TERHADAP KESADARAN PENCEGAHAN VIRUS COVID-19 Noviyanti, Atiek Rostika
DHARMAKARYA: Jurnal Aplikasi Ipteks untuk Masyarakat Vol 12, No 4 (2023): Desember, 2023
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/dharmakarya.v12i4.38532

Abstract

Tingginya jumlah penderita virus Covid-19 di Indonesia, menandakan potensi penularan yang relatif mudah. Kurangnya pemahaman protokol kesehatan di masa pandemi dan rendahnya target vaksinasi diduga menjadi penyebab tingginya penyebaran virus Covid-19 di hampir seluruh kecamatan di Kabupaten Bandung, termasuk Kecamatan Banjaran, khususnya di Desa Banjaran. Hingga akhir tahun 2021 Pemerintah Jabar menargetkan capaian vaksinasi sebesar 70%, namun masih tercatat sebesar 60% untuk Desa Banjaran. Lansia adalah kelompok usia yang belum divaksinasi karena alasan penyakit sistemik, kehalalan vaksin dan efek samping pasca vaksinasi. Program KKN Tematik Kesehatan Masyarakat (PPM) yang diselenggarakan oleh UNPAD-UNICEF yang berlangsung pada tanggal 25 November-25 Desember 2021 melakukan edukasi penerapan protokol kesehatan 3M di SMPN 1 Banjaran dan percepatan sasaran vaksinasi di Desa Banjaran yang bertujuan untuk membantu perangkat desa dan petugas kesehatan Desa Banjaran untuk menekan penyebaran virus Covid-19. Kegiatan PPM dilaksanakan dengan metode hybrid, dengan tiga tahapan kegiatan yang terdiri dari tahap persiapan, tahap pelaksanaan, dan tahap tindak lanjut. Berdasarkan hasil pos test, 77% dari 77 siswa memahami materi protokol kesehatan yang diberikan. Sementara percepatan kegiatan target vaksin tercatat meningkat menjadi sebanyak 36 orang di RW 06 dan sebanyak 67 orang di RW 07.
Yield and Characteristics of Biodiesel as an Impact of Varying Types of Cooking Oil Waste: Rendemen dan Karakteristik Biodiesel sebagai Dampak Variasi Jenis Limbah Minyak Goreng Haryono; Rostika Noviyanti, Atiek; Pramudya Sulaeman, Allyn; Dayu Kusuma, Hersandy; Rahmadona, Nova
Jurnal Kimia dan Rekayasa Vol. 5 No. 1 (2024): Jurnal Kimia dan Rekayasa Edisi Juli 2024
Publisher : Program Studi S1 Teknik Kimia, Fakultas Teknik, Universitas Setia Budi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Increased activity in various sectors causes fuel demand to increase. Therefore, it is necessary to provide renewable alternative fuels. Biodiesel is an alternative fuel for diesel engines that comes from plant oils, animal fats or waste cooking oil. The aim of this research is to study the effect of the type of cooking oil waste on the yield and characteristics of biodiesel in the synthesis of biodiesel with a homogeneous catalyst. Biodiesel synthesis goes through four stages of treatment, namely: purification of waste cooking oil, esterification with a sulfuric acid catalyst, transesterification with a potassium hydroxide catalyst, and biodiesel purification. The types of cooking oil waste vary based on the waste source, in the form of waste oil from frying pans, seafood and fried chicken. The research results showed that biodiesel from waste cooking oil for frying fritters, chicken and seafood was obtained with successive yields of 54.70; 64.25; and 58.11%. The characteristics of biodiesel from each type of cooking oil waste meet the biodiesel quality requirements based on SNI 7182-2015. AbstrakPeningkatan aktivitas di berbagai sektor menyebabkan kebutuhan bahan bakar semakin meningkat. Oleh sebab itu dibutuhkan ketersediaan bahan bakar alternatif yang bersifat terbarukan. Biodiesel merupakan bahan bakar alternatif untuk mesin diesel yang berasal dari minyak tumbuhan, lemak hewan, ataupun limbah minyak goreng. Tujuan dari penelitian ini adalah mempelajari pengaruh jenis limbah minyak goreng terhadap rendemen dan karakteristik biodiesel pada sintesis biodiesel dengan katalis homogen. Sintesis biodiesel melalui empat tahap perlakuan, yaitu: pemurnian limbah minyak goreng, esterifikasi dengan katalis asam sulfat, transesterifikasi dengan katalis kalium hidroksida, dan pemurnian biodiesel. Jenis limbah minyak goreng divariasikan berdasarkan sumber limbah, berupa limbah minyak dari penggorengan gorengan, seafood, dan ayam goreng. Hasil penelitian menunjukkan bahwa biodiesel dari limbah minyak goreng untuk penggorengan gorengan, ayam, dan seafood diperoleh dengan rendemen berturut-turut sebesar 54,70; 64,25; dan 58,11%. Karakteristik biodiesel dari masing-masing jenis limbah minyak goreng tersebut telah memenuhi syarat mutu biodesel berdasarkan SNI 7182-2015.
Evaluation of Mineral-Based Zn-Doped Hydroxyapatite as a Photocatalyst for Methylene Blue Degradation Nisrina, Aniqa; Karya, Teguh; Halim, Riyan; Murniati, Anceu; Hardian, Arie; Gustaman Syarif, Dani; Rostika Noviyanti, Atiek; Jasmansyah, Jasmansyah; Reza, Muhammad
The Journal of Pure and Applied Chemistry Research Vol. 13 No. 3 (2024): Edition September-December 2024
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2024.013.03.7908

Abstract

Methylene blue is a synthetic dye known to be harmful to aquatic environments. Therefore, efforts are needed to minimize methylene blue waste. This study focuses on degrading methylene blue through photocatalysis, a method chosen for its affordability and ease of use. The photocatalyst used is hydroxyapatite (HAp) derived from limestone (CaCO3) doped with zinc ions (Zn2+). This combination enhances the efficiency of breaking down dye molecules in liquid waste. The photocatalytic performance was tested under three variations: solution concentration, contact time, and pH, using an 8-watt UV lamp for specified durations. Solution absorbance was measured using a Shimadzu 1800 UV-Vis spectrophotometer. Optimal conditions for methylene blue photodegradation by Zn-doped HAp were achieved at 67.2% efficiency for 5 ppm concentration, 16.125% for 120 minutes of irradiation, and 34.86% at pH 7. Additionally, the study included an analysis of adsorption isotherm models for concentration variation and kinetic adsorption analysis for time variation. The Langmuir and Temkin adsorption isotherm models were found to be most suitable with an R2 = 1. The photodegradation kinetics model followed pseudo second-order kinetics with an R2 = 0.990.
EVALUATION OF MINERAL-BASED HYDROXYAPATITE/ZnO COMPOSITES AS PHOTOCATALISTS FOR METHYLEN BLUE DEGRADATION Hardian, Arie; Nafisah, Aulia Zakiyatun; Karya, Teguh; Halim, Riyan; Murniati, Anceu; Syarif, Dani Gustaman; Noviyanti, Atiek Rostika; Nurhayati, Mita; Jasmansyah, Jasmansyah; Reza, Muhammad
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 11, No 2 (2024): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v11i2.37886

Abstract

The use of dyes in the textile industry has increased significantly, raising concerns about their potential to pollute the environment and harm human health. Methylene blue is a widely used synthetic dye, necessitating effective methods for its degradation. Photodegradation is a promising approach to decompose dyes into simpler, less harmful compounds. In this study, hydroxyapatite combined with ZnO was employed as a photocatalyst material to enhance photocatalytic performance. The research aims to degrade methylene blue using a Hydroxyapatite/ZnO (HAp/ZnO) nanocomposite through photodegradation. The optimization of the photodegradation process was investigated by varying irradiation time, methylene blue concentration, and pH. The optimum degradation of methylene blue was achieved using 20 mg of HAp/ZnO nanocomposite at an irradiation time of 120 minutes, an initial methylene blue concentration of 5 ppm, and pH 7. Adsorption isotherm modeling revealed that the process followed the Langmuir isotherm model, with a maximum adsorption capacity (qmax) of 0.3353 mg/g. The degradation followed pseudo-second-order kinetics with a reaction rate constant of 4.0026×105 L/mol·s.
Characteristics of Pumice from Cicurug and Its Application as a Bleacher for Crude Palm Oil Haryono; Atiek Rostika Noviyanti; Hersandy Dayu Kusuma; Irwan Kurnia
ETHOS: Jurnal Penelitian dan Pengabdian kepada Masyarakat Vol. 12 No. 2 (2024): (Juni, 2024) Ethos: Jurnal Penelitian Dan Pengabdian Kepada Masyarakat (Sains
Publisher : UPT Publikasi Ilmiah UNISBA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/ethos.v12i2.3537

Abstract

Pumice is relatively abundant in Indonesia, especially in Cicurug District, Sukabumi. Pumice has unique characteristics, so it has the potential to be an alternative bleaching agent or a bleacher for crude palm oil. Bleaching is one of the stages in processing crude palm oil into palm cooking oil. In the cooking oil industry, the bleaching of crude palm oil generally uses bentonite as a bleacher. This research aims to determine the characteristics of pumice and the optimum conditions for the bleaching process of crude palm oil with pumice as a bleacher. The research method consists of pumice activation, activated pumice characterization, degumming of crude palm oil, bleaching of crude palm oil, and analysis of processed palm oil. The results show that the metal oxide composition in activated pumice is dominated by silica (62.99%) and alumina (14.79%) and has a non-uniform pore size distribution. Optimum bleaching conditions are achieved when using 30% pumice and a bleaching temperature of 105 oC for 30 minutes. Under optimal bleaching conditions, pumice can reduce the color brightness level of crude palm oil from 600 to 125 mg/L Pt, or a bleaching power of 79.2%.
Synthesis of Hydroxyapatite-Zirconia Composite and Activity Test as Dental Implant Material Noviyanti, Atiek Rostika; Yashfi, Difa Muhammad; Deawati, Yusi; Maryani, Eneng; Hemzah, Sabila Aulia; Ma’amor, Azman
Chimica et Natura Acta Vol 13, No 1 (2025)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v13.n1.60026

Abstract

Hydroxyapatite (HAp) is one of the bioceramics that is widely used in various fields, one of which is the health sector as a dental implant material. One of the reasons is that hydroxyapatite has good biocompatibility. In this study, natural calcium sources such as eggshell waste were utilized for the synthesis of hydroxyapatite. However, its mechanical properties do not yet meet the requirements as a dental implant material, its modification is usually done by adding other compounds, such as zirconium oxide. Zirconium oxide can be used as a support material because it has good strength, toughness, and durability as a dental implant. Therefore, in this study, a hydroxyapatite-zirconium oxide (HAp-ZrO2) composite was synthesized for dental implant material. This study aims to determine the effect of adding ZrO2 on increasing the mechanical and corrosion resistance of HAp. The research methods include isolation of CaO from chicken eggshells, synthesis of hydroxyapatite, synthesis of HAp-ZrO2 composite, hardness test, and corrosion resistance test. Based on SEM images, the addition of ZrO2 can reduce the level of HAp agglomeration. The addition of ZrO2 to HAp did not significantly affect the increase in HAp hardness since the zirconia phase formed is possibly dominated by the cubic phase. The optimum HAp-ZrO2 composite was obtained with a variation of HAp-90%-ZrO2-10% which showed the highest crystallinity of 75.37% with a crystal size at 10.15 nm with corrosion resistance comparable to pure HAp.
A Review on Hydroxyapatite: Properties, Its Composite, and Its Slow-Release Fertilizers Application Hemzah, Sabila Aulia; Noviyanti, Atiek Rostika; Kurnia, Irwan; Hardian, Arie; Irwansyah, Ferli Septi; Ma’Amor, Azman
Jurnal Kartika Kimia Vol 8 No 1 (2025): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, University of Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v8i1.913

Abstract

Hydroxyapatite (HAp), a natural mineral form of calcium apatite, has recently received significant attention due to its potential application as a slow-release fertilizer. This review aims to comprehensively analyze HA and its composites, focusing on properties, synthesis methods, and nutrient release mechanisms in agricultural applications. HA's high biocompatibility, excellent adsorption capacity, and ability to release nutrients gradually make it an ideal candidate for increasing soil fertility and crop yields. This review also explores the incorporation of other materials, such as urea, carboxylated cellulose, and montmorillonite, to form HA composites, thereby increasing their efficiency as fertilizer. In addition, the environmental benefits of using HA-based fertilizers, such as reduced nutrient leaching and improved soil health, were also investigated. Challenges and future perspectives are also discussed, emphasizing the need for further research to optimize these materials for practical agricultural use. This review highlights the potential of HA and its composites to revolutionize sustainable agriculture by providing a controlled and efficient nutrient release system.
Co-Authors Adhitya Pratama Adzkia, Qurratu Aini Alya Akrajas Ali Umar Akrajas Ali Umar Akrajas Ali Umar Alfi Ikhlasul Amal Alfi Ikhlasul Amal Alfian Nur Firdaus Alfian Raymondo Sinurat Allyn Pramudya Sulaeman Amal, Alfi Ikhlasul Anceu Murniati Anni Anggraeni Anni Anggraeni, Anni Arie Hardian Arini Nurisydayanti Gumilar Asman Asman Asril Pramutadi Andi Mustari Ayu Wanda Marita Azhari Yusuf Azhari Yusuf Azman Bin Ma'Amor Azman Bin Ma'Amor Azmi Prasasti Bambang Prijamboedi Basril Simbarta Tarigan Budi Adiperdana Budiman, Yudha Prawira Cecep Kusmana Chicilia, Novia Claudia Agesti Dani Gustaman Syarif Dani Gustaman Syarif Dayu Kusuma, Hersandy Diana Rakhmawaty Diana Rakhmawaty Diana Rakhmawaty Eddy Dickry Abil Barry Pratama Diding Mandala Putra Dini Fitriani Dini Janati Diyanthi, Erlinda Widyasmara Dzikri T Qodir E Evy Ernawati E. Evy Ernawati Efri Mardawati Eko Prabowo Hadisantoso, Eko Prabowo Eleonora Agustine Engela Evy Ernawati Engela Evy Ernawati Fajar Firmansyah Ferli Septi Irwansyah Firmansyah, Fajar Gabrielle Callista Dwi Putri Gani Abdilah Geofanny S Hutabarat Gerald Tamuntuan Ghaissani Nur Maulani Gustaman Syarif, Dani Halim, Riyan Hanapratiwi, Reinanda HARYONO Haryono Haryono Haryono Haryono Hemzah, Sabila Aulia Hendri Setiawan Hersandy Dayu Kusuma I Nyoman Marsih Iman Rahayu Irwan Kurnia Irwan Kurnia Ismunandar Ismu Iwan Hastiawan Iwan Hastiawan Iwan Hastiawan Jasmansyah, Jasmansyah Juliandri Juliandri Juliandri Kartika Hajar Kirana Karya, Teguh Kurnia, Irwan Laelaturrohmah Laelaturrohmah Lestari, Putri Rizka Lubis, Rubianto A. Ma'Amor, Azman Bin Malik, Yoga Trianzar Maqsudi, Shobir Muntahal Maryani, Eneng Mastuti Widi Lestari Mastuti Widi Lestari, Mastuti Widi Ma’amor, Azman Meliani, Tiara Ayu Mochammad Rizal Mochammad Rizal Mohammad Rofik Usman Muhamad Rozaq Nur Fauzi Muhammad Raihan Gemilang Muhammad Reza Muhammad, Irfan Handi Mukhamad Nurhadi Mukhamad Nurhadi, Mukhamad Nafisah, Aulia Zakiyatun Nisrina, Aniqa Novella, Indrika Nur Akbar Nur Akbar Nur Azizah Ferdiana Nurhayati, Mita Pandu, Rinal Rahmadona, Nova Ratna Kusumawardani, Ratna Reinanda Hanapratiwi Rihan Amila Putri Rinal Pandu Risdiana Risdiana RISDIANA RISDIANA, RISDIANA Rizka Endah Roekmiati Tjokronegoro Roekmiati Tjokronegoro, Roekmiati Rofifah, Sinthia Anis Rubianto A. Lubis Rukiah Rukiah Rukiah Rukiah Rukiah Rukiah Rukiah Rukiah Rukiah Rukiah Rustaman Rustaman S SOLIHUDIN S Solihudin, S S. Suryana Sahrul Hidayat Sarifah Nurjanah Seli Listiani Shariffuddin Bin Md Zain Solihudin Solihudin Solihudin, Solihudin Solihudin, Solihudin Sovia Islamiah Suryana Suryana Syamsiyatul Fajriyah TATI NURHAYATI Titin Siti Fatimah Titin Siti Fatimah Wahyu Safriansyah Walim Lili Yashfi, Difa Muhammad Yati B Yuliyati YATI B YULIYATI Yati B Yuliyati Yati B Yuliyati Yati B Yuliyati, Yati B Yati B. Yuliyati Yati B. Yuliyati Yati B. Yuliyati Yeni Wahyuni Hartati Yoga Trianzar Malik Yudha Prawira Budiman Yuli Andriani YULIANDRI Yusi Deawati Yusi Deawati