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All Journal Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Jurnal Keramik dan Gelas Indonesia Chimica et Natura Acta Jurnal Keramik dan Gelas Indonesia
Solihudin Solihudin
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Public Health

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Biocomposite of Hydroxyapatite from Chicken Egg Shells and Biochar from Rice Husk As an Adsorbent for Copper Ion and Methylene Blue hendri setiawan; Umi F. Anindi; Dedek Y Pulungan; Nur Akbar; Atiek R. Noviyanti; Solihudin Solihudin
Jurnal Keramik dan Gelas Indonesia Vol 29, No 1 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i1.5912

Abstract

The growth of industrial activity and increasing use of water have effected to the releasing of various pollutants into the waters, as methylene blue and copper ions. Excess levels of methylene blue and copper ions in the waters can cause ecosystem damage. This study aims to obtain biocomposites of hydroxyapatite from chicken egg shells and biochar from rice husk as well as their adsorption ability to inorganic pollutants (Cu (II)) and organic pollutant (methylene blue). Hydroxyapatite (HA) was synthesized by calcining chicken eggshells into CaO powder which is then reacted with (NH4)2HPO4. Furthermore HA was mixed with biochar from rice husk to form biocomposites. The ability of the biocomposite adsorption test was carried out by varying the time and initial concentration of the metal solution and methylene blue. Based on the results of the study, HA-biochar composites showed the best contact adsorbing time for methylene blue and copper ions 50 and 30 minutes respectively. Testing of biocomposite adsorption ability to the initial concentration of methylene blue as much as 12.79 ppm showed that the biocomposite is able to adsorb methylene blue to a residual concentration of 1.15 ppm or the maximum percentage of methylene blue that can be adsorbed by 91%. The ability of HA-biochar composites to adsorb methylene blue is better than its constituent materials (HA and biochar). HA-biochar composites was also able to adsorb Cu ions with an average adsorption percentage of 79.45% from the initial concentration.
Biocomposite of Hydroxyapatite from Chicken Egg Shells and Biochar from Rice Husk As an Adsorbent for Copper Ion and Methylene Blue hendri setiawan; Umi F. Anindi; Dedek Y Pulungan; Nur Akbar; Atiek R. Noviyanti; Solihudin Solihudin
Jurnal Keramik dan Gelas Indonesia Vol 29, No 1 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i1.5912

Abstract

The growth of industrial activity and increasing use of water have effected to the releasing of various pollutants into the waters, as methylene blue and copper ions. Excess levels of methylene blue and copper ions in the waters can cause ecosystem damage. This study aims to obtain biocomposites of hydroxyapatite from chicken egg shells and biochar from rice husk as well as their adsorption ability to inorganic pollutants (Cu (II)) and organic pollutant (methylene blue). Hydroxyapatite (HA) was synthesized by calcining chicken eggshells into CaO powder which is then reacted with (NH4)2HPO4. Furthermore HA was mixed with biochar from rice husk to form biocomposites. The ability of the biocomposite adsorption test was carried out by varying the time and initial concentration of the metal solution and methylene blue. Based on the results of the study, HA-biochar composites showed the best contact adsorbing time for methylene blue and copper ions 50 and 30 minutes respectively. Testing of biocomposite adsorption ability to the initial concentration of methylene blue as much as 12.79 ppm showed that the biocomposite is able to adsorb methylene blue to a residual concentration of 1.15 ppm or the maximum percentage of methylene blue that can be adsorbed by 91%. The ability of HA-biochar composites to adsorb methylene blue is better than its constituent materials (HA and biochar). HA-biochar composites was also able to adsorb Cu ions with an average adsorption percentage of 79.45% from the initial concentration.
Sintesis dan Karakterisasi Nanopartikel Zirkonia Terstabilkan Kalsium (CSZ) Berbasis Prekursor Zirkonium Hidroksida dari Pasir Zirkon Menggunakan Templat Etilen Glikol Hasna Rofifah Novianti; Eneng Maryani; Diana Rakhmawaty Eddy; Solihudin Solihudin; Ferry Arifiadi; Dewi Idamayanti
Chimica et Natura Acta Vol 10, No 2 (2022)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v10.n2.40335

Abstract

Zirkonia yang distabilkan (stabilized zirconia) sangat menjanjikan karena memiliki sifat fisik, mekanik, termal, serta biokompatibilitas yang baik. Penelitian terkini memperlihatkan zirkonia yang distabilkan dapat digunakan pada bidang lingkungan, elektrolit, dan katalis. Zirkonia memiliki tiga fase yang stabil pada rentang suhu berbeda yaitu fase monoklinik, tetragonal dan kubik. Transformasi yang terjadi dari fase tetragonal ke monoklinik menyebabkan terjadinya retak mikro. Zirkonia perlu ditambahkan doping untuk dapat stabil selama pendinginan setelah tahap kalsinasi. Telah dilakukan sintesis zirkonia yang distabilkan dengan penambahan doping CaCl2 sebesar 1, 5 dan 10% b/b serta variasi suhu 600, 800 dan 1000°C untuk melihat pengaruhnya terhadap pembentukan fase ZrO2. Metode yang digunakan pada penelitian ini adalah metode sol-gel sehingga diperoleh calcia stabilized zirconia (CSZ) berukuran nano menggunakan bantuan etilen glikol sebagai templat. Hasil FTIR menunjukkan ikatan Ca-O muncul pada area sidik jari 455,9 cm-1. Ikatan Ca-O ini tumpang tindih dengan ikatan Zr-O pada daerah sidik jari 509,6 cm-1 (m-ZrO2) dan 754,16 cm-1 (t-ZrO2). Pengaruh doping dan suhu kalsinasi terhadap fase pembentukan nanopartikel CSZ dipelajari menggunakan difraksi sinar-X menunjukkan fase tetragonal teridentifikasi pada suhu kalsinasi 800°C dan fase monoklinik teridentifikasi pada suhu kalsinasi 1000°C. Konsentrasi CaCl2 mempengaruhi transformasi fase ZrO2, semakin tinggi konsentrasi CaCl2 yang ditambahkan ke dalam ZrO2 maka semakin stabil fase tetragonal ZrO2 pada sampel CSZ. Hasil morfologi dipelajari menggunakan TEM dan SEM menunjukkan nanopartikel dengan ukuran rata-rata 11-25 nm berbentuk aglomerasi dengan sebagian besar memiliki partikel berbentuk sferik dan sebagian kecil berbentuk nanorod dan nanotube.
RECOVERY PANAS DARI GASIFIKASI SEKAM PADI SEBAGAI MEDIA PENGHANGAT DOC (DAY OLD CHICKS) DI UNIT USAHA DESA PASAWAHAN, GARUT Solihudin Solihudin; Haryono Haryono
Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Vol 12, No 1 (2023): Maret, 2023
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/dharmakarya.v12i1.24454

Abstract

Desa Pasawahan, Kecamatan Tarogong Kaler, Kabupaten Garut memiliki potensi biomassa relatif berlimpah berupa sekam padi. Selain itu, desa tersebut juga memiliki unit usaha peternakan ayam petelur. Pada tahap pembesaran anakan ayam atau Day Old Chicks diperlukan sistem pemanas untuk mengkondisikan udara di kanadang pembesaran anakan ayam tetap hangat. Pemakaian sistem pemanas dengan lampu listrik relatif membebani biaya pemeliharaan ayam. Alternatif potensial untuk mengatasi permasalahan tersebut adalah sistem pemanas dengan memanfaatkan panas dari proses gasifikasi sekam padi. Tujuan program pengabdian kepada masyarakat ini adalah merancang, membuat, dan menginstalasi sistem pengambilan kembali panas gasifikasi sekam padi untuk memenuhi kebutuhan panas sebagai media penghangat anakan ayam. Untuk mencapai tujuan tersebut, dilakukan perancangan peralatan proses dengan metode short cut. Program ini telah berhasil merancang dan membuat peralatan dan sistem proses pengambilan kembali panas gasifikasi dari sekam padi tersebut.
Co-Authors Atiek R. Noviyanti Dedek Y Pulungan Diana Rakhmawaty Eddy Eneng Maryani Ferry Arifiadi Haryono Haryono Hasna Rofifah Novianti hendri setiawan Idamayanti, Dewi Nur Akbar Umi F. Anindi