Article Per Year (5 Year)
p-Index From 2019 - 2024
0.23
P-Index
This Author published in this journals
All Journal VALENSI Jurnal Penelitian dan Pembelajaran IPA Chimica et Natura Acta
Ali Kusrijadi
Departemen Kimia Fakultas Matematika Dan Ilmu Pengetahuan Alam Universitas Pendidikan Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Materials Science & Nanotechnology

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Silver Recovery from X-ray Film Waste by Leaching and Precipitation Method Using Sodium Hydroxide and Sodium Sulfide Soja Siti Fatimah; Wiwi Siswaningsih; Ali Kusrijadi; Fikri Aziz Shalahuddin
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 6, No. 1, May 2020
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (574.547 KB) | DOI: 10.15408/jkv.v6i1.13648

Abstract

Silver recovery research from x-ray film waste by leaching and precipitation method using NaOH and Na2S aims to determine the optimum conditions in silver recovery. The parameters optimated in this study were the concentration of the precipitants, leaching temperature and the effect of the type of precipitants on the precipitated time. The results showed that the NaOH and Na2S precipitants were able to recover silver optimally at a concentration of 1.5 M. The optimum leaching temperature of the film with the Na2S precipitant to recover silver was at 25oC, whereas in the NaOH precipitant the film leaching temperature only affected the time of precipitation. Therefore, the formation of precipitate using Na2S is more efficient than NaOH, but the acquisition of silver is better to use NaOH than Na2S.
MIKROENKAPSULAT MINYAK BELUT (Monopterus albus) BEROMEGA-3 SEBAGAI FORTIFIKAN KEJU COTTAGE Florentina Maria Titin Supriyanti; Devita Putri Herwiandani; Ali Kusrijadi
Chimica et Natura Acta Vol 3, No 2 (2015)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (448.549 KB) | DOI: 10.24198/cna.v3.n2.9188

Abstract

Minyak belut merupakan salah satu sumber asam lemak tak jenuh ganda atau polyunsaturated fatty acid (PUFA). Penelitian ini bertujuan untuk fortifikasi keju cottage menggunakan mikroenkapsulat minyak belut. Metode yang digunakan pada penelitian ini meliputi mikroenkapsulasi freeze drying dan karakterisasi produk mikroenkapsulat yang meliputi penentuan formulasi terbaik, rendemen, ukuran mikrokenkapsulat, efisiensi mikroenkapsulat, dan kadar air. Keju cottage hasil fortifikasi dengan mikroenkapsulat minyak belut dianalisis kandungan asam lemaknya dengan GC-MS, dan tingkat kesukaan dengan uji hedonik. Berdasarkan hasil penelitian didapat kandungan omega-3 pada minyak belut sebesar 11,26%. Formulasi terbaik bahan penyalut pada produksi mikroenkapsulat minyak belut adalah, maltodekstrin : gum arab 5:1 ; rendemen 74% b/b; ukuran mikroenkapsulat 10-50 μm; efisiensi mikroenkapsulat 64 % dan kadar air mikroenkapsulat 1,03%. Berdasarkan uji hedonik yang dilakukan, didapat bahwa keju cottage terfortifikasi 10% memiliki tingkat kesukaan warna dan tekstur yang tertinggi. Hasil GC-MS menunjukkan bahwa kandungan asam lemak omega-3 pada keju cottage terfortifikasi minyak belut yang terukur sebesar 6,42%.
GAMBARAN LEVEL SUBMIKROSKOPIK UNTUK MENUNJUKKAN PEMAHAMAN KONSEP SISWA PADA MATERI PERSAMAAN KIMIA DAN STOIKIOMETRI Robby Zidny; Wahyu Sopandi; Ali Kusrijadi Kusrijadi
Jurnal Penelitian dan Pembelajaran IPA Vol 1, No 1 (2015): Available Online in November 2015 (Web of Science Indexed)
Publisher : Department of Science Education, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (514.644 KB) | DOI: 10.30870/jppi.v1i1.326

Abstract

Co-Authors Devita Putri Herwiandani Fikri Aziz Shalahuddin Florentina Maria Titin Supriyanti Robby Zidny Soja Siti Fatimah Wahyu Sopandi Wiwi Siswaningsih