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All Journal Journal of Degraded and Mining Lands Management Jurnal Kimia dan Kemasan
Akhmad Rasyid Syahputra, Akhmad Rasyid
Pusat Aplikasi Isotop dan Radiasi – BATAN Jl. Lebak Bulus Raya No. 49, Jakarta Selatan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry

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Pembuatan Komposit Akrilamida-g-Bagas Sebagai Absorben Menggunakan Radiasi Berkas Elektron Syahputra, Akhmad Rasyid; Darsono, Darsono
Jurnal Kimia dan Kemasan Vol. 36 No. 1 April 2014
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (798.989 KB)

Abstract

Salah satu limbah padat dari pabrik gula adalah bagas. Sisa penggilingan gula merupakan bagas yang cukup besar sehingga diperlukan proses lebih lanjut agar limbah tersebut tidak merusak lingkungan. Tujuan studi ini adalah membuat absorben dari limbah bagas dan mengamati perubahan sifat fisik dan kimianya. Pembuatan absorben dilakukan dengan menggunakan radiasi mesin berkas elektron. Proses iradiasi dilakukan dengan variasi dosis 15kGy, 30 kGy, 45 kGy dan 60 kGy. Sifat fisik absorben dapat diamati dengan menggunakan hasil persentase fraksi gel. Sifat kimia absorben diamati dari perbedaan spektrum infra merahnya pada saat sebelum dan sesudah ditambahkan monomer. Hasil yang diperoleh menunjukkan bahwa dosis radiasi yang semakin tinggi pada absorben akan meningkatkan sifat fisik (persentase fraksi gel). Analisis menggunakan spektra Fourier Transform Infra Red (FTIR) menunjukan perbedaan puncak-puncak serapan bagas sebelum dan sesudah ditambahkan monomer. Spektrum Differential Scanning Calorymetry (DSC) komposit hasil iradiasi menunjukkan bahwa iradiasi menyebabkan perubahan titik lebur. 
Performances of phosphate-solubilizing microorganisms on soil chemical properties under different soil characteristics: a meta-analysis Bachtiar, Taufiq; Syahputra, Akhmad Rasyid; Citraresmini, Ania; Nurjayati, Ratih; Hidawati, Hidawati; Rachmawati, Veny; Mulyono, Asep
Journal of Degraded and Mining Lands Management Vol. 11 No. 4 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.114.6351

Abstract

The addition of phosphate-solubilizing microorganisms (PSM) as biofertilizers can improve the quality of soil properties. A meta-analysis study was conducted to analyze the effect of PSM on soil properties. This meta-analysis has analyzed 20 research articles published between 1990 and 2023, which have reported the influence of PSM on soil properties. The value of effect size (ES) Hedges'd of available-P is 3.047 (p<0.001), ES of available K is 2.102 (p<0.001), ES of soil nitrogen (N) is 1.706 (p<0.001), ES of pH is  -2.738 (p<0.001), ES of soil organic carbon (SOC) is 1.087 (p=0.004), ES of N-NH4 is 0.636 (p= 0.013), ES of N-NO3 is 2.643 (p< 0.001), ES of phosphatase is 5.001 (p< 0.001), ES of alkaline phosphatase is 22.956 (p<0.001), and ES of acid phosphatase is 23.104 (p<0.001). The results showed that in terms of phosphate solubility, PSM is more effective on alkaline soils with high SOC content, very high P availability, and a sandy loam texture. PSM is more effective for K solubility on acidic soils, with very high SOC content, high P availability, and a loamy texture. PSM is effective in increasing soil N with acid soil characteristics, low SOC content, moderate available P content, and clay texture. According to this study, the Penicillium fungus ranks second in the fungal group in terms of phosphate solubilization capacity after the genus Azotobacter. The genus Peronospora showed the greatest potential in increasing soil N. In contrast, Burkholderia showed the greatest effectiveness in solubilizing K.
Co-Authors Ania Citraresmini Asep Mulyono Darsono Darsono Hidawati, Hidawati Nurjayati, Ratih Taufiq Bachtiar Veny Rachmawati