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All Journal Prosiding Seminar Nasional Teknik Lingkungan Kebumian SATUBUMI Jurnal Penelitian Hasil Hutan
Ningrum, Mutia Herni
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Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Environmental Science Materials Science & Nanotechnology

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Optimalisasi Produksi Kayu Hutan Alam Melalui Dua Teknik Penebangan Ningrum, Mutia Herni; Yuniawati, Yuniawati
Jurnal Penelitian Hasil Hutan Vol. 41 No. 1 (2023): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jphh.2023.677

Abstract

The need for raw materials for logs increases every year but there is not followed by the supply of raw materials for wood from natural forests. Therefore, it is necessary to optimize the production of natural forest wood. This research aims at optimize the production of natural forest logged timber by using two felling techniques. The research method is analyzing data using the simplex linear programming method on POM For Windows 3 software. The research was carried at one forest concession company the IUPHHK-HA in East Kalimantan. The results showed that felling productivity with improved techniques can increased to 3.35 m3/hour and the average cost of production to a minimum of IDR 3,683.91/m3 Felling improved techniques can increase wood production to an optimal of 7.83 m3/tree so that wood production will be obtained by 39.652 m3/day. Each additional productivity input of 1 m3/hour will increase wood production by 0.348 m3/hour. The timber waste from the analysis results is not optimal.
Analisis Kadar Logam Berat Kromium (Cr) dalam Air dan Ikan Akibat Pembuangan Limbah Industri Penyamakan Kulit di Sungai Opak, Piyungan, Bantul, Daerah Istimewa Yogyakarta Jati, Erwika Dora; Murti, Sigit Heru; Susilo, Bowo; Amru, Khaerul; Ningrum, Mutia Herni; Fahmi, Said
Prosiding Seminar Nasional Teknik Lingkungan Kebumian SATU BUMI Vol 5 No 1 (2023): PROSIDING SEMINAR NASIONAL TEKNIK LINGKUNGAN KEBUMIAN (SATU BUMI) KE-V
Publisher : UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/psb.v5i1.11674

Abstract

Sungai Opak merupakan sungai besar di Yogyakarta yang melintasi banyak kawasan industri salah satunya adalah kawasan industri Piyungan. Sejak tahun 2012, jumlah industri Piyungan yang menggunakan logam berat semakin meningkat terutama industri penyamakan kulit. Hal ini, berdampak langsung terhadap Sungai Opak sebagai tempat pembuangan air limbah. Penelitian ini bertujuan untuk mengukur kadar kromium (Cr) di dalam air dan ikan pada Sungai Opak. Pengambilan sampel didasarkan pada metode purposive sampling. Analisis kandungan logam kromium pada air dan ikan menggunakan AAS (Atomic Absorption Spectrophotometer). Lokasi pengambilan sampel ditentukan berdasarkan prioritas yang disusun berdasarkan jumlah dan jenis kegiatan serta distribusi sumber dan jenis pencemar. Parameter yang diukur terhadap 5 jenis titik pengambilan sampel meliputi kromium pada air dan kromium pada ikan. Hasil penelitian menunjukkan bahwa kandungan kromium pada ikan tidak melebihi baku mutu, sedangkan 2 dari 5 titik sampling air memiliki kandungan kromium sebesar sebesar 0,08 dan 0,55 mg/L yang melebihi baku mutu air.
Co-Authors Amru, Khaerul Bowo Susilo Fahmi, Said Jati, Erwika Dora Sigit Heru Murti Yuniawati Yuniawati