Jurnal Sains & Teknologi Lingkungan https://journal.uii.ac.id/JSTL <p style="text-align: justify;">Jurnal Sains &amp; Teknologi Lingkungan (JSTL) published twice a year in January and June is a scientific journal that publishes scientific research papers and ideas in the field of science and technology related to environmental issues. The journal covers typical subjects of environmental sciences and technologies such as.: Drinking water treatment, wastewater treatment, solid waste treatment, solid waste management, cleaner production, air pollution management, resource recovery, water pollution, soil contamination, and other relevant fields.</p> en-US <p>Authors who publish with this journal agree to the following terms:</p><ol type="a"><li>Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a <a href="http://creativecommons.org/licenses/by-sa/4.0">Creative Commons Attribution License</a> that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</li><li>Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.</li><li>Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See <a href="http://opcit.eprints.org/oacitation-biblio.html" target="_new">The Effect of Open Access</a>).</li></ol> eko_siswoyo@uii.ac.id (Eko Siswoyo, Ph.D) noviani.ima@uii.ac.id (Noviani Ima Wantoputri, S.T., M.T.) Thu, 30 Jun 2022 00:00:00 +0000 OJS 3.3.0.10 http://blogs.law.harvard.edu/tech/rss 60 IMPACT OF TIN MINING ON SOIL PHYSIO-CHEMICAL PROPERTIES IN BANGKA, INDONESIA https://journal.uii.ac.id/JSTL/article/view/23823 <p><em>Surface mining, including tin mining, is the most common mining practice in Indonesia. The existence of mining ore or minerals close to the surface soil is the reason for carrying out this mining method. The process of mining surface resulted in the change of land landscape, which may cause soil erosion and even flood. It has caused various ecological and environmental problems, including soil degradation. This study describes soil physio-chemical properties impacted by surface tin mining in Bangka, Indonesia. Soils were collected from three different land use in natural forest, agroforestry, and post tin mining area in Bangka Regency, Province of Bangka Belitung Island. Five-spot soils were sampled from each site. Each site had three replication of the sampling area. The plot size for each site is about 200-500 m2. Soil texture, pH, total N, available P, exchangeable K, organic carbon, C/N ratio, CEC, Al<sup>3+</sup>, and H<sup>+</sup> were analyzed. The results showed that mining decreased organic carbon, total N, available P, exchangeable K, and CEC. Mining changed the soil texture to be dominated by quartz sand. These results indicate that mining significantly deleterious soil fertility, therefore, potential as a limiting factor for plant growth, which could be a hamper for restoration efforts of post tin mining areas.&nbsp;</em></p> <p>&nbsp;</p> <p><strong>Keywords</strong><em>: tin mining, restoration, soil physiochemical properties, soil degradation</em></p> <p>&nbsp;</p> Dewi Wulandari, Cahyono Agus, Risa Rosita, Irdika Mansur, Ahdiar Fikri Maulana Copyright (c) 2022 https://journal.uii.ac.id/JSTL/article/view/23823 Thu, 30 Jun 2022 00:00:00 +0000 KAJIAN PENGARUH LAPISAN MEDIA PADA NON-VEGETATED SWALE SEBAGAI FILTER LARUTAN PUPUK NPK https://journal.uii.ac.id/JSTL/article/view/21404 <p><em>Penggunaan pupuk NPK pada lahan pertanian secara berlebihan </em><em>mengakibatkan </em><em>banyak pupuk</em><em> </em><em>tidak terserap</em><em> </em><em>sehingga </em><em>terbawa </em><em>masuk ke perairan</em><em> oleh limpasan air permukaan saat hujan</em><em> </em><em>dan menyebabkan eutrofikasi.</em><em> U</em><em>nsur hara anorganik</em><em> </em><em>Nitrogen (N) dan Fosfor</em><em> </em><em>(P) </em><em>menjadi nutrisi bagi alga sehingga</em><em> menyebabkan </em><em>tumbuhnya </em><em>alga yang berlebihan pada perairan atau biasa disebut algal bloom.</em> <em>Penelitian ini bertujuan untuk mengkaji seberapa besar pengaruh jenis dan tinggi lapisan media pada non-vegetated </em><em>swale </em><em>dalam menyaring parameter Nitrogen (N) dan Fosfor (P) yang berasal dari larutan pupuk NPK komersial. Metode yang diterapkan adalah dengan menyiramkan aliran air larutan pupuk NPK melalui non-vegetated swale dengan dua ketebalan lapisan yang berbeda. Konsentrasi masuk larutan NPK yaitu 123,77-124,77 mg/l fosfat, 16,54-16,72 mg/l amoniak serta kandungan nitrat dan nitrit yang kecil. Aliran air larutan pupuk NPK sebelum dan sesudah melalui non-vegetated swale diambil sampelnya yang kemudian diuji dengan alat spektrofotometer untuk mengetahui perbedaan kandungan fosfat, nitrat, nitrit dan amonianya. Hasil penelitian menunjukkan bahwa </em><em>kedua non-vegetated swale memiliki kemampuan menyaring konsentrasi fosfat pada larutan air pupuk NPK yang sangat baik, kedua non-vegetated swale mampu mengurangi sekitar 120 mg/l konsentrasi fosfat. Hasil pengukuran nitrat dan nitrit menunjukkan kenaikan sekitar 5 mg/l nitrit dan nitrat, sedangkan kandungan amoniak turun sekitar 16 mg/l. Hal ini menunjukkan terjadinya proses nitrifikasi dan menunjukkan bahwa kedua non-vegetated swale pada penelitian ini memiliki kemampuan penyaringan N yang belum optimal.</em></p> Rizki Zulapriansyah, INTAN SUPRABA, Muhammad Mufti Azis Copyright (c) 2022 Jurnal Sains & Teknologi Lingkungan https://journal.uii.ac.id/JSTL/article/view/21404 Thu, 30 Jun 2022 00:00:00 +0000 PENURUNAN BEBAN PENCEMAR RUMAH POTONG HEWAN (RPH) MENGGUNAKAN SISTEM BIOFILTER ANAEROB https://journal.uii.ac.id/JSTL/article/view/23979 <p><span class="fontstyle0">Rumah Potong Hewan (RPH) di Desa Banyuurip, Kedamean, Gresik belum memiliki fasilitas pengolahan air limbah yang dihasilkannya, sehingga air limbah tersebut langsung dialirkan ke badan air dan menjadi sumber pencemaran air. Tujuan dilakukannya penelitian ini adalah untuk mengetahui efisiensi penurunan konsentrasi COD dan Amonia pada air limbah RPH menggunakan biofilter anaerob dengan variasi waktu tinggal 1,2,dan 3 hari. Penelitian ini dilakukan pada skala laboratorium menggunakan sistem kontinyu dengan reaktor yang terbuat dari kaca berukuran 20 x 20 x 60 cm bermedia bio ring (keramik ring). Reaktor yang digunakan terdiri dari 3 reaktor dengan masing-masing reaktor menyesuaikan variabel yang digunakan. Debit yang dialirkan sebesar 10 L/hari dengan analisis parameter dilakukan setiap hari selama 5 hari untuk masing-masing reaktor. Hasil penelitian<br />menunjukkan bahwa penurunan konsentrasi COD dan amonia tertinggi terjadi pada reaktor 3 hari ke-5<br />dengan efisiensi sebesar 92,22% dan 91,23%. Konsentrasi COD dan Amonia tersebut telah memenuhi<br />baku mutu yang tercantum pada Peraturan Gubernur Jawa Timur Nomor 72 Tahun 2013 tentang Baku<br />Mutu Air Limbah bagi Industri dan/atau Kegiatan Usaha Lainnya.<br /></span><span class="fontstyle2">Kata Kunci: </span><span class="fontstyle0">Amonia, Bioring, COD, Limbah Cair RPH</span> </p> Muhammad Al Kholif, Miftakhul Rohmah, Pungut, Indah Nurhayati, Djoko Adi Walujo, Dian Majid Copyright (c) 2022 https://journal.uii.ac.id/JSTL/article/view/23979 Thu, 30 Jun 2022 00:00:00 +0000 PEMANFAATAN LIMBAH RAJUNGAN (PORTUNUS PELAGICUS) UNTUK MEMPRODUKSI PUPUK ORGANIK CAIR KITOSAN SEBAGAI GROWTH PROMOTOR https://journal.uii.ac.id/JSTL/article/view/22354 <em><span lang="EN-ID">Crab waste (Portunus pelagicus) has the potential to become a more valuable product, namely chitin and chitosan. Chitosan as a plant growth promoter is a natural compound that is biodegradable and non-toxic. Chitosan which is used as liquid organic fertilizer functions as a growth promoter, due to the provision of amino compounds, which can stimulate the initial growth stage. The purpose of this study was to use crab waste (Portunus pelagicus) to isolate and characterize chitosan, then use chitosan as liquid organic fertilizer. Characterization of the FTIR spectrum of chitosan isolated from crab, showing the absorption value of the hydroxyl/amine group (OH-, NH2-) shown at the peak of 3435.54 is 92.17% while the absorption value of the amide/acetamide group (CH3CONH-) at the peak is 1654.67 is 91.16%. And obtained the deacetylation degree of chitosan from crabs ranging from 40.25-79.35%. The use of Liquid Organic Fertilizer-Chitosan as a growth promoter has a significant effect on increasing mass, height, root length, and number of Dayak Onion leaves. Where the optimum concentration of Liquid Organic Fertilizer-Chitosan for Bawang Dayak is 60% (v/v).</span></em> Abdul Kahar , Muhammad Busyairi, Eko Siswoyo, Anggono Wijaya, Dian Nurcahya Copyright (c) 2022 Jurnal Sains & Teknologi Lingkungan https://journal.uii.ac.id/JSTL/article/view/22354 Thu, 30 Jun 2022 00:00:00 +0000