Garam merupakan komoditas penting yang banyak digunakan secara luas dari kepentingan konsumsi sampai dengan industri. Salah satu faktor utama yang menentukan keberhasilan produksi garam ini adalah kesesuaian lokasi produksi garam. Hanya saja, belum ada metode yang dapat digunakan sebagai acuan dalam penentuan tingkat kesesuaian lokasi produksi garam. Penelitian ini bertujuan untuk menyusun Indeks Kesesuaian Garam (IKG) untuk menganalsis kesesuaian lokasi produksi garam. Dalam penelitian ini, IKG digunakan untuk menganalisis lokasi produksi garam di Kabupaten Tuban dan Kabupaten Probolinggo, Jawa Timur. IKG disusun berdasarkan sembilan parameter kesesuaian yang terdiri dari curah hujan, permeabilitas tanah, jenis tanah, lama penyinaran, kelembapan udara, kecepatan angin, suhu udara, tingkat penguapan dan tingkat kejenuhan air bahan baku. Hasil penelitian ini menunjukkan bahwa nilai IKG lokasi produksi garam di Kabupaten Tuban (Desa Leranwetan) adalah sebesar 86,84 % yang mengindikasikan kalau lokasi ini sudah sangat sesuai untuk produksi garam. Nilai IKG lokasi produksi garam di Kabupaten Probolinggo (Desa Kalibuntu) adalah sebesar 81,57% yang mengindikasikan lokasi ini cukup sesuai sebagai lokasi produksi garam. Studi ini melaporkan untuk pertama kali metode yang dapat digunakan untuk menganalisis tingkat kesesuaian lokasi untuk produksi garam.
Water quality and waste management are significant problems for aquaculture in Indonesia, including catfish (Clarias gariepinus) aquaculture. A combination of Aquaponics Systems and Recirculating Aquaculture Systems (A-RAS) has been developed to address this problem. This study analyzed A-RAS application for catfish (Clarias gariepinus) aquaculture by comparing water quality and production indicators between A-RAS and conventional methods. The results show that temperature, pH, dissolved oxygen, total organic matter, ammonia, nitrate and nitrite in A-RAS technology were 28.0-30.0°C, 6.5-7.9, 3.8-7.8 mg/L, 18.54-24.97 mg/L, 0.12- 0.28 mg/L, 0.12-0.13 mg/L, and 0.04-0.13 mg/L, respectively. Survival Rate, Feed Conversion Ratio, and harvest in A-RAS application were 85.5%, 1.1, and 26 kg/m³, respectively. A-RAS technology can maintain water quality to be reused in cultivation and increase yields by about 13%. Besides, water spinach can be an additional income for farmers.
One of the biggest challenges in sea salt production is unpredictable and unsuitable weather. Sea salt production process is very depended on the evaporation rate of sea salt production and it will be stopped in the rainy season. One of the alternative strategies to solve this problem is the application of greenhouse salt crystallization in sea salt production. This study aims to develop the technology to produce sea salt in the rainy season by applying Continuously Dynamic Mixing Method (CDM) in the Greenhouse Sea Salt Tunnel (GST). The application of CDM in the GST is an original innovation developed by the researchers of this study. Environmental parameters analyzed in the present study were daily temperatures, wind speed, evaporation rate, humidity, and Baumé scale value. The quality of the produced sea salt was evaluated from the water and NaCl content. The results of this study indicate that the application of the CDM method in GST makes the sea salt production from the raw water materials (± 2° Be) can be conducted in the rainy season. The optimum water and NaCl content of the produced sea salt is 98.05 % and 7 %, respectively. The production of sea salt for one cycle (15 days) in this study is 300 kg/GST-Crystallization (44 m 2 ). According to the results, the CDM method in the GST technology may improve the production of the sea salt in the rainy season and allow it to produce sea salt throughout the year. Abstrak Salah satu tantangan terbesar dalam produksi garam adalah kondisi cuaca yang tidak menentu ataupun tidak mendukung proses pengkristalan garam. Proses pembuatan garam yang sangat tergantung pada laju evaporasi membuat produksi garam akan berhenti pada musim hujan. Strategi pengoptimalan laju evaporasi dengan menggunakan rumah kristalisasi garam berkembang menjadi salah satu alternatif metode untuk mengatasi permasalahan tersebut. Studi ini bertujuan untuk mengembangkan teknologi produksi garam di musim hujan dengan menerapkan metode Continuously Dynamic Mixing (CDM) pada rumah kristalisasi berbentuk Greenhouse Salt Tunnel (GST). Penerapan metode CDM dalam teknologi GST merupakan inovasi teknologi yang dikembangkan khusus oleh peneliti dalam studi ini. Parameter lingkungan yang diteliti terdiri dari suhu harian (air dan udara), kecepatan angin, laju penguapan, kelembaban udara dan nilai skala Baumé dari air bahan baku garam. Kualitas produksi garam dievaluasi berdasarkan kandungan air dan kandungan NaCl. Hasil penelitian ini mengindikasikan kalau penerapan metode CDM pada GST membuat produksi garam yang dimulai dari air muda (± 2° Be) dapat dilakukan pada musim hujan. Garam yang dihasilkan berwarna putih dengan kandungan NaCl dan kadar air, secara berturut-turut, adalah 98.05 % dan 7 %. Hasil produksi garam per siklus produksi dalam musim hujan (15 hari) sebesar 300 kg/GST-Kristalisasi (luasan 44 m 2 ). Berdasarkan hasil penelitian, metode CDM pada teknologi GST membuat produksi garam pada musim hujan sehingga produksi garam dapat dilakukan sepanjang tahun. Cite this as: This is an open access ar...
In order to evaluate the accumulation of high phosphorus and the distribution on macrophytes part, the experiment was conducted by arranged vegetated and unvegetated treatment in a greenhouse experiment. Reactor containing 5L of phosphorus solution (50 or 500 mg/L), 4 kg of sediment and plants (Phragmites australis or Eichhornia crassipes) were prepared. The studied concentrations tried to stimulate an accumulation of Total Phosphorus (TP) in plants. Water were sampled every 5 days during 30 days of experiments while sediment and plant samples (roots, submerged leaves and aerial leaves) were collected at the beginning and at end of this study. Relative growth rate (RGR) of plants was determined considering initial and final plant height. As results, more than 60% of TP was removed by P. australis and E. crassipes from the water. Both P. australis and E. crassipes has great capability to accumulated TP in their tissues, submerged part of leaves accumulated highest TP than other part, due to directly contact with water. RGR was positive suggested both plant able to tolerance TP in high concentration. P. australis was accumulated higher TP than E. crassipes. Therefore P. australis is suitable for phytoremediation practice, being capable to tolerate high TP concentration.
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