Judul: Uji Efektivitas Wastetreat ™ Untuk Bioremediasi Logam Berat Dalam Sludge Pabrik Kertas Deinking
Abstrak: Paper play an important role in the modern life. In consequence, the demand of raw material increase in line with the time. To fill the demand, used paper can be utilized after processing to pulp. This process called deinking that will give environment pollution due to high content of metals come from the ink. One of environment solution is employing microbe to degrade the metals. Technology in using microbe to this purpose called bioremediation. One of product use as bioremediation is wastetreat™. The study is aimed to observe whether wastetreat™ can be used to deal with metals content in sludge deinking or not. One kg of the sludge mixed homogenically with 3,5g, 7g, 14g wastetreat™, respectively. The treatment were compare to application of 7ml EM4® and non treatment as is control. Variabel of pH and levels of heavy metals (Cu, Zn, Pb, Ni, and Cr) were measured at each 0, 2, 5, and 8 days of incubation. The result showed that treatment of wastetreat™ does not cause a significant decrease in pH from day to day. As for the reduction of heavy metal content, wastetreat™ in dosage of 14g was the most effective in decreasing heavy metals Cu, Zn, and Pb after 8 days of incubation. Decreased levels 26,4%, 22,1% and 20%, respectively.
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Judul: Analisis Up Take Kandungan Logam Berat dari Kompos Lumpur Water Treatment Plant oleh Tanaman.
Abstrak: Utilization of sludge processing results are very minimal and less noticed by many among the industry. This research aims to identify the feasibility of compost of sludge processing drinking water as a medium for planting, identifying the presence of heavy metals content in the compost that is absorbed in plants, and degrades the contents of heavy metals in sludge by means of fitoremediasi. The method used is the utilization of compost as a medium for planting without WTP mixed soil. On testing using three kinds of different compost WTP. Compost 1 comes from WTP PT. Krakatau Tirta Industry, Cilegon, West Java. Compost 2 comes from WTP PDAM Tirta Pakuan Bogor, West Java. Compost 3 comes from WTP PDAM Tirta Kahuripan Cibinong, West Java. On the third having a lush growth of vegetation and experience the process of degradation the heavy metals. The results of the three trials heavy metal content in plants after harvest showed values above the threshold limit of SNI 7387 in 2009 about The Limit of Heavy Metal Contamination in Food. Composting plant using WTP is not safe for consumption. Degradation of heavy metals in the form of mud at the WTP to harvest heavy metals impaired. This demonstrates the feasibility of the utilization of WTP sludge by composting and application of the growing media. Compost WTP can fertilize the plants, but not for food crops.
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Judul: Karakteristik Anatomi Skelet Kepala Buaya senyulong (Tomistoma schlegelii).
Abstrak: Buaya sepit atau senyulong (Tomistoma schlegelii) merupakan jenis buaya asli Indonesia yang berhabitat di sungai-sungai Sumatera, Kalimantan, dan juga pedalaman Sulawesi. Salah satu ciri khas buaya senyulong adalah bentuk moncong yang runcing dan sempit, namun hingga saat ini informasi mengenai struktur skelet kepala buaya senyulong sangat terbatas. Penelitian ini bertujuan untuk mempelajari karakteristik anatomi skelet kepala buaya senyulong yang dikatikan dengan fungsi dan perilakunya. Penelitian dilakukan secara eksploratif dengan melakukan pengamatan, pencatatan, dan pengambilan gambar dari skelet kepala buaya senyulong. Skelet kepala berukuran panjang 70 cm, lebar 29 cm, dan tingggi 17 cm dengan permukaan kasar pada os nasale, os frontale, os maxilla, os mandibula, os lacrimale, os jugale. Jumlah gigi pada buaya ini sebanyak 78 buah, terdiri dari 4 buah gigi premaxila, 16 buah gigi maxila, dan 19 buah gigi mandibula. Pada regio orbitalis ditemukan dua pasang fenestrae temporales yang berkembang baik. Fenestra supratemporale merupakan lubang oval yang membentang di sepanjang os parietale. Fenestra infratemporale berbentuk segitiga dan dibatasi oleh os squamosum, os postorbitale, os jugulare, dan os quadratum. Os mandibula hewan ini mempunyai symphysis mandibularis yang panjang yaitu garis yang melintang di corpus mandibulae. Secara fungsional ukuran symphysis mandibularis berkaitan dengan adaptasi hewan terhadap diet makan.
Keyword: kepala, moncong, Tomistoma schlegelii