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 Suara Song Burung Kenari (Serinus canaria) Postur Besar dan Kecil.
Abstrak: Burung kenari (Serinus canaria) memiliki nyanyian yang sangat bervariasi dengan durasi yang panjang dan merupakan tipe burung bernyanyi open learners. Penelitian ini bertujuan menganalisis karakteristik suara song burung kenari (Serinus canaria). Penelitian dilakukan pada bulan April sampai Juni 2017 di Bogor, Jawa Barat. Perekaman suara song terhadap 12 ekor burung kenari jantan dilakukan dengan menggunakan mikrofon Sennheiser ME66 dan alat perekam Sony PCM-D50. Burung kenari yang digunakan merupakan burung yang pernah mengikuti kontes burung kicau dan memiliki predikat juara kontes burung. Amplitudo, durasi suara, frekuensi, dan volume suara burung dianalisis dengan menggunakan software Raven Pro 1.4. Data tersebut selanjutnya dianalisis deskriptif. Hasil analisis suara menunjukkan bahwa burung kenari memiliki banyak syllable, suara song rapat dan tidak terputus-putus, tempo yang cepat, dan adanya pengulangan suku kata pada setiap suara song. Burung kenari postur kecil memiliki rataan durasi lebih panjang dibandingkan dengan kenari postur besar, tetapi burung kenari besar memiliki rataan max amplitudo, average power, max power, min amplitudo, peak amplitudo, dan peak frekuensi.
Keyword: karakteristik suara (song), kenari, syllable