Judul: Efektivitas Ampas Teh Sebagai Adsorben  Alternatif Limbah Cair Industri Tekstil
Abstrak: Colored wastewater from textile industries treated by activated carbons requires relatively high costs. To overcome this disadvantages relatively cheap materials are used as alternative adsorbent, such as teawaste that has been used in this study. The teawaste powder was washed by deionized water (TA biosorbent), then washed by HNO3 0.6 M (AA), NaOH 0.6 M (AB), or ethanol (AE). The highest adsorption for amaranth and methylene blue was obtained from AE and TA biosorbent, i.e. 90.51% and 94.93%. The required time for 0.1 g AE biosorbent to adsorp amaranth solution was 6 hours. The amount of 0.2 g TA biosorbent was the best in adsorbing methylene blue solution at 2 hours contact time. The change of ionic strength and pH influenced adsorption capac ity of teawaste. The adsorption capacity of AA biosorbent to amaranth was increasing by adding KNO3 1.00 M. Addition of 0.10 KNO3 to methylene blue solution increased the capacity of all biosorbent . Adjusting to pH 4 increased AB biosorbent capacity of methylene blue solution and pH 6 increased AA biosorbent adsorption capacity to the same solution. According to the pattern of isotherm adsorption from teawaste, biosorbent was selective to methylene blue rather than to amaranth.
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Judul: Adsorben berbasis limbah padat tapioka
Abstrak: The use of agroindustrial waste and clay mineral have been studied as alternative adsorbents for dyes, such as cibacron blue. In this research, tapioca solid waste, kaolin, bentonite, and the mixture of tapioca solid waste and kaolinite or bentonite were used as adsorbents for cibacron blue. Acid and base treatments were carried out to activate the adsorbents. Adsorption was varied with adsorption times and adsorbent weight. The result showed that acid activated tapioca solid waste had the highest adsorption capacity. The optimum adsorption time and adsorbent tapioca solid waste weight was 75 minutes and 1 g. The cibacron blue concentration decrease from 50 mg/L to 11.12 mg/L. On the other hand, the optimum condition for commercially activated carbon were 30 minutes and 0.5 g with concentration decreasing from 50 mg/L to 19.44 mg/L. The adsorption capacity for acid activated tapioca solid waste and activated carbon were 1.94 mg/g and 3.05 mg/g adsorbent respectively. With adsorption efficiency were 77.75% and 61.11%. Acid activated tapioca solid waste were followed Freundlich isotherm.
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Judul: Infeksi Virus Parainfluenza Pada Anjing
Abstrak: Virus parainfluenza anjing termasuk famili Paramyxoviridae, berbentuk pleomorf dengan ukuran bervariasi (bergaris tengah antara 100-500 nm), berpembungkus peka ether, berisi genom RNA dan secara serologis mempunyai kesamaan dengan virus SV-5 kera; dikenak sebagai salah satu kausa penting dari sindrom "kennel cough". Infeksinya dapat mengenai anjing semua umur yang belum pernah terinfeksi atau mendapatkan vaksinasi mengakibatkan gejala klinis ringan yang terbatas pada traktus respirasi atu infeksi yang secara klinis tidak memperlihatkan gejala nyata. Gejala klinis yang nampak setelah masa inkubasi (1-5 hari) terlewati berupa batuk yang tidak berat selama beberapa hari, berbagai tingkat tonsilitis dan pharyngitis dan kadang-kadang ditemukan kenaikan temperatur rektal antara 1-2 derajat C dari temperatur normal rat-rata. Anjing terinfeksi mengandung virus pada traktus respirasi bagian atas dan bawah serta limfonoduli sampai hari ke 9 setelah infeksi. Penyebaran virus antar anjing terjadi secara aerogen.
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