Judul: Pertumbuhan dan Kualitas Nutrisi Tanaman Iris (Neomarica longifolia) yang Ditanam pada Air Limbah Kantin Kampus IPB
Abstrak: One of wastewater sources comes from canteen and if it is not managed well may cause an environmental polution. One of the methods of controlling water pollution may use aquatic plants. The research aimed to analyse the growth of iris (Neomarica longifolia) where planted in IPB canteen wastewater and to analyse nutrient quality. Iris plants were planted into three media (soil, waste water, and water). Iris was analysed with measuring length of root, leaf, and the number of leaf. Quality of wastewater was analysed by measuring the temperature, pH, DO, BOD5, hardness, detergent, ammonia and N content. Nutrient quality of iris was analysed by using nutrient analysis. Length of root, leaf, and the number of leaf iris were planted in wastewater canteen higher than the other treatments. Iris which was planted in wastewater decreased the temperature, BOD5, hardness, ammonia, detergent, and total N, on the other hand increased in DO and pH in accordance to water quality standards. Protein and fiber content of iris which was planted in wastewater canteen produced 8,88% and 21,18%, respectively. These result were higher than the protein from iris which was planted in soil (7,83% and 19,73% ) and water (8,26 % and 20,65%).
Keyword: Bogor Agricultural University (IPB), ammonia, detergent, iris plant (Neomarica longifolia), dissolved oxygen, Wastewater canteen

Judul: Phytoremediation of Greywater Liquid Waste, Chicken Slaughterhouses, and Tofu Factories Using Water Scape (Ipomoea Aquatica Forsk)
Abstrak: Kegiatan masyarakat sehari-hari, pembuangan air limbah industri, dan rumah tangga merupakan faktor-faktor penyebab terjadinya pencemaran lingkungan. Tujuan penelitian ini adalah membandingkan tingkat pertumbuhan tanaman kangkung air (Ipomoea aquatica Forsk) menggunakan limbah cair greywater (domestik), rumah pemotongan ayam, dan pabrik tahu. Proses penanaman tumbuhan secara hidroponik, pengujian kualitas air, dan pengambilan sampel dilakukan di Laboratorium Seameo Biotrop, Kecamatan Bogor Selatan, Kota Bogor dari Desember 2022 hingga Januari 2023. Analisis data berupa perhitungan nilai parameter kualitas air dan perhitungan rata-rata pengukuran vegetatif. Hasil analisis data yaitu penurunan nilai kualitas air (BOD, COD, dan TSS) dan pertumbuhan vegetatif tanaman yang menunjukkan bahwa limbah cair rumah pemotongan ayam dan greywater lebih efisien tingkat pertumbuhannya dibandingkan limbah cair pabrik tahu. Selain itu, hasil perhitungan indeks pencemaran pada limbah cair greywater dan pabrik tahu mengalami penurunan yang signifikan dikarenakan kandungan organiknya sudah menurun akibat proses fitoremediasi dan pengenceran air dan rumah pemotongan ayam mengalami kenaikan sedikit dikarenakan memiliki kandungan amonia., Daily community activities, disposal of industrial and household wastewater are factors that cause environmental pollution. The purpose of this study was to compare the growth rates of water spinach plants (Ipomoea aquatica Forsk) using greywater (domestic) wastewater, chicken slaughterhouses, and tofu factories. The process of growing plants hydroponically, testing water quality, and taking samples was carried out at the Seameo Biotrop Laboratory, South Bogor District, Bogor City from December 2022 to January 2023. Data analysis in the form of calculating the value of water quality parameters and calculating the average vegetative measurements. The results of data analysis, namely the decrease in the value of water quality and plant growth which shows that the liquid waste of chicken slaughterhouses is more efficient in its growth rate compared to greywater wastewater and chicken slaughterhouses. In addition, the results of the calculation of the pollution index in greywater and tofu factory wastewater have decreased significantly because the organic content has decreased due to the phytoremediation process and water dilution and the chicken slaughterhouse has increased slightly due to the ammonia content.
Keyword: Liquid waste, phytoremediation, water quality, water spinach

Judul: Pengembangan model markov tersembunyi pada identifikasi pembicara
Abstrak: Model Markov Tersembunyi merupakan suatu model yang tersusun dari dua buah proses stokastik, yaitu rantai Markov untuk menampung kemajuan temporal dan proses yang teramati untuk menampung variasi akustik. Model ini dapat digunakan sebagai metode pencocokan pola pada sistem identifikasi pembicaraan. Setiap model mewakili referensi pola dari seorang pembicara di dalam sistem identifikasi pembicara.
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