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"ABSTRAKEfficiency of water usage is needed for sustainable agriculture. The aim of this research is to investigate the hydroponic (NFT, DFT, Aeroponic) efficiency on water use using Amaranthus viridis L. as the planted material. Efficiency on water use was measured by comparing the water use on hydroponic with the control during the plant growing period. The result shows that the three type of hydroponics are able to increase efficiency of water use. NFT is the most efficient technique with efficiency on water use 20.43%. While DFTand Aeroponic, has the efficiency on water use 12.29% and 3.57%, respectively. Enhancing efficiency of water use on hydroponic was caused by the clossing and circulating irrigation technique on hydroponic are able to minimize the evaporation . "

"Bangunan hijau yang mengusung konsep sustainability dimaknai juga suatu konsepyang mengaplikasikan bagaimana sebuah bangunan dirancang, dibangun dandiaplikasikan dengan memperhatikan sumber daya yang efisien, bertanggung jawabterhadap lingkungan serta berdampak positif bagi lingkungan sosial dan ekonomi.Kegagalan konsep dalam bangunan sering timbul akibat besarnya perhatian padapertimbangan teknis, dengan hanya sedikit mempertimbangkan nilai-nilai,perilaku dan karakter penghuninya. Bangunan blok eksisting rusunawa padakawasan yang ditetapkan menggunakan konsep zona hijau, belum melakukanpenerapan konsep hijau pada bangunan. Untuk menerapkan konsep tersebut padabangunan perlu ditinjau aspek perilaku penghuninya. Dari hubungan bangunandan penghuninya, dapat diketahui faktor-faktor yang paling mempengaruhi agarkonsep bangunan hijau untuk penghuni rusunawa yang lebih optimal. Tujuan daripenelitian ini adalah untuk menganalisis penerapan konsep bangunan hijau padaRusunawa ditinjau dari aspek efisiensi energi, air, kualitas udara, dan pengelolaanlimbah, menganalisis perilaku peduli lingkungan penghuninya, serta menganalisishubungan perilaku peduli lingkungan dengan sikap, pemahaman dan persepsipenghuni terhadap penerapan konsep hijau pada bangunan. Metode analisisdeskripif digunakan untuk menganalisis penerapan bangunan hijau dan mengukurindeks perilaku peduli lingkungan penghuni. Untuk menganalisis hubunganperilaku peduli lingkungan dengan sikap, pemahaman dan persepsi penghuniterhadap penerapan konsep hijau pada bangunan digunakan metode SEM-PLS.Berdasarkan analisa diperoleh hasil bahwa penerapan konsep hijau ditinjau dariaspek efisiensi energi pada bangunan lokasi penelitian sudah memenuhi kriteria;aspek efisiensi air, penerapan pada bangunan sudah memenuhi kriteria; aspekkenyamanan termal bangunan belum memenuhi kriteria kenyamanan dalamkonsep hijau; aspek pengelolaan limbah cair bangunan belum memenuhi kriteriadalam hal pemanfaatan air hasil olahan IPAL; dan dari aspek limbah padatbangunan belum menyediakan fasilitas pengolahan/pemilahan sampah. Dari hasilpenilaian perilaku peduli lingkungan penghuni rusun, tingkat kepedulian penghuniberada pada kriteria sedang, dengan indeks tertinggi pada kriteria efisiensi energidan terendah pada kriteri pengelolaan sampah. Berdasarkan model dapat diketahuibahwa untuk memperbaiki perilaku peduli lingkungan dapat dilakukan denganmeningkatkan pengetahuan penghuni terhadap informasi mengenai programlingkungan dan meningkatkan persepsi penghuni terhadap penerapan konsephijau. Persepsi penghuni terhadap penerapan konsep hijau dapat ditingkatkandengan perbaikan fasilitas pada bangunan sesuai kriteria.

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Green building is defined as a concept that applies how a building is designed,built and applied with due regard to efficient resources, is responsible for theenvironment and has a positive impact on the social and economic environment.The failure of the concept in the building often arises from the great attention paidto technical considerations, with little consideration of the values, behavior andcharacter of the inhabitants. The existing rental flats building blocks in the areathat are designated using the green zone concept, have not implemented the greenconcept in the building. To apply this concept to buildings, it is necessary toreview aspects of the occupants' behavior. From the relationship between thebuilding and its occupants, it can be seen the factors that most influence theoptimal green building concept for the residents of the flat. The purpose of thisresearch is to analyze the application of the green building concept in rental flatsin terms of energy efficiency, water, air quality and waste management, to analyzethe environmental care behavior of its residents, and to analyze the relationshipbetween environmental care behavior and occupants' attitudes, understandingand perceptions of the concept application green on the building. Descriptiveanalysis method is used to analyze the application of green buildings and measurethe index of environmental care for residents. To analyze the relationship betweenenvironmental care behavior and attitudes, understanding and occupants'perceptions of the application of green concepts in buildings, SEM-PLS method isused. Based on the analysis, the results show that the application of the greenconcept in terms of energy efficiency aspects in the research location building hasmet the criteria; aspects of water efficiency, application in buildings has met thecriteria; the thermal comfort aspect of the building does not meet the comfortcriteria in the green concept; the aspect of building liquid waste managementdoes not meet the criteria in terms of utilizing water from IPAL; and from theaspect of solid waste, the building has not provided waste processing / sortingfacilities. From the results of the assessment of the environmental care behaviorof the residents of the flat, the level of care of residents is in the medium criteria,with the highest index on the criteria for energy efficiency and the lowest on thecriteria for waste management. Based on the model, it can be seen that improvingenvironmental care behavior can be done by increasing residents 'knowledge ofinformation about environmental programs and increasing residents' perceptionsof the application of green concepts. Residents' perceptions of the application ofthe green concept can be improved by improving facilities in buildings accordingto the criteria. The concept requires environmental program factors that are runby the building manager and the active involvement of residents."

"Proses produksi gula aren di rumah Industri CV Diva Maju Bersama menghasilkan air limbah dalam prosesnya. Air limbah industri ini memiliki konsentrasi COD yang tinggi yakni lebih dari 2000 mg/l sehingga melebihi baku mutu yang telah ditetapkan. Tujuan dari penelitian ini adalah menganalisa efektivitas system Moving-bed biofilm sequencing batch reactor dalam mengurangi konsentrasi COD pada air limbah industri gula aren sekaligus kesesuaiannya dengan baku mutu yang ada. Proses penelitian berlangsung secara eksperimental pada skala laboratorium dengan menggunakan 1 unit MBSBR dengan working volume 25 liter. Media yang digunakan sebagai tempat pertumbuhan bakteri adalah Kaldness K1 dengan rasio 60. Pada proses pembebanan digunakan variasi waktu detensi 12 sampai 24 jam. Hasil percobaan menunjukan rentang efisiensi penyisihan COD pada waktu detensi 12, 18, dan 24 jam berturut-turut 84 ndash; 89 , 86 ndash; 91 , dan 88 ndash; 92 dengan konsentrasi DO optimum 2.41 ndash; 2.62 mg/l. Nilai beban organik pada rentang 3.27 ndash; 4.27 kg COD/m3.hari menghasilkan efisiensi penyisihan COD diatas 88 . Peningkatan nilai beban organik mengakibatkan penurunan efisiensi penyisihan COD. Berdasarkan uji statistik independent t-Test dan analisa terhadap baku mutu, waktu detensi 24 jam dipilih sebagai waktu detensi optimum yang akan digunakan untuk kebutuhan perancangan.

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The production of palm sugar in CV Diva Maju Bersama home industry produces waste water in the process. This industrial waste water has a high concentration of COD that is more than 2000 mg l which exceeds the quality standard. The purpose of this research is to analyze the effectiveness of Moving bed biofilm sequencing batch reactor system in reducing the concentration of COD in its suitability with the quality standard. The research process was conducted experimentally on a laboratory scale. MBSBR unit with working volume 25 liters is being used during the experimental. The medium used as a place for bacterial growth is Kaldness K1 with a ratio of 60. The detention time were varied from 12 to 24 hours during the feeding time.

The results show the efficiency removal of COD at 12, 18, and 24 hours detention time respectively is 84 ndash 89 , 86 ndash 91 , and 88 ndash 92 with optimum DO concentration 2.41 2.62 mg L. The optimum organic loading rate to reach COD removal efficiency above 88 is in the range of 3.27 4.27 kg COD m3.day. The increasing of organic loading rate will result in decreased efficiency removal of COD. Based on statistical independent t Test method and also consideration of the quality standard, 24 hour detention time is chosen as the most optimum detention time that will be used for the designing requirement."