Judul: Estimated of Economic Losses and Community Behavior on Household Rice Food Waste (Case Study: Cikupa District, Tangerang Regency)
Abstrak: Food waste merupakan makanan layak konsumsi yang mengalami pembuangan di tingkat konsumen, baik sebelum atau sesudah masa kedaluwarsa. Salah satu jenis food waste yang dihasilkan adalah beras. Peningkatan food waste beras menyebabkan kerugian terhadap ketahanan pangan, pemborosan ekonomi dan pencemaran lingkungan. Kecamatan Cikupa merupakan salah satu wilayah sebagai sumber penghasil sampah terbesar kedua di Kabupaten Tangerang, Provinsi Banten. Permasalahan sampah rumah tangga di Kecamatan Cikupa yaitu sampah dibuang tanpa proses pemilahan, tidak ada pengelolaan sampah secara berkelanjutan, serta penimbunan dan pembakaran sampah di lahan terbuka. Tujuan penelitian untuk menghitung nilai kerugian ekonomi akibat food waste beras, menganalisis faktor penyebab, dan mengkaji strategi pengelolaan food waste beras rumah tangga. Metode yang digunakan yaitu SNI 19-3964-1994, damage cost, benefit transfer, metode regresi logistik, dan analytical hierarchy process (AHP). Hasil penelitian menunjukkan bahwa food waste beras di Kecamatan Cikupa menyebabkan kerugian ekonomi sebesar Rp25.637.901.552 per tahun dan kerugian lingkungan sebesar Rp43.186.964.681 per tahun. Faktor penyebab food waste beras adalah harga beras, selera, pengetahuan, kesehatan dan umur. Strategi pengelolaan food waste beras dapat diimplementasikan dengan meningkatkan kualitas sumber daya manusia (SDM) melalui kegiatan pemanfaatan sampah menjadi pupuk dan pakan ternak., Food waste is referred to edible food that is thrown away by the people, either before or after the expired time. Rice is one of the common food waste products. The increase in rice food waste causes losses to food security, economic waste and environmental problem. Cikupa sub-district is the second largest waste producer in Tangerang Regency, Banten Province. The problem of household waste in Cikupa District is disposing of waste without a sorting process, there is un sustainable waste management, as well as landfilling and burning waste in open area. The aims of this study are to calculate the value of economic and environmental losses due to rice food waste, to analyze the causal factors, and to examine sustainable food waste management strategies. The method used are SNI 19-3964-1994, damage cost, benefit transfer, logistic regression method, and analytical hierarchy process. The results showed that rice food waste in Cikupa District caused economic losses of Rp25.637.901.552/year and environmental losses of Rp43.186.964.681/year. Generated food waste are driven by the price of rice, tastes, knowledge, habits, health and age. Food waste management strategies can be implemented by improving the quality of human resources (HR) through educational to process waste into fertilizer and feed animal.
Keyword: konsumsi, pembakaran sampah, pencemaran, pemanfaatan sampah

Judul: Estimated Value of Losses On Household Rice  Food Waste (Case Study: Pisangan and Rengas Subdistrict, East Ciputat District)
Abstrak: Food waste adalah sisa makanan pada tahap konsumsi, mulai dari penyiapan bahan makanan hingga selesai konsumsi. Peningkatan jumlah penduduk berbanding lurus dengan timbulan food waste, salah satunya sisa nasi. Kelurahan Pisangan dan Rengas merupakan kawasan di Kecamatan Ciputat Timur yang merupakan daerah penghasil jumlah sampah per kapita terbesar di Kota Tangerang Selatan. Manajemen konsumsi dan pengelolaan sampah yang belum optimal menjadi permasalahan yang berdampak terhadap katahanan pangan dan capaian Sustainable Development Goals (SDGs). Penelitian ini bertujuan untuk (1) menghitung nilai kerugian ekonomi dan lingkungan akibat food waste nasi dan (2) menganalisis strategi pengelolaan food waste nasi rumah tangga di Kelurahan Pisangan dan Rengas. Metode yang digunakan yaitu damage cost, benefit transfer, dan analytical hierarchy process (AHP). Kerugian total akibat food waste nasi rumah tangga di Kelurahan Pisangan mencapai Rp2.395.605.848/tahun dan Rengas sebesar Rp1.524.057.099/tahun. Strategi pengelolaan food waste nasi dapat diimplementasikan melalui peningkatan kualitas SDM, pengolahan untuk dikonsumsi kembali, dan pemanfaatan sebagai pakan ternak., Food waste is the remnants of food at the consumption stage, starting from preparing food ingredients to completion of consumption. The increase in population directly correspond with the rising of food waste, one of which is rice. Pisangan and Rengas Subdistrict are part of East Ciputat District, which is the largest per capita waste producing area in South Tangerang. Consumption and waste management that have not been carried out in sustainable manner become problems that have an effect on food security and achievement of Sustainable Development Goals (SDGs). This research aims to (1) calculate the economic value and environmental losses due to rice food waste and (2) analyze the management strategy of household’s rice food waste in Pisangan and Rengas Subdistrict. The methods used are damage cost, benefit transfer, and analytical hierarchy process (AHP). Total loss due to household rice food waste in Pisangan reached Rp2.406.323.672/year and Rengas reached Rp1.524.057.099/year. Food waste management strategies can be implemented by improving the quality of human resources, reprocessing to be consumed again, or processing waste for animal feed.
Keyword: consumption, economics, environtmental, waste management

Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell