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: Analysis of Household Food Waste Management in Kampung Kebon Kopi, Cibanteng Village, Bogor Regency.
Abstrak: Sistem Informasi Pengelolaan Sampah Nasional (2021) menyatakan bahwa komposisi sampah yang mendominasi di Indonesia adalah sampah sisa makanan sebesar 40,6%. Kampung Kebon Kopi RW 10, Desa Cibanteng merupakan kawasan pemukiman yang memiliki permasalahan sampah antara lain masyarakatnya masih membuang sampah dalam kondisi tercampur antara sampah organik dan anorganik, tidak memiliki Tempat Pembuangan Akhir Sampah Sementara (TPS) yang layak, sehingga sampah rumah tangga yang dihasilkan dibuang ke lahan kosong serta masih banyak masyarakat Kampung Kebon Kopi yang membuang sampahnya ke sungai. Tujuan penelitian ini adalah mengestimasi timbulan dan nilai kehilangan food waste, mengkaji faktor pendorong dan penghambat masyarakat dalam menghasilkan food waste, dan menganalisis alternatif kebijakan pengelolaan food waste rumah tangga yang dapat dilakukan di Kampung Kebon Kopi RW 10. Metode pengambilan sampel penelitian ini menggunakan metode SNI 19-3964-1994 dan Purposive Sampling. Metode analisis data yang digunakan pada penelitian ini ialah pendekatan harga bahan mentah dan bahan matang, analisis deskriptif, dan Multi Criteria Decision Analysis. Hasil penelitian menunjukkan bahwa timbulan food waste rumah tangga di Kampung Kebon Kopi RW 10 terhitung sebesar 319.631,18 kg/tahun, dengan komposisi timbulan food waste terbesar ialah nasi. Faktor pendorong masyarakat dalam menghasilkan food waste paling banyak yaitu faktor sosial dan budaya, sedangkan faktor penghambat terbanyak yaitu faktor agama. Alternatif pengelolaan food waste yang diminati berdasarkan preferensi masyarakat ialah pembuatan pupuk kompos sederhana menggunakan larutan gula dan EM4. Selain itu, berdasarkan analisis MCDA, dapat direkomendasikan alternatif terbaik untuk pengelolaan food waste di Kampung Kebon Kopi ialah menggunakan Maggot BSF (Black Soldier Fly). Kata kunci: konsumsi, nilai kehilangan, pemborosan sumberdaya, timbulan sampah., States that the composition of waste that dominates in Indonesia is food waste at 40,6%. The Kebon Kopi RW 10, Cibanteng Village is a residential area that has waste problems such as the community still disposes of garbage in a mixed condition between organic and inorganic waste, and does not have a proper Temporary Waste Disposal Site (TPS), so that household waste is generated thrown into vacant land, and there are still many people in Kebon Kopi Village who throw their garbage into the river. This research aims to estimate the generation and value of food waste loss, examine the factors that encourage and inhibit society in producing food waste, and analyze alternative household food waste management that can be carried out in Kampung Kebon Kopi RW 10. The sampling method of this study used the SNI 19-3964-1994 method and Purposive Sampling. The data analysis method used in this research is the approach to the price of raw materials and cooked materials, descriptive analysis, and Multi Criteria Decision Analysis. The results showed that household food waste generation in Kampung Kebon Kopi RW 10 was 319,631.18 kg/year, with rice is largest composition of food waste generation. The driving factor for the community in producing the most food waste is social and cultural factors, while the most inhibiting factor is the religious factor. Alternative food waste management that can be desired based on community preferences is the manufacture of simple compost using a solution of sugar and EM4. In addition, based on MCDA analysis, it can be recommended that the
Keyword: Consumption, Loss Value, Waste of Resources, Waste Generation

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