No abstract

No abstract

Banyaknya jumlah daun yang berguguran di suatu wilayah atau pemukiman merupakan potensi yang pantas diperhitungkan agar menjadi bahan yang bernilai guna, Salah satunya dengan melakukan pengomposan. Kadar air mempunyai peran yang kritis dalam rekayasa pengomposan karena dekomposisi material organik bergantung pada ketersediaan kandungan air. Kadar air menjadi kunci penting pada proses pengomposan. Tujuan dari penelitian ini adalah untuk menganalisis pengaruh kadar air terhadap pengomposan sampah organik yaitu sampah daun kering dan menentukan kadar air optimum untuk pengomposan sampah organik berupa daun kering. Penelitian ini menggunakan variasi kadar air (40%, 50%, dan 60%) dan perlakuan ukuran bahan dicacah menjadi ukuran 1cm dan  menggunakan MOL tetes tebu sebagai bioaktivator.Waktu pengomposan berlangsung selama 30 hari dengan metode pengomposan secara open windrow. Berdasarkan penelitian ini kadar air yang optimal untuk proses pengomposan sampah organik daun kering adalah kadar air 60% dilihat dari Kadar C-Organik terendahnya sesbesar 27,324%, kandungan N-Total yang paling tinggi 2,441%,Rasio C/N terendahnya sebesar 11,194%, kandungan P-Total sebesar 0,211%, kandungan K-Total sebesar 1,7776% dan Nilai GI yang paling tinggi sebesar 125,58% dan kemudian hasil uji mikrobiologi menunjukan bahwa jumlah total koliform  yang ada pada kompos tidak lebih dari 1000 MPN/g.

Indoor quality is an important and necessary concern towards indoor use, which sustains the health of the occupants. Indoor health is the resultant of exposure to all building materials, the contents of room equipment, occupant activities, and the ability of the space to eliminate negative effects on life. This paper adequately describes sources of pollutant exposure, pollutant movement, biological processes, health impacts, all of which can cause Sick Building Syndrome (SBS). Furthermore, indoor depollution measures to counteract SBS need to be carried out at the stages of building design and construction. Based on the interests and needs, here it is necessary to propose a certification of potential SBS at the design and construction stages. Thus, SBS responsibilities can be proportionately distributed to designers, contractors, and building users.

In this article, a theoretical approach is focusing on the use of mixed plants to remediate polluted environmental media. Essential conditions should be performed, particularly in supporting plant growth, the safety factor for consumers and the use of amendments in improving the efficiency of phytoremediation. In general, it takes more than one type of the plant to be more effective in restoring a polluted environment. For this purpose, the selected plant species mus synergistically eliminate the types of pollutants present in the environmental media. Thus, the mixed plants process becomes very effective in removing many of the pollutants on site. In practice, mixed plants operations could be selected from one or a combination of simultaneous, sequential or alternating patterns, all of which must be adapted to polluted media conditions.