ADSORPSI ZAT WARNA METILEN BIRU DENGAN KARBON AKTIF DARI KULIT DURIAN MENGGUNAKAN KOH DAN NaOH SEBAGAI AKTIVATOR

Durian is a kind of tropical fruits which can grow well in Indonesia. Durian is containing 60-75% shell. Durian shell could be a potential alternative to activated carbon because it contains 57.42% carbon. The aim of this research is to know the effect of contact time and  stirring speed to activated carbon adsorption capacity from durian shell with KOH and NaOH as activators. FTIR (Fourier Transform Infra Red) analysis showed the activation process effects on  absorption intensity  wavelength region and resulted in formation of C = C aromatic tape, so that the nature of the charcoal becomes more polar compared with the initial condition. Analysis using spectrophotometer UV-Vis to determine  absorbance and  final concentration of each variation of contact time and stirring speed. The results showed that the maximum adsorption capacity obtained by activation of KOH and NaOH on stirring speed of 150 rpm and a contact time of 90 minutes is equal to 3.92 mg / g and 3.8 mg / g respectively. The maximum surface area obtained by activation of KOH and NaOH during the stirring speed 130 rpm and a contact time of 120 minutes is equal to 1785.263 m2 / g and 1730.332 m2 / g respectively. The maximum surface area obtained from this research has met the standards of commercial activated carbon surface area was between 800-1800 m2/ g. Modeling pseudo second order presents a more representative adsorption data, a second order equation is based on the assumption that adsorption step is chemosorption

KONSERVASI EKOSISTEM (PENGELOLAAN) MANGROVE PANTAI MUARA INDAH DI KECAMATAN PANTAI LABU KABUPATEN DELI SERDANG

This study aims to find out the problems that exist in Muara Indah Beach in Pantai Labu District, Deli Serdang Regency, as well as to find out how the management (conservation) of Mangrove in Muara Indah Beach in Pantai Labu District, Deli Serdang Regency. The type of research used in this research is descriptive research. The research method in this study uses the method of directly carrying out the observation process which is followed by the research process Literature study which is a data collection method directed at searching data and information through documents, both written documents, photographs, pictures, and electronic documents that are can support in the writing process. Sources of data in this study are through literature, observation, photos, and others. The data analysis technique used in this study is through four stages, namely data collection, data reduction, data presentation and drawing conclusions. Based on research that has been carried out by several mangrove conservation efforts in Muara Indah Beach, in the District of Pantai Labu, Kab. Deli Serdang is a mangrove nursery, the nursery is carried out to overcome damage to mangrove forests due to abrasion and also deforestation of mangrove forests for land conversion. Keywords: conservation, ecosystem, mangroves.Penelitian ini bertujuan untuk mengetahui permasalahan yang terdapat pada Pantai Muara Indah di Kecamatan Pantai Labu Kabupaten Deli Serdang, serta untuk serta untuk mengetahui bagaimana pengelolaan (konservasi) Mangrove di Pantai Muara Indah Di Kecamatan Pantai Labu Kabupaten Deli Serdang tersebut. Jenis penelitian yang digunakan pada penelitian ini adalah penelitian deskriptif. Metode penelitian dalam penelitian ini menggunakan metode secara langsung melakukan proses observasi yang ilanjutkan dengan proses penelitian Studi pustaka yang merupakan metode pengumpulan data yang diarahkan kepada pencarian data dan informasi melalui dokumen-dokumen, baik dokumen tertulis, foto-foto, gambar, maupun dokumen elektronik yang dapat mendukung dalam proses penulisan. Sumber data dalam penelitian ini yaitu melalui studi pustaka, observasi, foto, dan lainnya. Adapun teknik analisis data yang digunakan dalam penelitian ini yaitu melalui empat tahap, yakni pengumpulan data, reduksi data,penyajian data dan penarikan kesimpulan. Berdasarkan penelitian yang telah dilakukan beberpa upaya konservasi mangrove yang ada di Pantai Muara Indah Di Kec.Pantai Labu Kab. Deli Serdang adalah pembibitan mangrove, pembibitan dilakukan unutk megatasi kerusakan hutan mangrove akibat abrasi dan juga penggundulan hutan mangrove unutk alih fungsi lahan.   &nbsp