Pemanfaatan Silika Mesopori Mcm-48-nh2 sebagai Adsorben Ion Cu2+

Ion Cu2+ merupakan unsur yang berbahaya jika terkontaminasi ke dalam lingkungan. Oleh karena itu, keberadaannya dalam lingkungan perairan harus dikurangi. Adsorpsi merupakan salah satu cara untuk mengurangi kandungan ion Cu2+ dalam larutan. Adsorpsi ion Cu2+ oleh MCM-48-NH2 dipelajari dengan variasi waktu kontak, pH, dan konsentrasi dari Cu2+. Isotermal Langmuir dan Freundlich digunakan untuk mempelajari isotermal adsorpsi Cu2+ oleh MCM-48-NH2. Hasil penelitian menunjukkan bahwa adsorpsi Cu2+ oleh MCM-48-NH2 lebih sesuai dengan isotermal adsorpsi Langmuir. Nilai kapasitas adsorpsi Cu2+ oleh MCM-48-NH2 adalah 0,52 mmol g-1.Kata Kunci : Adsorpsi, MCM-48-NH2, Cu2+, isotermal Cu2+ ion is an element harmful if contaminated into the environment. Therefore, its presence in the aquatic environment must be reduced. Adsorption is one method to reduce thecontent of Cu2+ ion in solution. Adsorption of Cu2+ ion by MCM-48-NH2 was studied with variation of contact time, pH, and concentration of Cu2+ ion. Langmuir and Freundlich models were used to study the adsorption isotherm of Cu2+ by MCM-48-NH2. The result showed that adsorption of Cu2+ by MCM-48-NH2 more suitable with Langmuir models. The adsorption capacity of Cu2+ by MCM-48-NH2 was 0.52 mmol g-1

Respon Pertumbuhan Padi Gogo Lokal yang Diberi Bahan Organik pada Berbagai Kondisi Ketersediaan Air

Research aimswas to studies the of response localrainfed lowland riceon the application of organic matter invarious condition of thewater availability. Research was carried out in February until June 2015, in a screen house of BalaiBenih, Petobo Sub-district, South Palu, Central Sulawesi.This study was arranged infactorial randomized block design,first factor was the availability of water, consists of 4 levels that were the field capacity, 85% of the field capacity, 70% of the field capacity, and55 % of field capacity.The second factor consisting of two rates of organic matter, namely without bokashi fertilizer andbokashi fertilizer.Every treatment was repeated three times so there are 24 units of experiments.Every unit of experiment consisting of 2 plants so there are 48 populations of plant. The result showed that the application of 70% of field capacity can obtain higher plant andmore younger plant than others treatment at the beginning growth. The application of organic matter seem no effect at the beginning growth. There is no significant difference of the application of organic matter at all the availability of water condition

Human Resource Planning and Development

Perencanaan SDM atau Human Resource Planning (HRP) merupakan proses peramalan yang bersifat sistematis dengan cara menghubungkan kebutuhan SDM suatu perusahaan dengan strategi dan tujuan perusahaan. Perencanaan sumber daya manusia adalah proses analisis dan identifikasi ketersediaan dan kebutuhan akan sumber daya manusia untuk mencapai tujuan. Buku dengan judul “Human Resources Planning and Development” ini terdiri dari 6 bab. Semoga buku ini dapat memberikan manfaat bagi para pembaca