Problems arising from laboratory waste include the content of lead metal ions in it, which can affect health. While on the other hand, Jengkol peel is a market waste and has no economic value. Jengkol peel contains hydroxyl groups and carboxylates to bind heavy metals such as lead (II) ions. So, this study aims to determine the effect of variations in flow rate, adsorbent height, and solution acidity and determine the ability of Jengkol peel in adsorbing lead (II) ions in the laboratory liquid by the column method. Organic groups that include active sides can be removed using 1N sodium hydroxide to increase the adsorption ability. Sodium hydroxide functions to dissolve lignin in lignocellulose compounds so that carboxylic groups are formed in cellulose, which has a role in binding metal ions. The determination of functional groups was carried out by Fourier-transform Infrared Spectroscopy. The identification of the adsorbent morphology was carried out by Scanning Electron Microscope. The adsorption of lead (II) ions by Jengkol peel was determined by calculating the difference between the lead (II) ions in the solution after and before passing through the column. The amount of lead metal remaining in solution was determined using Atomic Absorption Spectroscopy. Sodium hydroxide solution with a concentration of 1N can separate lignin from cellulose contained in lignocellulose to enhance the bio-sorbent ability of the Jengkol peel in binding metal ions. The smaller the flow rate in the column, the higher the amount of lead (II) ions adsorbed in the bio-sorbent. The acidity of the solution has the best adsorption at pH 5. The metal ions from the simulation sample can reduce the number of lead (II) metal ions adsorbed by 11%.

Perawat memiliki peran penting dalam mengatasi masalah tidur pasien melalui pemberian intervensi keperawatan. Penelitian ini bertujuan untuk mengidentifikasi faktor yang berhubungan dengan penerapan intervensi keperawatan untuk mengatasi masalah tidur. Desain penelitian yang digunakan adalah analitik korelasi dengan pendekatan cross sectional dan teknik proportional random sampling. Penelitian ini melibatkan 99 perawat di instalasi rawat inap di salah satu rumah sakit di Jakarta. Data dianalisis dengan uji Chi-square. Hasil penelitian menunjukkan terdapat hubungan antara pengetahuan dan motivasi perawat dengan penerapan intervensi keperawatan (berturut-turut p= 0,022, p= 0,012; α= 0,05). Sebanyak 53,5% perawat belum mengatasi masalah tidur pasien dengan baik. Pengetahuan dan motivasi perawat perlu ditingkatkan melalui pelatihan yang terintegrasi dengan topik keamanan pasien. Kata kunci: intervensi keperawatan, masalah tidur, motivasi, pengetahuan, perawat Knowledge and Motivation of Nurses Important in the Implementation of Nursing Intervention to Overcome Sleep Problems in Hospital. Nurses have an important role in addressing hospitalized patients’ sleeping disorder. This study aimed to identify factors associated with nursing interventions to overcome sleeping disorder in inpatient unit of one hospital in Jakarta. This study applied correlative-analytical with cross sectional design approach. There were 99 nurses recruited by proportional random sampling. Data was analyzed using chi square test method. Results showed that there were correlation between knowledge and motivation with implementation of nursing interventions for sleeping disorder (successively p= 0.022, p= 0.012; α= 0.05). There were 53.5% of the nurses that were unable to provide the intervention well.  The nurses’ knowledge and motivation need to be improved by integrated training of patient safety. Keywords: knowledge, nursing intervention, sleep disorder, motivation, nurse