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The recovery of Au(III) in the Au/Cu/Mg system from mercapto-silica hybrid coated magnetite (SH/Fe3O4@SiO2) adsorbent has been investigated. This adsorbent characterized using FT-IR to determine functional groups, crystallinity study using XRD, surface morphology using SEM, material compositions with XPS, surface area using nitrogen adsorption, and TGA to study thermal stability. Adsorption of metal ions carried out with batch system for 30 minutes at a pH of 3. In the Au/Cu/Mg multi-metal system, Au(III) ions were easily desorbed (approximately 85%) by SH/Fe3O4@SiO2 adsorbent based on HSAB (Hard Soft Acid Base) theory that Au(III) ion is a softer metal than Cu(II) and Mg(II) where Au(III)>Cu(II)>Mg(II). The recovery of Au(III) ions was easily desorbed using thiourea 7% in 0,1 M HCl solution with the percentage of 79%. The process of SH/Fe3O4@SiO2 adsorbent separation after adsorption and recovery was very easy. The adsorbent could perfectly separate in 5 minutes using an external magnet. The SH/Fe3O4@SiO2 adsorbent can be reused on the adsorption-desorption process of Au(III) in the Au/Cu/Mg system approximately four times of cycle reactions.

Scabies disease is an infectious disease with itching on the skin due to the Sarcoptes scabiei mite that burrows into the skin. This disease can be transmitted through sleeping together, direct contact, playing together, using shared bedding, using shared bathing and eating utensils. Scabies disease arises also due to the low level of understanding of students about scabies disease and lack of awareness of personal hygiene, as well as the dominant factor, namely living together with direct contact with students who have been infected with scabies. This Community Service activity was carried out in May 2022 in three stages, namely preparation, implementation, and evaluation. Personal Hygiene owned by the male students of Pondok Pesantren Safinatul Huda Banyuwangi was mostly not good, which could be seen from the aspect of cleanliness of towels and beds. Most of the scabies disease was experienced by male students. There was a close relationship between the personal hygiene of students and the experience of scabies in students. Therefore, the application of clean and healthy living behavior must continue to be implemented.

Pendahuluan: Kesehatan, air, dan tempat tinggal merupakan kebutuhan yang penting. Masyarakat umum yang tinggal di kawasan industri Muncar Kabupaten Banyuwangi mengandalkan kebutuhan air yang berasal dari PDAM dikarenakan air tanah yang keruh akibat limbah industri perikanan. Adanya limbah ini tentu saja dapat mengganggu kesehatan. Beberapa masyarakat yang tinggal di kawasan industri Muncar mengeluhkan penyakit akibat limbah yaitu gatal-gatal dan batuk. Tujuan: Desa Tapanrejo, Desa Sumbersewu, dan Desa Kumendung merupakan beberapa Desa yang berada di Kecamatan Muncar Kabupaten Banyuwangi Jawa Timur yang dekat dengan industri pengolahan ikan. Di Desa ini menarik untuk dikaji kandungan kadar klorida dalam air sumur apakah masih layak digunakan sebagai air minum ataukah tidak, mengingat air tanah di daerah ini terkandung cemaran limbah dari hasil perikanan. Metode: Diambil sampel air sumur dari masing-masing Desa kemudian dilakukan analisis kadar klorida di laboratorium dengan metode titrasi argentometri. Hasil: Kadar klorida pada air sumur di ketiga Desa yang terletak di Kawasan Industri Muncar Banyuwangi menunjukkan hasil di bawah nilai ambang batas yang ditetapkan oleh Menteri Kesehatan RI. Hal ini menunjukkan bahwa air bawah tanah tidak tercemar oleh limbah industri perikanan di daerah tersebut sehingga layak digunakan untuk air minum,  mandi, masak, maupun mencuci.

BACKGROUND: The coronavirus disease 2019 (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus 2, has caused more than 13 million cases. Until now, there is no very efficient treatment for COVID-19. There needs to be government support in socializing the COVID vaccine, one of which is the Mall Orang Sehat (MOS) innovation for healthy people, which aims to make people believe in vaccines. AIM: The purpose of this study was to determine the relationship between policy innovations in the MOS area of healthy people and the willingness of the community to be vaccinated. METHODS: The research method in this study uses a cross-sectional study design, with a sample of 200 using a stratified random sampling technique, with validated question instruments regarding the statement of respondents being willing to be vaccinated or not, the analysis in this study using Chi-square. RESULTS: The results of this study indicate that there is a relationship between MOS policy innovation and patient’s willingness to be vaccinated, as evidenced by the results of SPSS p 0.000 < 0.05 which means that there is a relationship between variable 1 and variable 2. CONCLUSIONS: The COVID-19 vaccine is the government’s effort in tackling the COVID-19 pandemic. With this health education based (Healthy People Mall) it has been proven to be able to influence the public in knowing the effects and impacts of COVID-19 so that people are willing to be vaccinated.