This study deals with the utilizing of supercritical CO2 for recycling of rare metals(i.e. Pt, Pd, Rh) from spent materials. Experiments were conducted at the temperature range of 40-60°C and a pressure up to 30 MPa. A variety of ligands such as…
Tofu is a very favorite food in Asian countries such Indonesia, and is gaining popularity among west countries as well, due to the associated health benefits and its acceptable price. Tofu which is produced by grinding of soy bean produces high of…
The supercritical CO2 extraction of microbial quinones from activated sludge samples obtained from various activated sludge was investigated and compared to the conventional method using organic solvent extraction. The extraction was carried out in a…
The possibility of organic and amino acid production from the treatment of sludge and fish waste using water at sub critical conditions was investigated. The results indicated that at sub-critical conditions, where the ion product of water went…
This article reports production of valuables organic acids from the hydrothermal treatment of representative organic wastes and compounds (i. e. domestic sludge, proteinaceous, cellulosic and plastic wastes) with or without oxidant (H2O2). Organic…
Penggunaan pendekatan saintifik merupakan suatu hal yang diwajibkan pada pelaksanaan kurikulum 2013. Penerapan pendektan saintifik meliputi kegiatan mengamati, menanya, mengasosiasikan, mencoba dan mengkomunikasikan. Selama ini banyak siswa yang…
ABSTRAKPenelitian ini bertujuan untuk mengetahui pengaruh ekstrak saponin biji putat air (Barringtonia racemosa) terhadap mortalitas Cerithidea cingulata. Penelitian dilakukan pada bulan November sampai Januari 2014 di Laboratorium Kimia Laut,…