Topic
Reverse osmosis
About: Reverse osmosis is a research topic. Over the lifetime, 20780 publications have been published within this topic receiving 299185 citations. The topic is also known as: RO.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, the feasibility of brackish groundwater treatment by reverse osmosis (RO) for potable water production was investigated in Jordan, and the results showed that RO is actually efficient since it highly reduced the content of organic and inorganic matters present in raw waters (rejections >98.5%).
119 citations
TL;DR: In this article, a case study of EFC was used to treat the liquid waste obtained from a Reverse Osmosis (RO) plant, which at present converts 99% of a waste stream into potable water.
118 citations
TL;DR: In this paper, a review on the membrane methods recently introduced into the nuclear technology against the background of the other commonly applied separation techniques, with indications of the possibilities and prospects for their further developments.
118 citations
TL;DR: In this article, the removal of five non-steroidal anti-inflammatory drugs (NSAIDs), analgesics and anti-pyretic: acetaminophen, ibuprofen, dipyrone, diclofenac, and caffeine by Nanofiltration (NF) and Reverse Osmosis (RO) was evaluated.
Abstract: Concern about organic micropollutants, which are present in the environment at trace concentrations (ng L−1–μg L−1) is related to the adverse effects to organisms exposed to these substances. Pharmaceutically Active Compounds (PhCAs) may be present in natural waters and usually cannot be removed or degraded by conventional water treatment processes. For this reason, treatment techniques, such as Nanofiltration (NF) and Reverse Osmosis (RO) are recommended to improve their removal. In this context, the present study aims to evaluate the removal of five Non-steroidal anti-inflammatory drugs (NSAIDs), analgesics and anti-pyretic: acetaminophen, ibuprofen, dipyrone, diclofenac, and caffeine by NF and RO process. NF90 and BW30 membranes were characterized by scanning electron microscopic (SEM), contact angle and zeta potential. Retention of PhACs was evaluated considering pH feed solution and operating pressure. Results indicated that NF90 membrane was efficient to reach over 88% rejection for some selected PhACs. Best results were obtained at 20 bar and pH 5 with more than 90% of rejection. For nonionic compounds acetaminophen and caffeine, exclusion by size is the main mechanism for rejection by NF90 membrane, whereas for anionic compounds ibuprofen, dipyrone, and diclofenac, electrical exclusion predominated at pH 5 and 7. Rejection results with NF90 membrane show that hydrophobicity has an important role due to the adsorption on the membrane surface. Conversely, lower rejections for hydrophilic compounds were observed due to the adsorption/diffusion mechanisms, both in NF90 and RO at pH 5.
118 citations
TL;DR: In this article, treatment of two different types of whey by using different membrane processes namely ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO) was investigated to produce cleaner discharge and to recover the proteins in whey for re-use.
118 citations