Results 261 to 270 of about 2,312,293 (309)

Removal of chloride from water and wastewater: Removal mechanisms and recent trends

Science of The Total Environment, 2022
Increased chloride concentration can cause salinization, which has become a serious and widespread environmental problem nowadays. This review aims at providing comprehensive and state-of-the-art knowledge and insights of technologies for chloride removal.
Li, Yiming, Yang, Zhongzhu, Yang, Kaihua, Wei, Jingjing, Li, Zihao, Ma, Chi, Yang, Xu, Wang, Tantan, Zeng, Guangming, Yu, Guanlong, Yu, Zhigang, Zhang, Chang   +11 more
openaire   +4 more sources

Removal of nanoplastics in water treatment processes: A review

Science of The Total Environment, 2022
Nanoplastics are drawing a significant attention as a result of their propensity to spread across the environment and pose a threat to all organisms. The presence of nanoplastics in water is given attention nowadays as the transit of nanoplastics occurs through the aquatic ecosphere besides terrestrial mobility.
M. Keerthana Devi, N. Karmegam, S. Manikandan, R. Subbaiya, Hocheol Song, Eilhann E. Kwon, Binoy Sarkar, Nanthi Bolan, Woong Kim, Jörg Rinklebe, M. Govarthanan   +10 more
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Removal of water pollutants by Lemna gibba

The Chemical Engineering Journal and the Biochemical Engineering Journal, 1994
Abstract Duckweed can be used in water treatment systems to remove various pollutants such as ammonia and phosphate. In this work the influence of temperature and concentration of pollutants on the rates of removal of ammonia, phosphate, and organic load was investigated experimentally.
N. Boniardi, G. Vatta, ROTA, RENATO, NANO, GIUSEPPE, S. Carrà   +4 more
openaire   +2 more sources

Removal of azobenzene from water by kaolinite

Journal of Hazardous Materials, 2009
The use of natural kaolinite clay to remove azobenzene from aqueous solutions under different pHs, ionic strengths, initial solid mass used, and initial solution concentrations was investigated. Batch kinetic experiments showed that the adsorption of azobenzene onto kaolinite followed a pseudo-second-order kinetics with an initial rate of 7.2 mg/g-h ...
Xiaoling, Zhang, Hanlie, Hong, Zhaohui, Li, Junfang, Guan, Laura, Schulz   +4 more
openaire   +2 more sources

Radium removal from drinking water

Nature, 1975
RADIUM is absorbed from natural waters on to acrylic fibres impregnated with oxides of manganese1. This extraction technique, developed for oceanographic studies, is also effective in removing radium from drinking water.
W S, Moore, L M, Cook
openaire   +2 more sources

Removing Viruses from Water by Polyelectrolytes

Nature, 1967
Polymers based on divinylbenzene-crosslinked styrene/maleic anhydride copolymer can adsorb 100 per cent tobacco mosaic virus and more than 99.99 per cent polio virus from aqueous suspensions. The technique may be useful for preparing potable water by removing viral infectivity which may survive conventional treatment. It may also be useful in detecting
J H, Johnson, J E, Fields, W A, Darlington   +2 more
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Removal of arsenic from water by electrocoagulation

Chemosphere, 2004
In the present study electrocoagulation (EC) has been evaluated as a treatment technology for arsenite [As(III)] and arsenate [As(V)] removal from water. Laboratory scale experiments were conducted with three electrode materials namely, iron, aluminum and titanium to assess their efficiency. Arsenic removal obtained was highest with iron electrodes. EC
RATNA KUMAR, P, CHAUDHARI, SANJEEV, KHILAR, KC, MAHAJAN, SP   +3 more
openaire   +3 more sources

Removal of Cadmium from Water by Water Hyacinth

Journal of Environmental Engineering, 1987
Heavy metals and other trace contaminants enter surface and groundwater in various ways and adversely affect fauna and flora. Thus, the removal of such impurities is necessary. The heavy metals, in general, are either precipitated as sulfides or oxides. In a few cases, ion exchangers have also been used to remove metallic ions.
Om Prakash, Indu Mehrotra, Pradeep Kumar
openaire   +1 more source

On Removing Food and Water: Against the Stream

The Hastings Center Report, 1984
A s infants we were given food and drink when we were too helpless to nourish ourselves. And for many of us a day will come before we die when we are once again too helpless to feed ourselves. If there is any way in which the living can stand by those who are not yet dead, it would seem to be through the continued provision of food and drink even when ...
openaire   +2 more sources

Removal and Inactivation of Cryptosporidium from Water

2013
Water is a major route of transmission for Cryptosporidium and oocysts commonly occur in surface and recreational waters as a consequence of fecal contamination from Wildlife or anthroponotic sources. There are many characteristics possessed by Cryptosporidium oocysts that allow them to persist in aquatic environments, including recreational waters ...
Paul Monis, Brendon King, Alexandra Keegan   +2 more
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