Uranium(VI) Ions Removal from the Aqueous Environment: Current Treatment Technologies and Its Future Prospects

Dyes (colorants) are used in many industrial applications, and effluents of several industries contain toxic dyes. Dyes exhibit toxicity to humans, aquatic organisms, and the environment. Therefore, dyes containing wastewater must be properly treated before discharging to the surrounding water bodies. Among several water treatment technologies, adsorption is the most preferred technique to sequester dyes from water bodies. Many studies have reported the removal of dyes from wastewater using biochar produced from different biomass, e.g., algae and plant biomass, forest, and domestic residues, animal waste, sewage sludge, etc. The aim of this review is to provide an overview of the application of biochar as an eco-friendly and economical adsorbent to remove toxic colorants (dyes) from the aqueous environment. This review highlights the routes of biochar production, such as hydrothermal carbonization, pyrolysis, and hydrothermal liquefaction. Biochar as an adsorbent possesses numerous advantages, such as being eco-friendly, low-cost, and easy to use; various precursors are available in abundance to be converted into biochar, it also has recyclability potential and higher adsorption capacity than other conventional adsorbents. From the literature review, it is clear that biochar is a vital candidate for removal of dyes from wastewater with adsorption capacity of above 80%.

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Review article: current treatment and future prospects for the management of acute coronary syndromes

Central African Journal of Medicine ◽

10.4314/cajm.v45i8.8489 ◽

1999 ◽

Vol 45 (8) ◽

Author(s):

K Bhagat

Keyword(s):

Acute Coronary Syndromes ◽

Current Treatment ◽

Review Article ◽

Future Prospects ◽

Coronary Syndromes

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Current Treatment Technologies for Removal of Microplastic and Microfiber Pollutants From Wastewater

Wastewater Treatment ◽

10.1016/b978-0-12-821881-5.00011-8 ◽

2021 ◽

pp. 237-251

Author(s):

Sunanda Mishra ◽

Alok Prasad Das

Keyword(s):

Current Treatment ◽

Treatment Technologies

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Coffee processing wastewater treatment: a critical review on current treatment technologies with a proposed alternative

Applied Water Science ◽

10.1007/s13201-019-1091-9 ◽

2019 ◽

Vol 10 (1) ◽

Cited By ~ 7

Author(s):

E. M. Ijanu ◽

M. A. Kamaruddin ◽

F. A. Norashiddin

Keyword(s):

Organic Waste ◽

Current Treatment ◽

Toxic Chemicals ◽

Contaminated Water ◽

Wastewater Management ◽

Biological Degradation ◽

Time Consumption ◽

Advantages And Disadvantages ◽

Treatment Technologies ◽

Exchange Technique

AbstractCoffee is globally the second largest most traded commodity after petroleum, and this has facilitated many countries to grow and produce coffee in commercial quantity. The production processes uses large volume of water which comes out as contaminated water. The presence of toxic chemicals like tannins, phenolic and alkaloids inhibits biological degradation. Microbial processes break down the organic substances released into water bodies slowly, using up the oxygen from the water (COD). As demand for oxygen needed to break down organic waste in a wastewater begins to exceed supply, a decrease in oxygen needed to combine with chemicals (COD) slowly creates anaerobic condition. The review looks at few of the current methods (physicochemical and biological) used in coffee wastewater management, their advantages and disadvantages including, high cost implication, complex operation and more time consumption among others; furthermore, the review suggests ion exchange technique as a better alternative based on its capacity to act as both an ion exchanger and absorber.

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