Heavy metals can cause various acute and chronic diseases in human beings. Many investigations are reported on effect of heavy metals on human beings. Heavy metal consumption by fishes and other aquatic animals affects the aquatic life and also people consuming them as food. Physico-chemical methods such as filtration, adsorption are simple and effective. These methods can be used to remove heavy metals from waste water when they are present in very high concentration. Removal method can be selected depending upon the influent concentration, removal required and amount of effluent. Chemical treatment methods like coagulation, chlorination, flocculation, precipitation can be used in many applications due simplicity and robustness. Biological treatment methods like advanced oxidation, trickling filters, aeration, activated sludge, aerobic and anaerobic digestion can be used for wastewater treatments. Many of these methods have limitation in terms of cost effectiveness, efficiency, environmental safety and solid waste generation.

The Lead Guest Editor

Talal AL-Hawary

There seems to be plenty of water in the world; however, less than 1% of this total amount is usable water. Freshwater is cleaned and transferred through the hydrological cycle in nature. Nowadays, this process is insufficient as a result of human activities, discharge of various pollutants into the aquatic environment.

The Lead Guest Editor

Guzide Meltem LULE SENOZ

This special issues focuses on the water conservation and sustainability,mainly including the wastewater treatment,water quality and ecosystems,eutrophication and etc.

The articles of this special issue aim at expanding the water research across lakes and rivers.

The Lead Guest Editor

Xiang Liu

Be the change you want to see in the world

How individuals can help save the planet from climate catastrophe with a guiding hand

Date:

April 1, 2019

Source:

University of Sussex

Summary:

Individuals have as big a role to play in tackling climate change as major corporations but only if they can be encouraged to make significant lifestyle changes by effective government policy, a major new European study has found.

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FULL STORY

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How energy use demands change through different milestones in life.

Credit: HOPE Project

 

 

Individuals have as big a role to play in tackling climate change as major corporations but only if they can be encouraged to make significant lifestyle changes by effective government policy, a major new European study co-authored by a University of Sussex academic has found.

The study notes that voluntary lifestyle choices by well-meaning individuals would only achieve around half the required emission reductions needed to hit the 1.5 C Paris Agreement goal. But the authors suggest that Paris targets could be achieved if voluntary choices were combined with policies that target behavioural change, particularly around eating meat and using fewer cars and airplanes.