Elements are reviewed using varying methods to check how efficiently they are working to make storage possible. An element like Li in LIBs can store up to 4 volts of power, the strongest behavior ever. It has earned huge attention in the commercial markets all across. Carbon with nitrogen can give a high charge capacity of 487 mAh/g with retention of over 80%. So, it has high-capacity load performance. Na-ion batteries are used for large-scale energy storage. These have up to 372 mAh/g storage capacity. K-ion batteries have fast ionic conductivity so these can have up to 710 mAh/g storage capacity. Ca-ion shows the impressive character toward its feature and gives storage upto 200 mAh/g. Cobalt batteries also show devoting behavior and can be stored up to a capacity 707 mAh/g at the current density of 90 mAh/g. Zn-ions show tremendous character in an aqueous medium. These batteries have a storage capacity of upto 810 mAh/g. Sulfur hybrid battery with lithium gives a reversible capacity of more than 900 mAh/g which is exceptional. All of these and more elements have very much promising behavior for storage with multiple cycles. This review article builds interest and trust in these elements.

Bagasse Fly Ash (BFA) is a rejected material of bagasse that is produced in the sugar industry after burning as a fuel. After this discovery, it is used as a cheap, effective and more reliable adsorbent with the highest elimination rate than activated carbon for various harmful heavy metals and pesticides at different factors like pH, contact time, adsorbent dose, adsorbate concentration, temperature, particle size by Batch and column studies. Pesticides and heavy metals have more adverse effects on human health as well as on the water bodies organisms like many systems as reproduction, urinary, neurological, circulatory, digestive, soil fertility fluctuations as acidity and basicity. Various techniques were utilized for the elimination of heavy metals and pesticides in the past with high expenses as well as difficult to manage. But in future, this review may help in new efficient adsorbent with high removal ability at a low price as well as easy to use than others adsorbents for the elimination of harmful heavy metals and pesticides from wastewater.