Sentence examples for catalyst wastes from inspiring English sources

Because of significant environment implications of spent catalyst wastes, it is imperative to recover valuable metals present in them.

Purification is a process used to eliminate catalyst wastes such as Fe and Ni deposited on the surface of UP-CNTs during its synthesis besides conferring greater stability in aqueous solution due to the oxidized groups attached (COOH, OH, and CO) [ 13].

Under homogeneous reaction conditions, the reaction mixtures (containing BD, alcohol, catalyst, waste water, and glycerol) have to undergo a series of purification, separation, and final disposal processes, which are the drawbacks in high-scale BD production.

Spent catalyst waste derived from a petrochemical refinery was treated to remove oil and other hydroprocessing process impurities aimed to a subsequent reuse.

Moreover, the use of this recycled/modified FCC spent catalyst (RCat-s1) together with an optimal reaction system can be an adequate option since it may lead to a cheaper process with valuable products and can also be further used as a dual recycling of chlorine-containing hazardous waste plastics and a post-use commercial catalyst waste from FCC refinery.

But these platinum-ruthenium catalysts waste about 25% of the energy stored in the fuel as heat.

Two different waste derived catalysts (waste to catalyst, WTC) were studied: soluble PSSA (WTC-PSSA) and solid SiO2-PSSA nanocomposite (WTC-SiO2-PSSA).

These synthetic methods generally suffer from stoichiometric use of toxic and expensive catalysts, waste generation, long reaction times, and/or low product yields with limited substrate scope.

This analysis does not consider the use of recovered metals from catalysts and other wastes for catalyst manufacture and therefore these are likely to be conservative estimates compared to applications where a spent catalyst recycler can be used.

The highest biodiesel yield of 99% was obtained at 6 wt% loading of K/γ-Al2O3 catalyst, using waste cooking oil as feedstock.

The main objective of the present study is to develop heterogeneous catalyst from waste animal bone which is available in plenty amount.