a solid state fermentation method was developed for the production of citric acid from date pulp (obtained of date syrup production from the process) by aspergillus niger ptcc 5010. poor yield was obtained when potassium ferrocyanide treated date pulp were used as substrate, but methanol at a 3-4% concentration markedly increased the forma-tion of citric acid from the waste. the optimum range o...

-carotene has been used for years as natural food colorants and in cosmetics and healthcare due to their antioxidant property. The production of -carotene by Mucor azygosporus was evaluated, utilizing deproteinized waste whey filtrate. Since pigments are intracellular, their extraction needed after cell cultivation. In this study, different strategies for extraction of -carotene from M. azyg...

This article reports fibre-optic oxygen measurements on a reactive mine waste heap located in the polymetallic sulphide mine district of Freiberg in south-eastern Germany. The heaped material consists of sulphide-bearing tailings from a processing plant of a lead-zinc mine. Mine waste material was deposited in the water phase after separation of mining ores in a flotation process. The tailing i...

The present paper introduces the steel production and BOF slag processing techniques in Steelmaking Sector of Bayuquan Iron and Steel Subsidiary, Ansteel. The technology of slag tailings utilization has been developed under the consideration of the properties of slag tailing and the characteristics of slag forming in BOF steelmaking operation practice. The processing of the BOF slag includes ho...

coir pith, a byproduct of coconut fibers and waste material from the coir industry, is stable and not easily degradable due to its high lignin content. coir pith takes a decade to decompose thereby posing environmental hazard and disposal problem. pollution by plastics creates an alternative solution to reduce problems. hence the potential use of coir industrial wastes for production of biopla...

background: the first step of solid waste management is identification of its composition and the amount of solid waste production per capita. the aim of this research was to estimate the quantity of solid waste production at mazandaran university of medical sciences and the possibility of recycling. methods: this study was a cross-sectional study. the quantity of solid waste production was mea...

Agricultural waste management is one of the important issues that agricultural producers should consider to increase their income and environmental protection. Therefore, the investigation of factors that reduce the rate of agricultural production wastage as well as citrus production wastage is of utmost consequence in order to manage wastes, reduce environmental degradation and ecosystem destr...

Copper, the essential element required for human body is well-known its profound antibacterial properties, yet salts and oxides of copper metals in mine tailings are reported to be a big burden modern era. Among other oxides, CuO, particular, known have beneficial effects on humans, while slight nanoengineering viz., surface functionalization nanometer-sized oxide shown make some paradigm shift...