Evaluation of ultrasound assisted potassium permanganate pre-treatment of spent coffee waste.
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DOI: 10.1016/j.biortech.2016.11.034
Abstract: In the present study, novel pre-treatment for spent coffee waste (SCW) has been proposed which utilises the superior oxidising capacity of alkaline KMnO4 assisted by ultra-sonication. The pre-treatment was conducted for different exposure times (10,… read more here.
Keywords: spent coffee; pre; coffee waste; pre treatment ... See more keywords
Design of a scheelite production pilot plant for the treatment of spent electroless nickel plating solutions in Field Service Solution S.A.S.: an alternative source for tungsten recycling
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DOI: 10.15446/dyna.v88n218.89035
Abstract: In this contribution, the design considerations to assemble a pilot-plant for tungsten recovery and further conversion into synthetic scheeliteas raw material, as an eco-friendly improvement for the current electroless nickel process in Field Service Solution… read more here.
Keywords: service solution; treatment spent; electroless nickel; pilot plant ... See more keywords
Recovery of Zinc from Treatment of Spent Acid Solutions from the Pickling Stage of Galvanizing Plants
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DOI: 10.3390/su13010407
Abstract: Typical methods for the treatment of waste pickling solutions include precipitation by alkaline reagents, most commonly calcium hydroxide. As a result, large volumes of galvanic sludge form, containing iron, calcium, sulphates, and a relatively small… read more here.
Keywords: zinc; treatment; zinc treatment; recovery zinc ... See more keywords