Results 21 to 30 of about 346,997 (316)

Hydrometallurgy leaching of manganese from electrolytic manganese anode slime using hydrogen peroxide as reducing agent

open access: yes工程科学学报, 2023
Manganese is one of the important strategic resources in China, and there is a saying that “no manganese, no steel”. In 2020, China’s output of electrolytic metal manganese was 1501300 tons, accounting for 96.5% of the global output.
Jun-jie ZHAO   +5 more
doaj   +1 more source

Effect of ultrasonic, thermal and ozone pre-treatments on waste activated sludge solubilisation and anaerobic biodegradability [PDF]

open access: yes, 2006
In order to enhance the efficiency of anaerobic digestion, the effects of ultrasounds, ozonation and thermal pre-treatment have been studied on waste activated sludge.
Xin Tian   +7 more
core   +1 more source

Biodrying for mechanical-biological treatment of wastes: A review of process science and engineering [PDF]

open access: yes, 2009
Biodrying is a variation of aerobic decomposition, used within mechanical–biological treatment (MBT) plants to dry and partially stabilise residual municipal waste.
Drew, Gillian H.   +4 more
core   +1 more source

Carbon black as an alternative cathode material for electrical energy recovery and transfer in a microbial battery

open access: yesScientific Reports, 2017
Rather than the conventional concept of viewing conductive carbon black (CB) to be chemically inert in microbial electrochemical cells (MECs), here we confirmed the redox activity of CB for its feasibility as an electron sink in the microbial battery (MB)
Xueqin Zhang   +8 more
doaj   +1 more source

Hazardous Waste Treatment Technologies [PDF]

open access: yesWater Environment Research, 2001
This review covers publications in biological, chemical, and physical technologies for the treatment of hazardous wastes and remediation of contaminated sites published in 2009.
Po Yen, Wang, Minghua, Li, C P, Huang
openaire   +3 more sources

Impact of technological innovation and regulation development on e-waste toxicity: a case study of waste mobile phones

open access: yesScientific Reports, 2018
Technology innovation has accelerated progress in Information and Communications Technology (ICT), especially in the mobile phones sector. Concurrently, local, national, and international governments are enforcing stricter regulations to protect natural ...
Yu Chen   +5 more
doaj   +1 more source

Comparative analysis of recycling modes of power batteries based on extended producer-responsibility principle

open access: yesCircular Economy, 2022
To improve the effectiveness of recycling, echelon utilization, and recovery mechanism of waste power batteries (WPBs), 12 recycling modes were proposed based on extended producer-responsibility principle. By employing profit and sensitivity analyses, we
Shuyuan Chen   +3 more
doaj   +1 more source

Aerobic Treatment of Dairy Wastes [PDF]

open access: yesApplied Microbiology, 1953
Disposal of dairy wastes is of importance to all branches of the dairy industry, from the simple shipping and bottling of milk through the manufacture of milk products, including cheese, butter, ice cream, and processed milk. Drainage and washings are the main sources of wastes, with an occasional addition of surplus buttermilk, whey or spoiled ...
N, PORGES, L, JASEWICZ, S R, HOOVER
openaire   +2 more sources

Dairy waste water treatment by combining ozonation and nanofiltration

open access: yes, 2007
The aim of this investigation was to examine the applicability of the membrane technique and the effect of preozonation in dairy waste water treatment technology.
László, Zsuzsanna   +3 more
core   +1 more source

Upgrading iron and removing phosphorus of high phosphorus oolitic iron ore by segregation roasting with calcium chloride and calcium hypochlorite [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2019
The iron-bearing ore, existing in the form of oolite, was mainly composed of hematite, limonite, daphnite, and collophane. The harmful element phosphorus content was 1.56%, belonging to high phosphorus ooliticiron ore in western Hubei.
Xiao J.   +7 more
doaj   +1 more source

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