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Now showing items 11-17 of 17
Suitability of selected vegetable tannins traditionally used in leather making in Tanzania
(Elsevier Ltd., 2020-04-01)
The use of chromium salt has dominated in tanning industry worldwide due to its high versatility in quality leather production. However, Environmental concerns of chromium have shifted the interest of current research to ...
Life cycle analysis of potential municipal solid wastes management scenarios in Tanzania: the case of Arusha City
(Springer Nature, 2021-01-07)
The municipal solid wastes (MSW) management technologies in most cities of developing countries pose a continuous risk of contaminating the environment and affecting human health adversely; often because MSW technologies ...
Two-stage banana leaves wastes utilization towards mushroom growth and biogas production
(Springer Nature Switzerland AG., 2020-11-20)
Banana leaves wastes (BL) were subjected to fungal treatment using Pleurotus ostreatus to produce edible mushrooms and biogas in the anaerobic digestion process. Effects of fungal treatment on mushrooms production, lignin ...
Approaches to the mitigation of ammonia inhibition during anaerobic digestion – a review
(IWA Publishing, 2020-06-03)
The digestion process of organic waste rich in high ammonia content has always been a gridlock during methanogenesis process. The free ammonia may increase inhibition/toxicity, which in turn affects the microbial community ...
Evaluating the level of ammonia and sulfide in the liquid phase during anaerobic digestion of slaughterhouse waste operating at mesophilic scale digester—the impact of inhibition and process performance
(AIMS Press, 2020-07-10)
The performance of experimental batch-reactor loaded with slaughterhouse waste at mesophilic temperature was investigated as well as the inhibition of both ammonia and sulfide concentration in the aqueous phase. The digester ...
Synthesis and FTIR Characterization of Mg-Hydroxylapatite Derived from Dolostone with High Dolomite Mineral Content
(University of Dar es Salaam, 2020-08-24)
We present the synthesis of magnesium-substituted hydroxylapatite starting from locally available
dolostone. The apatite was prepared by a reaction between heat pre-treated dolostone powder with
phosphoric acid, maintained ...
Effect of mixing ratios of natural inorganic additives in removing ammonia and sulfide in the liquid phase during anaerobic digestion of slaughterhouse waste
(Elsevier, 2021-06-01)
In this study, the efficacy of inorganic additives in the removal of total ammonia nitrogen (TAN) and sulfide in the aqueous phase of slaughterhouse waste undergoing anaerobic digestion in the batch reactor was investigated. ...