Poor wastewater management remains a critical health and environmental challenge in most developing countries Sub-Saharan Africa due to the lack of adequate infrastructure for collection treatment. This study evaluated performance methane production full-scale upflow anaerobic sludge blanket (UASB) reactor capacity 18000 m

Design of treatment plants for faecal sludge management systems relies on a comprehensive accurate knowledge FS (faecal sludge) characteristics, but this information is lacking. Developing countries like Ghana, where large proportion the urban population (Accra) rely onsite sanitation systems, face lot FSM management) design challenges as result lack study data physicochemical characteristics raw after primary dewatering. Achieving fully operational chain would imply well understanding and...

Wastewater management remains a major challenge in developing countries due to the lack of adequate infrastructure, making need for economically viable and efficient technologies that can be sustained by emerging economies imperative. The upflow anaerobic sludge blanket (UASB) reactor represents an low-cost technology produces by-products from which valuable resources recovered. This study assessed energy recovery potential form electricity biogas produced full-scale UASB reactor. Biogas...

Faecal sludge management has been a burden for most waste managers particularly in developing countries; yet sure way of preventing the continuous disposal this into drains, bushes water bodies and environs general by treatment. The introduction new treatment plant with UASB technology process faecal much welcomed as an improved solving problems waste; but is not without some challenges. It no design criteria other wastes that it screens from sludge. This paper assessed foreign material load...

The Rehabilitated Mudor sewage treatment plant at James Town was monitored over a period of 4 months (October 2017 to January 2018). This study analyzed the physical, chemical and biological parameters raw treated effluent from plant. result indicates that total removal efficiencies were 98.8%, 91.2%, 62.8%, 28.6%, 81.7%, 43.6%, 82.5% 99.6% for BOD, COD, TSS, Nitrate-Nitrogen, Phosphate-Phosphorus, Ammonia-nitrogen, Sulphate faecal coliform respectively. More than 13 needed be met according...

This study evaluates the applicability of dry faecal sludge activated carbon (DFSAC) as a wastewater pollutant removal technology by employing both laboratory- and large-scale setups. The setups were monitored using effluent from Mudor treatment plant in Accra. DFSAC was produced primary obtained to treat approximately 1000 liters water per hour meet needs backwashing, cleaning, irrigation, flushing purposes. laboratory-scale experiment for period two weeks, while 16 weeks. Physicochemical,...

The present paper deals with the morpho-taxonomic account of some hitherto unknown fresh water algal species hydrocarbon polluted refinery drains Assam. Twenty two taxa class Chlorophyceae, Bacillariophyceae, Euglenineae and Cyanophyceae were identified from three effluent Guwahati Oil Refinery. 11 was dominant group in study sites Oscillatoria genus 8 species.Key words: Fresh algae, Oscillatoria, oil effluent, AssamDOI: 10.3126/on.v7i1.2561Our Nature (2009) 7:139-145

Ketenes are excellent precursors for catalytic asymmetric reactions, creating chiral centers mainly through addition across their C = bonds. Density functional theory (DFT) calculations at the MO6/LACVP* and B3LYP/LACVP* levels of were employed in a systematic investigation peri-, chemo- regio-selectivity transition metal oxo complexes type ReO 3 L ( Cl - , O OCH CH ) to substituted ketenes )(X) [ X H CN Ph ] with aim elucidating effects substituents on mechanism reactions. The [2 + 2]...

The conceptual design of a Tailings Management Facility (TMF) for the proposed Hammond Reef gold mine in Canada investigated two options surface disposal tailings. Geochemical characterisation testing indicated that tailings were not acid generating or metal leaching. Bench scale laboratory tailings’ rheological and dewatering properties carried out to help define thickened at 68% solids content (by mass). test results could be efficiently dewatered mass) using high compression thickeners....

The search for alternative solutions sustainable management of faecal sludge in the area dewatering with biocoagulants/bioflocculants remains unfulfilled. Some available and accessible indigenous plants northern part Ghana have been characterised subsequently evaluated their suitability use as biocoagulant/bioflocculants. Yila (Crossopteryx febrifuga) Voulo (Grewia mollis) were used this study. Three applications from wooden stem, bark, at different treatment concentrations monitored. stem...

The mechanistic aspects of ethylene addition to MO2(CH2)(CH3) (M=Co, Rh, Ir) have been investigated with a Hartree-Fock/DFT hybrid functional at the MO6/LACVP* and B3LYP/LACVP* levels theory elucidate reaction pathways on singlet, doublet triplet potential energy surfaces (PES). In IrO2CH2CH3 complex ethylene, [3 + 2]C,O is most plausible pathway singlet PES, 2]O,O favoured surface whiles stepwise [1 1] involving oxygen atom in first step carbon second PES. For RhO2(CH2)(CH3) complex, [2...

Today’s environment had seen technology taking the center stage in research, and several researches this area assess impact of on society business organizations. This study outlines computer mediated communication (CMC) productivity efficiency faecal sludge industry Sewerage Systems Ghana Limited was used as a case study. Selective sampling technique to identify institution respondents were randomly selected undertake A total 92 engaged questionnaire administered order get required responds....

The addition of TcO 3 L (L = Cl, O – , OCH CH ) to substituted ketenes along various pathways was studied with density functional theory calculations explore the peri-, chemo-, and regioselectivity reactions. In reactions dimethyl ketene, results show that for [1 + 1] form a triplet zwitterionic intermediate is preferred first step; [3 2] C=C across O–Tc–Cl bond step O–Tc–OCH3 step. Cl ketenes, X Ph, CN, Cl; O–Tc–O complex H, while O–Tc–CH3 Reactions involving change in oxidation state metal...

Purpose: The central purpose of the study is to model process capability drift-inherent manufacturing processes by testing efficacy a novel approach that filters trend from raw data before applying statistical control tools. A secondary aim was ascertain intrinsic following filtering.
 Design/Methodology/Approach: Specifically, focused on in nail-wire drawing and tested method for analysing naturally-drifting involves filtering trends appropriate tools verify state process. physical...