Fly ash is one of the surplus products created in the combustion process. In industry, fly ash usually refers to ash produced during combustion of coal and is usually taken from the chimneys of thermal power plants. Currently, in Vietnam burning coal to generate electric energy are necessary. Fly ash discharged occupied huge area and polluting the environment. Thus the study of fly ash recyclin...

OBJECTIVES The present study analyzes metal contamination in sediment of the East Kolkata Wetlands, a Ramsar site, which is receiving a huge amount of domestic and industrial wastewater from surrounding areas. The subsequent uptake and accumulation of metals in different macrophytes are also examined in regard to their phytoremediation potential. METHODS Metals like cadmium (Cd), copper (Cu),...

Alfalfa hay is, or should, be highly valued as a dairy cattle feed due to its relatively high (for a forage) crude protein (CP) level which has a low rumen soluble fraction and a relatively high rumen escape fraction which contains a high level of the key amino acid lysine. It should also be valued for its high level of rapidly rumen digested pectin which has a high cation exchange capacity (CE...

The objectives of this study were to assess the relative importance of either biotic or abiotic oxidation of biomassderived black carbon (BC) and to characterize the surface properties and charge characteristics of oxidized BC. We incubated BC and BC–soil mixtures at two temperatures (30 C and 70 C), with and without microbial inoculation, nutrient addition, or manure amendment for four months....

Four proximal soil sensors were tested at four smallholder farms in Embu County, Kenya: a portable X-ray fluorescence sensor (PXRF), a mobile phone application for soil color determination by photography, a dual-depth electromagnetic induction (EMI) sensor, and a LED-based soil optical reflectance sensor. Measurements were made at 32-43 locations at each site. Topsoil samples were analyzed for ...

Vegetable cultivating systems in Sri Lanka are characterized by intensive and highly commercialized with very high agricultural inputs. Diagnosing soil fertility levels is essential to supply plant nutrients a complete balanced manner minimizing environmental pollution. The objective of this study was assess chemical properties two vegetable central highlands Lanka. Study conducted contrasting ...

Cotton is the main cash crop in northern Côte d’Ivoire, where intensive cultivation along with low external inputs has led to a decline yields due soil degradation. The present study aims assess evolution of fertility during 2013 and 2021 periods cotton basin area d’Ivoire. More specifically, (i) identified limiting physico-chemical parameters fertility, (ii) analysed state For this purpose, to...

The aim of this study was to understand the interactions between alkylammonium cations present as monomers and micelles and a clay mineral, montmorillonite, to develop slow release formulations of anionic herbicides, such as sulfometuron (SFM) whose leaching in soils is an environmental and economic problem. In the proposed formulation the herbicide is incorporated in positively charged micelle...

Movement of NH(4)(+) below animal waste lagoons is generally a function of the whole-lagoon seepage rate, soil mineralogy, cations in the lagoon liquor, and selectivity for NH(4)(+) on the soil-exchange sites. Binary exchange reactions (Ca(2+)-K(+), Ca(2+)-NH(4)(+), and K(+)-NH(4)(+)) were conducted on two soils from the Great Plains and with combinations of these soils with bentonite or zeolit...

Urban landfill leachate is a high strength wastewater characterized by high concentrations of recalcitrant organic compounds, ammonia and, increasingly, arsenic. The aims of this study were the review on membrane bioreactor, ion exchange and adsorption method for landfill leachate treatment. Membrane bioreactor (MBR) can be used for wastewater and landfill leachate treatment. The most important...