Humic Acid-like Matter Isolated from Green Urban Wastes. Part I: Structure and Surfactant Properties
نویسندگان
چکیده
A humic acid-like substance (cHAL2) isolated from urban green wastes before composting was compared to a humic acid-like substance (cHAL) isolated from a mix of urban organic humid waste fraction and green residues composted for 15 days. cHAL2 was found to contain more aliphatic and O-alkyl C atoms relative to aromatic, phenol, and carboxyl C atoms, and to yield higher critical micellar concentration (cmc = 0.97 g L) and surface tension at the cmc (γcmc = 37.8 mN/m) in water than cHAL (cmc = 0.40 g L; γcmc = 36.1 mN/m). The results point out that biomass wastes may be an interesting source of biosurfactants with diversified properties that depend on the nature of waste and on its process of treatment.
منابع مشابه
Photogeneration of Reactive Oxygen Species by SBO and Application in Waste-Water Treatment
© The Author(s) 2015 A. Arques and A. Bianco Prevot (eds.), Soluble Bio-based Substances Isolated From Urban Wastes, SpringerBriefs in Green Chemistry for Sustainability, DOI 10.1007/978-3-319-14744-4_2 Abstract Soluble bio-based substances (SBO) extracted from urban bio-wastes have similar chemical properties to humic substances (HS) present in natural waters and soils. Therefore, SBO are also...
متن کاملLand suitability assessment for urban green space using AHP and GIS: A case study of Ahvaz parks, Iran
Soil is a vital parameter for planting design in urban green spaces especially in adverse climate conditions. In this study, the utilization of analytic hierarchy process (AHP) in surveying land suitability for urban green space from measured criteria like suitability indices, including physical (i.e. clay, silt, sand, bulk density, penetration resistance), chemical (i.e. electrical conductivit...
متن کاملInvestigation the Efficiency of Activated Carbon Coated with ZnO Nanoparticles Prepared by Green Synthesis Method in Removing Humic Acid from Aqueous Solutions: Kinetics and Isotherm Study
Background & objective: The presence of natural organic matter in water sources creates various problems, especially in common water treatment process. These compounds cause unfavorable taste and odor in water and are among the most important precursors of water disinfection by-products. This study was carried out to evaluate the efficiency of activated carbon (AC) and activated carbon modified...
متن کاملOrganic matter from biofilter nitrification by high performance size exclusion chromatography and fluorescence excitation-emission matrix
A combination of high performance size exclusion chromatography with organic carbon detector and ultraviolet detector coupled with peak-fitting technique and fluorescence excitation-emission matrix spectrometry applied fluorescence regional integration method was conducted to determine the characteristics of organic matter during nitrification. The batch scale of bionet nitrification without or...
متن کاملEvaluation of the Effect of Various Amounts of Humic Acid on Yield, Yield Components and Protein of Chickpea Cultivars (Cicer Arietinum L.)
Objective: In addition to the role of organic matter in plant nutrition, this material improves soil quality, physical structure, ventilation and water supply, and ease of penetration and expansion is rooted deep in the soil surface. Effects of organic matter due to climatic factors, soil characteristics may vary from region to region, resulting in organic materials management must be given to...
متن کامل