Sorption and Desorption Phenomena of Urban Biowaste-Based Heavy Metals by a Ferralsol

Background: The objective of this study was to examine the adsorption-de- sorption phenomena of heavy metals in an agricultural Ferralsol treated with sewage solid waste at rates usually applied for soil fertility management. Methods: The study was carried out under laboratory conditions, using a Ferralsol sourced from Makerere University Agricultural Research Institute, Kabanyolo (MUARIK). Soil and sewage solid waste were analysed for pH, organic matter, cation exchange capacity and heavy metals (copper, zinc, chromium and lead). Soil was treated with sewage solid waste at input rates of 0, 50, 100, and 150 g per pot (equivalent to 0, 2.5, 5.0 and 7.5 metric tonesm and supplemented with phosphorus. The phosphorus was applied at rates of 0, 0.795, 1.591 and 2.385 g per pot (equivalent to 0, 25, 50 and 75 kg&middotha﹣1, respectively). Batch adsorption was used to study the sorption-desorption of heavy metals on the treated soil and the Langmuir and Freundlich models were used to analyse the data. Results: Adsorption and desorption isotherms fitted better to Freundlich equation than Langmuir model. Chromium was the most sorbed and retained metal; while lead was the least retained overall. The desorption process was virtually irreversible, considering the low amounts of the metals desorbed. Chromium fitted relatively better to both models than the copper, zinc and lead. All the four metals were less desorbed at high metal concentrations. Conclusion: The four metals would not be available at high metal concentrations especially when the application rate used is ≥ 5.0 tones&middotha﹣1 of the sewage solid waste. Thus, the metals would not be available for plant uptake and the chance to contaminate groundwater is very limited especially for chromium.

• Publication year

  2020

• Venue

  Journal of Agricultural Chemistry and Environment

• Publication date

  2020-01-17

• Fields of study

  Chemistry, Environmental Science

• Identifiers
  DOI 10.4236/jacen.2020.91002
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

• The migration and transformation behaviors of heavy metals during the hydrothermal treatment of sewage sludge.

  2016cited by this paper
• Heavy metal distribution and electrical conductivity measurements in biosolid pellets

  2016cited by this paper
• Phosphate adsorption on metal oxides and metal hydroxides: A comparative review

  2016cited by this paper
• The State of Soil Degradation in Sub-Saharan Africa: Baselines, Trajectories, and Solutions

  2015cited by this paper
• Kinetic, equilibrium and thermodynamic investigations of Ni(II), Cd(II), Cu(II) and Co(II) adsorption on barley straw ash

  2014influential reference
• Current status and developing trends of the contents of heavy metals in sewage sludges in China

  2014cited by this paper
• Phosphorus fixing capacity of a volcanic soil on the slope of mount Cameroon

  2013cited by this paper
• Comparative Study of Heavy Metals in Soil and Selected Medicinal Plants

  2013cited by this paper
• Removal of heavy metals from wastewater using agricultural and industrial wastes as adsorbents

  2013cited by this paper
• Kinetics of the adsorption of hexavalent Chromium from aqueous solutions on low cost material

  2012cited by this paper
• Effects of Heavy Metals on Soil, Plants, Human Health and Aquatic Life

  2011cited by this paper
• Global atlas of excreta, wastewater sludge, and biosolids management : moving forward the sustainable and welcome uses of a global resource

  2009cited by this paper
• Competitive sorption and desorption of heavy metals by individual soil components.

  2007cited by this paper
• Soil fertility Status, Management, and Research in East Africa

  2005cited by this paper
• Competitive Adsorption and Desorption of Cadmium, Chromium, Copper, Nickel, Lead, and Zinc by Humic Umbrisols

  2004influential reference
• Selectivity Sequence and Competitive Adsorption of Heavy Metals by Brazilian Soils

  2001cited by this paper
• Trace Elements in Terrestrial Environments: Biogeochemistry, Bioavailability, and Risks of Metals

  2001cited by this paper
• Methods of soil analysis. Part 3 - chemical methods.

  1996cited by this paper
• Heavy metals in soils

  1995cited by this paper
• Environmental Chemistry of Soils

  1994cited by this paper
• Individual sorbent contributions to cadmium sorption on ultisols of mixed mineralogy

  1992cited by this paper
• Reactions controlling heavy metal solubility in soils

  1989cited by this paper
• Distribution coefficients for nickel and zinc in soils

  1986cited by this paper
• Zinc and Copper Sorption and Interaction in Soils

  1983cited by this paper
• Soil chemistry

  1980cited by this paper
• A general treatment and classification of the solute adsorption isotherm. I. Theoretical

  1974cited by this paper
• Methods of soil analysis as used in the OSC Soil Testing Laboratory

  1959cited by this paper
• Colloid and Capillary Chemistry

  1927influential reference
• THE ADSORPTION OF GASES ON PLANE SURFACES OF GLASS, MICA AND PLATINUM.

  1918cited by this paper
• THE CHEMISTRY OF SOILS.

  1892cited by this paper

• No citing papers are available for this paper.