Chromium Species and 3D-Fluorescence Spectroscopy in a Soil Irrigated with Industrial Wastewater

Daury Garcia Pulido, Janete Moran, Rosa Maria Fuentes-Rivas, Francisco Martin-Romero, Reyna Maria Guadalupe Fonseca-Montes De Oca and Jose Ramos

A chapter in Agricultural Waste and Residues from IntechOpen

Abstract: Irrigation of agricultural land with wastewater is beneficial because it incorporates organic matter into the soil, as well as organic ions (such as nitrates, sulfates, and phosphates). However, long-term application causes negative effects such as the accumulation of heavy metals. The wastewater used in the agricultural soils, also incorporates organic refractory compounds, which affect the microbial population and fertility. This chapter aimed to identify the chromium species present in agricultural soil irrigated with wastewater (679.6 mg/L for total chromium and 559.5 mg/L for Cr VI), and characterize the dissolved organic matter in the saturated solution soil. In the soil-saturated solutions (pH 6), the most stable Cr (III) species was Cr2O3. These species precipitate and accumulate in the soil in combination with natural organic matter. The highest accumulation of chromium occurred in the first 10 cm of the soil column. The 3D fluorescence analysis exposes the presence of aromatic proteins, microbiological degradation products, and humic and fulvic acids in the soil profile. The excitation-emission matrix (EEM) showed that Cr (VI) species were complexed with humic acids. In the X-ray diffraction analysis, the species Cr2O5, Cr5O12, CrO2, and Cr7C3 were found at depth with the greatest amount of organic matter.

Keywords: wastewater; chromium; agriculture; irrigation; environment; aromatic proteins; humic acid (search for similar items in EconPapers)
JEL-codes: Q53 (search for similar items in EconPapers)
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.intechopen.com/chapters/61414 (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:ito:pchaps:151931

DOI: 10.5772/intechopen.77181

Access Statistics for this chapter

More chapters in Chapters from IntechOpen
Bibliographic data for series maintained by Slobodan Momcilovic ().