Universal Journal of Agricultural Research Vol. 12(1), pp. 169 - 179
DOI: 10.13189/ujar.2024.120116
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Heavy Metal Levels and Target Hazard Quotients of Ipomoea aquatica Grown in Soils Applied with Stabilized Biosolids


Eva R. Orlina 1,*, Ariel G. Mactal 2, Purisima P. Juico 2, Maria Luisa T. Mason 2, Danila S. Paragas 3, Jacqueline D. Maquirang 4
1 Department of Plant Science, College of Agriculture, Forestry and Environmental Sciences, Aklan State University, Philippines
2 Department of Soil Sciences, College of Agriculture, Central Luzon State University, Philippines
3 Department of Chemistry, College of Arts and Sciences, Central Luzon State University, Philippines
4 Production Engineer, Boracay Island Water Company Incorporated, Philippines

ABSTRACT

Though rich in nutrient and organic materials, biosolids contain heavy metals, organic pollutants, and substances of emerging concerns. This study evaluated the effects of stabilized biosolids from Sewage Treatment Plant in Boracay Island on selected soil properties, heavy metals and target hazard quotients associated with the Ipomoea aquatica consumption. The field experiment was laid out in a randomized complete block design (RCBD) in three replications. A total of 21 experimental microplots with an area of 1 m × 2 m were used. Treatments were: Natural Field Condition (T1), Natural Stabilization (T2), Photocatalytic Stabilization (T3), Effective Microorganism Stabilization (T4), Indigenous Microorganism Stabilization (T5), Vermistabilization (Eudrilus eugeniae + Gliricidia sepium leaves + Oryza sativa straw) (T6) and Inorganic Fertilizer Recommended Rate (30-30-30 kg NPK/ha) (T7). Results showed that the levels of heavy metals cadmium (Cd), copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn) in the stabilized biosolids and soils were within the permissible limits set by the Department of Environment and Natural Resources Administrative Order (DAO) 2013-22. The biosolids application did not show phyto availability of heavy metals. The target hazard quotient (THQ) values of heavy metals in the plants were <1, indicating no harmful effects on the consumers' lifetime.

KEYWORDS
Heavy Metals, Target Hazard Quotient, Stabilized Biosolids, Ipomoea aquatica

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Eva R. Orlina , Ariel G. Mactal , Purisima P. Juico , Maria Luisa T. Mason , Danila S. Paragas , Jacqueline D. Maquirang , "Heavy Metal Levels and Target Hazard Quotients of Ipomoea aquatica Grown in Soils Applied with Stabilized Biosolids," Universal Journal of Agricultural Research, Vol. 12, No. 1, pp. 169 - 179, 2024. DOI: 10.13189/ujar.2024.120116.

(b). APA Format:
Eva R. Orlina , Ariel G. Mactal , Purisima P. Juico , Maria Luisa T. Mason , Danila S. Paragas , Jacqueline D. Maquirang (2024). Heavy Metal Levels and Target Hazard Quotients of Ipomoea aquatica Grown in Soils Applied with Stabilized Biosolids. Universal Journal of Agricultural Research, 12(1), 169 - 179. DOI: 10.13189/ujar.2024.120116.