TY - JOUR VL - 210 UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85124407064&doi=10.1016%2fj.envres.2022.112923&partnerID=40&md5=4609c580dc1988566f6a4e8ce86edb4b JF - Environmental Research A1 - Liew, C.S. A1 - Mong, G.R. A1 - Abdelfattah, E.A. A1 - Raksasat, R. A1 - Rawindran, H. A1 - Kiatkittipong, W. A1 - Mohamad, M. A1 - Ramli, A. A1 - Yunus, N.M. A1 - Lam, M.K. A1 - Da Oh, W. A1 - Lim, J.W. SN - 00139351 PB - Academic Press Inc. Y1 - 2022/// KW - carbohydrate; protein KW - activated sludge; chemical oxygen demand; degradation; fly; growth rate; larva; palatability; temperature effect; waste KW - activated sludge; Article; chemical oxygen demand; controlled study; feeding; humic substance; hydrolysis; maggot; nonhuman; nutrient; palatability; temperature; animal; Diptera; larva; sewage KW - Animals; Diptera; Humic Substances; Larva; Nutrients; Sewage ID - scholars16628 TI - Correlating black soldier fly larvae growths with soluble nutrients derived from thermally pre-treated waste activated sludge N2 - Black soldier fly larvae (BSFL) have been deployed to valorize various organic wastes. Nonetheless, its growth rate whilst being offered with waste activated sludge (WAS) is not promising, likely by virtue of the presence of extracellular polymeric substancesâ?? structure in WAS. In this work, the WAS were first thermally pre-treated under different treatment temperatures and durations before being administered as the feeding substrates for BSFL. The results showed the thermal pre-treatment could improve WAS palatability and subsequently, enhance the growth of BSFL especially after the pre-treatments at 75 °C and above. The highest larva weight gained was recorded at 2.16 mg/larva for the WAS sample being pre-treated at 90 °C and 16 h. Furthermore, the samples pre-treated above 75 °C also achieved higher degradation rates, indicating that the 75 °C was a threshold temperature to effectively hydrolyze the WAS. The changes of WAS characteristics, namely, (i) soluble chemical oxygen demand (SCOD), (ii) soluble carbohydrate, (iii) soluble protein, (iv) humic substances and (v) total soluble protein and humic substances, after the thermal pre-treatments were also studied in correlating with the BSFL growth. Accordingly, a model was successfully developed with the highest R2 value attained at 0.95, evidencing the SCOD was the most suitable WAS characteristic to accurately predict the BSFL growth behavior. © 2022 Elsevier Inc. N1 - cited By 13 AV - none ER -