Production of biodegradable pots from cattle manure and wood waste: effects of natural binders on mechanical performances and biodegradability
2022
Manafi-Dastjerdi, Mohammad | Ebrahimi-Nik, Mohammadali | Rohani, Abbas | Lawson, Shaneka
The present study seeks to investigate the use of husbandry waste and sawdust in the construction of degradable pots as a suitable alternative to plastic pots. Six mixture ratios of cattle manure and sawdust (85:15, 80:20, 75:25, 70:30, 65:35, and 60:40) were used along with three types of natural binders (sheep’s wool, cornstarch, and sheep’s wool:cornstarch) in phase I of the project. Phase I was replicated in triplicate to identify the best composition for each binding agent. International standards dictate that evaluations of biological pots include investigations into thickness swelling, internal bonding, and water absorption. Mean comparison of the resultant factorial data using the Tukey and TOPSIS methods indicated that production of bio-pots with a mixture of 80% manure and 20% sawdust may provide the best results for all three pot types. Phase II of the project involved using field experiments and cultivation of tomato plants in direct comparison to a commercial sample pot. The optimal pots for each binding agent in phase I were used in the evaluation. Field tests showed pots produced with 80% manure and 20% sawdust using cornstarch for binding adhesion performed best in terms of degradability and physical and mechanical properties.
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