Biochar has been found to be suitable for a wide array of applications. However, the repurpose of spent biochar has been far less explored. In this study, we utilized biochar as a pH treatment for wastewater effluent obtained from the pineapple fibre retting process and then used the spent biochar as a growth substrate media in place of commercially and non-reusable substrates, such as peat and rockwool. Biochar produced from wheat straw was used to treat the effluent which was then characterized for macro and micronutrient content. Treatment of effluent with biochar increased the micronutrients in the effluent, such as the iron content by 10-fold and the manganese content by 5-fold. The biochar treated wastewater effluent from the pineapple fibre retting was used as hydroponic medium to grow basil and arugula. The spent biochar was subsequently used as a growth substrate medium as a replacement for rockwool and peat. Initial tests showed successful germination for basil and arugula.

中文翻译：

---

生产用于处理沤制废水的生物炭以及利用废生物炭作为绿叶蔬菜的潜在发芽培养基


生物炭已被发现适合广泛的应用。然而，对废生物炭的重新利用的探索却少之又少。在这项研究中，我们利用生物炭对菠萝纤维沤制过程中获得的废水进行 pH 处理，然后使用废生物炭作为生长基质介质，代替商业和不可重复使用的基质，例如泥炭和岩棉。由麦秆生产的生物炭用于处理废水，然后对其常量和微量营养素含量进行表征。用生物炭处理废水可以增加废水中的微量营养素，例如铁含量增加10倍，锰含量增加5倍。将菠萝纤维沤制后的生物炭处理废水用作水培培养基来种植罗勒和芝麻菜。随后，用过的生物炭被用作生长基质培养基，作为岩棉和泥炭的替代品。初步测试显示罗勒和芝麻菜成功发芽。