The present study aimed to valorize the vegetable waste fraction of organic municipal solid waste (VW) for the production of biobased products viz., reducing sugars (RS), short chain carboxylic acids (SCA)/volatile fatty acids (VFA) and biohydrogen (H₂). Firstly, VW was subjected to pretreatment using physical (PS), chemical (CHE) and physicochemical (PSC) methods for RS production. Among the studied pretreatment methods, PSC resulted in higher RS solubilization with acid catalyzed conditions (1% H₂SO₄/HCl: 42.4/40.8 g/l). Subsequently, resulting organic-rich PSC hydrolysate (RS) was acidogenically fermented for the production of SCA and biohydrogen at varying initial pH conditions (4, 6 7 and 10). Acidogenic fermentation at pH-6 resulted in higher SCA (0.62 g SCA/g RS) and biohydrogen production (1.22 l) followed by pH-10 (0.53 g SCA/g; RS, 0.94 l), pH-7 (0.37 g SCA/g; RS, 0.58 l) and pH-4 (0.32 g SCA/g; RS, 0.27 l). SCA composition at pH 6, 7 and 10 was majorly composed of acetic acid, while butyric acid was found to be dominant at pH 4. SCA's are known to be platform chemicals and hydrogen is a green fuel, production of which using VW accounts the sustainability to current solid waste management practices with the scalable co-product synthesis.

本研究旨在使有机城市固体废物（VW）的蔬菜废物部分增值，以生产生物基产品，即还原糖（RS），短链羧酸（SCA）/挥发性脂肪酸（VFA）和生物氢（ H ₂）。首先，使用物理（PS），化学（CHE）和物理化学（PSC）方法对大众汽车进行预处理，以生产RS。在研究的预处理方法中，PSC在酸催化条件（1％H ₂ SO ₄/HCl：42.4/40.8 g / l）。随后，将所得的富含有机物的PSC水解产物（RS）酸化发酵，以在不同的初始pH条件（4、6、7和10）下生产SCA和生物氢。pH-6的产酸发酵产生更高的SCA（0.62 g SCA / g RS）和生物氢产生（1.22 l），随后是pH-10（0.53 g SCA / g; RS，0.94 l），pH-7（0.37 g SCA） /g；RS，0.58l）和pH-4（0.32g SCA / g； RS，0.27l）。pH 6、7和10时的SCA成分主要由乙酸组成，而丁酸在pH 4时占主导地位。已知SCA是平台化学品，氢是绿色燃料，使用大众汽车生产这种碳具有可持续性。通过可扩展的副产品合成来适应当前的固体废物管理实践。