Anaerobic digestate as a low-cost nutrient source for sustainable microalgae cultivation: A way forward through waste valorization approach

Microalgae Cultivation on Nutrient Rich Digestate: The Importance of Strain and Digestate Tailoring under PH Control

“…Consequently, the majority of AD plants are under pressure to find alternative solutions for their excess digestate, which is currently stored or buried. Microalgae have been widely studied to remediate wastewater from water treatment processes, aquaculture facilities, and other industries [3][4][5], and there has been a growing interest in utilising their bioremediation properties to tackle the growing digestate issue in Northwest Europe [6][7][8]. Indeed, digestate composition shows a vast potential to support microalgal growth, especially in terms of macronutrients such as phosphorus and nitrogen [9,10], and also other microelements, which, at the right concentrations, can provide essential nutrition to microalgae [11].…”

Trends in mitigation of industrial waste: Global health hazards, environmental implications and waste derived economy for environmental sustainability

“…During the process of composting, organic waste can be converted and mitigated into less harmful or more stabilized form with the help of microbes. This process was facilitated by a wide diversity of bacteria and fungi under aerobic or anaerobic environments (Chong et al, 2021a). In aerobic composting, food and agricultural wastes are decomposed into simpler organic compounds such as ammonia, carbon dioxide, heat, and water whereas anaerobic decomposition produces organic acid, methane, and hydrogen sulfide (SI, 2016).…”

A robust multicriteria analysis for the post-treatment of digestate from low-tech digesters. Boosting the circular bioeconomy of small-scale farms in Colombia

“…The direct application of digestate in soil may not be safe, particularly when the digester works at short hydraulic retention times (HRT) and under psychrophilic conditions [13][14][15][16]. In fact, digestate can still contain pathogens and other harmful substances for soil and human health [17]. In particular, previous studies showed that nutrients and heavy metals concentration in digestates from low-tech digesters implemented in Colombia were suitable for agricultural reuse, except for the lack of organic matter stabilization and pathogens presence [18].…”