Danaee Soroosh, Naghoosi Hamed, Badali Varzaghani Neda, Vo Phong H N
Biotechnology Department, Iranian Research Organization for Science and Technology, Tehran, Iran.
Infectious Diseases Research Center, AJA University of Medical Sciences, Tehran, Iran.
Environ Technol. 2024 Sep;45(23):4887-4899. doi: 10.1080/09593330.2023.2283406. Epub 2023 Nov 24.
Inaccessibility and expensiveness of vital infrastructures are the main problems in some urban and rural areas to supply fresh water, sustainable energy, and wastewater treatment. An effective solution is the integration of several systems in an environmentally friendly technology of the photosynthetic microbial desalination cell (PMDC). The aim of this study is to assess the process characterisation of an algae-based PMDC, which was loaded with a high-strength mixture of human feces and urine (HFS). The PMDC was also able to efficiently remove COD and total nitrogen of HFS by 50% and 94%, respectively. The maximum power density, voltage, and desalination efficiency of 362.5 mW/m², 175.2 mV, and 60% were accomplished. Adequate parameter adjustment led to a remarkable maximum of 2.25 g/L.d in the ion removal rate. In addition, an energy balance was governed showing that zero or positive net energy in PMDC is feasible by replacing the main energy consumers. Based on the results, this type of MDC had a high efficiency for simultaneous saline water desalination and HFS treatment, which makes it attractive for further studies of upscaling and its application in remote areas.
在一些城乡地区，重要基础设施难以到达且成本高昂，这是供应淡水、可持续能源和污水处理的主要问题。一个有效的解决方案是将多个系统集成到光合微生物脱盐电池（PMDC）这种环境友好型技术中。本研究的目的是评估以藻类为基础的PMDC的工艺特性，该电池装载了人类粪便和尿液的高强度混合物（HFS）。该PMDC还能够分别有效去除HFS中50%的化学需氧量（COD）和94%的总氮。实现了362.5 mW/m²的最大功率密度、175.2 mV的电压和60%的脱盐效率。适当的参数调整使离子去除率显著达到最高2.25 g/L.d。此外，通过控制能量平衡表明，通过更换主要能源消耗设备，PMDC实现零净能量或正净能量是可行的。基于这些结果，这种类型的微生物脱盐电池在同时进行盐水脱盐和HFS处理方面具有很高的效率，这使其在扩大规模的进一步研究及其在偏远地区的应用方面具有吸引力。
