In this study, alkali modified coal fly ash (MFA) and unmodified coal fly ash (unMFA) were applied, as pit latrine additives to eliminate faecal coliforms from synthetic faeces (SF), which were used as a proxy for real pit latrine waste. The X-ray diffractogram spectrum showed that mullite and quartz were converted into hydroxysilicate. Two separate studies were run over a period of seven weeks. The first study had the treatment combinations of SF: MFA, SF: unMFA, SF: MFA: synthetic greywater (SGW), SF: unMFA: SGW, SF: MFA: synthetic urine (SU), SF: unMFA: SU and SF (as a control) while the second study consisted of the combinations of SF: MFA, SF: unMFA, SF: MFA: lime (6g), SF: unMFA: lime (12g), SF: MFA: lime (24g), SF: unMFA: lime (50g) respectively. The pH in both studies ranged between 7.07 and 12.38. The average initial concentrations of faecal coliforms from each of the experimental treatments ranged from 9.96 x 106 to 1.06 x107 ± 2 x106 cfu/g of dry weight on the first day of the experiment. However, they were removed completely after 7 days with no regrowth for a period of 7 weeks indicating removal of faecal coliforms to level below the detection limits of the enumeration technique used. On the first study on the fourth week, faecal coliforms reappeared in the pit latrine treatment SF: MFA: SU (5.60 x 105 ± 8.66 x 105 cfu/g dry weight) followed by SF: MFA (1.78 x 105 ± 2.89 x 105 cfu/g dry weight) but thereafter could not be detected (detection limit was 545 cfu/ g dry weight of SF) for the remainder of the study. The concentration of chemical oxygen demand (COD), ammonium, phosphate ranged between 6.35 x102 ± 1.26x102 – 22.11 x102, 0.116±0.091 – 21.38 x102 ± 1.77x102 and 1.35x102 ±0.348 – 31.18x102 ±0.348 mg/g of dry weight respectively while nitrate concentration was zero. In conclusion, both studies showed that MFA and unMFA can be used as pit latrine additives for the removal of pathogenic microorganisms, however, the contents of the pit latrine might have an influence on how fast and effective the additive might be as shown in the first study where SU or SGW were introduced.

Human actions are ambivalent in nature and this in turn has an impact on all components of socio-ecological systems. Their ambivalence results from the fact that human actions have both positive and negative outcomes and properties, which occur and manifest concurrently in the ontological realm of human existence. In terms of space–time, both micro-geography and macro-geography of human existence are intertwined during the COVID-19 pandemic, thus affecting pre- and post-pandemic space–time continuum. The utilitarian qubit can be used to describe the nature of human existence, i.e., Homo sapiens has always been experiencing a state of existence where pain and pleasure are co-extensive. In this state, it is impossible to establish to what extent pain, and to what extent pleasure, will have a definitive impact on our status as individuals and humanity as a species. In this article, the authors explore how the record of an individual’s life before and after the COVID-19 pandemic has been impacted by the wellbeing and actions of other humans and prior to one’s existence. Drawing on the utilitarian qubit, the COVID-19 pandemic, and its impacts on the members of Homo sapiens, can be understood as a partial outcome of the cumulative actions of humanity on the biosphere and other elements of the global ecosystem (the Age of the Anthropocene). We argue that this paper is also useful to foster disaster preparedness and resilience in the pandemic and post-pandemic era, at micro- and macro-geographical interfaces of human existence in the 21st century. The existence of individual members of Homo sapiens and humanity as a species is unfolding at the boundary between two levels: fundamental reality and situational reality. The result is the historical accumulation and ontological interconnectedness of humanity’s activities with one’s own actions. Pain and pleasure resulting from the COVID-19 pandemic and the Age of Anthropocene, as well as the right and wrong consequences of humanity’s actions, are posited here to be symptoms of the Anthropocenic (phase of) epidemiological transition.

The virocell concept of a viral lifecycle maintains that there are two main stages in a virus’s existence. The one is a passive state of a virion, which is not a living entity, and the second one is the virocell. In the state of virocell, a virus infects a host’s cell and hijacks its cellular machinery to achieve its own replication. Depending on the way that a cell reacts to a viral infection, it can have its activities or character as an individual living organism, suppressed completely, to some extent or not at all. In the article, the authors propose that there is analogy between the virocell theory as applied to the SARS-CoV-2 virus lifecycle and the sense of self for humans in the coronavirus pandemic world, and the post-COVID19 space-time. Methodology adopted is a combination of simile of Wittgenstein’s parallel cases, autoethnography, the virocell concept of the SARV-CoV-2 lifecycle and a multi-individual nature of one’s self based on the principles of the assemblage theory. The nature of human existence and the sense of self is defined as a relational notion which is tied to the societal educational standards, phases of developments of a human being and their fluid sense of self. The COVID19 pandemic space-time provides, in fact it demands that humanity undergoes an ongoing education of itself to maintain a productive and resilient movement forward for self and society, as an equivalent of the ribovirocell of a human cell infected with the coronavirus. The notion of speed will have to be unpacked and investigated further, which is done in part in a follow up article and is anchored as the defining characteristics of the post-COVID19 world.

The current article is an attempt by the authors to present a bioethical case, or rather a search being undertaken to develop tools to interpret the novel ontological realm which has been created, and continues to be transformed in real time, by the COVID19 pandemic and its aftermath. The ontological realm is new, but the physical features of the world and the human in it are partially constants and identical to the previous realm parameters, the pre-COVID19 space-time. The question of existence in the new ontological realm is…how can the continuum of Homo sapiens and its existence be sustained in this new realm? The tools being developed use of previous information and knowledge of the members of Homo sapiens as a starting point and source of metaphors as tools to facilitate existence in the new realm. In this way, existing knowledge, which is held by individual members of Homo sapiens, and which exists and continues being created in the continuum of Homo sapiens, can be the foundation for the creation of new knowledge about the post-COVID19 realm and the individual and collective comprehension of humans of it and in it. Conceptual metaphors, the creation of compound metaphor and the prospective dialectic are suggested by authors as a possible epistemic implementation mechanisms in this context. The adaptation of humanity, its imagination and some professions are used to demonstrate the case for the ‘new science of human existence’ in the post-COVID19 world.