Investigating the significance of coagulation kinetics on maintaining membrane permeability in an MBR following reactive coagulant dosing

In this study, the impact of kinetically controlled floc growth on sustaining membrane permeability following reactive coagulant dosing was determined using a model particle system. Floc formation was indicated to comprise of two stages following coagulant addition: (i) an initial destabilisation phase which encouraged complexation of protein and polysaccharide; and (ii) entrapment of the coarse model particles (3 µm Firefli™ microspheres) in the polymeric complex during the floc growth phase. Floc growth was characterised by an expected time lag as with conventional flocculation systems and biopolymer aggregation was kinetically favoured. When coagulant was dosed during the filtration cycle, the intermediate biopolymer aggregates (comprised of protein and polysaccharide) were preferentially transported toward the membrane increasing fouling. However, when coagulant was dosed at the onset of filtration, membrane fouling was constrained. It is asserted that by dosing at the onset of filtration: (i) early development of biopolymer aggregation is initiated which inhibits transport of the individual biopolymers to the membrane; and (ii) by dosing coagulant in the absence of a developed polarised layer, formation of biopolymer complexes local to the membrane is obviated. However, when dosing coagulant at the onset of filtration, only limited floc growth occurred which can be explained by the low applied wall shear rate and the absence of a ‘polarised’ region which ostensibly promoted floc growth when coagulant was dosed mid-filtration. Based on results from the model particle system studied, it is proposed that reactive coagulant dosing is best undertaken when: (i) filtration is stopped; (ii) modest shear is applied within the bioreactor to promote coagulant dispersion; and (iii) sufficient contact time is allowed to promote floc growth before commencement of filtration

Burdens of Proof Under Title VII in the 90\u27s: Wards Cove vs. The Civil Rights Act of 1990

Equal employment opportunity ( EEO ) law, despite a roaring start in the late 1960\u27s and early 70\u27s,1 fell into a quiet decline in the 1980\u27s, under the Reagan/Bush administrations

Chevron, Greenwashing, and the Myth of \u27Green Oil Companies\u27

As green business practices grow in popularity, so does the temptation to “greenwash” one’s business to appear more environmentally and socially responsible than it actually is. We examined this phenomenon in an earlier paper, using BP and the Deepwater Horizon catastrophe as a case study and developing a framework for policing dubious claims of corporate social responsibility. This Article revisits these issues focusing on Chevron, an oil company that claims in its advertisements to care deeply about the environment and the communities in which it operates, even as it faces an $18 billion judgment for polluting the Ecuadorean Amazon and injuring its people. After describing Chevron’s “we agree” advertising campaign, the Article sets out our framework for approaching “faux” corporate social responsibility, gauges whether misled consumers and investors might have a legal remedy as a result of Chevron’s advertising claims, and proposes refinements to better regulate corporate greenwashing

Beyond Profit: Rethinking Corporate Social Responsibility and Greenwashing After the BP Oil Disaster

The explosion of the BP-leased Deepwater Horizon and subsequent oil spill stands as an indictment not just of our national energy priorities and environmental law enforcement; it equally represents a failure of Anglo-American corporate law and what passes for corporate social responsibility in business today. Using BP and the disaster as a compelling case study, this Article examines green marketing and corporate governance and identifies elements of each that encourage firms to engage only superficially in corporate social responsibility yet trumpet those efforts to eager consumers and investors. The Article then proposes reforms and protections designed to increase corporate social responsibility, root out greenwashing, and recognize liability for corporate social responsibility frauds on consumers and investors. One of these protections derives from the newly enacted Dodd-Frank Act, whose Bureau of Consumer Financial Protection could play a leading role in policing fraudulent claims of corporate social responsibility

Chevron, Greenwashing, and the Myth of “Green Oil Companies”

As green business practices grow in popularity, so does the temptation to “greenwash” one’s business to appear more environmentally and socially responsible than it actually is. We examined this phenomenon in an earlier paper, using BP and the Deepwater Horizon catastrophe as a case study and developing a framework for policing dubious claims of corporate social responsibility. This Article revisits these issues focusing on Chevron, an oil company that claims in its advertisements to care deeply about the environment and the communities in which it operates, even as it faces an $18 billion judgment for polluting the Ecuadorean Amazon and injuring its people. After describing Chevron’s “we agree” advertising campaign, the Article sets out our framework for approaching “faux” corporate social responsibility, gauges whether misled consumers and investors might have a legal remedy as a result of Chevron’s advertising claims, and proposes refinements to better regulate corporate greenwashing