OBJECTIVES The global occurrence of antibiotic resistance genes in bacteria in water environments is an increasing concern. Treated wastewater was sampled daily over a 45 day period from the outflow of a municipal wastewater treatment plant in Brno, Czech Republic, and examined for extended-spectrum β-lactamase (ESBL)-producing bacteria. METHODS Water samples were cultivated on MacConkey agar...

Isopropyl alcohol (IPA) is the major organic ingredient in wastewater of semiconductor manufacturing industry. The efficiency of traditional wastewater treatment processes using physicalchemical or microorganism decomposition approaches is limited. Wastewater containing organic solvents that are not decomposed deteriorates the quality of water in the environment, while its volatile nature resul...

In a typical wastewater treatment fl ow sheet used by several industrial units in Indi a. various stages of treatment include primary treatment. foll owed by secondary treatment . and tertiary treatment. The concentration of total dissolved solids increases during neutrali zation of the wastewater with acid/ alkali during primary treatment. which adversely affects the activity of microorgani sm...

The objective of this research is to study the effect of tapioca starch wastewater industries as substrate on an anaerobic fixed bed digester to the biogas production and to study the performance of 2.25 m fixed bed digester. The research was conducted from February-November 2000 in Situraja, Sumedang, West-Java the benefit of this research is to obtain environmentally sound technologiest in th...

The textile processing plants utilize a wide variety of dyes and other chemicals such as acids, bases, salts, detergents, sizes, oxidants, mercerizing and finishing chemicals. Many of these are not retained in the final product and are discharged in the effluent. Therefore, the objective of this study was to assess the performance of EGSB (Expanded Granular Sludge Bed) reactor to treat non-acid...

Coagulation and flocculation are commonly used in water wastewater treatment. Despite its high effectiveness, utilization of inorganic metal salts as coagulant flocculant might cause negative impact to the environment human health. As an alternative tackle this problem, use natural coagulants aids is suggested. In study we reported gelatinized durian starch aid treat synthetic Congo red wastewa...

Bio-plastics and bio-materials are composed of natural or biomass derived polymers, offering solutions to solve immediate environmental issues. Polysaccharide-based bio-plastics represent important alternatives to conventional plastic because of their intrinsic biodegradable nature. Amylose-only (AO), an engineered barley starch with 99% amylose, was tested to produce cross-linked all-natural b...

background: chromium (cr) is the most important element used to plate other metals and electroplating factories are still consid­ered to be the most important industries which pollute the environment to this metal. this paper describes a study con­ducted to determine the efficiency of reverse-osmosis (ro) as a membrane technique for removal of cr from wastewater sam­ples synthetically prepared ...

Sweetpotato (Ipomoea batatas (L.) Lam.), which is an outcrossing hexaploid, is one of the most important starch-producing crops in the world. During the last decade, new sweetpotato cultivars, e.g. 'Quick Sweet', which have approximately 20°C lower pasting temperature, slower retrogradation and higher digestibility of raw starch than ordinary cultivars, have been developed in Japan. Genetic ana...

Municipal waste is one of the most hazardous components of developing countries. However, enzymes do provide an eco-friendly solution in this case. Amylase is an important enzyme in food, textile and pharmaceutical industry and can be used for bioconversion of waste. From the municipal solid waste we have isolated an amylase producing bacteria that can grow in the irritant municipal waste and h...