Currently, 80% of conventional energy is used to fulfill general public's needs andindustries. The depletion oil and gas reserves rapid growth in energyconsumption have continuously forced us discover renewable sources, like solar, wind,biomass, hydropower, support economic development the future. Solar travels at aspeed 186,000 miles per second. Only a small part radiant that sun emits intospace ever reaches Earth, but more than enough supply all our demand.Indonesia tropical country...

Cheese whey, is a byproduct of cheese or dairy industry, as raw material for ethanol production, because it contains 4.8% lactose. This study used Fed-batch process during fermentation. The advantage this to prevent the reduction in substrate aim examine optimum temperature operating conditions on production through fed-batch fermentation using Kluyveromycess marxianus with variations 300C, 350C, 400C respectively. Results showed that highest biomass and concentration was achieved at μ...

The invention of microorganism's involvement in carbonate precipitation, has lead the exploration this process field construction engineering.Biocement is a product innovation from developing bioprocess technology called biocementation.Biocement refers to CaCO 3 deposit that formed due microorganism activity system rich calcium ion.The primary role precipitation mainly their ability create an alkaline environment (high pH and DIC increase) through various physiological activities.Three main...

Geopolymer has been widely used as adsorbent for heavy metals and dyes.Modification on geopolymer surface with cationic surfactant can improve the anion exchange capacity of geopolymer.In this paper, fly ash-based had modified cetyltrimethylammonium bromide (CTAB) which is applied methyl orange (MO) anionic dye.Modified shown better performance MO dye compared to unmodified geopolymer.The adsorption showed best result at low pH reached equilibrium after 90 minutes.On basis kinetics isotherm...

Environmental issues had always been a problem for all countries in the world. Within certain threshold, heavy metal waste water and air must be considered. Various methods instruments could used analysis of levels. However, quick accurate method needs to upgraded order improve efficiency analysis. Ag nanoparticle is an alternative that detect presence waste. nanoparticles can synthesized through reduction reaction with reductant agents from chemicals, biological compounds, gamma...

The invention of microorganism’s involvement in carbonate precipitation, has lead the exploration this process field construction engineering. Biocement is a product innovation from developing bioprocess technology called biocementation. refers to CaCO 3 deposit that formed due microorganism activity system rich calcium ion. primary role precipitation mainly their ability create an alkaline environment (high pH and DIC increase) through various physiological activities. Three main groups can...

Microbial fuel Cell (MFC) has gained a lot of attention in recent years due to its capability simultaneously reducing organic component and generating electricity. Here multicultural rumen microbes (RM) were used reduce slaughterhouse wastewater self-fabricated MFC. The objectives this study determine the MFC configuration find out maximum degradation electricity generation. experiments conducted by employing, different types electrode materials, size, substrate-RM ratio. Configuration with...

Regular ZnO nanorods were obtained by anodization using NaOH aqueous electrolytes which is affected voltage, time and electrolyte concentration.

Whey is the liquid remaining after milk has been curdled and strained. It a by-product of manufacture cheese or casein several commercial uses. In environmental point view, whey kind waste which high pollution level due to it’s contain organic compound with BOD COD value 50 80 g/L respectively. On other side, also an amount lactose (4.5%-5%); can be used as carbon source raw material for producing ethanol via fermentation using yeast strain Kluyveromyces marxianus. The objective this...

Fly ash which is solid waste can be used as an adsorbent for wastewater treatment. Alkali modification and alkali activation on fly increase the adsorption capacity of ash. In this study, modified activated were Zn(II) ions adsorbents. The effect time initial concentration was studied, well kinetics isotherm adsorption. results showed that removal efficiency by higher than adsorptions have reached equilibrium after two hours. would decrease with both Adsorptions tend to follow pseudo second...

Nowadays reserve of fossil fuel has gradually depleted. This condition forces many researchers to find energy alternatives which is renewable and sustainable in the future. Ethanol derived from cheese industrial waste (whey) using fermentation process can be a new perspective order secure both environment. The aim this study was compare operation modes (batch fed-batch) system on ethanol production whey Kluyveromyces marxianus. result showed that for by fed-batch higher at some point...

Transition metal oxide photocatalysis is a relatively new method representing advanced oxidation process to be applied in industrial wastewater treatment especially for degradation of organic pollutants. We investigate TiO 2 as photocatalyst the photocatalytic Rhodamine B (RhB) under simulated sunlight. Various parameters and their effectiveness have been studied. The effects processing including catalyst loading feed concentration were investigated; pathway was proposed based on UHPLC-MS...

Electroplating wastewater contains high amount of heavy metals that can cause serious problems to humans and the environment. Therefore, it is necessary remove from electroplating wastewater. The aim this research was examine electrocoagulation (EC) process for removing copper (Cu) lead (Pb) ions using aluminum electrodes. It also analyzes removal efficiency energy requirement rate EC method Regarding matter, operational parameters were varied, including time (20−40 min), current density...

Whey is the liquid remaining after milk has been curdled and strained. It a by-product of manufacture cheese or casein several commercial uses. In environmental point view, whey kind waste which high pollution level due to it’s contain organic compound with BOD COD value 50 80 g/L respectively. On other side, also an amount lactose (4.5%-5%); can be used as carbon source raw material for producing ethanol via fermentation using yeast strain Kluyveromyces marxianus . The objective this...

Surface modification has been used as a method to create defects on [Formula: see text] materials, which can improve their desirable properties. In this paper, defected nano-powder was successfully synthesized by chemical reduction using the reducing agent at 300–400[Formula: under argon atmosphere. High defect concentration be produced increasing process temperature. The modified shows good visible light absorption and photocatalytic activity degradation of Rhodamine B (4–9 times higher...

This paper describes the adsorption of Cu2+ and Fe2+ ions, common heavy metals found in industrial wastewater, by a fly ash-based geopolymer batch experiments. Kinetics studies showed that each ion followed pseudo-second order reaction. Moreover, isotherm ions Langmuir model. Monolayer capacities were approximately 53.76 mg/g for 52.63 ion, respectively.

Currently, public awareness of healthcare importance increase. Polyunsaturated fatty acid is an essential nutrition for us, such arachidonic acid, docosahexaenoic and eicosapentaenoic acid. The need generally derived from fish oil, but oil has a high risk chemical contamination. Microalgae are single cell microorganism, one Phaeodactylum tricornutum which have relatively content (29,8%). Biotechnology market very promising both foods feeds, because the availability abundant raw materials...