Current Organic Chemistry - Volume 20, Issue 26, 2016

This mini review focuses on the current developments in the field of dark fermentation technologies using wastewater as carbon and nutrient source in batch reactors. Besides, the major microbiota (pure, enriched mixed, co and mixed cultures) involved in the process have been emphasized. Additionally, problems associated with the lower production performances and the overcoming strategies applied to enhan Read More

Fermentation has become a reliable, cost-competitive, feasible alternative for large-scale industrial production of many bulk and special organic acids. Electrodialysis with bipolar membranes (EDBM) technology was considered as a ‘‘green’’ process for organic acid separation from fermentation broth, which has distinct advantages over other electrolysis- based technologies. However, review on the new state on this Read More

Large amount of sludge has been a serious problem due to its great environmental risk. Anaerobic digestion (AD) is a commonly used method to treat sludge. Timely review of research developments of sludge AD is needed to gain insight for its future research and industrial applications. This paper summarized the main research developments of sludge AD from 2012 to 2015. The research hotspots of sludge AD from 2012 to Read More

Sulfur compounds play a significant role in low treatment efficiency, production of corrosive gases and unpleasant odors during sludge anaerobic digestion, which limits its environment and economic benefits. Better understanding of sulfur transformations, inhibitions and inhibition control methods is deemed necessary for enhancing the wider application of sludge anaerobic digestion. This review presented a detailed sum Read More

Electrodeionization (EDI) process is a relatively new process applied in environmental engineering, which combines electrodialysis and conventional ion exchange. The EDI process has obvious advantages compared with the traditional deionization equipments based on the chemical regeneration. This review first time evaluated the importance of EDI process for bioproduct recovery (organic acid recovery, bio-metha Read More

Lignocellulosic biomass, as a sustainable bioenergy source, can be used to supplement fossil fuel. However, the utilization of lignocellulosic biomass for energy production has not been widely applied because of the complicated and stable structure of plant cell wall. Hydrothermal pretreatment of lignocellulosic biomass is an efficient method to disrupt lignin and hemicellulose and expose cellulose. Nowadays, many literatures demo Read More

This review indicates that although anaerobic treatment has the advantage of methane energy production, release of effluent dissolved methane into the atmosphere results in unwanted greenhouse gas (GHG) emissions. Reported concentrations of dissolved methane are 8 – 40 mg/L, accounting for about half of the total methane production from the treatment of low strength wastewaters. The dissolved fraction of the Read More

Artificial enzymes have emerged as cheaper, more robust and chemically malleable alternatives for natural enzymes in the chemical reactions. The importance of cyclodextrin nanoreactors with the hydrophilic exterior surface and the hydrophobic interior core as host structures in artificial enzymes designing has attracted special attention over the last years. The aim of the present paper is to review three different categori Read More