Concurrent removal of Cr(III), Cu(II), and Pb(II) ions from water by multifunctional TiO2/Alg/FeNPs beads

The use of multifunctional materials for water remediation is a modern approach where adsorption phenomena and heterogeneous photocatalysis can be applied for the removal of pollutants. Since the ideal remediation system should be able to remove both organic and inorganic pollutants, a crucial aspect to consider is the knowledge of operational parameters affecting the removal process, especially when heavy metal ions are present in concoction as in real systems. Given the proven efficiency of multifunctional TiO₂/Alg/FeNPs magnetic beads for the removal of model organic pollutants, this study investigated the possibility to exploit such system also for the removal of mixed heavy metals (MHM), specifically Cr(III), Cu(II), and Pb(II) ions, under ultraviolet irradiation at a wavelength of 254 nm. After a preliminary screening on the optimal catalyst loading, operating parameters such as the initial concentration of metal ions, contact and irradiation time, and pH were investigated to optimize the removal of metal ions using response surface methodology (RSM) via Box–Behnken design. Starting from a MHM solution containing 44 ppm of each metal ion, the removal of Pb(II), Cr(III), and Cu(II) ions in the aqueous solution was nearly completed (>98.4%) for all three ions within 72 min of irradiation at almost neutral pH (pH = 6.8). The stability of TiO₂/Alg/FeNPs was confirmed by retrieving and reusing the beads in three consecutive cycles of heavy metals removal without observing significant changes in catalyst efficiency.     

Extracorporeal hydrophobic amino acid adsorbent therapy in rheumatoid arthritis

Summary We developed a new adsorbent utilizing hydrophobic amino acids in order to treat severe rheumatoid arthritis patients with extracorporeal adsorption therapy. In in vitro experiment, the new adsorbent selectively removed immune complexes and rheumatoid factors from RA plasma presumably due to hydrophobic adsorption. Six out of elevent patients markedly improved in clinical as well as laboratory parameters of disease activities, particularly in their extra-articular manifestations. We recommend preferential use of this treatment since it can spare the replacement protein solution and is expected to give similar efficacy to simple plasma exchange therapy.     

Long-Term Clinical Evaluation of an Adsorbent Column (BM–01) of Direct Hemoperfusion Type for (β2–Microglobulin on the Treatment of Dialysis-Related Amyloidosis

Abstract: The clinical efficacy and safety of a β₂–microglobulin (β₂M) adsorbent column, BM–01, on the treatment of dialysis-related amyloidosis were investigated in 7 hemodialysis patients for more than 6 months. The percent reduction of serum β₂M was more than 60–70%, and the level at the end of each session was less than 10 mg/L in almost all patients. The amount of β₂M removed was calculated as more than 200–300 mg/session. The results demonstrated that BM–01 performed very well for removing β₂M, was capable of maintaining less than 25 mg/L of time average concentration (TAC) for β₂M, and improved the clinical symptoms. Clinically severe side effects were not observed. We recommend that BM–01 should undergo further evaluation for its usefulness in the long-term treatment of dialysis-related amyloidosis, though treatment with the column may not be successful in preventing the onset of the disease.     

血液净化用吸附剂脱附过程的数学模型研究

对已吸附了低密度脂蛋白（ＬＤＬ）及极低密度脂蛋白（ＶＬＤＬ）达到饱和程度的吸附柱，用１ｍｏｌ／Ｌ的生理盐水进行脱附，采用修正Ｌａｎｇｍｕｉｒ吸附式建立了连续脱附过程的数学模型，计算结果与实验测定值吻合，表明该数学模型适用于描述类似于ＬＤＬ及ＶＬＤＬ这类蛋白质大分子的脱附过程。     

甜菊甙提取的一种新工艺

本文介绍了提取甜菊甙的一种新工艺。采用硫酸亚铁和生石灰混合吸附除杂法,一次吸附除杂率可达90%左右,而对糖甙几乎无损失。糖甙精粉收得率为6%左右。产品经测定含量为90%甜度为蔗糖的200～230倍,其他理化性质符合国内外同类产品标准。     

粘合剂对药用炭吸着力的影响

研究不同粘合剂对药用炭颗粒吸着力的影响。方法 以淀粉、糊精、明胶和羧甲基纤维素钠(CMC-Na)为粘合剂,制成药用炭颗粒,根据中国药典2000版所载方法测定其吸着力。结果 不同含量的淀粉、糊精、明胶均会降低药用炭颗粒的吸着力,而8％～10％CMC-Na能增强药用炭颗粒的吸着力。结论 粘合剂可显著影响药用炭颗粒的吸着力,其中以CMC-Na比较理想。     

用大网格吸附剂提取麦迪霉素的研究

本文主要介绍用大网格吸附剂从发酵液中提取麦迪霉素的吸附与解吸过程的研究,包括吸附剂和解吸剂的选择、吸附与解吸条件的筛选等。结果表明:选用MD-A型吸附剂,在发酵液浓度为1500u/ml左右时,对麦迪霉素的静态吸附容量高达6.7×10~4u/g抽干树脂,比以前报道过的CAD-40吸附剂高出40％左右,动态吸附容量可达1.32×10~5u/g干树脂;所筛选到的酮类洗脱剂其解吸率可达93％以上。